pako - npm Package Compare versions

Comparing version 1.0.11 to 2.0.0

CHANGELOG.md

@@ -9,3 +9,18 @@ # Changelog
 
-## [1.0.11] -  2020-01-29
+## [2.0.0] - 2020-11-17
+### Changed
+- Removed binary strings and `Array` support.
+- Removed fallbacks for TypedArray methods (`.set()`, `.subarray()`).
+- Rewritten top-level wrappers.
+- Removed support of `Inflate` & `Deflate` instance create without `new`.
+- `Inflate.push()` no longer needs second param (end is auto-detected).
+- Increased default inflate chunk size to 64K.
+- Moved exported constants to `.constants`.
+- Switched to es6. Legacy es5 builds available in `/dist`.
+- Added esm build.
+- Structure of `/dist` folder changed.
+- Upgraded build tools to modern ones.
+
+
+## [1.0.11] - 2020-01-29
 ### Fixed
@@ -15,3 +30,3 @@ - Fix tests in node.js v12+, #179.
 
-## [1.0.10] -  2019-02-28
+## [1.0.10] - 2019-02-28
 ### Fixed
@@ -144,2 +159,3 @@ - Fix minified version, #161.
 
+[2.0.0]: https://github.com/nodeca/pako/compare/1.0.11...2.0.0
 [1.0.10]: https://github.com/nodeca/pako/compare/1.0.10...1.0.11
@@ -146,0 +162,0 @@ [1.0.10]: https://github.com/nodeca/pako/compare/1.0.9...1.0.10

dist/pako_deflate.min.js

@@ -1,1 +0,2 @@
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n.status=73;if(73===n.status)if(n.gzhead.name){r=n.pending;do{if(n.pending===n.pending_buf_size&&(n.gzhead.hcrc&&n.pending>r&&(t.adler=c(t.adler,n.pending_buf,n.pending-r,r)),q(t),r=n.pending,n.pending===n.pending_buf_size)){i=1;break}L(n,i=n.gzindex<n.gzhead.name.length?255&n.gzhead.name.charCodeAt(n.gzindex++):0)}while(0!==i);n.gzhead.hcrc&&n.pending>r&&(t.adler=c(t.adler,n.pending_buf,n.pending-r,r)),0===i&&(n.gzindex=0,n.status=91)}else n.status=91;if(91===n.status)if(n.gzhead.comment){r=n.pending;do{if(n.pending===n.pending_buf_size&&(n.gzhead.hcrc&&n.pending>r&&(t.adler=c(t.adler,n.pending_buf,n.pending-r,r)),q(t),r=n.pending,n.pending===n.pending_buf_size)){i=1;break}L(n,i=n.gzindex<n.gzhead.comment.length?255&n.gzhead.comment.charCodeAt(n.gzindex++):0)}while(0!==i);n.gzhead.hcrc&&n.pending>r&&(t.adler=c(t.adler,n.pending_buf,n.pending-r,r)),0===i&&(n.status=103)}else n.status=103;if(103===n.status&&(n.gzhead.hcrc?(n.pending+2>n.pending_buf_size&&q(t),n.pending+2<=n.pending_buf_size&&(L(n,255&t.adler),L(n,t.adler>>8&255),t.adler=0,n.status=C)):n.status=C),0!==n.pending){if(q(t),0===t.avail_out)return n.last_flush=-1,p}else if(0===t.avail_in&&I(e)<=I(a)&&e!==d)return D(t,-5);if(666===n.status&&0!==t.avail_in)return D(t,-5);if(0!==t.avail_in||0!==n.lookahead||e!==_&&666!==n.status){var h=2===n.strategy?function(t,e){for(var a;;){if(0===t.lookahead&&(H(t),0===t.lookahead)){if(e===_)return S;break}if(t.match_length=0,a=o._tr_tally(t,0,t.window[t.strstart]),t.lookahead--,t.strstart++,a&&(T(t,!1),0===t.strm.avail_out))return S}return t.insert=0,e===d?(T(t,!0),0===t.strm.avail_out?E:U):t.last_lit&&(T(t,!1),0===t.strm.avail_out)?S:j}(n,e):3===n.strategy?function(t,e){for(var a,n,r,i,s=t.window;;){if(t.lookahead<=x){if(H(t),t.lookahead<=x&&e===_)return S;if(0===t.lookahead)break}if(t.match_length=0,t.lookahead>=z&&0<t.strstart&&(n=s[r=t.strstart-1])===s[++r]&&n===s[++r]&&n===s[++r]){i=t.strstart+x;do{}while(n===s[++r]&&n===s[++r]&&n===s[++r]&&n===s[++r]&&n===s[++r]&&n===s[++r]&&n===s[++r]&&n===s[++r]&&r<i);t.match_length=x-(i-r),t.match_length>t.lookahead&&(t.match_length=t.lookahead)}if(t.match_length>=z?(a=o._tr_tally(t,1,t.match_length-z),t.lookahead-=t.match_length,t.strstart+=t.match_length,t.match_length=0):(a=o._tr_tally(t,0,t.window[t.strstart]),t.lookahead--,t.strstart++),a&&(T(t,!1),0===t.strm.avail_out))return S}return t.insert=0,e===d?(T(t,!0),0===t.strm.avail_out?E:U):t.last_lit&&(T(t,!1),0===t.strm.avail_out)?S:j}(n,e):l[n.level].func(n,e);if(h!==E&&h!==U||(n.status=666),h===S||h===E)return 0===t.avail_out&&(n.last_flush=-1),p;if(h===j&&(1===e?o._tr_align(n):5!==e&&(o._tr_stored_block(n,0,0,!1),3===e&&(O(n.head),0===n.lookahead&&(n.strstart=0,n.block_start=0,n.insert=0))),q(t),0===t.avail_out))return n.last_flush=-1,p}return e!==d?p:n.wrap<=0?1:(2===n.wrap?(L(n,255&t.adler),L(n,t.adler>>8&255),L(n,t.adler>>16&255),L(n,t.adler>>24&255),L(n,255&t.total_in),L(n,t.total_in>>8&255),L(n,t.total_in>>16&255),L(n,t.total_in>>24&255)):(N(n,t.adler>>>16),N(n,65535&t.adler)),q(t),0<n.wrap&&(n.wrap=-n.wrap),0!==n.pending?p:1)},a.deflateEnd=function(t){var e;return t&&t.state?(e=t.state.status)!==A&&69!==e&&73!==e&&91!==e&&103!==e&&e!==C&&666!==e?D(t,g):(t.state=null,e===C?D(t,-3):p):g},a.deflateSetDictionary=function(t,e){var a,n,r,i,s,h,l,o,_=e.length;if(!t||!t.state)return g;if(2===(i=(a=t.state).wrap)||1===i&&a.status!==A||a.lookahead)return g;for(1===i&&(t.adler=f(t.adler,e,_,0)),a.wrap=0,_>=a.w_size&&(0===i&&(O(a.head),a.strstart=0,a.block_start=0,a.insert=0),o=new u.Buf8(a.w_size),u.arraySet(o,e,_-a.w_size,a.w_size,0),e=o,_=a.w_size),s=t.avail_in,h=t.next_in,l=t.input,t.avail_in=_,t.next_in=0,t.input=e,H(a);a.lookahead>=z;){for(n=a.strstart,r=a.lookahead-(z-1);a.ins_h=(a.ins_h<<a.hash_shift^a.window[n+z-1])&a.hash_mask,a.prev[n&a.w_mask]=a.head[a.ins_h],a.head[a.ins_h]=n,n++,--r;);a.strstart=n,a.lookahead=z-1,H(a)}return a.strstart+=a.lookahead,a.block_start=a.strstart,a.insert=a.lookahead,a.lookahead=0,a.match_length=a.prev_length=z-1,a.match_available=0,t.next_in=h,t.input=l,t.avail_in=s,a.wrap=i,p},a.deflateInfo="pako deflate (from Nodeca project)"},{"../utils/common":1,"./adler32":3,"./crc32":4,"./messages":6,"./trees":7}],6:[function(t,e,a){"use strict";e.exports={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"}},{}],7:[function(t,e,a){"use strict";var l=t("../utils/common"),h=0,o=1;function n(t){for(var e=t.length;0<=--e;)t[e]=0}var _=0,s=29,d=256,u=d+1+s,f=30,c=19,g=2*u+1,m=15,r=16,p=7,b=256,v=16,w=17,y=18,k=[0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0],z=[0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13],x=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7],B=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],A=new Array(2*(u+2));n(A);var C=new Array(2*f);n(C);var S=new Array(512);n(S);var j=new Array(256);n(j);var E=new Array(s);n(E);var U,D,I,O=new Array(f);function q(t,e,a,n,r){this.static_tree=t,this.extra_bits=e,this.extra_base=a,this.elems=n,this.max_length=r,this.has_stree=t&&t.length}function i(t,e){this.dyn_tree=t,this.max_code=0,this.stat_desc=e}function T(t){return t<256?S[t]:S[256+(t>>>7)]}function L(t,e){t.pending_buf[t.pending++]=255&e,t.pending_buf[t.pending++]=e>>>8&255}function N(t,e,a){t.bi_valid>r-a?(t.bi_buf|=e<<t.bi_valid&65535,L(t,t.bi_buf),t.bi_buf=e>>r-t.bi_valid,t.bi_valid+=a-r):(t.bi_buf|=e<<t.bi_valid&65535,t.bi_valid+=a)}function R(t,e,a){N(t,a[2*e],a[2*e+1])}function H(t,e){for(var a=0;a|=1&t,t>>>=1,a<<=1,0<--e;);return a>>>1}function F(t,e,a){var n,r,i=new Array(m+1),s=0;for(n=1;n<=m;n++)i[n]=s=s+a[n-1]<<1;for(r=0;r<=e;r++){var h=t[2*r+1];0!==h&&(t[2*r]=H(i[h]++,h))}}function K(t){var e;for(e=0;e<u;e++)t.dyn_ltree[2*e]=0;for(e=0;e<f;e++)t.dyn_dtree[2*e]=0;for(e=0;e<c;e++)t.bl_tree[2*e]=0;t.dyn_ltree[2*b]=1,t.opt_len=t.static_len=0,t.last_lit=t.matches=0}function M(t){8<t.bi_valid?L(t,t.bi_buf):0<t.bi_valid&&(t.pending_buf[t.pending++]=t.bi_buf),t.bi_buf=0,t.bi_valid=0}function P(t,e,a,n){var r=2*e,i=2*a;return t[r]<t[i]||t[r]===t[i]&&n[e]<=n[a]}function G(t,e,a){for(var n=t.heap[a],r=a<<1;r<=t.heap_len&&(r<t.heap_len&&P(e,t.heap[r+1],t.heap[r],t.depth)&&r++,!P(e,n,t.heap[r],t.depth));)t.heap[a]=t.heap[r],a=r,r<<=1;t.heap[a]=n}function J(t,e,a){var n,r,i,s,h=0;if(0!==t.last_lit)for(;n=t.pending_buf[t.d_buf+2*h]<<8|t.pending_buf[t.d_buf+2*h+1],r=t.pending_buf[t.l_buf+h],h++,0===n?R(t,r,e):(R(t,(i=j[r])+d+1,e),0!==(s=k[i])&&N(t,r-=E[i],s),R(t,i=T(--n),a),0!==(s=z[i])&&N(t,n-=O[i],s)),h<t.last_lit;);R(t,b,e)}function Q(t,e){var a,n,r,i=e.dyn_tree,s=e.stat_desc.static_tree,h=e.stat_desc.has_stree,l=e.stat_desc.elems,o=-1;for(t.heap_len=0,t.heap_max=g,a=0;a<l;a++)0!==i[2*a]?(t.heap[++t.heap_len]=o=a,t.depth[a]=0):i[2*a+1]=0;for(;t.heap_len<2;)i[2*(r=t.heap[++t.heap_len]=o<2?++o:0)]=1,t.depth[r]=0,t.opt_len--,h&&(t.static_len-=s[2*r+1]);for(e.max_code=o,a=t.heap_len>>1;1<=a;a--)G(t,i,a);for(r=l;a=t.heap[1],t.heap[1]=t.heap[t.heap_len--],G(t,i,1),n=t.heap[1],t.heap[--t.heap_max]=a,t.heap[--t.heap_max]=n,i[2*r]=i[2*a]+i[2*n],t.depth[r]=(t.depth[a]>=t.depth[n]?t.depth[a]:t.depth[n])+1,i[2*a+1]=i[2*n+1]=r,t.heap[1]=r++,G(t,i,1),2<=t.heap_len;);t.heap[--t.heap_max]=t.heap[1],function(t,e){var a,n,r,i,s,h,l=e.dyn_tree,o=e.max_code,_=e.stat_desc.static_tree,d=e.stat_desc.has_stree,u=e.stat_desc.extra_bits,f=e.stat_desc.extra_base,c=e.stat_desc.max_length,p=0;for(i=0;i<=m;i++)t.bl_count[i]=0;for(l[2*t.heap[t.heap_max]+1]=0,a=t.heap_max+1;a<g;a++)c<(i=l[2*l[2*(n=t.heap[a])+1]+1]+1)&&(i=c,p++),l[2*n+1]=i,o<n||(t.bl_count[i]++,s=0,f<=n&&(s=u[n-f]),h=l[2*n],t.opt_len+=h*(i+s),d&&(t.static_len+=h*(_[2*n+1]+s)));if(0!==p){do{for(i=c-1;0===t.bl_count[i];)i--;t.bl_count[i]--,t.bl_count[i+1]+=2,t.bl_count[c]--,p-=2}while(0<p);for(i=c;0!==i;i--)for(n=t.bl_count[i];0!==n;)o<(r=t.heap[--a])||(l[2*r+1]!==i&&(t.opt_len+=(i-l[2*r+1])*l[2*r],l[2*r+1]=i),n--)}}(t,e),F(i,o,t.bl_count)}function V(t,e,a){var n,r,i=-1,s=e[1],h=0,l=7,o=4;for(0===s&&(l=138,o=3),e[2*(a+1)+1]=65535,n=0;n<=a;n++)r=s,s=e[2*(n+1)+1],++h<l&&r===s||(h<o?t.bl_tree[2*r]+=h:0!==r?(r!==i&&t.bl_tree[2*r]++,t.bl_tree[2*v]++):h<=10?t.bl_tree[2*w]++:t.bl_tree[2*y]++,i=r,(h=0)===s?(l=138,o=3):r===s?(l=6,o=3):(l=7,o=4))}function W(t,e,a){var n,r,i=-1,s=e[1],h=0,l=7,o=4;for(0===s&&(l=138,o=3),n=0;n<=a;n++)if(r=s,s=e[2*(n+1)+1],!(++h<l&&r===s)){if(h<o)for(;R(t,r,t.bl_tree),0!=--h;);else 0!==r?(r!==i&&(R(t,r,t.bl_tree),h--),R(t,v,t.bl_tree),N(t,h-3,2)):h<=10?(R(t,w,t.bl_tree),N(t,h-3,3)):(R(t,y,t.bl_tree),N(t,h-11,7));i=r,(h=0)===s?(l=138,o=3):r===s?(l=6,o=3):(l=7,o=4)}}n(O);var X=!1;function Y(t,e,a,n){var r,i,s,h;N(t,(_<<1)+(n?1:0),3),i=e,s=a,h=!0,M(r=t),h&&(L(r,s),L(r,~s)),l.arraySet(r.pending_buf,r.window,i,s,r.pending),r.pending+=s}a._tr_init=function(t){X||(function(){var t,e,a,n,r,i=new Array(m+1);for(n=a=0;n<s-1;n++)for(E[n]=a,t=0;t<1<<k[n];t++)j[a++]=n;for(j[a-1]=n,n=r=0;n<16;n++)for(O[n]=r,t=0;t<1<<z[n];t++)S[r++]=n;for(r>>=7;n<f;n++)for(O[n]=r<<7,t=0;t<1<<z[n]-7;t++)S[256+r++]=n;for(e=0;e<=m;e++)i[e]=0;for(t=0;t<=143;)A[2*t+1]=8,t++,i[8]++;for(;t<=255;)A[2*t+1]=9,t++,i[9]++;for(;t<=279;)A[2*t+1]=7,t++,i[7]++;for(;t<=287;)A[2*t+1]=8,t++,i[8]++;for(F(A,u+1,i),t=0;t<f;t++)C[2*t+1]=5,C[2*t]=H(t,5);U=new q(A,k,d+1,u,m),D=new q(C,z,0,f,m),I=new q(new Array(0),x,0,c,p)}(),X=!0),t.l_desc=new i(t.dyn_ltree,U),t.d_desc=new i(t.dyn_dtree,D),t.bl_desc=new i(t.bl_tree,I),t.bi_buf=0,t.bi_valid=0,K(t)},a._tr_stored_block=Y,a._tr_flush_block=function(t,e,a,n){var r,i,s=0;0<t.level?(2===t.strm.data_type&&(t.strm.data_type=function(t){var e,a=4093624447;for(e=0;e<=31;e++,a>>>=1)if(1&a&&0!==t.dyn_ltree[2*e])return h;if(0!==t.dyn_ltree[18]||0!==t.dyn_ltree[20]||0!==t.dyn_ltree[26])return o;for(e=32;e<d;e++)if(0!==t.dyn_ltree[2*e])return o;return h}(t)),Q(t,t.l_desc),Q(t,t.d_desc),s=function(t){var e;for(V(t,t.dyn_ltree,t.l_desc.max_code),V(t,t.dyn_dtree,t.d_desc.max_code),Q(t,t.bl_desc),e=c-1;3<=e&&0===t.bl_tree[2*B[e]+1];e--);return t.opt_len+=3*(e+1)+5+5+4,e}(t),r=t.opt_len+3+7>>>3,(i=t.static_len+3+7>>>3)<=r&&(r=i)):r=i=a+5,a+4<=r&&-1!==e?Y(t,e,a,n):4===t.strategy||i===r?(N(t,2+(n?1:0),3),J(t,A,C)):(N(t,4+(n?1:0),3),function(t,e,a,n){var 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a,n,r;for(;;){if(t.lookahead<ut){if(Et(t),t.lookahead<ut&&e===X)return 1;if(0===t.lookahead)break}if(a=0,t.lookahead>=3&&(t.ins_h=mt(t,t.ins_h,t.window[t.strstart+3-1]),a=t.prev[t.strstart&t.w_mask]=t.head[t.ins_h],t.head[t.ins_h]=t.strstart),t.prev_length=t.match_length,t.prev_match=t.match_start,t.match_length=2,0!==a&&t.prev_length<t.max_lazy_match&&t.strstart-a<=t.w_size-ut&&(t.match_length=At(t,a),t.match_length<=5&&(t.strategy===rt||3===t.match_length&&t.strstart-t.match_start>4096)&&(t.match_length=2)),t.prev_length>=3&&t.match_length<=t.prev_length){r=t.strstart+t.lookahead-3,n=Y(t,t.strstart-1-t.prev_match,t.prev_length-3),t.lookahead-=t.prev_length-1,t.prev_length-=2;do{++t.strstart<=r&&(t.ins_h=mt(t,t.ins_h,t.window[t.strstart+3-1]),a=t.prev[t.strstart&t.w_mask]=t.head[t.ins_h],t.head[t.ins_h]=t.strstart)}while(0!=--t.prev_length);if(t.match_available=0,t.match_length=2,t.strstart++,n&&(yt(t,!1),0===t.strm.avail_out))return 1}else if(t.match_available){if(n=Y(t,0,t.window[t.strstart-1]),n&&yt(t,!1),t.strstart++,t.lookahead--,0===t.strm.avail_out)return 1}else t.match_available=1,t.strstart++,t.lookahead--}return t.match_available&&(n=Y(t,0,t.window[t.strstart-1]),t.match_available=0),t.insert=t.strstart<2?t.strstart:2,e===J?(yt(t,!0),0===t.strm.avail_out?3:4):t.last_lit&&(yt(t,!1),0===t.strm.avail_out)?1:2};function Rt(t,e,a,n,r){this.good_length=t,this.max_lazy=e,this.nice_length=a,this.max_chain=n,this.func=r}const St=[new Rt(0,0,0,0,((t,e)=>{let a=65535;for(a>t.pending_buf_size-5&&(a=t.pending_buf_size-5);;){if(t.lookahead<=1){if(Et(t),0===t.lookahead&&e===X)return 1;if(0===t.lookahead)break}t.strstart+=t.lookahead,t.lookahead=0;const n=t.block_start+a;if((0===t.strstart||t.strstart>=n)&&(t.lookahead=t.strstart-n,t.strstart=n,yt(t,!1),0===t.strm.avail_out))return 1;if(t.strstart-t.block_start>=t.w_size-ut&&(yt(t,!1),0===t.strm.avail_out))return 1}return t.insert=0,e===J?(yt(t,!0),0===t.strm.avail_out?3:4):(t.strstart>t.block_start&&(yt(t,!1),t.strm.avail_out),1)})),new Rt(4,4,8,4,Zt),new Rt(4,5,16,8,Zt),new Rt(4,6,32,32,Zt),new Rt(4,4,16,16,Ut),new Rt(8,16,32,32,Ut),new Rt(8,16,128,128,Ut),new Rt(8,32,128,256,Ut),new Rt(32,128,258,1024,Ut),new Rt(32,258,258,4096,Ut)];function Lt(){this.strm=null,this.status=0,this.pending_buf=null,this.pending_buf_size=0,this.pending_out=0,this.pending=0,this.wrap=0,this.gzhead=null,this.gzindex=0,this.method=ot,this.last_flush=-1,this.w_size=0,this.w_bits=0,this.w_mask=0,this.window=null,this.window_size=0,this.prev=null,this.head=null,this.ins_h=0,this.hash_size=0,this.hash_bits=0,this.hash_mask=0,this.hash_shift=0,this.block_start=0,this.match_length=0,this.prev_match=0,this.match_available=0,this.strstart=0,this.match_start=0,this.lookahead=0,this.prev_length=0,this.max_chain_length=0,this.max_lazy_match=0,this.level=0,this.strategy=0,this.good_match=0,this.nice_match=0,this.dyn_ltree=new 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e===V&&((a=t.state).window_size=2*a.w_size,bt(a.head),a.max_lazy_match=St[a.level].max_lazy,a.good_match=St[a.level].good_length,a.nice_match=St[a.level].nice_length,a.max_chain_length=St[a.level].max_chain,a.strstart=0,a.block_start=0,a.lookahead=0,a.insert=0,a.match_length=a.prev_length=2,a.match_available=0,a.ins_h=0),e},Ot=(t,e,a,n,r,i)=>{if(!t)return tt;let s=1;if(e===nt&&(e=6),n<0?(s=0,n=-n):n>15&&(s=2,n-=16),r<1||r>9||a!==ot||n<8||n>15||e<0||e>9||i<0||i>_t)return gt(t,tt);8===n&&(n=9);const _=new Lt;return t.state=_,_.strm=t,_.wrap=s,_.gzhead=null,_.w_bits=n,_.w_size=1<<_.w_bits,_.w_mask=_.w_size-1,_.hash_bits=r+7,_.hash_size=1<<_.hash_bits,_.hash_mask=_.hash_size-1,_.hash_shift=~~((_.hash_bits+3-1)/3),_.window=new Uint8Array(2*_.w_size),_.head=new Uint16Array(_.hash_size),_.prev=new Uint16Array(_.w_size),_.lit_bufsize=1<<r+6,_.pending_buf_size=4*_.lit_bufsize,_.pending_buf=new 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e!==J?V:r.wrap<=0?$:(2===r.wrap?(zt(r,255&t.adler),zt(r,t.adler>>8&255),zt(r,t.adler>>16&255),zt(r,t.adler>>24&255),zt(r,255&t.total_in),zt(r,t.total_in>>8&255),zt(r,t.total_in>>16&255),zt(r,t.total_in>>24&255)):(kt(r,t.adler>>>16),kt(r,65535&t.adler)),vt(t),r.wrap>0&&(r.wrap=-r.wrap),0!==r.pending?V:$)},deflateEnd:t=>{if(!t||!t.state)return tt;const e=t.state.status;return 42!==e&&69!==e&&73!==e&&91!==e&&e!==ft&&e!==ct&&e!==pt?gt(t,tt):(t.state=null,e===ct?gt(t,et):V)},deflateSetDictionary:(t,e)=>{let a=e.length;if(!t||!t.state)return tt;const n=t.state,r=n.wrap;if(2===r||1===r&&42!==n.status||n.lookahead)return tt;if(1===r&&(t.adler=I(t.adler,e,a,0)),n.wrap=0,a>=n.w_size){0===r&&(bt(n.head),n.strstart=0,n.block_start=0,n.insert=0);let t=new Uint8Array(n.w_size);t.set(e.subarray(a-n.w_size,a),0),e=t,a=n.w_size}const i=t.avail_in,s=t.next_in,_=t.input;for(t.avail_in=a,t.next_in=0,t.input=e,Et(n);n.lookahead>=3;){let 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e&&e.state?0!==(i=e.state).wrap&&11!==i.mode?U:11===i.mode&&R(1,t,n,0)!==i.check?-3:j(e,t,n,n)?(i.mode=31,-4):(i.havedict=1,T):U},i.inflateInfo="pako inflate (from Nodeca project)"},{"../utils/common":1,"./adler32":3,"./crc32":5,"./inffast":7,"./inftrees":9}],9:[function(e,t,i){"use strict";var I=e("../utils/common"),D=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0],T=[16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78],U=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0],F=[16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64];t.exports=function(e,t,i,n,a,r,o,s){var f,l,d,c,u,h,b,m,w,k=s.bits,_=0,g=0,v=0,p=0,x=0,y=0,S=0,E=0,Z=0,B=0,A=null,z=0,R=new I.Buf16(16),N=new I.Buf16(16),O=null,C=0;for(_=0;_<=15;_++)R[_]=0;for(g=0;g<n;g++)R[t[i+g]]++;for(x=k,p=15;1<=p&&0===R[p];p--);if(p<x&&(x=p),0===p)return a[r++]=20971520,a[r++]=20971520,s.bits=1,0;for(v=1;v<p&&0===R[v];v++);for(x<v&&(x=v),_=E=1;_<=15;_++)if(E<<=1,(E-=R[_])<0)return-1;if(0<E&&(0===e||1!==p))return-1;for(N[1]=0,_=1;_<15;_++)N[_+1]=N[_]+R[_];for(g=0;g<n;g++)0!==t[i+g]&&(o[N[t[i+g]]++]=g);if(0===e?(A=O=o,h=19):1===e?(A=D,z-=257,O=T,C-=257,h=256):(A=U,O=F,h=-1),_=v,u=r,S=g=B=0,d=-1,c=(Z=1<<(y=x))-1,1===e&&852<Z||2===e&&592<Z)return 1;for(;;){for(b=_-S,o[g]<h?(m=0,w=o[g]):o[g]>h?(m=O[C+o[g]],w=A[z+o[g]]):(m=96,w=0),f=1<<_-S,v=l=1<<y;a[u+(B>>S)+(l-=f)]=b<<24|m<<16|w|0,0!==l;);for(f=1<<_-1;B&f;)f>>=1;if(0!==f?(B&=f-1,B+=f):B=0,g++,0==--R[_]){if(_===p)break;_=t[i+o[g]]}if(x<_&&(B&c)!==d){for(0===S&&(S=x),u+=v,E=1<<(y=_-S);y+S<p&&!((E-=R[y+S])<=0);)y++,E<<=1;if(Z+=1<<y,1===e&&852<Z||2===e&&592<Z)return 1;a[d=B&c]=x<<24|y<<16|u-r|0}}return 0!==B&&(a[u+B]=_-S<<24|64<<16|0),s.bits=x,0}},{"../utils/common":1}],10:[function(e,t,i){"use strict";t.exports={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"}},{}],11:[function(e,t,i){"use strict";t.exports=function(){this.input=null,this.next_in=0,this.avail_in=0,this.total_in=0,this.output=null,this.next_out=0,this.avail_out=0,this.total_out=0,this.msg="",this.state=null,this.data_type=2,this.adler=0}},{}],"/lib/inflate.js":[function(e,t,i){"use strict";var c=e("./zlib/inflate"),u=e("./utils/common"),h=e("./utils/strings"),b=e("./zlib/constants"),n=e("./zlib/messages"),a=e("./zlib/zstream"),r=e("./zlib/gzheader"),m=Object.prototype.toString;function o(e){if(!(this instanceof o))return new o(e);this.options=u.assign({chunkSize:16384,windowBits:0,to:""},e||{});var t=this.options;t.raw&&0<=t.windowBits&&t.windowBits<16&&(t.windowBits=-t.windowBits,0===t.windowBits&&(t.windowBits=-15)),!(0<=t.windowBits&&t.windowBits<16)||e&&e.windowBits||(t.windowBits+=32),15<t.windowBits&&t.windowBits<48&&0==(15&t.windowBits)&&(t.windowBits|=15),this.err=0,this.msg="",this.ended=!1,this.chunks=[],this.strm=new a,this.strm.avail_out=0;var i=c.inflateInit2(this.strm,t.windowBits);if(i!==b.Z_OK)throw new Error(n[i]);if(this.header=new r,c.inflateGetHeader(this.strm,this.header),t.dictionary&&("string"==typeof t.dictionary?t.dictionary=h.string2buf(t.dictionary):"[object ArrayBuffer]"===m.call(t.dictionary)&&(t.dictionary=new Uint8Array(t.dictionary)),t.raw&&(i=c.inflateSetDictionary(this.strm,t.dictionary))!==b.Z_OK))throw new Error(n[i])}function s(e,t){var i=new o(t);if(i.push(e,!0),i.err)throw i.msg||n[i.err];return i.result}o.prototype.push=function(e,t){var i,n,a,r,o,s=this.strm,f=this.options.chunkSize,l=this.options.dictionary,d=!1;if(this.ended)return!1;n=t===~~t?t:!0===t?b.Z_FINISH:b.Z_NO_FLUSH,"string"==typeof e?s.input=h.binstring2buf(e):"[object ArrayBuffer]"===m.call(e)?s.input=new Uint8Array(e):s.input=e,s.next_in=0,s.avail_in=s.input.length;do{if(0===s.avail_out&&(s.output=new u.Buf8(f),s.next_out=0,s.avail_out=f),(i=c.inflate(s,b.Z_NO_FLUSH))===b.Z_NEED_DICT&&l&&(i=c.inflateSetDictionary(this.strm,l)),i===b.Z_BUF_ERROR&&!0===d&&(i=b.Z_OK,d=!1),i!==b.Z_STREAM_END&&i!==b.Z_OK)return this.onEnd(i),!(this.ended=!0);s.next_out&&(0!==s.avail_out&&i!==b.Z_STREAM_END&&(0!==s.avail_in||n!==b.Z_FINISH&&n!==b.Z_SYNC_FLUSH)||("string"===this.options.to?(a=h.utf8border(s.output,s.next_out),r=s.next_out-a,o=h.buf2string(s.output,a),s.next_out=r,s.avail_out=f-r,r&&u.arraySet(s.output,s.output,a,r,0),this.onData(o)):this.onData(u.shrinkBuf(s.output,s.next_out)))),0===s.avail_in&&0===s.avail_out&&(d=!0)}while((0<s.avail_in||0===s.avail_out)&&i!==b.Z_STREAM_END);return i===b.Z_STREAM_END&&(n=b.Z_FINISH),n===b.Z_FINISH?(i=c.inflateEnd(this.strm),this.onEnd(i),this.ended=!0,i===b.Z_OK):n!==b.Z_SYNC_FLUSH||(this.onEnd(b.Z_OK),!(s.avail_out=0))},o.prototype.onData=function(e){this.chunks.push(e)},o.prototype.onEnd=function(e){e===b.Z_OK&&("string"===this.options.to?this.result=this.chunks.join(""):this.result=u.flattenChunks(this.chunks)),this.chunks=[],this.err=e,this.msg=this.strm.msg},i.Inflate=o,i.inflate=s,i.inflateRaw=function(e,t){return(t=t||{}).raw=!0,s(e,t)},i.ungzip=s},{"./utils/common":1,"./utils/strings":2,"./zlib/constants":4,"./zlib/gzheader":6,"./zlib/inflate":8,"./zlib/messages":10,"./zlib/zstream":11}]},{},[])("/lib/inflate.js")});
+/*! pako 2.0.0 https://github.com/nodeca/pako @license (MIT AND Zlib) */
+!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):(e="undefined"!=typeof globalThis?globalThis:e||self).pako=t()}(this,(function(){"use strict";var e=(e,t,i,n)=>{let a=65535&e|0,r=e>>>16&65535|0,s=0;for(;0!==i;){s=i>2e3?2e3:i,i-=s;do{a=a+t[n++]|0,r=r+a|0}while(--s);a%=65521,r%=65521}return a|r<<16|0};const t=new Uint32Array((()=>{let e,t=[];for(var i=0;i<256;i++){e=i;for(var n=0;n<8;n++)e=1&e?3988292384^e>>>1:e>>>1;t[i]=e}return t})());var i=(e,i,n,a)=>{const r=t,s=a+n;e^=-1;for(let t=a;t<s;t++)e=e>>>8^r[255&(e^i[t])];return-1^e};var n=function(e,t){let i,n,a,r,s,o,l,d,f,h,c,u,w,b,m,k,_,g,v,p,y,x,E,R;const A=e.state;i=e.next_in,E=e.input,n=i+(e.avail_in-5),a=e.next_out,R=e.output,r=a-(t-e.avail_out),s=a+(e.avail_out-257),o=A.dmax,l=A.wsize,d=A.whave,f=A.wnext,h=A.window,c=A.hold,u=A.bits,w=A.lencode,b=A.distcode,m=(1<<A.lenbits)-1,k=(1<<A.distbits)-1;e:do{u<15&&(c+=E[i++]<<u,u+=8,c+=E[i++]<<u,u+=8),_=w[c&m];t:for(;;){if(g=_>>>24,c>>>=g,u-=g,g=_>>>16&255,0===g)R[a++]=65535&_;else{if(!(16&g)){if(0==(64&g)){_=w[(65535&_)+(c&(1<<g)-1)];continue t}if(32&g){A.mode=12;break e}e.msg="invalid literal/length code",A.mode=30;break e}v=65535&_,g&=15,g&&(u<g&&(c+=E[i++]<<u,u+=8),v+=c&(1<<g)-1,c>>>=g,u-=g),u<15&&(c+=E[i++]<<u,u+=8,c+=E[i++]<<u,u+=8),_=b[c&k];i:for(;;){if(g=_>>>24,c>>>=g,u-=g,g=_>>>16&255,!(16&g)){if(0==(64&g)){_=b[(65535&_)+(c&(1<<g)-1)];continue i}e.msg="invalid distance code",A.mode=30;break e}if(p=65535&_,g&=15,u<g&&(c+=E[i++]<<u,u+=8,u<g&&(c+=E[i++]<<u,u+=8)),p+=c&(1<<g)-1,p>o){e.msg="invalid distance too far back",A.mode=30;break e}if(c>>>=g,u-=g,g=a-r,p>g){if(g=p-g,g>d&&A.sane){e.msg="invalid distance too far back",A.mode=30;break e}if(y=0,x=h,0===f){if(y+=l-g,g<v){v-=g;do{R[a++]=h[y++]}while(--g);y=a-p,x=R}}else if(f<g){if(y+=l+f-g,g-=f,g<v){v-=g;do{R[a++]=h[y++]}while(--g);if(y=0,f<v){g=f,v-=g;do{R[a++]=h[y++]}while(--g);y=a-p,x=R}}}else if(y+=f-g,g<v){v-=g;do{R[a++]=h[y++]}while(--g);y=a-p,x=R}for(;v>2;)R[a++]=x[y++],R[a++]=x[y++],R[a++]=x[y++],v-=3;v&&(R[a++]=x[y++],v>1&&(R[a++]=x[y++]))}else{y=a-p;do{R[a++]=R[y++],R[a++]=R[y++],R[a++]=R[y++],v-=3}while(v>2);v&&(R[a++]=R[y++],v>1&&(R[a++]=R[y++]))}break}}break}}while(i<n&&a<s);v=u>>3,i-=v,u-=v<<3,c&=(1<<u)-1,e.next_in=i,e.next_out=a,e.avail_in=i<n?n-i+5:5-(i-n),e.avail_out=a<s?s-a+257:257-(a-s),A.hold=c,A.bits=u};const a=15,r=new Uint16Array([3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0]),s=new Uint8Array([16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78]),o=new 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R(){this.mode=0,this.last=!1,this.wrap=0,this.havedict=!1,this.flags=0,this.dmax=0,this.check=0,this.total=0,this.head=null,this.wbits=0,this.wsize=0,this.whave=0,this.wnext=0,this.window=null,this.hold=0,this.bits=0,this.length=0,this.offset=0,this.extra=0,this.lencode=null,this.distcode=null,this.lenbits=0,this.distbits=0,this.ncode=0,this.nlen=0,this.ndist=0,this.have=0,this.next=null,this.lens=new Uint16Array(320),this.work=new Uint16Array(288),this.lendyn=null,this.distdyn=null,this.sane=0,this.back=0,this.was=0}const A=e=>{if(!e||!e.state)return k;const t=e.state;return e.total_in=e.total_out=t.total=0,e.msg="",t.wrap&&(e.adler=1&t.wrap),t.mode=1,t.last=0,t.havedict=0,t.dmax=32768,t.head=null,t.hold=0,t.bits=0,t.lencode=t.lendyn=new Int32Array(852),t.distcode=t.distdyn=new Int32Array(592),t.sane=1,t.back=-1,w},Z=e=>{if(!e||!e.state)return k;const t=e.state;return t.wsize=0,t.whave=0,t.wnext=0,A(e)},S=(e,t)=>{let i;if(!e||!e.state)return k;const n=e.state;return 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Uint8Array(r.wsize)),n>=r.wsize?(r.window.set(t.subarray(i-r.wsize,i),0),r.wnext=0,r.whave=r.wsize):(a=r.wsize-r.wnext,a>n&&(a=n),r.window.set(t.subarray(i-n,i-n+a),r.wnext),(n-=a)?(r.window.set(t.subarray(i-n,i),0),r.wnext=n,r.whave=r.wsize):(r.wnext+=a,r.wnext===r.wsize&&(r.wnext=0),r.whave<r.wsize&&(r.whave+=a))),0};var N={inflateReset:Z,inflateReset2:S,inflateResetKeep:A,inflateInit:e=>U(e,15),inflateInit2:U,inflate:(t,a)=>{let r,s,o,l,f,R,A,Z,S,U,O,T,D,N,C,F,z,L,M,H,j,K,P=0;const Y=new Uint8Array(4);let G,X;const W=new Uint8Array([16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]);if(!t||!t.state||!t.output||!t.input&&0!==t.avail_in)return k;r=t.state,r.mode===y&&(r.mode=13),f=t.next_out,o=t.output,A=t.avail_out,l=t.next_in,s=t.input,R=t.avail_in,Z=r.hold,S=r.bits,U=R,O=A,K=w;e:for(;;)switch(r.mode){case 1:if(0===r.wrap){r.mode=13;break}for(;S<16;){if(0===R)break 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e;T=0;do{j=s[l+T++],r.head&&j&&r.length<65536&&(r.head.name+=String.fromCharCode(j))}while(j&&T<R);if(512&r.flags&&(r.check=i(r.check,s,T,l)),R-=T,l+=T,j)break e}else r.head&&(r.head.name=null);r.length=0,r.mode=8;case 8:if(4096&r.flags){if(0===R)break e;T=0;do{j=s[l+T++],r.head&&j&&r.length<65536&&(r.head.comment+=String.fromCharCode(j))}while(j&&T<R);if(512&r.flags&&(r.check=i(r.check,s,T,l)),R-=T,l+=T,j)break e}else r.head&&(r.head.comment=null);r.mode=9;case 9:if(512&r.flags){for(;S<16;){if(0===R)break e;R--,Z+=s[l++]<<S,S+=8}if(Z!==(65535&r.check)){t.msg="header crc mismatch",r.mode=x;break}Z=0,S=0}r.head&&(r.head.hcrc=r.flags>>9&1,r.head.done=!0),t.adler=r.check=0,r.mode=y;break;case 10:for(;S<32;){if(0===R)break e;R--,Z+=s[l++]<<S,S+=8}t.adler=r.check=E(Z),Z=0,S=0,r.mode=11;case 11:if(0===r.havedict)return t.next_out=f,t.avail_out=A,t.next_in=l,t.avail_in=R,r.hold=Z,r.bits=S,m;t.adler=r.check=1,r.mode=y;case y:if(a===c||a===u)break e;case 13:if(r.last){Z>>>=7&S,S-=7&S,r.mode=27;break}for(;S<3;){if(0===R)break e;R--,Z+=s[l++]<<S,S+=8}switch(r.last=1&Z,Z>>>=1,S-=1,3&Z){case 0:r.mode=14;break;case 1:if(B(r),r.mode=20,a===u){Z>>>=2,S-=2;break e}break;case 2:r.mode=17;break;case 3:t.msg="invalid block type",r.mode=x}Z>>>=2,S-=2;break;case 14:for(Z>>>=7&S,S-=7&S;S<32;){if(0===R)break e;R--,Z+=s[l++]<<S,S+=8}if((65535&Z)!=(Z>>>16^65535)){t.msg="invalid stored block lengths",r.mode=x;break}if(r.length=65535&Z,Z=0,S=0,r.mode=15,a===u)break e;case 15:r.mode=16;case 16:if(T=r.length,T){if(T>R&&(T=R),T>A&&(T=A),0===T)break e;o.set(s.subarray(l,l+T),f),R-=T,l+=T,A-=T,f+=T,r.length-=T;break}r.mode=y;break;case 17:for(;S<14;){if(0===R)break e;R--,Z+=s[l++]<<S,S+=8}if(r.nlen=257+(31&Z),Z>>>=5,S-=5,r.ndist=1+(31&Z),Z>>>=5,S-=5,r.ncode=4+(15&Z),Z>>>=4,S-=4,r.nlen>286||r.ndist>30){t.msg="too many length or distance symbols",r.mode=x;break}r.have=0,r.mode=18;case 18:for(;r.have<r.ncode;){for(;S<3;){if(0===R)break 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dist/pako.min.js

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i.status=73;if(73===i.status)if(i.gzhead.name){n=i.pending;do{if(i.pending===i.pending_buf_size&&(i.gzhead.hcrc&&i.pending>n&&(t.adler=c(t.adler,i.pending_buf,i.pending-n,n)),I(t),n=i.pending,i.pending===i.pending_buf_size)){r=1;break}T(i,r=i.gzindex<i.gzhead.name.length?255&i.gzhead.name.charCodeAt(i.gzindex++):0)}while(0!==r);i.gzhead.hcrc&&i.pending>n&&(t.adler=c(t.adler,i.pending_buf,i.pending-n,n)),0===r&&(i.gzindex=0,i.status=91)}else i.status=91;if(91===i.status)if(i.gzhead.comment){n=i.pending;do{if(i.pending===i.pending_buf_size&&(i.gzhead.hcrc&&i.pending>n&&(t.adler=c(t.adler,i.pending_buf,i.pending-n,n)),I(t),n=i.pending,i.pending===i.pending_buf_size)){r=1;break}T(i,r=i.gzindex<i.gzhead.comment.length?255&i.gzhead.comment.charCodeAt(i.gzindex++):0)}while(0!==r);i.gzhead.hcrc&&i.pending>n&&(t.adler=c(t.adler,i.pending_buf,i.pending-n,n)),0===r&&(i.status=103)}else i.status=103;if(103===i.status&&(i.gzhead.hcrc?(i.pending+2>i.pending_buf_size&&I(t),i.pending+2<=i.pending_buf_size&&(T(i,255&t.adler),T(i,t.adler>>8&255),t.adler=0,i.status=E)):i.status=E),0!==i.pending){if(I(t),0===t.avail_out)return i.last_flush=-1,b}else if(0===t.avail_in&&O(e)<=O(a)&&e!==f)return N(t,-5);if(666===i.status&&0!==t.avail_in)return N(t,-5);if(0!==t.avail_in||0!==i.lookahead||e!==d&&666!==i.status){var o=2===i.strategy?function(t,e){for(var a;;){if(0===t.lookahead&&(H(t),0===t.lookahead)){if(e===d)return A;break}if(t.match_length=0,a=h._tr_tally(t,0,t.window[t.strstart]),t.lookahead--,t.strstart++,a&&(U(t,!1),0===t.strm.avail_out))return A}return t.insert=0,e===f?(U(t,!0),0===t.strm.avail_out?R:C):t.last_lit&&(U(t,!1),0===t.strm.avail_out)?A:Z}(i,e):3===i.strategy?function(t,e){for(var a,i,n,r,s=t.window;;){if(t.lookahead<=z){if(H(t),t.lookahead<=z&&e===d)return A;if(0===t.lookahead)break}if(t.match_length=0,t.lookahead>=x&&0<t.strstart&&(i=s[n=t.strstart-1])===s[++n]&&i===s[++n]&&i===s[++n]){r=t.strstart+z;do{}while(i===s[++n]&&i===s[++n]&&i===s[++n]&&i===s[++n]&&i===s[++n]&&i===s[++n]&&i===s[++n]&&i===s[++n]&&n<r);t.match_length=z-(r-n),t.match_length>t.lookahead&&(t.match_length=t.lookahead)}if(t.match_length>=x?(a=h._tr_tally(t,1,t.match_length-x),t.lookahead-=t.match_length,t.strstart+=t.match_length,t.match_length=0):(a=h._tr_tally(t,0,t.window[t.strstart]),t.lookahead--,t.strstart++),a&&(U(t,!1),0===t.strm.avail_out))return A}return t.insert=0,e===f?(U(t,!0),0===t.strm.avail_out?R:C):t.last_lit&&(U(t,!1),0===t.strm.avail_out)?A:Z}(i,e):l[i.level].func(i,e);if(o!==R&&o!==C||(i.status=666),o===A||o===R)return 0===t.avail_out&&(i.last_flush=-1),b;if(o===Z&&(1===e?h._tr_align(i):5!==e&&(h._tr_stored_block(i,0,0,!1),3===e&&(D(i.head),0===i.lookahead&&(i.strstart=0,i.block_start=0,i.insert=0))),I(t),0===t.avail_out))return i.last_flush=-1,b}return e!==f?b:i.wrap<=0?1:(2===i.wrap?(T(i,255&t.adler),T(i,t.adler>>8&255),T(i,t.adler>>16&255),T(i,t.adler>>24&255),T(i,255&t.total_in),T(i,t.total_in>>8&255),T(i,t.total_in>>16&255),T(i,t.total_in>>24&255)):(F(i,t.adler>>>16),F(i,65535&t.adler)),I(t),0<i.wrap&&(i.wrap=-i.wrap),0!==i.pending?b:1)},a.deflateEnd=function(t){var e;return t&&t.state?(e=t.state.status)!==S&&69!==e&&73!==e&&91!==e&&103!==e&&e!==E&&666!==e?N(t,g):(t.state=null,e===E?N(t,-3):b):g},a.deflateSetDictionary=function(t,e){var a,i,n,r,s,o,l,h,d=e.length;if(!t||!t.state)return g;if(2===(r=(a=t.state).wrap)||1===r&&a.status!==S||a.lookahead)return g;for(1===r&&(t.adler=u(t.adler,e,d,0)),a.wrap=0,d>=a.w_size&&(0===r&&(D(a.head),a.strstart=0,a.block_start=0,a.insert=0),h=new _.Buf8(a.w_size),_.arraySet(h,e,d-a.w_size,a.w_size,0),e=h,d=a.w_size),s=t.avail_in,o=t.next_in,l=t.input,t.avail_in=d,t.next_in=0,t.input=e,H(a);a.lookahead>=x;){for(i=a.strstart,n=a.lookahead-(x-1);a.ins_h=(a.ins_h<<a.hash_shift^a.window[i+x-1])&a.hash_mask,a.prev[i&a.w_mask]=a.head[a.ins_h],a.head[a.ins_h]=i,i++,--n;);a.strstart=i,a.lookahead=x-1,H(a)}return a.strstart+=a.lookahead,a.block_start=a.strstart,a.insert=a.lookahead,a.lookahead=0,a.match_length=a.prev_length=x-1,a.match_available=0,t.next_in=o,t.input=l,t.avail_in=s,a.wrap=r,b},a.deflateInfo="pako deflate (from Nodeca project)"},{"../utils/common":3,"./adler32":5,"./crc32":7,"./messages":13,"./trees":14}],9:[function(t,e,a){"use strict";e.exports=function(){this.text=0,this.time=0,this.xflags=0,this.os=0,this.extra=null,this.extra_len=0,this.name="",this.comment="",this.hcrc=0,this.done=!1}},{}],10:[function(t,e,a){"use strict";e.exports=function(t,e){var a,i,n,r,s,o,l,h,d,f,_,u,c,b,g,m,w,p,v,k,y,x,z,B,S;a=t.state,i=t.next_in,B=t.input,n=i+(t.avail_in-5),r=t.next_out,S=t.output,s=r-(e-t.avail_out),o=r+(t.avail_out-257),l=a.dmax,h=a.wsize,d=a.whave,f=a.wnext,_=a.window,u=a.hold,c=a.bits,b=a.lencode,g=a.distcode,m=(1<<a.lenbits)-1,w=(1<<a.distbits)-1;t:do{c<15&&(u+=B[i++]<<c,c+=8,u+=B[i++]<<c,c+=8),p=b[u&m];e:for(;;){if(u>>>=v=p>>>24,c-=v,0===(v=p>>>16&255))S[r++]=65535&p;else{if(!(16&v)){if(0==(64&v)){p=b[(65535&p)+(u&(1<<v)-1)];continue e}if(32&v){a.mode=12;break t}t.msg="invalid literal/length code",a.mode=30;break t}k=65535&p,(v&=15)&&(c<v&&(u+=B[i++]<<c,c+=8),k+=u&(1<<v)-1,u>>>=v,c-=v),c<15&&(u+=B[i++]<<c,c+=8,u+=B[i++]<<c,c+=8),p=g[u&w];a:for(;;){if(u>>>=v=p>>>24,c-=v,!(16&(v=p>>>16&255))){if(0==(64&v)){p=g[(65535&p)+(u&(1<<v)-1)];continue a}t.msg="invalid distance code",a.mode=30;break t}if(y=65535&p,c<(v&=15)&&(u+=B[i++]<<c,(c+=8)<v&&(u+=B[i++]<<c,c+=8)),l<(y+=u&(1<<v)-1)){t.msg="invalid distance too far back",a.mode=30;break t}if(u>>>=v,c-=v,(v=r-s)<y){if(d<(v=y-v)&&a.sane){t.msg="invalid distance too far back",a.mode=30;break t}if(z=_,(x=0)===f){if(x+=h-v,v<k){for(k-=v;S[r++]=_[x++],--v;);x=r-y,z=S}}else if(f<v){if(x+=h+f-v,(v-=f)<k){for(k-=v;S[r++]=_[x++],--v;);if(x=0,f<k){for(k-=v=f;S[r++]=_[x++],--v;);x=r-y,z=S}}}else if(x+=f-v,v<k){for(k-=v;S[r++]=_[x++],--v;);x=r-y,z=S}for(;2<k;)S[r++]=z[x++],S[r++]=z[x++],S[r++]=z[x++],k-=3;k&&(S[r++]=z[x++],1<k&&(S[r++]=z[x++]))}else{for(x=r-y;S[r++]=S[x++],S[r++]=S[x++],S[r++]=S[x++],2<(k-=3););k&&(S[r++]=S[x++],1<k&&(S[r++]=S[x++]))}break}}break}}while(i<n&&r<o);i-=k=c>>3,u&=(1<<(c-=k<<3))-1,t.next_in=i,t.next_out=r,t.avail_in=i<n?n-i+5:5-(i-n),t.avail_out=r<o?o-r+257:257-(r-o),a.hold=u,a.bits=c}},{}],11:[function(t,e,a){"use strict";var Z=t("../utils/common"),R=t("./adler32"),C=t("./crc32"),N=t("./inffast"),O=t("./inftrees"),D=1,I=2,U=0,T=-2,F=1,i=852,n=592;function L(t){return(t>>>24&255)+(t>>>8&65280)+((65280&t)<<8)+((255&t)<<24)}function 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t;for(u=0;y=i[r+u++],a.head&&y&&a.length<65536&&(a.head.name+=String.fromCharCode(y)),y&&u<o;);if(512&a.flags&&(a.check=C(a.check,i,u,r)),o-=u,r+=u,y)break t}else a.head&&(a.head.name=null);a.length=0,a.mode=8;case 8:if(4096&a.flags){if(0===o)break t;for(u=0;y=i[r+u++],a.head&&y&&a.length<65536&&(a.head.comment+=String.fromCharCode(y)),y&&u<o;);if(512&a.flags&&(a.check=C(a.check,i,u,r)),o-=u,r+=u,y)break t}else a.head&&(a.head.comment=null);a.mode=9;case 9:if(512&a.flags){for(;d<16;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}if(h!==(65535&a.check)){t.msg="header crc mismatch",a.mode=30;break}d=h=0}a.head&&(a.head.hcrc=a.flags>>9&1,a.head.done=!0),t.adler=a.check=0,a.mode=12;break;case 10:for(;d<32;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}t.adler=a.check=L(h),d=h=0,a.mode=11;case 11:if(0===a.havedict)return t.next_out=s,t.avail_out=l,t.next_in=r,t.avail_in=o,a.hold=h,a.bits=d,2;t.adler=a.check=1,a.mode=12;case 12:if(5===e||6===e)break t;case 13:if(a.last){h>>>=7&d,d-=7&d,a.mode=27;break}for(;d<3;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}switch(a.last=1&h,d-=1,3&(h>>>=1)){case 0:a.mode=14;break;case 1:if(H(a),a.mode=20,6!==e)break;h>>>=2,d-=2;break t;case 2:a.mode=17;break;case 3:t.msg="invalid block type",a.mode=30}h>>>=2,d-=2;break;case 14:for(h>>>=7&d,d-=7&d;d<32;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}if((65535&h)!=(h>>>16^65535)){t.msg="invalid stored block lengths",a.mode=30;break}if(a.length=65535&h,d=h=0,a.mode=15,6===e)break t;case 15:a.mode=16;case 16:if(u=a.length){if(o<u&&(u=o),l<u&&(u=l),0===u)break t;Z.arraySet(n,i,r,u,s),o-=u,r+=u,l-=u,s+=u,a.length-=u;break}a.mode=12;break;case 17:for(;d<14;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}if(a.nlen=257+(31&h),h>>>=5,d-=5,a.ndist=1+(31&h),h>>>=5,d-=5,a.ncode=4+(15&h),h>>>=4,d-=4,286<a.nlen||30<a.ndist){t.msg="too many length or distance symbols",a.mode=30;break}a.have=0,a.mode=18;case 18:for(;a.have<a.ncode;){for(;d<3;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}a.lens[A[a.have++]]=7&h,h>>>=3,d-=3}for(;a.have<19;)a.lens[A[a.have++]]=0;if(a.lencode=a.lendyn,a.lenbits=7,z={bits:a.lenbits},x=O(0,a.lens,0,19,a.lencode,0,a.work,z),a.lenbits=z.bits,x){t.msg="invalid code lengths set",a.mode=30;break}a.have=0,a.mode=19;case 19:for(;a.have<a.nlen+a.ndist;){for(;m=(S=a.lencode[h&(1<<a.lenbits)-1])>>>16&255,w=65535&S,!((g=S>>>24)<=d);){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}if(w<16)h>>>=g,d-=g,a.lens[a.have++]=w;else{if(16===w){for(B=g+2;d<B;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}if(h>>>=g,d-=g,0===a.have){t.msg="invalid bit length repeat",a.mode=30;break}y=a.lens[a.have-1],u=3+(3&h),h>>>=2,d-=2}else if(17===w){for(B=g+3;d<B;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}d-=g,y=0,u=3+(7&(h>>>=g)),h>>>=3,d-=3}else{for(B=g+7;d<B;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}d-=g,y=0,u=11+(127&(h>>>=g)),h>>>=7,d-=7}if(a.have+u>a.nlen+a.ndist){t.msg="invalid bit length repeat",a.mode=30;break}for(;u--;)a.lens[a.have++]=y}}if(30===a.mode)break;if(0===a.lens[256]){t.msg="invalid code -- missing end-of-block",a.mode=30;break}if(a.lenbits=9,z={bits:a.lenbits},x=O(D,a.lens,0,a.nlen,a.lencode,0,a.work,z),a.lenbits=z.bits,x){t.msg="invalid literal/lengths set",a.mode=30;break}if(a.distbits=6,a.distcode=a.distdyn,z={bits:a.distbits},x=O(I,a.lens,a.nlen,a.ndist,a.distcode,0,a.work,z),a.distbits=z.bits,x){t.msg="invalid distances set",a.mode=30;break}if(a.mode=20,6===e)break t;case 20:a.mode=21;case 21:if(6<=o&&258<=l){t.next_out=s,t.avail_out=l,t.next_in=r,t.avail_in=o,a.hold=h,a.bits=d,N(t,_),s=t.next_out,n=t.output,l=t.avail_out,r=t.next_in,i=t.input,o=t.avail_in,h=a.hold,d=a.bits,12===a.mode&&(a.back=-1);break}for(a.back=0;m=(S=a.lencode[h&(1<<a.lenbits)-1])>>>16&255,w=65535&S,!((g=S>>>24)<=d);){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}if(m&&0==(240&m)){for(p=g,v=m,k=w;m=(S=a.lencode[k+((h&(1<<p+v)-1)>>p)])>>>16&255,w=65535&S,!(p+(g=S>>>24)<=d);){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}h>>>=p,d-=p,a.back+=p}if(h>>>=g,d-=g,a.back+=g,a.length=w,0===m){a.mode=26;break}if(32&m){a.back=-1,a.mode=12;break}if(64&m){t.msg="invalid literal/length code",a.mode=30;break}a.extra=15&m,a.mode=22;case 22:if(a.extra){for(B=a.extra;d<B;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}a.length+=h&(1<<a.extra)-1,h>>>=a.extra,d-=a.extra,a.back+=a.extra}a.was=a.length,a.mode=23;case 23:for(;m=(S=a.distcode[h&(1<<a.distbits)-1])>>>16&255,w=65535&S,!((g=S>>>24)<=d);){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}if(0==(240&m)){for(p=g,v=m,k=w;m=(S=a.distcode[k+((h&(1<<p+v)-1)>>p)])>>>16&255,w=65535&S,!(p+(g=S>>>24)<=d);){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}h>>>=p,d-=p,a.back+=p}if(h>>>=g,d-=g,a.back+=g,64&m){t.msg="invalid distance code",a.mode=30;break}a.offset=w,a.extra=15&m,a.mode=24;case 24:if(a.extra){for(B=a.extra;d<B;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}a.offset+=h&(1<<a.extra)-1,h>>>=a.extra,d-=a.extra,a.back+=a.extra}if(a.offset>a.dmax){t.msg="invalid distance too far back",a.mode=30;break}a.mode=25;case 25:if(0===l)break t;if(u=_-l,a.offset>u){if((u=a.offset-u)>a.whave&&a.sane){t.msg="invalid distance too far back",a.mode=30;break}u>a.wnext?(u-=a.wnext,c=a.wsize-u):c=a.wnext-u,u>a.length&&(u=a.length),b=a.window}else b=n,c=s-a.offset,u=a.length;for(l<u&&(u=l),l-=u,a.length-=u;n[s++]=b[c++],--u;);0===a.length&&(a.mode=21);break;case 26:if(0===l)break t;n[s++]=a.length,l--,a.mode=21;break;case 27:if(a.wrap){for(;d<32;){if(0===o)break t;o--,h|=i[r++]<<d,d+=8}if(_-=l,t.total_out+=_,a.total+=_,_&&(t.adler=a.check=a.flags?C(a.check,n,_,s-_):R(a.check,n,_,s-_)),_=l,(a.flags?h:L(h))!==a.check){t.msg="incorrect data check",a.mode=30;break}d=h=0}a.mode=28;case 28:if(a.wrap&&a.flags){for(;d<32;){if(0===o)break t;o--,h+=i[r++]<<d,d+=8}if(h!==(4294967295&a.total)){t.msg="incorrect length check",a.mode=30;break}d=h=0}a.mode=29;case 29:x=1;break t;case 30:x=-3;break t;case 31:return-4;case 32:default:return T}return t.next_out=s,t.avail_out=l,t.next_in=r,t.avail_in=o,a.hold=h,a.bits=d,(a.wsize||_!==t.avail_out&&a.mode<30&&(a.mode<27||4!==e))&&j(t,t.output,t.next_out,_-t.avail_out)?(a.mode=31,-4):(f-=t.avail_in,_-=t.avail_out,t.total_in+=f,t.total_out+=_,a.total+=_,a.wrap&&_&&(t.adler=a.check=a.flags?C(a.check,n,_,t.next_out-_):R(a.check,n,_,t.next_out-_)),t.data_type=a.bits+(a.last?64:0)+(12===a.mode?128:0)+(20===a.mode||15===a.mode?256:0),(0===f&&0===_||4===e)&&x===U&&(x=-5),x)},a.inflateEnd=function(t){if(!t||!t.state)return T;var e=t.state;return e.window&&(e.window=null),t.state=null,U},a.inflateGetHeader=function(t,e){var a;return t&&t.state?0==(2&(a=t.state).wrap)?T:((a.head=e).done=!1,U):T},a.inflateSetDictionary=function(t,e){var a,i=e.length;return t&&t.state?0!==(a=t.state).wrap&&11!==a.mode?T:11===a.mode&&R(1,e,i,0)!==a.check?-3:j(t,e,i,i)?(a.mode=31,-4):(a.havedict=1,U):T},a.inflateInfo="pako inflate (from Nodeca project)"},{"../utils/common":3,"./adler32":5,"./crc32":7,"./inffast":10,"./inftrees":12}],12:[function(t,e,a){"use strict";var D=t("../utils/common"),I=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0],U=[16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78],T=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0],F=[16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64];e.exports=function(t,e,a,i,n,r,s,o){var l,h,d,f,_,u,c,b,g,m=o.bits,w=0,p=0,v=0,k=0,y=0,x=0,z=0,B=0,S=0,E=0,A=null,Z=0,R=new D.Buf16(16),C=new D.Buf16(16),N=null,O=0;for(w=0;w<=15;w++)R[w]=0;for(p=0;p<i;p++)R[e[a+p]]++;for(y=m,k=15;1<=k&&0===R[k];k--);if(k<y&&(y=k),0===k)return n[r++]=20971520,n[r++]=20971520,o.bits=1,0;for(v=1;v<k&&0===R[v];v++);for(y<v&&(y=v),w=B=1;w<=15;w++)if(B<<=1,(B-=R[w])<0)return-1;if(0<B&&(0===t||1!==k))return-1;for(C[1]=0,w=1;w<15;w++)C[w+1]=C[w]+R[w];for(p=0;p<i;p++)0!==e[a+p]&&(s[C[e[a+p]]++]=p);if(0===t?(A=N=s,u=19):1===t?(A=I,Z-=257,N=U,O-=257,u=256):(A=T,N=F,u=-1),w=v,_=r,z=p=E=0,d=-1,f=(S=1<<(x=y))-1,1===t&&852<S||2===t&&592<S)return 1;for(;;){for(c=w-z,s[p]<u?(b=0,g=s[p]):s[p]>u?(b=N[O+s[p]],g=A[Z+s[p]]):(b=96,g=0),l=1<<w-z,v=h=1<<x;n[_+(E>>z)+(h-=l)]=c<<24|b<<16|g|0,0!==h;);for(l=1<<w-1;E&l;)l>>=1;if(0!==l?(E&=l-1,E+=l):E=0,p++,0==--R[w]){if(w===k)break;w=e[a+s[p]]}if(y<w&&(E&f)!==d){for(0===z&&(z=y),_+=v,B=1<<(x=w-z);x+z<k&&!((B-=R[x+z])<=0);)x++,B<<=1;if(S+=1<<x,1===t&&852<S||2===t&&592<S)return 1;n[d=E&f]=y<<24|x<<16|_-r|0}}return 0!==E&&(n[_+E]=w-z<<24|64<<16|0),o.bits=y,0}},{"../utils/common":3}],13:[function(t,e,a){"use strict";e.exports={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"}},{}],14:[function(t,e,a){"use strict";var l=t("../utils/common"),o=0,h=1;function i(t){for(var e=t.length;0<=--e;)t[e]=0}var d=0,s=29,f=256,_=f+1+s,u=30,c=19,g=2*_+1,m=15,n=16,b=7,w=256,p=16,v=17,k=18,y=[0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0],x=[0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13],z=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7],B=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],S=new Array(2*(_+2));i(S);var E=new Array(2*u);i(E);var A=new Array(512);i(A);var Z=new Array(256);i(Z);var R=new Array(s);i(R);var C,N,O,D=new Array(u);function I(t,e,a,i,n){this.static_tree=t,this.extra_bits=e,this.extra_base=a,this.elems=i,this.max_length=n,this.has_stree=t&&t.length}function r(t,e){this.dyn_tree=t,this.max_code=0,this.stat_desc=e}function U(t){return t<256?A[t]:A[256+(t>>>7)]}function T(t,e){t.pending_buf[t.pending++]=255&e,t.pending_buf[t.pending++]=e>>>8&255}function F(t,e,a){t.bi_valid>n-a?(t.bi_buf|=e<<t.bi_valid&65535,T(t,t.bi_buf),t.bi_buf=e>>n-t.bi_valid,t.bi_valid+=a-n):(t.bi_buf|=e<<t.bi_valid&65535,t.bi_valid+=a)}function L(t,e,a){F(t,a[2*e],a[2*e+1])}function H(t,e){for(var a=0;a|=1&t,t>>>=1,a<<=1,0<--e;);return a>>>1}function j(t,e,a){var i,n,r=new Array(m+1),s=0;for(i=1;i<=m;i++)r[i]=s=s+a[i-1]<<1;for(n=0;n<=e;n++){var o=t[2*n+1];0!==o&&(t[2*n]=H(r[o]++,o))}}function K(t){var e;for(e=0;e<_;e++)t.dyn_ltree[2*e]=0;for(e=0;e<u;e++)t.dyn_dtree[2*e]=0;for(e=0;e<c;e++)t.bl_tree[2*e]=0;t.dyn_ltree[2*w]=1,t.opt_len=t.static_len=0,t.last_lit=t.matches=0}function M(t){8<t.bi_valid?T(t,t.bi_buf):0<t.bi_valid&&(t.pending_buf[t.pending++]=t.bi_buf),t.bi_buf=0,t.bi_valid=0}function P(t,e,a,i){var n=2*e,r=2*a;return t[n]<t[r]||t[n]===t[r]&&i[e]<=i[a]}function Y(t,e,a){for(var i=t.heap[a],n=a<<1;n<=t.heap_len&&(n<t.heap_len&&P(e,t.heap[n+1],t.heap[n],t.depth)&&n++,!P(e,i,t.heap[n],t.depth));)t.heap[a]=t.heap[n],a=n,n<<=1;t.heap[a]=i}function q(t,e,a){var i,n,r,s,o=0;if(0!==t.last_lit)for(;i=t.pending_buf[t.d_buf+2*o]<<8|t.pending_buf[t.d_buf+2*o+1],n=t.pending_buf[t.l_buf+o],o++,0===i?L(t,n,e):(L(t,(r=Z[n])+f+1,e),0!==(s=y[r])&&F(t,n-=R[r],s),L(t,r=U(--i),a),0!==(s=x[r])&&F(t,i-=D[r],s)),o<t.last_lit;);L(t,w,e)}function G(t,e){var 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a,i,n,r,s,o,l=e.dyn_tree,h=e.max_code,d=e.stat_desc.static_tree,f=e.stat_desc.has_stree,_=e.stat_desc.extra_bits,u=e.stat_desc.extra_base,c=e.stat_desc.max_length,b=0;for(r=0;r<=m;r++)t.bl_count[r]=0;for(l[2*t.heap[t.heap_max]+1]=0,a=t.heap_max+1;a<g;a++)c<(r=l[2*l[2*(i=t.heap[a])+1]+1]+1)&&(r=c,b++),l[2*i+1]=r,h<i||(t.bl_count[r]++,s=0,u<=i&&(s=_[i-u]),o=l[2*i],t.opt_len+=o*(r+s),f&&(t.static_len+=o*(d[2*i+1]+s)));if(0!==b){do{for(r=c-1;0===t.bl_count[r];)r--;t.bl_count[r]--,t.bl_count[r+1]+=2,t.bl_count[c]--,b-=2}while(0<b);for(r=c;0!==r;r--)for(i=t.bl_count[r];0!==i;)h<(n=t.heap[--a])||(l[2*n+1]!==r&&(t.opt_len+=(r-l[2*n+1])*l[2*n],l[2*n+1]=r),i--)}}(t,e),j(r,h,t.bl_count)}function X(t,e,a){var i,n,r=-1,s=e[1],o=0,l=7,h=4;for(0===s&&(l=138,h=3),e[2*(a+1)+1]=65535,i=0;i<=a;i++)n=s,s=e[2*(i+1)+1],++o<l&&n===s||(o<h?t.bl_tree[2*n]+=o:0!==n?(n!==r&&t.bl_tree[2*n]++,t.bl_tree[2*p]++):o<=10?t.bl_tree[2*v]++:t.bl_tree[2*k]++,r=n,(o=0)===s?(l=138,h=3):n===s?(l=6,h=3):(l=7,h=4))}function 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n;for(y(t,e-257,5),y(t,a-1,5),y(t,i-4,4),n=0;n<i;n++)y(t,t.bl_tree[2*o[n]+1],3);T(t,t.dyn_ltree,e-1),T(t,t.dyn_dtree,a-1)})(t,t.l_desc.max_code+1,t.d_desc.max_code+1,l+1),S(t,t.dyn_ltree,t.dyn_dtree)),E(t),n&&R(t)},_tr_tally:(t,a,i)=>(t.pending_buf[t.d_buf+2*t.last_lit]=a>>>8&255,t.pending_buf[t.d_buf+2*t.last_lit+1]=255&a,t.pending_buf[t.l_buf+t.last_lit]=255&i,t.last_lit++,0===a?t.dyn_ltree[2*i]++:(t.matches++,a--,t.dyn_ltree[2*(f[i]+e+1)]++,t.dyn_dtree[2*k(a)]++),t.last_lit===t.lit_bufsize-1),_tr_align:t=>{y(t,2,3),x(t,256,h),(t=>{16===t.bi_valid?(v(t,t.bi_buf),t.bi_buf=0,t.bi_valid=0):t.bi_valid>=8&&(t.pending_buf[t.pending++]=255&t.bi_buf,t.bi_buf>>=8,t.bi_valid-=8)})(t)}};var N=(t,e,a,i)=>{let n=65535&t|0,s=t>>>16&65535|0,r=0;for(;0!==a;){r=a>2e3?2e3:a,a-=r;do{n=n+e[i++]|0,s=s+n|0}while(--r);n%=65521,s%=65521}return n|s<<16|0};const B=new Uint32Array((()=>{let t,e=[];for(var a=0;a<256;a++){t=a;for(var i=0;i<8;i++)t=1&t?3988292384^t>>>1:t>>>1;e[a]=t}return e})());var C=(t,e,a,i)=>{const n=B,s=i+a;t^=-1;for(let a=i;a<s;a++)t=t>>>8^n[255&(t^e[a])];return-1^t},H={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"},M={Z_NO_FLUSH:0,Z_PARTIAL_FLUSH:1,Z_SYNC_FLUSH:2,Z_FULL_FLUSH:3,Z_FINISH:4,Z_BLOCK:5,Z_TREES:6,Z_OK:0,Z_STREAM_END:1,Z_NEED_DICT:2,Z_ERRNO:-1,Z_STREAM_ERROR:-2,Z_DATA_ERROR:-3,Z_MEM_ERROR:-4,Z_BUF_ERROR:-5,Z_NO_COMPRESSION:0,Z_BEST_SPEED:1,Z_BEST_COMPRESSION:9,Z_DEFAULT_COMPRESSION:-1,Z_FILTERED:1,Z_HUFFMAN_ONLY:2,Z_RLE:3,Z_FIXED:4,Z_DEFAULT_STRATEGY:0,Z_BINARY:0,Z_TEXT:1,Z_UNKNOWN:2,Z_DEFLATED:8};const{_tr_init:j,_tr_stored_block:K,_tr_flush_block:P,_tr_tally:Y,_tr_align:G}=L,{Z_NO_FLUSH:X,Z_PARTIAL_FLUSH:W,Z_FULL_FLUSH:q,Z_FINISH:J,Z_BLOCK:Q,Z_OK:V,Z_STREAM_END:$,Z_STREAM_ERROR:tt,Z_DATA_ERROR:et,Z_BUF_ERROR:at,Z_DEFAULT_COMPRESSION:it,Z_FILTERED:nt,Z_HUFFMAN_ONLY:st,Z_RLE:rt,Z_FIXED:lt,Z_DEFAULT_STRATEGY:ot,Z_UNKNOWN:ht,Z_DEFLATED:dt}=M,_t=258,ft=262,ct=103,ut=113,wt=666,bt=(t,e)=>(t.msg=H[e],e),gt=t=>(t<<1)-(t>4?9:0),mt=t=>{let e=t.length;for(;--e>=0;)t[e]=0};let pt=(t,e,a)=>(e<<t.hash_shift^a)&t.hash_mask;const kt=t=>{const e=t.state;let a=e.pending;a>t.avail_out&&(a=t.avail_out),0!==a&&(t.output.set(e.pending_buf.subarray(e.pending_out,e.pending_out+a),t.next_out),t.next_out+=a,e.pending_out+=a,t.total_out+=a,t.avail_out-=a,e.pending-=a,0===e.pending&&(e.pending_out=0))},vt=(t,e)=>{P(t,t.block_start>=0?t.block_start:-1,t.strstart-t.block_start,e),t.block_start=t.strstart,kt(t.strm)},yt=(t,e)=>{t.pending_buf[t.pending++]=e},xt=(t,e)=>{t.pending_buf[t.pending++]=e>>>8&255,t.pending_buf[t.pending++]=255&e},zt=(t,e,a,i)=>{let n=t.avail_in;return n>i&&(n=i),0===n?0:(t.avail_in-=n,e.set(t.input.subarray(t.next_in,t.next_in+n),a),1===t.state.wrap?t.adler=N(t.adler,e,n,a):2===t.state.wrap&&(t.adler=C(t.adler,e,n,a)),t.next_in+=n,t.total_in+=n,n)},At=(t,e)=>{let a,i,n=t.max_chain_length,s=t.strstart,r=t.prev_length,l=t.nice_match;const o=t.strstart>t.w_size-ft?t.strstart-(t.w_size-ft):0,h=t.window,d=t.w_mask,_=t.prev,f=t.strstart+_t;let c=h[s+r-1],u=h[s+r];t.prev_length>=t.good_match&&(n>>=2),l>t.lookahead&&(l=t.lookahead);do{if(a=e,h[a+r]===u&&h[a+r-1]===c&&h[a]===h[s]&&h[++a]===h[s+1]){s+=2,a++;do{}while(h[++s]===h[++a]&&h[++s]===h[++a]&&h[++s]===h[++a]&&h[++s]===h[++a]&&h[++s]===h[++a]&&h[++s]===h[++a]&&h[++s]===h[++a]&&h[++s]===h[++a]&&s<f);if(i=_t-(f-s),s=f-_t,i>r){if(t.match_start=e,r=i,i>=l)break;c=h[s+r-1],u=h[s+r]}}}while((e=_[e&d])>o&&0!=--n);return r<=t.lookahead?r:t.lookahead},Et=t=>{const e=t.w_size;let a,i,n,s,r;do{if(s=t.window_size-t.lookahead-t.strstart,t.strstart>=e+(e-ft)){t.window.set(t.window.subarray(e,e+e),0),t.match_start-=e,t.strstart-=e,t.block_start-=e,i=t.hash_size,a=i;do{n=t.head[--a],t.head[a]=n>=e?n-e:0}while(--i);i=e,a=i;do{n=t.prev[--a],t.prev[a]=n>=e?n-e:0}while(--i);s+=e}if(0===t.strm.avail_in)break;if(i=zt(t.strm,t.window,t.strstart+t.lookahead,s),t.lookahead+=i,t.lookahead+t.insert>=3)for(r=t.strstart-t.insert,t.ins_h=t.window[r],t.ins_h=pt(t,t.ins_h,t.window[r+1]);t.insert&&(t.ins_h=pt(t,t.ins_h,t.window[r+3-1]),t.prev[r&t.w_mask]=t.head[t.ins_h],t.head[t.ins_h]=r,r++,t.insert--,!(t.lookahead+t.insert<3)););}while(t.lookahead<ft&&0!==t.strm.avail_in)},Rt=(t,e)=>{let a,i;for(;;){if(t.lookahead<ft){if(Et(t),t.lookahead<ft&&e===X)return 1;if(0===t.lookahead)break}if(a=0,t.lookahead>=3&&(t.ins_h=pt(t,t.ins_h,t.window[t.strstart+3-1]),a=t.prev[t.strstart&t.w_mask]=t.head[t.ins_h],t.head[t.ins_h]=t.strstart),0!==a&&t.strstart-a<=t.w_size-ft&&(t.match_length=At(t,a)),t.match_length>=3)if(i=Y(t,t.strstart-t.match_start,t.match_length-3),t.lookahead-=t.match_length,t.match_length<=t.max_lazy_match&&t.lookahead>=3){t.match_length--;do{t.strstart++,t.ins_h=pt(t,t.ins_h,t.window[t.strstart+3-1]),a=t.prev[t.strstart&t.w_mask]=t.head[t.ins_h],t.head[t.ins_h]=t.strstart}while(0!=--t.match_length);t.strstart++}else t.strstart+=t.match_length,t.match_length=0,t.ins_h=t.window[t.strstart],t.ins_h=pt(t,t.ins_h,t.window[t.strstart+1]);else i=Y(t,0,t.window[t.strstart]),t.lookahead--,t.strstart++;if(i&&(vt(t,!1),0===t.strm.avail_out))return 1}return t.insert=t.strstart<2?t.strstart:2,e===J?(vt(t,!0),0===t.strm.avail_out?3:4):t.last_lit&&(vt(t,!1),0===t.strm.avail_out)?1:2},Zt=(t,e)=>{let a,i,n;for(;;){if(t.lookahead<ft){if(Et(t),t.lookahead<ft&&e===X)return 1;if(0===t.lookahead)break}if(a=0,t.lookahead>=3&&(t.ins_h=pt(t,t.ins_h,t.window[t.strstart+3-1]),a=t.prev[t.strstart&t.w_mask]=t.head[t.ins_h],t.head[t.ins_h]=t.strstart),t.prev_length=t.match_length,t.prev_match=t.match_start,t.match_length=2,0!==a&&t.prev_length<t.max_lazy_match&&t.strstart-a<=t.w_size-ft&&(t.match_length=At(t,a),t.match_length<=5&&(t.strategy===nt||3===t.match_length&&t.strstart-t.match_start>4096)&&(t.match_length=2)),t.prev_length>=3&&t.match_length<=t.prev_length){n=t.strstart+t.lookahead-3,i=Y(t,t.strstart-1-t.prev_match,t.prev_length-3),t.lookahead-=t.prev_length-1,t.prev_length-=2;do{++t.strstart<=n&&(t.ins_h=pt(t,t.ins_h,t.window[t.strstart+3-1]),a=t.prev[t.strstart&t.w_mask]=t.head[t.ins_h],t.head[t.ins_h]=t.strstart)}while(0!=--t.prev_length);if(t.match_available=0,t.match_length=2,t.strstart++,i&&(vt(t,!1),0===t.strm.avail_out))return 1}else if(t.match_available){if(i=Y(t,0,t.window[t.strstart-1]),i&&vt(t,!1),t.strstart++,t.lookahead--,0===t.strm.avail_out)return 1}else t.match_available=1,t.strstart++,t.lookahead--}return t.match_available&&(i=Y(t,0,t.window[t.strstart-1]),t.match_available=0),t.insert=t.strstart<2?t.strstart:2,e===J?(vt(t,!0),0===t.strm.avail_out?3:4):t.last_lit&&(vt(t,!1),0===t.strm.avail_out)?1:2};function Ut(t,e,a,i,n){this.good_length=t,this.max_lazy=e,this.nice_length=a,this.max_chain=i,this.func=n}const St=[new Ut(0,0,0,0,((t,e)=>{let a=65535;for(a>t.pending_buf_size-5&&(a=t.pending_buf_size-5);;){if(t.lookahead<=1){if(Et(t),0===t.lookahead&&e===X)return 1;if(0===t.lookahead)break}t.strstart+=t.lookahead,t.lookahead=0;const i=t.block_start+a;if((0===t.strstart||t.strstart>=i)&&(t.lookahead=t.strstart-i,t.strstart=i,vt(t,!1),0===t.strm.avail_out))return 1;if(t.strstart-t.block_start>=t.w_size-ft&&(vt(t,!1),0===t.strm.avail_out))return 1}return t.insert=0,e===J?(vt(t,!0),0===t.strm.avail_out?3:4):(t.strstart>t.block_start&&(vt(t,!1),t.strm.avail_out),1)})),new Ut(4,4,8,4,Rt),new Ut(4,5,16,8,Rt),new Ut(4,6,32,32,Rt),new Ut(4,4,16,16,Zt),new Ut(8,16,32,32,Zt),new Ut(8,16,128,128,Zt),new Ut(8,32,128,256,Zt),new Ut(32,128,258,1024,Zt),new Ut(32,258,258,4096,Zt)];function Dt(){this.strm=null,this.status=0,this.pending_buf=null,this.pending_buf_size=0,this.pending_out=0,this.pending=0,this.wrap=0,this.gzhead=null,this.gzindex=0,this.method=dt,this.last_flush=-1,this.w_size=0,this.w_bits=0,this.w_mask=0,this.window=null,this.window_size=0,this.prev=null,this.head=null,this.ins_h=0,this.hash_size=0,this.hash_bits=0,this.hash_mask=0,this.hash_shift=0,this.block_start=0,this.match_length=0,this.prev_match=0,this.match_available=0,this.strstart=0,this.match_start=0,this.lookahead=0,this.prev_length=0,this.max_chain_length=0,this.max_lazy_match=0,this.level=0,this.strategy=0,this.good_match=0,this.nice_match=0,this.dyn_ltree=new Uint16Array(1146),this.dyn_dtree=new Uint16Array(122),this.bl_tree=new Uint16Array(78),mt(this.dyn_ltree),mt(this.dyn_dtree),mt(this.bl_tree),this.l_desc=null,this.d_desc=null,this.bl_desc=null,this.bl_count=new Uint16Array(16),this.heap=new Uint16Array(573),mt(this.heap),this.heap_len=0,this.heap_max=0,this.depth=new Uint16Array(573),mt(this.depth),this.l_buf=0,this.lit_bufsize=0,this.last_lit=0,this.d_buf=0,this.opt_len=0,this.static_len=0,this.matches=0,this.insert=0,this.bi_buf=0,this.bi_valid=0}const Ot=t=>{if(!t||!t.state)return bt(t,tt);t.total_in=t.total_out=0,t.data_type=ht;const e=t.state;return e.pending=0,e.pending_out=0,e.wrap<0&&(e.wrap=-e.wrap),e.status=e.wrap?42:ut,t.adler=2===e.wrap?0:1,e.last_flush=X,j(e),V},Tt=t=>{const e=Ot(t);var a;return e===V&&((a=t.state).window_size=2*a.w_size,mt(a.head),a.max_lazy_match=St[a.level].max_lazy,a.good_match=St[a.level].good_length,a.nice_match=St[a.level].nice_length,a.max_chain_length=St[a.level].max_chain,a.strstart=0,a.block_start=0,a.lookahead=0,a.insert=0,a.match_length=a.prev_length=2,a.match_available=0,a.ins_h=0),e},Ft=(t,e,a,i,n,s)=>{if(!t)return tt;let r=1;if(e===it&&(e=6),i<0?(r=0,i=-i):i>15&&(r=2,i-=16),n<1||n>9||a!==dt||i<8||i>15||e<0||e>9||s<0||s>lt)return bt(t,tt);8===i&&(i=9);const l=new Dt;return t.state=l,l.strm=t,l.wrap=r,l.gzhead=null,l.w_bits=i,l.w_size=1<<l.w_bits,l.w_mask=l.w_size-1,l.hash_bits=n+7,l.hash_size=1<<l.hash_bits,l.hash_mask=l.hash_size-1,l.hash_shift=~~((l.hash_bits+3-1)/3),l.window=new Uint8Array(2*l.w_size),l.head=new Uint16Array(l.hash_size),l.prev=new Uint16Array(l.w_size),l.lit_bufsize=1<<n+6,l.pending_buf_size=4*l.lit_bufsize,l.pending_buf=new Uint8Array(l.pending_buf_size),l.d_buf=1*l.lit_bufsize,l.l_buf=3*l.lit_bufsize,l.level=e,l.strategy=s,l.method=a,Tt(t)};var It={deflateInit:(t,e)=>Ft(t,e,dt,15,8,ot),deflateInit2:Ft,deflateReset:Tt,deflateResetKeep:Ot,deflateSetHeader:(t,e)=>t&&t.state?2!==t.state.wrap?tt:(t.state.gzhead=e,V):tt,deflate:(t,e)=>{let a,i;if(!t||!t.state||e>Q||e<0)return t?bt(t,tt):tt;const n=t.state;if(!t.output||!t.input&&0!==t.avail_in||n.status===wt&&e!==J)return bt(t,0===t.avail_out?at:tt);n.strm=t;const s=n.last_flush;if(n.last_flush=e,42===n.status)if(2===n.wrap)t.adler=0,yt(n,31),yt(n,139),yt(n,8),n.gzhead?(yt(n,(n.gzhead.text?1:0)+(n.gzhead.hcrc?2:0)+(n.gzhead.extra?4:0)+(n.gzhead.name?8:0)+(n.gzhead.comment?16:0)),yt(n,255&n.gzhead.time),yt(n,n.gzhead.time>>8&255),yt(n,n.gzhead.time>>16&255),yt(n,n.gzhead.time>>24&255),yt(n,9===n.level?2:n.strategy>=st||n.level<2?4:0),yt(n,255&n.gzhead.os),n.gzhead.extra&&n.gzhead.extra.length&&(yt(n,255&n.gzhead.extra.length),yt(n,n.gzhead.extra.length>>8&255)),n.gzhead.hcrc&&(t.adler=C(t.adler,n.pending_buf,n.pending,0)),n.gzindex=0,n.status=69):(yt(n,0),yt(n,0),yt(n,0),yt(n,0),yt(n,0),yt(n,9===n.level?2:n.strategy>=st||n.level<2?4:0),yt(n,3),n.status=ut);else{let e=dt+(n.w_bits-8<<4)<<8,a=-1;a=n.strategy>=st||n.level<2?0:n.level<6?1:6===n.level?2:3,e|=a<<6,0!==n.strstart&&(e|=32),e+=31-e%31,n.status=ut,xt(n,e),0!==n.strstart&&(xt(n,t.adler>>>16),xt(n,65535&t.adler)),t.adler=1}if(69===n.status)if(n.gzhead.extra){for(a=n.pending;n.gzindex<(65535&n.gzhead.extra.length)&&(n.pending!==n.pending_buf_size||(n.gzhead.hcrc&&n.pending>a&&(t.adler=C(t.adler,n.pending_buf,n.pending-a,a)),kt(t),a=n.pending,n.pending!==n.pending_buf_size));)yt(n,255&n.gzhead.extra[n.gzindex]),n.gzindex++;n.gzhead.hcrc&&n.pending>a&&(t.adler=C(t.adler,n.pending_buf,n.pending-a,a)),n.gzindex===n.gzhead.extra.length&&(n.gzindex=0,n.status=73)}else n.status=73;if(73===n.status)if(n.gzhead.name){a=n.pending;do{if(n.pending===n.pending_buf_size&&(n.gzhead.hcrc&&n.pending>a&&(t.adler=C(t.adler,n.pending_buf,n.pending-a,a)),kt(t),a=n.pending,n.pending===n.pending_buf_size)){i=1;break}i=n.gzindex<n.gzhead.name.length?255&n.gzhead.name.charCodeAt(n.gzindex++):0,yt(n,i)}while(0!==i);n.gzhead.hcrc&&n.pending>a&&(t.adler=C(t.adler,n.pending_buf,n.pending-a,a)),0===i&&(n.gzindex=0,n.status=91)}else n.status=91;if(91===n.status)if(n.gzhead.comment){a=n.pending;do{if(n.pending===n.pending_buf_size&&(n.gzhead.hcrc&&n.pending>a&&(t.adler=C(t.adler,n.pending_buf,n.pending-a,a)),kt(t),a=n.pending,n.pending===n.pending_buf_size)){i=1;break}i=n.gzindex<n.gzhead.comment.length?255&n.gzhead.comment.charCodeAt(n.gzindex++):0,yt(n,i)}while(0!==i);n.gzhead.hcrc&&n.pending>a&&(t.adler=C(t.adler,n.pending_buf,n.pending-a,a)),0===i&&(n.status=ct)}else n.status=ct;if(n.status===ct&&(n.gzhead.hcrc?(n.pending+2>n.pending_buf_size&&kt(t),n.pending+2<=n.pending_buf_size&&(yt(n,255&t.adler),yt(n,t.adler>>8&255),t.adler=0,n.status=ut)):n.status=ut),0!==n.pending){if(kt(t),0===t.avail_out)return n.last_flush=-1,V}else if(0===t.avail_in&&gt(e)<=gt(s)&&e!==J)return bt(t,at);if(n.status===wt&&0!==t.avail_in)return bt(t,at);if(0!==t.avail_in||0!==n.lookahead||e!==X&&n.status!==wt){let a=n.strategy===st?((t,e)=>{let a;for(;;){if(0===t.lookahead&&(Et(t),0===t.lookahead)){if(e===X)return 1;break}if(t.match_length=0,a=Y(t,0,t.window[t.strstart]),t.lookahead--,t.strstart++,a&&(vt(t,!1),0===t.strm.avail_out))return 1}return t.insert=0,e===J?(vt(t,!0),0===t.strm.avail_out?3:4):t.last_lit&&(vt(t,!1),0===t.strm.avail_out)?1:2})(n,e):n.strategy===rt?((t,e)=>{let a,i,n,s;const r=t.window;for(;;){if(t.lookahead<=_t){if(Et(t),t.lookahead<=_t&&e===X)return 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e=0;for(;e<144;)t.lens[e++]=8;for(;e<256;)t.lens[e++]=9;for(;e<280;)t.lens[e++]=7;for(;e<288;)t.lens[e++]=8;for(de(1,t.lens,0,288,Se,0,t.work,{bits:9}),e=0;e<32;)t.lens[e++]=5;de(2,t.lens,0,32,De,0,t.work,{bits:5}),Oe=!1}t.lencode=Se,t.lenbits=9,t.distcode=De,t.distbits=5},Fe=(t,e,a,i)=>{let n;const s=t.state;return null===s.window&&(s.wsize=1<<s.wbits,s.wnext=0,s.whave=0,s.window=new Uint8Array(s.wsize)),i>=s.wsize?(s.window.set(e.subarray(a-s.wsize,a),0),s.wnext=0,s.whave=s.wsize):(n=s.wsize-s.wnext,n>i&&(n=i),s.window.set(e.subarray(a-i,a-i+n),s.wnext),(i-=n)?(s.window.set(e.subarray(a-i,a),0),s.wnext=i,s.whave=s.wsize):(s.wnext+=n,s.wnext===s.wsize&&(s.wnext=0),s.whave<s.wsize&&(s.whave+=n))),0};var Ie={inflateReset:Re,inflateReset2:Ze,inflateResetKeep:Ee,inflateInit:t=>Ue(t,15),inflateInit2:Ue,inflate:(t,e)=>{let a,i,n,s,r,l,o,h,d,_,f,c,u,w,b,g,m,p,k,v,y,x,z=0;const A=new Uint8Array(4);let E,R;const Z=new Uint8Array([16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]);if(!t||!t.state||!t.output||!t.input&&0!==t.avail_in)return ge;a=t.state,a.mode===ye&&(a.mode=13),r=t.next_out,n=t.output,o=t.avail_out,s=t.next_in,i=t.input,l=t.avail_in,h=a.hold,d=a.bits,_=l,f=o,x=ue;t:for(;;)switch(a.mode){case 1:if(0===a.wrap){a.mode=13;break}for(;d<16;){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}if(2&a.wrap&&35615===h){a.check=0,A[0]=255&h,A[1]=h>>>8&255,a.check=C(a.check,A,2,0),h=0,d=0,a.mode=2;break}if(a.flags=0,a.head&&(a.head.done=!1),!(1&a.wrap)||(((255&h)<<8)+(h>>8))%31){t.msg="incorrect header check",a.mode=xe;break}if((15&h)!==ve){t.msg="unknown compression method",a.mode=xe;break}if(h>>>=4,d-=4,y=8+(15&h),0===a.wbits)a.wbits=y;else if(y>a.wbits){t.msg="invalid window size",a.mode=xe;break}a.dmax=1<<a.wbits,t.adler=a.check=1,a.mode=512&h?10:ye,h=0,d=0;break;case 2:for(;d<16;){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}if(a.flags=h,(255&a.flags)!==ve){t.msg="unknown compression method",a.mode=xe;break}if(57344&a.flags){t.msg="unknown header flags set",a.mode=xe;break}a.head&&(a.head.text=h>>8&1),512&a.flags&&(A[0]=255&h,A[1]=h>>>8&255,a.check=C(a.check,A,2,0)),h=0,d=0,a.mode=3;case 3:for(;d<32;){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}a.head&&(a.head.time=h),512&a.flags&&(A[0]=255&h,A[1]=h>>>8&255,A[2]=h>>>16&255,A[3]=h>>>24&255,a.check=C(a.check,A,4,0)),h=0,d=0,a.mode=4;case 4:for(;d<16;){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}a.head&&(a.head.xflags=255&h,a.head.os=h>>8),512&a.flags&&(A[0]=255&h,A[1]=h>>>8&255,a.check=C(a.check,A,2,0)),h=0,d=0,a.mode=5;case 5:if(1024&a.flags){for(;d<16;){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}a.length=h,a.head&&(a.head.extra_len=h),512&a.flags&&(A[0]=255&h,A[1]=h>>>8&255,a.check=C(a.check,A,2,0)),h=0,d=0}else a.head&&(a.head.extra=null);a.mode=6;case 6:if(1024&a.flags&&(c=a.length,c>l&&(c=l),c&&(a.head&&(y=a.head.extra_len-a.length,a.head.extra||(a.head.extra=new Uint8Array(a.head.extra_len)),a.head.extra.set(i.subarray(s,s+c),y)),512&a.flags&&(a.check=C(a.check,i,c,s)),l-=c,s+=c,a.length-=c),a.length))break t;a.length=0,a.mode=7;case 7:if(2048&a.flags){if(0===l)break t;c=0;do{y=i[s+c++],a.head&&y&&a.length<65536&&(a.head.name+=String.fromCharCode(y))}while(y&&c<l);if(512&a.flags&&(a.check=C(a.check,i,c,s)),l-=c,s+=c,y)break t}else a.head&&(a.head.name=null);a.length=0,a.mode=8;case 8:if(4096&a.flags){if(0===l)break t;c=0;do{y=i[s+c++],a.head&&y&&a.length<65536&&(a.head.comment+=String.fromCharCode(y))}while(y&&c<l);if(512&a.flags&&(a.check=C(a.check,i,c,s)),l-=c,s+=c,y)break t}else a.head&&(a.head.comment=null);a.mode=9;case 9:if(512&a.flags){for(;d<16;){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}if(h!==(65535&a.check)){t.msg="header crc mismatch",a.mode=xe;break}h=0,d=0}a.head&&(a.head.hcrc=a.flags>>9&1,a.head.done=!0),t.adler=a.check=0,a.mode=ye;break;case 10:for(;d<32;){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}t.adler=a.check=ze(h),h=0,d=0,a.mode=11;case 11:if(0===a.havedict)return t.next_out=r,t.avail_out=o,t.next_in=s,t.avail_in=l,a.hold=h,a.bits=d,be;t.adler=a.check=1,a.mode=ye;case ye:if(e===fe||e===ce)break t;case 13:if(a.last){h>>>=7&d,d-=7&d,a.mode=27;break}for(;d<3;){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}switch(a.last=1&h,h>>>=1,d-=1,3&h){case 0:a.mode=14;break;case 1:if(Te(a),a.mode=20,e===ce){h>>>=2,d-=2;break t}break;case 2:a.mode=17;break;case 3:t.msg="invalid block type",a.mode=xe}h>>>=2,d-=2;break;case 14:for(h>>>=7&d,d-=7&d;d<32;){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}if((65535&h)!=(h>>>16^65535)){t.msg="invalid stored block lengths",a.mode=xe;break}if(a.length=65535&h,h=0,d=0,a.mode=15,e===ce)break t;case 15:a.mode=16;case 16:if(c=a.length,c){if(c>l&&(c=l),c>o&&(c=o),0===c)break t;n.set(i.subarray(s,s+c),r),l-=c,s+=c,o-=c,r+=c,a.length-=c;break}a.mode=ye;break;case 17:for(;d<14;){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}if(a.nlen=257+(31&h),h>>>=5,d-=5,a.ndist=1+(31&h),h>>>=5,d-=5,a.ncode=4+(15&h),h>>>=4,d-=4,a.nlen>286||a.ndist>30){t.msg="too many length or distance symbols",a.mode=xe;break}a.have=0,a.mode=18;case 18:for(;a.have<a.ncode;){for(;d<3;){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}a.lens[Z[a.have++]]=7&h,h>>>=3,d-=3}for(;a.have<19;)a.lens[Z[a.have++]]=0;if(a.lencode=a.lendyn,a.lenbits=7,E={bits:a.lenbits},x=de(0,a.lens,0,19,a.lencode,0,a.work,E),a.lenbits=E.bits,x){t.msg="invalid code lengths set",a.mode=xe;break}a.have=0,a.mode=19;case 19:for(;a.have<a.nlen+a.ndist;){for(;z=a.lencode[h&(1<<a.lenbits)-1],b=z>>>24,g=z>>>16&255,m=65535&z,!(b<=d);){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}if(m<16)h>>>=b,d-=b,a.lens[a.have++]=m;else{if(16===m){for(R=b+2;d<R;){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}if(h>>>=b,d-=b,0===a.have){t.msg="invalid bit length repeat",a.mode=xe;break}y=a.lens[a.have-1],c=3+(3&h),h>>>=2,d-=2}else if(17===m){for(R=b+3;d<R;){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}h>>>=b,d-=b,y=0,c=3+(7&h),h>>>=3,d-=3}else{for(R=b+7;d<R;){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}h>>>=b,d-=b,y=0,c=11+(127&h),h>>>=7,d-=7}if(a.have+c>a.nlen+a.ndist){t.msg="invalid bit length repeat",a.mode=xe;break}for(;c--;)a.lens[a.have++]=y}}if(a.mode===xe)break;if(0===a.lens[256]){t.msg="invalid code -- missing end-of-block",a.mode=xe;break}if(a.lenbits=9,E={bits:a.lenbits},x=de(1,a.lens,0,a.nlen,a.lencode,0,a.work,E),a.lenbits=E.bits,x){t.msg="invalid literal/lengths set",a.mode=xe;break}if(a.distbits=6,a.distcode=a.distdyn,E={bits:a.distbits},x=de(2,a.lens,a.nlen,a.ndist,a.distcode,0,a.work,E),a.distbits=E.bits,x){t.msg="invalid distances set",a.mode=xe;break}if(a.mode=20,e===ce)break t;case 20:a.mode=21;case 21:if(l>=6&&o>=258){t.next_out=r,t.avail_out=o,t.next_in=s,t.avail_in=l,a.hold=h,a.bits=d,ne(t,f),r=t.next_out,n=t.output,o=t.avail_out,s=t.next_in,i=t.input,l=t.avail_in,h=a.hold,d=a.bits,a.mode===ye&&(a.back=-1);break}for(a.back=0;z=a.lencode[h&(1<<a.lenbits)-1],b=z>>>24,g=z>>>16&255,m=65535&z,!(b<=d);){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}if(g&&0==(240&g)){for(p=b,k=g,v=m;z=a.lencode[v+((h&(1<<p+k)-1)>>p)],b=z>>>24,g=z>>>16&255,m=65535&z,!(p+b<=d);){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}h>>>=p,d-=p,a.back+=p}if(h>>>=b,d-=b,a.back+=b,a.length=m,0===g){a.mode=26;break}if(32&g){a.back=-1,a.mode=ye;break}if(64&g){t.msg="invalid literal/length code",a.mode=xe;break}a.extra=15&g,a.mode=22;case 22:if(a.extra){for(R=a.extra;d<R;){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}a.length+=h&(1<<a.extra)-1,h>>>=a.extra,d-=a.extra,a.back+=a.extra}a.was=a.length,a.mode=23;case 23:for(;z=a.distcode[h&(1<<a.distbits)-1],b=z>>>24,g=z>>>16&255,m=65535&z,!(b<=d);){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}if(0==(240&g)){for(p=b,k=g,v=m;z=a.distcode[v+((h&(1<<p+k)-1)>>p)],b=z>>>24,g=z>>>16&255,m=65535&z,!(p+b<=d);){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}h>>>=p,d-=p,a.back+=p}if(h>>>=b,d-=b,a.back+=b,64&g){t.msg="invalid distance code",a.mode=xe;break}a.offset=m,a.extra=15&g,a.mode=24;case 24:if(a.extra){for(R=a.extra;d<R;){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}a.offset+=h&(1<<a.extra)-1,h>>>=a.extra,d-=a.extra,a.back+=a.extra}if(a.offset>a.dmax){t.msg="invalid distance too far back",a.mode=xe;break}a.mode=25;case 25:if(0===o)break t;if(c=f-o,a.offset>c){if(c=a.offset-c,c>a.whave&&a.sane){t.msg="invalid distance too far back",a.mode=xe;break}c>a.wnext?(c-=a.wnext,u=a.wsize-c):u=a.wnext-c,c>a.length&&(c=a.length),w=a.window}else w=n,u=r-a.offset,c=a.length;c>o&&(c=o),o-=c,a.length-=c;do{n[r++]=w[u++]}while(--c);0===a.length&&(a.mode=21);break;case 26:if(0===o)break t;n[r++]=a.length,o--,a.mode=21;break;case 27:if(a.wrap){for(;d<32;){if(0===l)break t;l--,h|=i[s++]<<d,d+=8}if(f-=o,t.total_out+=f,a.total+=f,f&&(t.adler=a.check=a.flags?C(a.check,n,f,r-f):N(a.check,n,f,r-f)),f=o,(a.flags?h:ze(h))!==a.check){t.msg="incorrect data check",a.mode=xe;break}h=0,d=0}a.mode=28;case 28:if(a.wrap&&a.flags){for(;d<32;){if(0===l)break t;l--,h+=i[s++]<<d,d+=8}if(h!==(4294967295&a.total)){t.msg="incorrect length check",a.mode=xe;break}h=0,d=0}a.mode=29;case 29:x=we;break t;case xe:x=me;break t;case 31:return pe;case 32:default:return ge}return t.next_out=r,t.avail_out=o,t.next_in=s,t.avail_in=l,a.hold=h,a.bits=d,(a.wsize||f!==t.avail_out&&a.mode<xe&&(a.mode<27||e!==_e))&&Fe(t,t.output,t.next_out,f-t.avail_out),_-=t.avail_in,f-=t.avail_out,t.total_in+=_,t.total_out+=f,a.total+=f,a.wrap&&f&&(t.adler=a.check=a.flags?C(a.check,n,f,t.next_out-f):N(a.check,n,f,t.next_out-f)),t.data_type=a.bits+(a.last?64:0)+(a.mode===ye?128:0)+(20===a.mode||15===a.mode?256:0),(0===_&&0===f||e===_e)&&x===ue&&(x=ke),x},inflateEnd:t=>{if(!t||!t.state)return ge;let e=t.state;return e.window&&(e.window=null),t.state=null,ue},inflateGetHeader:(t,e)=>{if(!t||!t.state)return ge;const a=t.state;return 0==(2&a.wrap)?ge:(a.head=e,e.done=!1,ue)},inflateSetDictionary:(t,e)=>{const a=e.length;let i,n,s;return t&&t.state?(i=t.state,0!==i.wrap&&11!==i.mode?ge:11===i.mode&&(n=1,n=N(n,e,a,0),n!==i.check)?me:(s=Fe(t,e,a,a),s?(i.mode=31,pe):(i.havedict=1,ue))):ge},inflateInfo:"pako inflate (from Nodeca project)"};var Le=function(){this.text=0,this.time=0,this.xflags=0,this.os=0,this.extra=null,this.extra_len=0,this.name="",this.comment="",this.hcrc=0,this.done=!1};const Ne=Object.prototype.toString,{Z_NO_FLUSH:Be,Z_FINISH:Ce,Z_OK:He,Z_STREAM_END:Me,Z_NEED_DICT:je,Z_STREAM_ERROR:Ke,Z_DATA_ERROR:Pe,Z_MEM_ERROR:Ye}=M;function Ge(t){this.options=Nt({chunkSize:65536,windowBits:15,to:""},t||{});const e=this.options;e.raw&&e.windowBits>=0&&e.windowBits<16&&(e.windowBits=-e.windowBits,0===e.windowBits&&(e.windowBits=-15)),!(e.windowBits>=0&&e.windowBits<16)||t&&t.windowBits||(e.windowBits+=32),e.windowBits>15&&e.windowBits<48&&0==(15&e.windowBits)&&(e.windowBits|=15),this.err=0,this.msg="",this.ended=!1,this.chunks=[],this.strm=new Pt,this.strm.avail_out=0;let a=Ie.inflateInit2(this.strm,e.windowBits);if(a!==He)throw new Error(H[a]);if(this.header=new Le,Ie.inflateGetHeader(this.strm,this.header),e.dictionary&&("string"==typeof e.dictionary?e.dictionary=Mt(e.dictionary):"[object ArrayBuffer]"===Ne.call(e.dictionary)&&(e.dictionary=new Uint8Array(e.dictionary)),e.raw&&(a=Ie.inflateSetDictionary(this.strm,e.dictionary),a!==He)))throw new Error(H[a])}function Xe(t,e){const a=new Ge(e);if(a.push(t),a.err)throw a.msg||H[a.err];return a.result}Ge.prototype.push=function(t,e){const a=this.strm,i=this.options.chunkSize,n=this.options.dictionary;let s,r,l;if(this.ended)return!1;for(r=e===~~e?e:!0===e?Ce:Be,"[object ArrayBuffer]"===Ne.call(t)?a.input=new Uint8Array(t):a.input=t,a.next_in=0,a.avail_in=a.input.length;;){for(0===a.avail_out&&(a.output=new Uint8Array(i),a.next_out=0,a.avail_out=i),s=Ie.inflate(a,r),s===je&&n&&(s=Ie.inflateSetDictionary(a,n),s===He?s=Ie.inflate(a,r):s===Pe&&(s=je));a.avail_in>0&&s===Me&&a.state.wrap>0&&0!==t[a.next_in];)Ie.inflateReset(a),s=Ie.inflate(a,r);switch(s){case Ke:case Pe:case je:case Ye:return this.onEnd(s),this.ended=!0,!1}if(l=a.avail_out,a.next_out&&(0===a.avail_out||s===Me))if("string"===this.options.to){let t=Kt(a.output,a.next_out),e=a.next_out-t,n=jt(a.output,t);a.next_out=e,a.avail_out=i-e,e&&a.output.set(a.output.subarray(t,t+e),0),this.onData(n)}else this.onData(a.output.length===a.next_out?a.output:a.output.subarray(0,a.next_out));if(s!==He||0!==l){if(s===Me)return s=Ie.inflateEnd(this.strm),this.onEnd(s),this.ended=!0,!0;if(0===a.avail_in)break}}return!0},Ge.prototype.onData=function(t){this.chunks.push(t)},Ge.prototype.onEnd=function(t){t===He&&("string"===this.options.to?this.result=this.chunks.join(""):this.result=Bt(this.chunks)),this.chunks=[],this.err=t,this.msg=this.strm.msg};var We={Inflate:Ge,inflate:Xe,inflateRaw:function(t,e){return(e=e||{}).raw=!0,Xe(t,e)},ungzip:Xe,constants:M};const{Deflate:qe,deflate:Je,deflateRaw:Qe,gzip:Ve}=ie,{Inflate:$e,inflate:ta,inflateRaw:ea,ungzip:aa}=We;return{Deflate:qe,deflate:Je,deflateRaw:Qe,gzip:Ve,Inflate:$e,inflate:ta,inflateRaw:ea,ungzip:aa,constants:M}}));

index.js

 // Top level file is just a mixin of submodules & constants
 'use strict';
 
-var assign    = require('./lib/utils/common').assign;
+const { Deflate, deflate, deflateRaw, gzip } = require('./lib/deflate');
 
-var deflate   = require('./lib/deflate');
-var inflate   = require('./lib/inflate');
-var constants = require('./lib/zlib/constants');
+const { Inflate, inflate, inflateRaw, ungzip } = require('./lib/inflate');
 
-var pako = {};
+const constants = require('./lib/zlib/constants');
 
-assign(pako, deflate, inflate, constants);
-
-module.exports = pako;
+module.exports = {
+  Deflate, deflate, deflateRaw, gzip,
+  Inflate, inflate, inflateRaw, ungzip,
+  constants
+};

lib/deflate.js

 'use strict';
 
 
-var zlib_deflate = require('./zlib/deflate');
-var utils        = require('./utils/common');
-var strings      = require('./utils/strings');
-var msg          = require('./zlib/messages');
-var ZStream      = require('./zlib/zstream');
+const zlib_deflate = require('./zlib/deflate');
+const utils        = require('./utils/common');
+const strings      = require('./utils/strings');
+const msg          = require('./zlib/messages');
+const ZStream      = require('./zlib/zstream');
 
-var toString = Object.prototype.toString;
+const toString = Object.prototype.toString;
 
@@ -15,15 +15,10 @@ /* Public constants ==========================================================*/
 
-var Z_NO_FLUSH      = 0;
-var Z_FINISH        = 4;
+const {
+  Z_NO_FLUSH, Z_SYNC_FLUSH, Z_FULL_FLUSH, Z_FINISH,
+  Z_OK, Z_STREAM_END,
+  Z_DEFAULT_COMPRESSION,
+  Z_DEFAULT_STRATEGY,
+  Z_DEFLATED
+} = require('./zlib/constants');
 
-var Z_OK            = 0;
-var Z_STREAM_END    = 1;
-var Z_SYNC_FLUSH    = 2;
-
-var Z_DEFAULT_COMPRESSION = -1;
-
-var Z_DEFAULT_STRATEGY    = 0;
-
-var Z_DEFLATED  = 8;
-
 /* ===========================================================================*/
@@ -47,9 +42,7 @@
 /**
- * Deflate.result -> Uint8Array|Array
+ * Deflate.result -> Uint8Array
  *
  * Compressed result, generated by default [[Deflate#onData]]
  * and [[Deflate#onEnd]] handlers. Filled after you push last chunk
- * (call [[Deflate#push]] with `Z_FINISH` / `true` param)  or if you
- * push a chunk with explicit flush (call [[Deflate#push]] with
- * `Z_SYNC_FLUSH` param).
+ * (call [[Deflate#push]] with `Z_FINISH` / `true` param).
  **/
@@ -94,4 +87,2 @@
  * - `gzip` (Boolean) - create gzip wrapper
- * - `to` (String) - if equal to 'string', then result will be "binary string"
- *    (each char code [0..255])
  * - `header` (Object) - custom header for gzip
@@ -109,7 +100,7 @@ *   - `text` (Boolean) - true if compressed data believed to be text
  * ```javascript
- * var pako = require('pako')
- *   , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9])
- *   , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]);
+ * const pako = require('pako')
+ *   , chunk1 = new Uint8Array([1,2,3,4,5,6,7,8,9])
+ *   , chunk2 = new Uint8Array([10,11,12,13,14,15,16,17,18,19]);
  *
- * var deflate = new pako.Deflate({ level: 3});
+ * const deflate = new pako.Deflate({ level: 3});
  *
@@ -125,4 +116,2 @@ * deflate.push(chunk1, false);
 function Deflate(options) {
-  if (!(this instanceof Deflate)) return new Deflate(options);
-
   this.options = utils.assign({
@@ -134,7 +123,6 @@ level: Z_DEFAULT_COMPRESSION,
     memLevel: 8,
-    strategy: Z_DEFAULT_STRATEGY,
-    to: ''
+    strategy: Z_DEFAULT_STRATEGY
   }, options || {});
 
-  var opt = this.options;
+  let opt = this.options;
 
@@ -157,3 +145,3 @@ if (opt.raw && (opt.windowBits > 0)) {
 
-  var status = zlib_deflate.deflateInit2(
+  let status = zlib_deflate.deflateInit2(
     this.strm,
@@ -176,3 +164,3 @@ opt.level,
   if (opt.dictionary) {
-    var dict;
+    let dict;
     // Convert data if needed
@@ -199,22 +187,15 @@ if (typeof opt.dictionary === 'string') {
 /**
- * Deflate#push(data[, mode]) -> Boolean
- * - data (Uint8Array|Array|ArrayBuffer|String): input data. Strings will be
+ * Deflate#push(data[, flush_mode]) -> Boolean
+ * - data (Uint8Array|ArrayBuffer|String): input data. Strings will be
  *   converted to utf8 byte sequence.
- * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.
+ * - flush_mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.
  *   See constants. Skipped or `false` means Z_NO_FLUSH, `true` means Z_FINISH.
  *
  * Sends input data to deflate pipe, generating [[Deflate#onData]] calls with
- * new compressed chunks. Returns `true` on success. The last data block must have
- * mode Z_FINISH (or `true`). That will flush internal pending buffers and call
- * [[Deflate#onEnd]]. For interim explicit flushes (without ending the stream) you
- * can use mode Z_SYNC_FLUSH, keeping the compression context.
+ * new compressed chunks. Returns `true` on success. The last data block must
+ * have `flush_mode` Z_FINISH (or `true`). That will flush internal pending
+ * buffers and call [[Deflate#onEnd]].
  *
  * On fail call [[Deflate#onEnd]] with error code and return false.
  *
- * We strongly recommend to use `Uint8Array` on input for best speed (output
- * array format is detected automatically). Also, don't skip last param and always
- * use the same type in your code (boolean or number). That will improve JS speed.
- *
- * For regular `Array`-s make sure all elements are [0..255].
- *
  * ##### Example
@@ -228,10 +209,11 @@ *
  **/
-Deflate.prototype.push = function (data, mode) {
-  var strm = this.strm;
-  var chunkSize = this.options.chunkSize;
-  var status, _mode;
+Deflate.prototype.push = function (data, flush_mode) {
+  const strm = this.strm;
+  const chunkSize = this.options.chunkSize;
+  let status, _flush_mode;
 
   if (this.ended) { return false; }
 
-  _mode = (mode === ~~mode) ? mode : ((mode === true) ? Z_FINISH : Z_NO_FLUSH);
+  if (flush_mode === ~~flush_mode) _flush_mode = flush_mode;
+  else _flush_mode = flush_mode === true ? Z_FINISH : Z_NO_FLUSH;
 
@@ -251,37 +233,43 @@ // Convert data if needed
 
-  do {
+  for (;;) {
     if (strm.avail_out === 0) {
-      strm.output = new utils.Buf8(chunkSize);
+      strm.output = new Uint8Array(chunkSize);
       strm.next_out = 0;
       strm.avail_out = chunkSize;
     }
-    status = zlib_deflate.deflate(strm, _mode);    /* no bad return value */
 
-    if (status !== Z_STREAM_END && status !== Z_OK) {
+    // Make sure avail_out > 6 to avoid repeating markers
+    if ((_flush_mode === Z_SYNC_FLUSH || _flush_mode === Z_FULL_FLUSH) && strm.avail_out <= 6) {
+      this.onData(strm.output.subarray(0, strm.next_out));
+      strm.avail_out = 0;
+      continue;
+    }
+
+    status = zlib_deflate.deflate(strm, _flush_mode);
+
+    // Ended => flush and finish
+    if (status === Z_STREAM_END) {
+      if (strm.next_out > 0) {
+        this.onData(strm.output.subarray(0, strm.next_out));
+      }
+      status = zlib_deflate.deflateEnd(this.strm);
       this.onEnd(status);
       this.ended = true;
-      return false;
+      return status === Z_OK;
     }
-    if (strm.avail_out === 0 || (strm.avail_in === 0 && (_mode === Z_FINISH || _mode === Z_SYNC_FLUSH))) {
-      if (this.options.to === 'string') {
-        this.onData(strings.buf2binstring(utils.shrinkBuf(strm.output, strm.next_out)));
-      } else {
-        this.onData(utils.shrinkBuf(strm.output, strm.next_out));
-      }
+
+    // Flush if out buffer full
+    if (strm.avail_out === 0) {
+      this.onData(strm.output);
+      continue;
     }
-  } while ((strm.avail_in > 0 || strm.avail_out === 0) && status !== Z_STREAM_END);
 
-  // Finalize on the last chunk.
-  if (_mode === Z_FINISH) {
-    status = zlib_deflate.deflateEnd(this.strm);
-    this.onEnd(status);
-    this.ended = true;
-    return status === Z_OK;
-  }
+    // Flush if requested and has data
+    if (_flush_mode > 0 && strm.next_out > 0) {
+      this.onData(strm.output.subarray(0, strm.next_out));
+      strm.avail_out = 0;
+      continue;
+    }
 
-  // callback interim results if Z_SYNC_FLUSH.
-  if (_mode === Z_SYNC_FLUSH) {
-    this.onEnd(Z_OK);
-    strm.avail_out = 0;
-    return true;
+    if (strm.avail_in === 0) break;
   }
@@ -295,5 +283,3 @@
  * Deflate#onData(chunk) -> Void
- * - chunk (Uint8Array|Array|String): output data. Type of array depends
- *   on js engine support. When string output requested, each chunk
- *   will be string.
+ * - chunk (Uint8Array): output data.
  *
@@ -314,4 +300,3 @@ * By default, stores data blocks in `chunks[]` property and glue
  * Called once after you tell deflate that the input stream is
- * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH)
- * or if an error happened. By default - join collected chunks,
+ * complete (Z_FINISH). By default - join collected chunks,
  * free memory and fill `results` / `err` properties.
@@ -322,7 +307,3 @@ **/
   if (status === Z_OK) {
-    if (this.options.to === 'string') {
-      this.result = this.chunks.join('');
-    } else {
-      this.result = utils.flattenChunks(this.chunks);
-    }
+    this.result = utils.flattenChunks(this.chunks);
   }
@@ -336,4 +317,4 @@ this.chunks = [];
 /**
- * deflate(data[, options]) -> Uint8Array|Array|String
- * - data (Uint8Array|Array|String): input data to compress.
+ * deflate(data[, options]) -> Uint8Array
+ * - data (Uint8Array|String): input data to compress.
  * - options (Object): zlib deflate options.
@@ -358,4 +339,2 @@ *
  *   negative windowBits implicitly.
- * - `to` (String) - if equal to 'string', then result will be "binary string"
- *    (each char code [0..255])
  *
@@ -365,4 +344,4 @@ * ##### Example:
  * ```javascript
- * var pako = require('pako')
- *   , data = Uint8Array([1,2,3,4,5,6,7,8,9]);
+ * const pako = require('pako')
+ * const data = new Uint8Array([1,2,3,4,5,6,7,8,9]);
  *
@@ -373,3 +352,3 @@ * console.log(pako.deflate(data));
 function deflate(input, options) {
-  var deflator = new Deflate(options);
+  const deflator = new Deflate(options);
 
@@ -386,4 +365,4 @@ deflator.push(input, true);
 /**
- * deflateRaw(data[, options]) -> Uint8Array|Array|String
- * - data (Uint8Array|Array|String): input data to compress.
+ * deflateRaw(data[, options]) -> Uint8Array
+ * - data (Uint8Array|String): input data to compress.
  * - options (Object): zlib deflate options.
@@ -402,4 +381,4 @@ *
 /**
- * gzip(data[, options]) -> Uint8Array|Array|String
- * - data (Uint8Array|Array|String): input data to compress.
+ * gzip(data[, options]) -> Uint8Array
+ * - data (Uint8Array|String): input data to compress.
  * - options (Object): zlib deflate options.
@@ -417,5 +396,8 @@ *
 
-exports.Deflate = Deflate;
-exports.deflate = deflate;
-exports.deflateRaw = deflateRaw;
-exports.gzip = gzip;
+module.exports = {
+  Deflate,
+  deflate,
+  deflateRaw,
+  gzip,
+  constants: require('./zlib/constants')
+};

lib/inflate.js

 'use strict';
 
 
-var zlib_inflate = require('./zlib/inflate');
-var utils        = require('./utils/common');
-var strings      = require('./utils/strings');
-var c            = require('./zlib/constants');
-var msg          = require('./zlib/messages');
-var ZStream      = require('./zlib/zstream');
-var GZheader     = require('./zlib/gzheader');
+const zlib_inflate = require('./zlib/inflate');
+const utils        = require('./utils/common');
+const strings      = require('./utils/strings');
+const msg          = require('./zlib/messages');
+const ZStream      = require('./zlib/zstream');
+const GZheader     = require('./zlib/gzheader');
 
-var toString = Object.prototype.toString;
+const toString = Object.prototype.toString;
 
+/* Public constants ==========================================================*/
+/* ===========================================================================*/
+
+const {
+  Z_NO_FLUSH, Z_FINISH,
+  Z_OK, Z_STREAM_END, Z_NEED_DICT, Z_STREAM_ERROR, Z_DATA_ERROR, Z_MEM_ERROR
+} = require('./zlib/constants');
+
+/* ===========================================================================*/
+
+
 /**
@@ -29,9 +39,7 @@ * class Inflate
 /**
- * Inflate.result -> Uint8Array|Array|String
+ * Inflate.result -> Uint8Array|String
  *
  * Uncompressed result, generated by default [[Inflate#onData]]
  * and [[Inflate#onEnd]] handlers. Filled after you push last chunk
- * (call [[Inflate#push]] with `Z_FINISH` / `true` param) or if you
- * push a chunk with explicit flush (call [[Inflate#push]] with
- * `Z_SYNC_FLUSH` param).
+ * (call [[Inflate#push]] with `Z_FINISH` / `true` param).
  **/
@@ -80,7 +88,7 @@
  * ```javascript
- * var pako = require('pako')
- *   , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9])
- *   , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]);
+ * const pako = require('pako')
+ * const chunk1 = new Uint8Array([1,2,3,4,5,6,7,8,9])
+ * const chunk2 = new Uint8Array([10,11,12,13,14,15,16,17,18,19]);
  *
- * var inflate = new pako.Inflate({ level: 3});
+ * const inflate = new pako.Inflate({ level: 3});
  *
@@ -96,11 +104,9 @@ * inflate.push(chunk1, false);
 function Inflate(options) {
-  if (!(this instanceof Inflate)) return new Inflate(options);
-
   this.options = utils.assign({
-    chunkSize: 16384,
-    windowBits: 0,
+    chunkSize: 1024 * 64,
+    windowBits: 15,
     to: ''
   }, options || {});
 
-  var opt = this.options;
+  const opt = this.options;
 
@@ -138,3 +144,3 @@ // Force window size for `raw` data, if not set directly,
 
-  var status  = zlib_inflate.inflateInit2(
+  let status  = zlib_inflate.inflateInit2(
     this.strm,
@@ -144,3 +150,3 @@ opt.windowBits
 
-  if (status !== c.Z_OK) {
+  if (status !== Z_OK) {
     throw new Error(msg[status]);
@@ -163,3 +169,3 @@ }
       status = zlib_inflate.inflateSetDictionary(this.strm, opt.dictionary);
-      if (status !== c.Z_OK) {
+      if (status !== Z_OK) {
         throw new Error(msg[status]);
@@ -172,21 +178,18 @@ }
 /**
- * Inflate#push(data[, mode]) -> Boolean
- * - data (Uint8Array|Array|ArrayBuffer|String): input data
- * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.
- *   See constants. Skipped or `false` means Z_NO_FLUSH, `true` means Z_FINISH.
+ * Inflate#push(data[, flush_mode]) -> Boolean
+ * - data (Uint8Array|ArrayBuffer): input data
+ * - flush_mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE
+ *   flush modes. See constants. Skipped or `false` means Z_NO_FLUSH,
+ *   `true` means Z_FINISH.
  *
  * Sends input data to inflate pipe, generating [[Inflate#onData]] calls with
- * new output chunks. Returns `true` on success. The last data block must have
- * mode Z_FINISH (or `true`). That will flush internal pending buffers and call
- * [[Inflate#onEnd]]. For interim explicit flushes (without ending the stream) you
- * can use mode Z_SYNC_FLUSH, keeping the decompression context.
+ * new output chunks. Returns `true` on success. If end of stream detected,
+ * [[Inflate#onEnd]] will be called.
  *
+ * `flush_mode` is not needed for normal operation, because end of stream
+ * detected automatically. You may try to use it for advanced things, but
+ * this functionality was not tested.
+ *
  * On fail call [[Inflate#onEnd]] with error code and return false.
  *
- * We strongly recommend to use `Uint8Array` on input for best speed (output
- * format is detected automatically). Also, don't skip last param and always
- * use the same type in your code (boolean or number). That will improve JS speed.
- *
- * For regular `Array`-s make sure all elements are [0..255].
- *
  * ##### Example
@@ -200,21 +203,15 @@ *
  **/
-Inflate.prototype.push = function (data, mode) {
-  var strm = this.strm;
-  var chunkSize = this.options.chunkSize;
-  var dictionary = this.options.dictionary;
-  var status, _mode;
-  var next_out_utf8, tail, utf8str;
+Inflate.prototype.push = function (data, flush_mode) {
+  const strm = this.strm;
+  const chunkSize = this.options.chunkSize;
+  const dictionary = this.options.dictionary;
+  let status, _flush_mode, last_avail_out;
 
-  // Flag to properly process Z_BUF_ERROR on testing inflate call
-  // when we check that all output data was flushed.
-  var allowBufError = false;
+  if (this.ended) return false;
 
-  if (this.ended) { return false; }
-  _mode = (mode === ~~mode) ? mode : ((mode === true) ? c.Z_FINISH : c.Z_NO_FLUSH);
+  if (flush_mode === ~~flush_mode) _flush_mode = flush_mode;
+  else _flush_mode = flush_mode === true ? Z_FINISH : Z_NO_FLUSH;
 
   // Convert data if needed
-  if (typeof data === 'string') {
-    // Only binary strings can be decompressed on practice
-    strm.input = strings.binstring2buf(data);
-  } else if (toString.call(data) === '[object ArrayBuffer]') {
+  if (toString.call(data) === '[object ArrayBuffer]') {
     strm.input = new Uint8Array(data);
@@ -228,5 +225,5 @@ } else {
 
-  do {
+  for (;;) {
     if (strm.avail_out === 0) {
-      strm.output = new utils.Buf8(chunkSize);
+      strm.output = new Uint8Array(chunkSize);
       strm.next_out = 0;
@@ -236,33 +233,53 @@ strm.avail_out = chunkSize;
 
-    status = zlib_inflate.inflate(strm, c.Z_NO_FLUSH);    /* no bad return value */
+    status = zlib_inflate.inflate(strm, _flush_mode);
 
-    if (status === c.Z_NEED_DICT && dictionary) {
-      status = zlib_inflate.inflateSetDictionary(this.strm, dictionary);
+    if (status === Z_NEED_DICT && dictionary) {
+      status = zlib_inflate.inflateSetDictionary(strm, dictionary);
+
+      if (status === Z_OK) {
+        status = zlib_inflate.inflate(strm, _flush_mode);
+      } else if (status === Z_DATA_ERROR) {
+        // Replace code with more verbose
+        status = Z_NEED_DICT;
+      }
     }
 
-    if (status === c.Z_BUF_ERROR && allowBufError === true) {
-      status = c.Z_OK;
-      allowBufError = false;
+    // Skip snyc markers if more data follows and not raw mode
+    while (strm.avail_in > 0 &&
+           status === Z_STREAM_END &&
+           strm.state.wrap > 0 &&
+           data[strm.next_in] !== 0)
+    {
+      zlib_inflate.inflateReset(strm);
+      status = zlib_inflate.inflate(strm, _flush_mode);
     }
 
-    if (status !== c.Z_STREAM_END && status !== c.Z_OK) {
-      this.onEnd(status);
-      this.ended = true;
-      return false;
+    switch (status) {
+      case Z_STREAM_ERROR:
+      case Z_DATA_ERROR:
+      case Z_NEED_DICT:
+      case Z_MEM_ERROR:
+        this.onEnd(status);
+        this.ended = true;
+        return false;
     }
 
+    // Remember real `avail_out` value, because we may patch out buffer content
+    // to align utf8 strings boundaries.
+    last_avail_out = strm.avail_out;
+
     if (strm.next_out) {
-      if (strm.avail_out === 0 || status === c.Z_STREAM_END || (strm.avail_in === 0 && (_mode === c.Z_FINISH || _mode === c.Z_SYNC_FLUSH))) {
+      if (strm.avail_out === 0 || status === Z_STREAM_END) {
 
         if (this.options.to === 'string') {
 
-          next_out_utf8 = strings.utf8border(strm.output, strm.next_out);
+          let next_out_utf8 = strings.utf8border(strm.output, strm.next_out);
 
-          tail = strm.next_out - next_out_utf8;
-          utf8str = strings.buf2string(strm.output, next_out_utf8);
+          let tail = strm.next_out - next_out_utf8;
+          let utf8str = strings.buf2string(strm.output, next_out_utf8);
 
-          // move tail
+          // move tail & realign counters
           strm.next_out = tail;
           strm.avail_out = chunkSize - tail;
-          if (tail) { utils.arraySet(strm.output, strm.output, next_out_utf8, tail, 0); }
+          if (tail) strm.output.set(strm.output.subarray(next_out_utf8, next_out_utf8 + tail), 0);
 
@@ -272,3 +289,3 @@ this.onData(utf8str);
         } else {
-          this.onData(utils.shrinkBuf(strm.output, strm.next_out));
+          this.onData(strm.output.length === strm.next_out ? strm.output : strm.output.subarray(0, strm.next_out));
         }
@@ -278,34 +295,16 @@ }
 
-    // When no more input data, we should check that internal inflate buffers
-    // are flushed. The only way to do it when avail_out = 0 - run one more
-    // inflate pass. But if output data not exists, inflate return Z_BUF_ERROR.
-    // Here we set flag to process this error properly.
-    //
-    // NOTE. Deflate does not return error in this case and does not needs such
-    // logic.
-    if (strm.avail_in === 0 && strm.avail_out === 0) {
-      allowBufError = true;
+    // Must repeat iteration if out buffer is full
+    if (status === Z_OK && last_avail_out === 0) continue;
+
+    // Finalize if end of stream reached.
+    if (status === Z_STREAM_END) {
+      status = zlib_inflate.inflateEnd(this.strm);
+      this.onEnd(status);
+      this.ended = true;
+      return true;
     }
 
-  } while ((strm.avail_in > 0 || strm.avail_out === 0) && status !== c.Z_STREAM_END);
-
-  if (status === c.Z_STREAM_END) {
-    _mode = c.Z_FINISH;
+    if (strm.avail_in === 0) break;
   }
 
-  // Finalize on the last chunk.
-  if (_mode === c.Z_FINISH) {
-    status = zlib_inflate.inflateEnd(this.strm);
-    this.onEnd(status);
-    this.ended = true;
-    return status === c.Z_OK;
-  }
-
-  // callback interim results if Z_SYNC_FLUSH.
-  if (_mode === c.Z_SYNC_FLUSH) {
-    this.onEnd(c.Z_OK);
-    strm.avail_out = 0;
-    return true;
-  }
-
   return true;
@@ -317,5 +316,4 @@ };
  * Inflate#onData(chunk) -> Void
- * - chunk (Uint8Array|Array|String): output data. Type of array depends
- *   on js engine support. When string output requested, each chunk
- *   will be string.
+ * - chunk (Uint8Array|String): output data. When string output requested,
+ *   each chunk will be string.
  *
@@ -336,4 +334,3 @@ * By default, stores data blocks in `chunks[]` property and glue
  * Called either after you tell inflate that the input stream is
- * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH)
- * or if an error happened. By default - join collected chunks,
+ * complete (Z_FINISH). By default - join collected chunks,
  * free memory and fill `results` / `err` properties.
@@ -343,6 +340,4 @@ **/
   // On success - join
-  if (status === c.Z_OK) {
+  if (status === Z_OK) {
     if (this.options.to === 'string') {
-      // Glue & convert here, until we teach pako to send
-      // utf8 aligned strings to onData
       this.result = this.chunks.join('');
@@ -360,4 +355,4 @@ } else {
 /**
- * inflate(data[, options]) -> Uint8Array|Array|String
- * - data (Uint8Array|Array|String): input data to decompress.
+ * inflate(data[, options]) -> Uint8Array|String
+ * - data (Uint8Array): input data to decompress.
  * - options (Object): zlib inflate options.
@@ -388,5 +383,5 @@ *
  * ```javascript
- * var pako = require('pako')
- *   , input = pako.deflate([1,2,3,4,5,6,7,8,9])
- *   , output;
+ * const pako = require('pako');
+ * const input = pako.deflate(new Uint8Array([1,2,3,4,5,6,7,8,9]));
+ * let output;
  *
@@ -401,8 +396,8 @@ * try {
 function inflate(input, options) {
-  var inflator = new Inflate(options);
+  const inflator = new Inflate(options);
 
-  inflator.push(input, true);
+  inflator.push(input);
 
   // That will never happens, if you don't cheat with options :)
-  if (inflator.err) { throw inflator.msg || msg[inflator.err]; }
+  if (inflator.err) throw inflator.msg || msg[inflator.err];
 
@@ -414,4 +409,4 @@ return inflator.result;
 /**
- * inflateRaw(data[, options]) -> Uint8Array|Array|String
- * - data (Uint8Array|Array|String): input data to decompress.
+ * inflateRaw(data[, options]) -> Uint8Array|String
+ * - data (Uint8Array): input data to decompress.
  * - options (Object): zlib inflate options.
@@ -430,4 +425,4 @@ *
 /**
- * ungzip(data[, options]) -> Uint8Array|Array|String
- * - data (Uint8Array|Array|String): input data to decompress.
+ * ungzip(data[, options]) -> Uint8Array|String
+ * - data (Uint8Array): input data to decompress.
  * - options (Object): zlib inflate options.
@@ -440,5 +435,8 @@ *
 
-exports.Inflate = Inflate;
-exports.inflate = inflate;
-exports.inflateRaw = inflateRaw;
-exports.ungzip  = inflate;
+module.exports = {
+  Inflate,
+  inflate,
+  inflateRaw,
+  ungzip: inflate,
+  constants: require('./zlib/constants')
+};

lib/utils/common.js

 'use strict';
 
 
-var TYPED_OK =  (typeof Uint8Array !== 'undefined') &&
-                (typeof Uint16Array !== 'undefined') &&
-                (typeof Int32Array !== 'undefined');
-
-function _has(obj, key) {
+const _has = (obj, key) => {
   return Object.prototype.hasOwnProperty.call(obj, key);
-}
+};
 
-exports.assign = function (obj /*from1, from2, from3, ...*/) {
-  var sources = Array.prototype.slice.call(arguments, 1);
+module.exports.assign = function (obj /*from1, from2, from3, ...*/) {
+  const sources = Array.prototype.slice.call(arguments, 1);
   while (sources.length) {
-    var source = sources.shift();
+    const source = sources.shift();
     if (!source) { continue; }
@@ -22,3 +18,3 @@
 
-    for (var p in source) {
+    for (const p in source) {
       if (_has(source, p)) {
@@ -34,74 +30,21 @@ obj[p] = source[p];
 
-// reduce buffer size, avoiding mem copy
-exports.shrinkBuf = function (buf, size) {
-  if (buf.length === size) { return buf; }
-  if (buf.subarray) { return buf.subarray(0, size); }
-  buf.length = size;
-  return buf;
-};
+// Join array of chunks to single array.
+module.exports.flattenChunks = (chunks) => {
+  // calculate data length
+  let len = 0;
 
+  for (let i = 0, l = chunks.length; i < l; i++) {
+    len += chunks[i].length;
+  }
 
-var fnTyped = {
-  arraySet: function (dest, src, src_offs, len, dest_offs) {
-    if (src.subarray && dest.subarray) {
-      dest.set(src.subarray(src_offs, src_offs + len), dest_offs);
-      return;
-    }
-    // Fallback to ordinary array
-    for (var i = 0; i < len; i++) {
-      dest[dest_offs + i] = src[src_offs + i];
-    }
-  },
-  // Join array of chunks to single array.
-  flattenChunks: function (chunks) {
-    var i, l, len, pos, chunk, result;
+  // join chunks
+  const result = new Uint8Array(len);
 
-    // calculate data length
-    len = 0;
-    for (i = 0, l = chunks.length; i < l; i++) {
-      len += chunks[i].length;
-    }
-
-    // join chunks
-    result = new Uint8Array(len);
-    pos = 0;
-    for (i = 0, l = chunks.length; i < l; i++) {
-      chunk = chunks[i];
-      result.set(chunk, pos);
-      pos += chunk.length;
-    }
-
-    return result;
+  for (let i = 0, pos = 0, l = chunks.length; i < l; i++) {
+    let chunk = chunks[i];
+    result.set(chunk, pos);
+    pos += chunk.length;
   }
-};
 
-var fnUntyped = {
-  arraySet: function (dest, src, src_offs, len, dest_offs) {
-    for (var i = 0; i < len; i++) {
-      dest[dest_offs + i] = src[src_offs + i];
-    }
-  },
-  // Join array of chunks to single array.
-  flattenChunks: function (chunks) {
-    return [].concat.apply([], chunks);
-  }
+  return result;
 };
-
-
-// Enable/Disable typed arrays use, for testing
-//
-exports.setTyped = function (on) {
-  if (on) {
-    exports.Buf8  = Uint8Array;
-    exports.Buf16 = Uint16Array;
-    exports.Buf32 = Int32Array;
-    exports.assign(exports, fnTyped);
-  } else {
-    exports.Buf8  = Array;
-    exports.Buf16 = Array;
-    exports.Buf32 = Array;
-    exports.assign(exports, fnUntyped);
-  }
-};
-
-exports.setTyped(TYPED_OK);

lib/utils/strings.js

@@ -5,5 +5,2 @@ // String encode/decode helpers
 
-var utils = require('./common');
-
-
 // Quick check if we can use fast array to bin string conversion
@@ -14,6 +11,4 @@ //
 //
-var STR_APPLY_OK = true;
-var STR_APPLY_UIA_OK = true;
+let STR_APPLY_UIA_OK = true;
 
-try { String.fromCharCode.apply(null, [ 0 ]); } catch (__) { STR_APPLY_OK = false; }
 try { String.fromCharCode.apply(null, new Uint8Array(1)); } catch (__) { STR_APPLY_UIA_OK = false; }
@@ -25,4 +20,4 @@
 // because max possible codepoint is 0x10ffff
-var _utf8len = new utils.Buf8(256);
-for (var q = 0; q < 256; q++) {
+const _utf8len = new Uint8Array(256);
+for (let q = 0; q < 256; q++) {
   _utf8len[q] = (q >= 252 ? 6 : q >= 248 ? 5 : q >= 240 ? 4 : q >= 224 ? 3 : q >= 192 ? 2 : 1);
@@ -34,4 +29,4 @@ }
 // convert string to array (typed, when possible)
-exports.string2buf = function (str) {
-  var buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;
+module.exports.string2buf = (str) => {
+  let buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;
 
@@ -52,3 +47,3 @@ // count binary size
   // allocate buffer
-  buf = new utils.Buf8(buf_len);
+  buf = new Uint8Array(buf_len);
 
@@ -89,4 +84,4 @@ // convert
 
-// Helper (used in 2 places)
-function buf2binstring(buf, len) {
+// Helper
+const buf2binstring = (buf, len) => {
   // On Chrome, the arguments in a function call that are allowed is `65534`.
@@ -96,35 +91,19 @@ // If the length of the buffer is smaller than that, we can use this optimization,
   if (len < 65534) {
-    if ((buf.subarray && STR_APPLY_UIA_OK) || (!buf.subarray && STR_APPLY_OK)) {
-      return String.fromCharCode.apply(null, utils.shrinkBuf(buf, len));
+    if (buf.subarray && STR_APPLY_UIA_OK) {
+      return String.fromCharCode.apply(null, buf.length === len ? buf : buf.subarray(0, len));
     }
   }
 
-  var result = '';
-  for (var i = 0; i < len; i++) {
+  let result = '';
+  for (let i = 0; i < len; i++) {
     result += String.fromCharCode(buf[i]);
   }
   return result;
-}
-
-
-// Convert byte array to binary string
-exports.buf2binstring = function (buf) {
-  return buf2binstring(buf, buf.length);
 };
 
 
-// Convert binary string (typed, when possible)
-exports.binstring2buf = function (str) {
-  var buf = new utils.Buf8(str.length);
-  for (var i = 0, len = buf.length; i < len; i++) {
-    buf[i] = str.charCodeAt(i);
-  }
-  return buf;
-};
-
-
 // convert array to string
-exports.buf2string = function (buf, max) {
-  var i, out, c, c_len;
-  var len = max || buf.length;
+module.exports.buf2string = (buf, max) => {
+  let i, out;
+  const len = max || buf.length;
 
@@ -134,10 +113,10 @@ // Reserve max possible length (2 words per char)
   //     String.fromCharCode.apply than Uint16Array.
-  var utf16buf = new Array(len * 2);
+  const utf16buf = new Array(len * 2);
 
   for (out = 0, i = 0; i < len;) {
-    c = buf[i++];
+    let c = buf[i++];
     // quick process ascii
     if (c < 0x80) { utf16buf[out++] = c; continue; }
 
-    c_len = _utf8len[c];
+    let c_len = _utf8len[c];
     // skip 5 & 6 byte codes
@@ -176,4 +155,3 @@ if (c_len > 4) { utf16buf[out++] = 0xfffd; i += c_len - 1; continue; }
 // max   - length limit (mandatory);
-exports.utf8border = function (buf, max) {
-  var pos;
+module.exports.utf8border = (buf, max) => {
 
@@ -184,3 +162,3 @@ max = max || buf.length;
   // go back from last position, until start of sequence found
-  pos = max - 1;
+  let pos = max - 1;
   while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; }
@@ -187,0 +165,0 @@

lib/zlib/adler32.js

@@ -26,4 +26,4 @@ 'use strict';
 
-function adler32(adler, buf, len, pos) {
-  var s1 = (adler & 0xffff) |0,
+const adler32 = (adler, buf, len, pos) => {
+  let s1 = (adler & 0xffff) |0,
       s2 = ((adler >>> 16) & 0xffff) |0,
@@ -49,5 +49,5 @@ n = 0;
   return (s1 | (s2 << 16)) |0;
-}
+};
 
 
 module.exports = adler32;

lib/zlib/constants.js

@@ -42,3 +42,3 @@ 'use strict';
   Z_DATA_ERROR:      -3,
-  //Z_MEM_ERROR:     -4,
+  Z_MEM_ERROR:       -4,
   Z_BUF_ERROR:       -5,
@@ -45,0 +45,0 @@ //Z_VERSION_ERROR: -6,

lib/zlib/crc32.js

@@ -27,4 +27,4 @@ 'use strict';
 // Use ordinary array, since untyped makes no boost here
-function makeTable() {
-  var c, table = [];
+const makeTable = () => {
+  let c, table = [];
 
@@ -40,15 +40,15 @@ for (var n = 0; n < 256; n++) {
   return table;
-}
+};
 
 // Create table on load. Just 255 signed longs. Not a problem.
-var crcTable = makeTable();
+const crcTable = new Uint32Array(makeTable());
 
 
-function crc32(crc, buf, len, pos) {
-  var t = crcTable,
-      end = pos + len;
+const crc32 = (crc, buf, len, pos) => {
+  const t = crcTable;
+  const end = pos + len;
 
   crc ^= -1;
 
-  for (var i = pos; i < end; i++) {
+  for (let i = pos; i < end; i++) {
     crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];
@@ -58,5 +58,5 @@ }
   return (crc ^ (-1)); // >>> 0;
-}
+};
 
 
 module.exports = crc32;

lib/zlib/deflate.js

@@ -22,7 +22,6 @@ 'use strict';
 
-var utils   = require('../utils/common');
-var trees   = require('./trees');
-var adler32 = require('./adler32');
-var crc32   = require('./crc32');
-var msg     = require('./messages');
+const { _tr_init, _tr_stored_block, _tr_flush_block, _tr_tally, _tr_align } = require('./trees');
+const adler32 = require('./adler32');
+const crc32   = require('./crc32');
+const msg     = require('./messages');
 
@@ -32,108 +31,78 @@ /* Public constants ==========================================================*/
 
+const {
+  Z_NO_FLUSH, Z_PARTIAL_FLUSH, Z_FULL_FLUSH, Z_FINISH, Z_BLOCK,
+  Z_OK, Z_STREAM_END, Z_STREAM_ERROR, Z_DATA_ERROR, Z_BUF_ERROR,
+  Z_DEFAULT_COMPRESSION,
+  Z_FILTERED, Z_HUFFMAN_ONLY, Z_RLE, Z_FIXED, Z_DEFAULT_STRATEGY,
+  Z_UNKNOWN,
+  Z_DEFLATED
+} = require('./constants');
 
-/* Allowed flush values; see deflate() and inflate() below for details */
-var Z_NO_FLUSH      = 0;
-var Z_PARTIAL_FLUSH = 1;
-//var Z_SYNC_FLUSH    = 2;
-var Z_FULL_FLUSH    = 3;
-var Z_FINISH        = 4;
-var Z_BLOCK         = 5;
-//var Z_TREES         = 6;
-
-
-/* Return codes for the compression/decompression functions. Negative values
- * are errors, positive values are used for special but normal events.
- */
-var Z_OK            = 0;
-var Z_STREAM_END    = 1;
-//var Z_NEED_DICT     = 2;
-//var Z_ERRNO         = -1;
-var Z_STREAM_ERROR  = -2;
-var Z_DATA_ERROR    = -3;
-//var Z_MEM_ERROR     = -4;
-var Z_BUF_ERROR     = -5;
-//var Z_VERSION_ERROR = -6;
-
-
-/* compression levels */
-//var Z_NO_COMPRESSION      = 0;
-//var Z_BEST_SPEED          = 1;
-//var Z_BEST_COMPRESSION    = 9;
-var Z_DEFAULT_COMPRESSION = -1;
-
-
-var Z_FILTERED            = 1;
-var Z_HUFFMAN_ONLY        = 2;
-var Z_RLE                 = 3;
-var Z_FIXED               = 4;
-var Z_DEFAULT_STRATEGY    = 0;
-
-/* Possible values of the data_type field (though see inflate()) */
-//var Z_BINARY              = 0;
-//var Z_TEXT                = 1;
-//var Z_ASCII               = 1; // = Z_TEXT
-var Z_UNKNOWN             = 2;
-
-
-/* The deflate compression method */
-var Z_DEFLATED  = 8;
-
 /*============================================================================*/
 
 
-var MAX_MEM_LEVEL = 9;
+const MAX_MEM_LEVEL = 9;
 /* Maximum value for memLevel in deflateInit2 */
-var MAX_WBITS = 15;
+const MAX_WBITS = 15;
 /* 32K LZ77 window */
-var DEF_MEM_LEVEL = 8;
+const DEF_MEM_LEVEL = 8;
 
 
-var LENGTH_CODES  = 29;
+const LENGTH_CODES  = 29;
 /* number of length codes, not counting the special END_BLOCK code */
-var LITERALS      = 256;
+const LITERALS      = 256;
 /* number of literal bytes 0..255 */
-var L_CODES       = LITERALS + 1 + LENGTH_CODES;
+const L_CODES       = LITERALS + 1 + LENGTH_CODES;
 /* number of Literal or Length codes, including the END_BLOCK code */
-var D_CODES       = 30;
+const D_CODES       = 30;
 /* number of distance codes */
-var BL_CODES      = 19;
+const BL_CODES      = 19;
 /* number of codes used to transfer the bit lengths */
-var HEAP_SIZE     = 2 * L_CODES + 1;
+const HEAP_SIZE     = 2 * L_CODES + 1;
 /* maximum heap size */
-var MAX_BITS  = 15;
+const MAX_BITS  = 15;
 /* All codes must not exceed MAX_BITS bits */
 
-var MIN_MATCH = 3;
-var MAX_MATCH = 258;
-var MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1);
+const MIN_MATCH = 3;
+const MAX_MATCH = 258;
+const MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1);
 
-var PRESET_DICT = 0x20;
+const PRESET_DICT = 0x20;
 
-var INIT_STATE = 42;
-var EXTRA_STATE = 69;
-var NAME_STATE = 73;
-var COMMENT_STATE = 91;
-var HCRC_STATE = 103;
-var BUSY_STATE = 113;
-var FINISH_STATE = 666;
+const INIT_STATE = 42;
+const EXTRA_STATE = 69;
+const NAME_STATE = 73;
+const COMMENT_STATE = 91;
+const HCRC_STATE = 103;
+const BUSY_STATE = 113;
+const FINISH_STATE = 666;
 
-var BS_NEED_MORE      = 1; /* block not completed, need more input or more output */
-var BS_BLOCK_DONE     = 2; /* block flush performed */
-var BS_FINISH_STARTED = 3; /* finish started, need only more output at next deflate */
-var BS_FINISH_DONE    = 4; /* finish done, accept no more input or output */
+const BS_NEED_MORE      = 1; /* block not completed, need more input or more output */
+const BS_BLOCK_DONE     = 2; /* block flush performed */
+const BS_FINISH_STARTED = 3; /* finish started, need only more output at next deflate */
+const BS_FINISH_DONE    = 4; /* finish done, accept no more input or output */
 
-var OS_CODE = 0x03; // Unix :) . Don't detect, use this default.
+const OS_CODE = 0x03; // Unix :) . Don't detect, use this default.
 
-function err(strm, errorCode) {
+const err = (strm, errorCode) => {
   strm.msg = msg[errorCode];
   return errorCode;
-}
+};
 
-function rank(f) {
+const rank = (f) => {
   return ((f) << 1) - ((f) > 4 ? 9 : 0);
-}
+};
 
-function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } }
+const zero = (buf) => {
+  let len = buf.length; while (--len >= 0) { buf[len] = 0; }
+};
 
 
+/* eslint-disable new-cap */
+let HASH_ZLIB = (s, prev, data) => ((prev << s.hash_shift) ^ data) & s.hash_mask;
+// This hash causes less collisions, https://github.com/nodeca/pako/issues/135
+// But breaks binary compatibility
+//let HASH_FAST = (s, prev, data) => ((prev << 8) + (prev >> 8) + (data << 4)) & s.hash_mask;
+let HASH = HASH_ZLIB;
+
 /* =========================================================================
@@ -145,7 +114,7 @@ * Flush as much pending output as possible. All deflate() output goes
  */
-function flush_pending(strm) {
-  var s = strm.state;
+const flush_pending = (strm) => {
+  const s = strm.state;
 
   //_tr_flush_bits(s);
-  var len = s.pending;
+  let len = s.pending;
   if (len > strm.avail_out) {
@@ -156,3 +125,3 @@ len = strm.avail_out;
 
-  utils.arraySet(strm.output, s.pending_buf, s.pending_out, len, strm.next_out);
+  strm.output.set(s.pending_buf.subarray(s.pending_out, s.pending_out + len), strm.next_out);
   strm.next_out += len;
@@ -166,15 +135,15 @@ s.pending_out += len;
   }
-}
+};
 
 
-function flush_block_only(s, last) {
-  trees._tr_flush_block(s, (s.block_start >= 0 ? s.block_start : -1), s.strstart - s.block_start, last);
+const flush_block_only = (s, last) => {
+  _tr_flush_block(s, (s.block_start >= 0 ? s.block_start : -1), s.strstart - s.block_start, last);
   s.block_start = s.strstart;
   flush_pending(s.strm);
-}
+};
 
 
-function put_byte(s, b) {
+const put_byte = (s, b) => {
   s.pending_buf[s.pending++] = b;
-}
+};
 
@@ -187,8 +156,9 @@
  */
-function putShortMSB(s, b) {
-//  put_byte(s, (Byte)(b >> 8));
+const putShortMSB = (s, b) => {
+
+  //  put_byte(s, (Byte)(b >> 8));
 //  put_byte(s, (Byte)(b & 0xff));
   s.pending_buf[s.pending++] = (b >>> 8) & 0xff;
   s.pending_buf[s.pending++] = b & 0xff;
-}
+};
 
@@ -203,5 +173,6 @@
  */
-function read_buf(strm, buf, start, size) {
-  var len = strm.avail_in;
+const read_buf = (strm, buf, start, size) => {
 
+  let len = strm.avail_in;
+
   if (len > size) { len = size; }
@@ -213,3 +184,3 @@ if (len === 0) { return 0; }
   // zmemcpy(buf, strm->next_in, len);
-  utils.arraySet(buf, strm.input, strm.next_in, len, start);
+  buf.set(strm.input.subarray(strm.next_in, strm.next_in + len), start);
   if (strm.state.wrap === 1) {
@@ -227,3 +198,3 @@ strm.adler = adler32(strm.adler, buf, len, start);
   return len;
-}
+};
 
@@ -240,16 +211,17 @@
  */
-function longest_match(s, cur_match) {
-  var chain_length = s.max_chain_length;      /* max hash chain length */
-  var scan = s.strstart; /* current string */
-  var match;                       /* matched string */
-  var len;                           /* length of current match */
-  var best_len = s.prev_length;              /* best match length so far */
-  var nice_match = s.nice_match;             /* stop if match long enough */
-  var limit = (s.strstart > (s.w_size - MIN_LOOKAHEAD)) ?
+const longest_match = (s, cur_match) => {
+
+  let chain_length = s.max_chain_length;      /* max hash chain length */
+  let scan = s.strstart; /* current string */
+  let match;                       /* matched string */
+  let len;                           /* length of current match */
+  let best_len = s.prev_length;              /* best match length so far */
+  let nice_match = s.nice_match;             /* stop if match long enough */
+  const limit = (s.strstart > (s.w_size - MIN_LOOKAHEAD)) ?
       s.strstart - (s.w_size - MIN_LOOKAHEAD) : 0/*NIL*/;
 
-  var _win = s.window; // shortcut
+  const _win = s.window; // shortcut
 
-  var wmask = s.w_mask;
-  var prev  = s.prev;
+  const wmask = s.w_mask;
+  const prev  = s.prev;
 
@@ -260,5 +232,5 @@ /* Stop when cur_match becomes <= limit. To simplify the code,
 
-  var strend = s.strstart + MAX_MATCH;
-  var scan_end1  = _win[scan + best_len - 1];
-  var scan_end   = _win[scan + best_len];
+  const strend = s.strstart + MAX_MATCH;
+  let scan_end1  = _win[scan + best_len - 1];
+  let scan_end   = _win[scan + best_len];
 
@@ -342,3 +314,3 @@ /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
   return s.lookahead;
-}
+};
 
@@ -356,6 +328,7 @@
  */
-function fill_window(s) {
-  var _w_size = s.w_size;
-  var p, n, m, more, str;
+const fill_window = (s) => {
 
+  const _w_size = s.w_size;
+  let p, n, m, more, str;
+
   //Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead");
@@ -386,3 +359,3 @@
 
-      utils.arraySet(s.window, s.window, _w_size, _w_size, 0);
+      s.window.set(s.window.subarray(_w_size, _w_size + _w_size), 0);
       s.match_start -= _w_size;
@@ -402,2 +375,3 @@ s.strstart -= _w_size;
       p = n;
+
       do {
@@ -410,2 +384,3 @@ m = s.head[--p];
       p = n;
+
       do {
@@ -446,3 +421,3 @@ m = s.prev[--p];
       /* UPDATE_HASH(s, s->ins_h, s->window[str + 1]); */
-      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + 1]) & s.hash_mask;
+      s.ins_h = HASH(s, s.ins_h, s.window[str + 1]);
 //#if MIN_MATCH != 3
@@ -453,3 +428,3 @@ //        Call update_hash() MIN_MATCH-3 more times
         /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */
-        s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH - 1]) & s.hash_mask;
+        s.ins_h = HASH(s, s.ins_h, s.window[str + MIN_MATCH - 1]);
 
@@ -479,4 +454,4 @@ s.prev[str & s.w_mask] = s.head[s.ins_h];
 //  if (s.high_water < s.window_size) {
-//    var curr = s.strstart + s.lookahead;
-//    var init = 0;
+//    const curr = s.strstart + s.lookahead;
+//    let init = 0;
 //
@@ -508,3 +483,3 @@ //    if (s.high_water < curr) {
 //    "not enough room for search");
-}
+};
 
@@ -520,7 +495,8 @@ /* ===========================================================================
  */
-function deflate_stored(s, flush) {
+const deflate_stored = (s, flush) => {
+
   /* Stored blocks are limited to 0xffff bytes, pending_buf is limited
    * to pending_buf_size, and each stored block has a 5 byte header:
    */
-  var max_block_size = 0xffff;
+  let max_block_size = 0xffff;
 
@@ -560,3 +536,3 @@ if (max_block_size > s.pending_buf_size - 5) {
     /* Emit a stored block if pending_buf will be full: */
-    var max_start = s.block_start + max_block_size;
+    const max_start = s.block_start + max_block_size;
 
@@ -611,3 +587,3 @@ if (s.strstart === 0 || s.strstart >= max_start) {
   return BS_NEED_MORE;
-}
+};
 
@@ -621,6 +597,7 @@ /* ===========================================================================
  */
-function deflate_fast(s, flush) {
-  var hash_head;        /* head of the hash chain */
-  var bflush;           /* set if current block must be flushed */
+const deflate_fast = (s, flush) => {
 
+  let hash_head;        /* head of the hash chain */
+  let bflush;           /* set if current block must be flushed */
+
   for (;;) {
@@ -648,3 +625,3 @@ /* Make sure that we always have enough lookahead, except
       /*** INSERT_STRING(s, s.strstart, hash_head); ***/
-      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
+      s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + MIN_MATCH - 1]);
       hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
@@ -671,3 +648,3 @@ s.head[s.ins_h] = s.strstart;
                      s.match_length - MIN_MATCH, bflush); ***/
-      bflush = trees._tr_tally(s, s.strstart - s.match_start, s.match_length - MIN_MATCH);
+      bflush = _tr_tally(s, s.strstart - s.match_start, s.match_length - MIN_MATCH);
 
@@ -684,3 +661,3 @@ s.lookahead -= s.match_length;
           /*** INSERT_STRING(s, s.strstart, hash_head); ***/
-          s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
+          s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + MIN_MATCH - 1]);
           hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
@@ -700,3 +677,3 @@ s.head[s.ins_h] = s.strstart;
         /* UPDATE_HASH(s, s.ins_h, s.window[s.strstart+1]); */
-        s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + 1]) & s.hash_mask;
+        s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + 1]);
 
@@ -714,3 +691,3 @@ //#if MIN_MATCH != 3
       /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
-      bflush = trees._tr_tally(s, 0, s.window[s.strstart]);
+      bflush = _tr_tally(s, 0, s.window[s.strstart]);
 
@@ -748,3 +725,3 @@ s.lookahead--;
   return BS_BLOCK_DONE;
-}
+};
 
@@ -756,8 +733,9 @@ /* ===========================================================================
  */
-function deflate_slow(s, flush) {
-  var hash_head;          /* head of hash chain */
-  var bflush;              /* set if current block must be flushed */
+const deflate_slow = (s, flush) => {
 
-  var max_insert;
+  let hash_head;          /* head of hash chain */
+  let bflush;              /* set if current block must be flushed */
 
+  let max_insert;
+
   /* Process the input block. */
@@ -784,3 +762,3 @@ for (;;) {
       /*** INSERT_STRING(s, s.strstart, hash_head); ***/
-      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
+      s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + MIN_MATCH - 1]);
       hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
@@ -826,3 +804,3 @@ s.head[s.ins_h] = s.strstart;
                      s.prev_length - MIN_MATCH, bflush);***/
-      bflush = trees._tr_tally(s, s.strstart - 1 - s.prev_match, s.prev_length - MIN_MATCH);
+      bflush = _tr_tally(s, s.strstart - 1 - s.prev_match, s.prev_length - MIN_MATCH);
       /* Insert in hash table all strings up to the end of the match.
@@ -838,3 +816,3 @@ * strstart-1 and strstart are already inserted. If there is not
           /*** INSERT_STRING(s, s.strstart, hash_head); ***/
-          s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
+          s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + MIN_MATCH - 1]);
           hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
@@ -865,3 +843,3 @@ s.head[s.ins_h] = s.strstart;
       /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/
-      bflush = trees._tr_tally(s, 0, s.window[s.strstart - 1]);
+      bflush = _tr_tally(s, 0, s.window[s.strstart - 1]);
 
@@ -891,3 +869,3 @@ if (bflush) {
     /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/
-    bflush = trees._tr_tally(s, 0, s.window[s.strstart - 1]);
+    bflush = _tr_tally(s, 0, s.window[s.strstart - 1]);
 
@@ -916,3 +894,3 @@ s.match_available = 0;
   return BS_BLOCK_DONE;
-}
+};
 
@@ -925,9 +903,10 @@
  */
-function deflate_rle(s, flush) {
-  var bflush;            /* set if current block must be flushed */
-  var prev;              /* byte at distance one to match */
-  var scan, strend;      /* scan goes up to strend for length of run */
+const deflate_rle = (s, flush) => {
 
-  var _win = s.window;
+  let bflush;            /* set if current block must be flushed */
+  let prev;              /* byte at distance one to match */
+  let scan, strend;      /* scan goes up to strend for length of run */
 
+  const _win = s.window;
+
   for (;;) {
@@ -973,3 +952,3 @@ /* Make sure that we always have enough lookahead, except
       /*** _tr_tally_dist(s, 1, s.match_length - MIN_MATCH, bflush); ***/
-      bflush = trees._tr_tally(s, 1, s.match_length - MIN_MATCH);
+      bflush = _tr_tally(s, 1, s.match_length - MIN_MATCH);
 
@@ -983,3 +962,3 @@ s.lookahead -= s.match_length;
       /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
-      bflush = trees._tr_tally(s, 0, s.window[s.strstart]);
+      bflush = _tr_tally(s, 0, s.window[s.strstart]);
 
@@ -1017,3 +996,3 @@ s.lookahead--;
   return BS_BLOCK_DONE;
-}
+};
 
@@ -1024,5 +1003,6 @@ /* ===========================================================================
  */
-function deflate_huff(s, flush) {
-  var bflush;             /* set if current block must be flushed */
+const deflate_huff = (s, flush) => {
 
+  let bflush;             /* set if current block must be flushed */
+
   for (;;) {
@@ -1044,3 +1024,3 @@ /* Make sure that we have a literal to write. */
     /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
-    bflush = trees._tr_tally(s, 0, s.window[s.strstart]);
+    bflush = _tr_tally(s, 0, s.window[s.strstart]);
     s.lookahead--;
@@ -1076,3 +1056,3 @@ s.strstart++;
   return BS_BLOCK_DONE;
-}
+};
 
@@ -1085,2 +1065,3 @@ /* Values for max_lazy_match, good_match and max_chain_length, depending on
 function Config(good_length, max_lazy, nice_length, max_chain, func) {
+
   this.good_length = good_length;
@@ -1093,5 +1074,3 @@ this.max_lazy = max_lazy;
 
-var configuration_table;
-
-configuration_table = [
+const configuration_table = [
   /*      good lazy nice chain */
@@ -1115,3 +1094,4 @@ new Config(0, 0, 0, 0, deflate_stored),          /* 0 store only */
  */
-function lm_init(s) {
+const lm_init = (s) => {
+
   s.window_size = 2 * s.w_size;
@@ -1136,3 +1116,3 @@
   s.ins_h = 0;
-}
+};
 
@@ -1243,5 +1223,5 @@
   // because JS does not support effective
-  this.dyn_ltree  = new utils.Buf16(HEAP_SIZE * 2);
-  this.dyn_dtree  = new utils.Buf16((2 * D_CODES + 1) * 2);
-  this.bl_tree    = new utils.Buf16((2 * BL_CODES + 1) * 2);
+  this.dyn_ltree  = new Uint16Array(HEAP_SIZE * 2);
+  this.dyn_dtree  = new Uint16Array((2 * D_CODES + 1) * 2);
+  this.bl_tree    = new Uint16Array((2 * BL_CODES + 1) * 2);
   zero(this.dyn_ltree);
@@ -1256,7 +1236,7 @@ zero(this.dyn_dtree);
   //ush bl_count[MAX_BITS+1];
-  this.bl_count = new utils.Buf16(MAX_BITS + 1);
+  this.bl_count = new Uint16Array(MAX_BITS + 1);
   /* number of codes at each bit length for an optimal tree */
 
   //int heap[2*L_CODES+1];      /* heap used to build the Huffman trees */
-  this.heap = new utils.Buf16(2 * L_CODES + 1);  /* heap used to build the Huffman trees */
+  this.heap = new Uint16Array(2 * L_CODES + 1);  /* heap used to build the Huffman trees */
   zero(this.heap);
@@ -1270,3 +1250,3 @@
 
-  this.depth = new utils.Buf16(2 * L_CODES + 1); //uch depth[2*L_CODES+1];
+  this.depth = new Uint16Array(2 * L_CODES + 1); //uch depth[2*L_CODES+1];
   zero(this.depth);
@@ -1332,4 +1312,3 @@ /* Depth of each subtree used as tie breaker for trees of equal frequency
 
-function deflateResetKeep(strm) {
-  var s;
+const deflateResetKeep = (strm) => {
 
@@ -1343,3 +1322,3 @@ if (!strm || !strm.state) {
 
-  s = strm.state;
+  const s = strm.state;
   s.pending = 0;
@@ -1358,9 +1337,10 @@ s.pending_out = 0;
   s.last_flush = Z_NO_FLUSH;
-  trees._tr_init(s);
+  _tr_init(s);
   return Z_OK;
-}
+};
 
 
-function deflateReset(strm) {
-  var ret = deflateResetKeep(strm);
+const deflateReset = (strm) => {
+
+  const ret = deflateResetKeep(strm);
   if (ret === Z_OK) {
@@ -1370,6 +1350,7 @@ lm_init(strm.state);
   return ret;
-}
+};
 
 
-function deflateSetHeader(strm, head) {
+const deflateSetHeader = (strm, head) => {
+
   if (!strm || !strm.state) { return Z_STREAM_ERROR; }
@@ -1379,10 +1360,11 @@ if (strm.state.wrap !== 2) { return Z_STREAM_ERROR; }
   return Z_OK;
-}
+};
 
 
-function deflateInit2(strm, level, method, windowBits, memLevel, strategy) {
+const deflateInit2 = (strm, level, method, windowBits, memLevel, strategy) => {
+
   if (!strm) { // === Z_NULL
     return Z_STREAM_ERROR;
   }
-  var wrap = 1;
+  let wrap = 1;
 
@@ -1416,3 +1398,3 @@ if (level === Z_DEFAULT_COMPRESSION) {
 
-  var s = new DeflateState();
+  const s = new DeflateState();
 
@@ -1433,5 +1415,5 @@ strm.state = s;
 
-  s.window = new utils.Buf8(s.w_size * 2);
-  s.head = new utils.Buf16(s.hash_size);
-  s.prev = new utils.Buf16(s.w_size);
+  s.window = new Uint8Array(s.w_size * 2);
+  s.head = new Uint16Array(s.hash_size);
+  s.prev = new Uint16Array(s.w_size);
 
@@ -1447,3 +1429,3 @@ // Don't need mem init magic for JS.
   //s->pending_buf = (uchf *) overlay;
-  s.pending_buf = new utils.Buf8(s.pending_buf_size);
+  s.pending_buf = new Uint8Array(s.pending_buf_size);
 
@@ -1462,13 +1444,14 @@ // It is offset from `s.pending_buf` (size is `s.lit_bufsize * 2`)
   return deflateReset(strm);
-}
+};
 
-function deflateInit(strm, level) {
+const deflateInit = (strm, level) => {
+
   return deflateInit2(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY);
-}
+};
 
 
-function deflate(strm, flush) {
-  var old_flush, s;
-  var beg, val; // for gzip header write only
+const deflate = (strm, flush) => {
 
+  let beg, val; // for gzip header write only
+
   if (!strm || !strm.state ||
@@ -1479,3 +1462,3 @@ flush > Z_BLOCK || flush < 0) {
 
-  s = strm.state;
+  const s = strm.state;
 
@@ -1489,3 +1472,3 @@ if (!strm.output ||
   s.strm = strm; /* just in case */
-  old_flush = s.last_flush;
+  const old_flush = s.last_flush;
   s.last_flush = flush;
@@ -1541,4 +1524,4 @@
     {
-      var header = (Z_DEFLATED + ((s.w_bits - 8) << 4)) << 8;
-      var level_flags = -1;
+      let header = (Z_DEFLATED + ((s.w_bits - 8) << 4)) << 8;
+      let level_flags = -1;
 
@@ -1726,3 +1709,3 @@ if (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2) {
     (flush !== Z_NO_FLUSH && s.status !== FINISH_STATE)) {
-    var bstate = (s.strategy === Z_HUFFMAN_ONLY) ? deflate_huff(s, flush) :
+    let bstate = (s.strategy === Z_HUFFMAN_ONLY) ? deflate_huff(s, flush) :
       (s.strategy === Z_RLE ? deflate_rle(s, flush) :
@@ -1750,7 +1733,7 @@ configuration_table[s.level].func(s, flush));
       if (flush === Z_PARTIAL_FLUSH) {
-        trees._tr_align(s);
+        _tr_align(s);
       }
       else if (flush !== Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */
 
-        trees._tr_stored_block(s, 0, 0, false);
+        _tr_stored_block(s, 0, 0, false);
         /* For a full flush, this empty block will be recognized
@@ -1807,7 +1790,7 @@ * as a special marker by inflate_sync().
   return s.pending !== 0 ? Z_OK : Z_STREAM_END;
-}
+};
 
-function deflateEnd(strm) {
-  var status;
 
+const deflateEnd = (strm) => {
+
   if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) {
@@ -1817,3 +1800,3 @@ return Z_STREAM_ERROR;
 
-  status = strm.state.status;
+  const status = strm.state.status;
   if (status !== INIT_STATE &&
@@ -1833,3 +1816,3 @@ status !== EXTRA_STATE &&
   return status === BUSY_STATE ? err(strm, Z_DATA_ERROR) : Z_OK;
-}
+};
 
@@ -1841,12 +1824,5 @@
  */
-function deflateSetDictionary(strm, dictionary) {
-  var dictLength = dictionary.length;
+const deflateSetDictionary = (strm, dictionary) => {
 
-  var s;
-  var str, n;
-  var wrap;
-  var avail;
-  var next;
-  var input;
-  var tmpDict;
+  let dictLength = dictionary.length;
 
@@ -1857,4 +1833,4 @@ if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) {
 
-  s = strm.state;
-  wrap = s.wrap;
+  const s = strm.state;
+  const wrap = s.wrap;
 
@@ -1884,4 +1860,4 @@ if (wrap === 2 || (wrap === 1 && s.status !== INIT_STATE) || s.lookahead) {
     // dictionary = dictionary.slice(dictLength - s.w_size);
-    tmpDict = new utils.Buf8(s.w_size);
-    utils.arraySet(tmpDict, dictionary, dictLength - s.w_size, s.w_size, 0);
+    let tmpDict = new Uint8Array(s.w_size);
+    tmpDict.set(dictionary.subarray(dictLength - s.w_size, dictLength), 0);
     dictionary = tmpDict;
@@ -1891,5 +1867,5 @@ dictLength = s.w_size;
   /* insert dictionary into window and hash */
-  avail = strm.avail_in;
-  next = strm.next_in;
-  input = strm.input;
+  const avail = strm.avail_in;
+  const next = strm.next_in;
+  const input = strm.input;
   strm.avail_in = dictLength;
@@ -1900,7 +1876,7 @@ strm.next_in = 0;
   while (s.lookahead >= MIN_MATCH) {
-    str = s.strstart;
-    n = s.lookahead - (MIN_MATCH - 1);
+    let str = s.strstart;
+    let n = s.lookahead - (MIN_MATCH - 1);
     do {
       /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */
-      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH - 1]) & s.hash_mask;
+      s.ins_h = HASH(s, s.ins_h, s.window[str + MIN_MATCH - 1]);
 
@@ -1927,3 +1903,3 @@ s.prev[str & s.w_mask] = s.head[s.ins_h];
   return Z_OK;
-}
+};
 
@@ -1930,0 +1906,0 @@

lib/zlib/inffast.js

@@ -23,4 +23,4 @@ 'use strict';
 // See state defs from inflate.js
-var BAD = 30;       /* got a data error -- remain here until reset */
-var TYPE = 12;      /* i: waiting for type bits, including last-flag bit */
+const BAD = 30;       /* got a data error -- remain here until reset */
+const TYPE = 12;      /* i: waiting for type bits, including last-flag bit */
 
@@ -63,35 +63,34 @@ /*
 module.exports = function inflate_fast(strm, start) {
-  var state;
-  var _in;                    /* local strm.input */
-  var last;                   /* have enough input while in < last */
-  var _out;                   /* local strm.output */
-  var beg;                    /* inflate()'s initial strm.output */
-  var end;                    /* while out < end, enough space available */
+  let _in;                    /* local strm.input */
+  let last;                   /* have enough input while in < last */
+  let _out;                   /* local strm.output */
+  let beg;                    /* inflate()'s initial strm.output */
+  let end;                    /* while out < end, enough space available */
 //#ifdef INFLATE_STRICT
-  var dmax;                   /* maximum distance from zlib header */
+  let dmax;                   /* maximum distance from zlib header */
 //#endif
-  var wsize;                  /* window size or zero if not using window */
-  var whave;                  /* valid bytes in the window */
-  var wnext;                  /* window write index */
+  let wsize;                  /* window size or zero if not using window */
+  let whave;                  /* valid bytes in the window */
+  let wnext;                  /* window write index */
   // Use `s_window` instead `window`, avoid conflict with instrumentation tools
-  var s_window;               /* allocated sliding window, if wsize != 0 */
-  var hold;                   /* local strm.hold */
-  var bits;                   /* local strm.bits */
-  var lcode;                  /* local strm.lencode */
-  var dcode;                  /* local strm.distcode */
-  var lmask;                  /* mask for first level of length codes */
-  var dmask;                  /* mask for first level of distance codes */
-  var here;                   /* retrieved table entry */
-  var op;                     /* code bits, operation, extra bits, or */
+  let s_window;               /* allocated sliding window, if wsize != 0 */
+  let hold;                   /* local strm.hold */
+  let bits;                   /* local strm.bits */
+  let lcode;                  /* local strm.lencode */
+  let dcode;                  /* local strm.distcode */
+  let lmask;                  /* mask for first level of length codes */
+  let dmask;                  /* mask for first level of distance codes */
+  let here;                   /* retrieved table entry */
+  let op;                     /* code bits, operation, extra bits, or */
                               /*  window position, window bytes to copy */
-  var len;                    /* match length, unused bytes */
-  var dist;                   /* match distance */
-  var from;                   /* where to copy match from */
-  var from_source;
+  let len;                    /* match length, unused bytes */
+  let dist;                   /* match distance */
+  let from;                   /* where to copy match from */
+  let from_source;
 
 
-  var input, output; // JS specific, because we have no pointers
+  let input, output; // JS specific, because we have no pointers
 
   /* copy state to local variables */
-  state = strm.state;
+  const state = strm.state;
   //here = state.here;
@@ -98,0 +97,0 @@ _in = strm.next_in;

lib/zlib/inflate.js

@@ -22,11 +22,10 @@ 'use strict';
 
-var utils         = require('../utils/common');
-var adler32       = require('./adler32');
-var crc32         = require('./crc32');
-var inflate_fast  = require('./inffast');
-var inflate_table = require('./inftrees');
+const adler32       = require('./adler32');
+const crc32         = require('./crc32');
+const inflate_fast  = require('./inffast');
+const inflate_table = require('./inftrees');
 
-var CODES = 0;
-var LENS = 1;
-var DISTS = 2;
+const CODES = 0;
+const LENS = 1;
+const DISTS = 2;
 
@@ -36,30 +35,9 @@ /* Public constants ==========================================================*/
 
+const {
+  Z_FINISH, Z_BLOCK, Z_TREES,
+  Z_OK, Z_STREAM_END, Z_NEED_DICT, Z_STREAM_ERROR, Z_DATA_ERROR, Z_MEM_ERROR, Z_BUF_ERROR,
+  Z_DEFLATED
+} = require('./constants');
 
-/* Allowed flush values; see deflate() and inflate() below for details */
-//var Z_NO_FLUSH      = 0;
-//var Z_PARTIAL_FLUSH = 1;
-//var Z_SYNC_FLUSH    = 2;
-//var Z_FULL_FLUSH    = 3;
-var Z_FINISH        = 4;
-var Z_BLOCK         = 5;
-var Z_TREES         = 6;
 
-
-/* Return codes for the compression/decompression functions. Negative values
- * are errors, positive values are used for special but normal events.
- */
-var Z_OK            = 0;
-var Z_STREAM_END    = 1;
-var Z_NEED_DICT     = 2;
-//var Z_ERRNO         = -1;
-var Z_STREAM_ERROR  = -2;
-var Z_DATA_ERROR    = -3;
-var Z_MEM_ERROR     = -4;
-var Z_BUF_ERROR     = -5;
-//var Z_VERSION_ERROR = -6;
-
-/* The deflate compression method */
-var Z_DEFLATED  = 8;
-
-
 /* STATES ====================================================================*/
@@ -69,34 +47,34 @@ /* ===========================================================================*/
 
-var    HEAD = 1;       /* i: waiting for magic header */
-var    FLAGS = 2;      /* i: waiting for method and flags (gzip) */
-var    TIME = 3;       /* i: waiting for modification time (gzip) */
-var    OS = 4;         /* i: waiting for extra flags and operating system (gzip) */
-var    EXLEN = 5;      /* i: waiting for extra length (gzip) */
-var    EXTRA = 6;      /* i: waiting for extra bytes (gzip) */
-var    NAME = 7;       /* i: waiting for end of file name (gzip) */
-var    COMMENT = 8;    /* i: waiting for end of comment (gzip) */
-var    HCRC = 9;       /* i: waiting for header crc (gzip) */
-var    DICTID = 10;    /* i: waiting for dictionary check value */
-var    DICT = 11;      /* waiting for inflateSetDictionary() call */
-var        TYPE = 12;      /* i: waiting for type bits, including last-flag bit */
-var        TYPEDO = 13;    /* i: same, but skip check to exit inflate on new block */
-var        STORED = 14;    /* i: waiting for stored size (length and complement) */
-var        COPY_ = 15;     /* i/o: same as COPY below, but only first time in */
-var        COPY = 16;      /* i/o: waiting for input or output to copy stored block */
-var        TABLE = 17;     /* i: waiting for dynamic block table lengths */
-var        LENLENS = 18;   /* i: waiting for code length code lengths */
-var        CODELENS = 19;  /* i: waiting for length/lit and distance code lengths */
-var            LEN_ = 20;      /* i: same as LEN below, but only first time in */
-var            LEN = 21;       /* i: waiting for length/lit/eob code */
-var            LENEXT = 22;    /* i: waiting for length extra bits */
-var            DIST = 23;      /* i: waiting for distance code */
-var            DISTEXT = 24;   /* i: waiting for distance extra bits */
-var            MATCH = 25;     /* o: waiting for output space to copy string */
-var            LIT = 26;       /* o: waiting for output space to write literal */
-var    CHECK = 27;     /* i: waiting for 32-bit check value */
-var    LENGTH = 28;    /* i: waiting for 32-bit length (gzip) */
-var    DONE = 29;      /* finished check, done -- remain here until reset */
-var    BAD = 30;       /* got a data error -- remain here until reset */
-var    MEM = 31;       /* got an inflate() memory error -- remain here until reset */
-var    SYNC = 32;      /* looking for synchronization bytes to restart inflate() */
+const    HEAD = 1;       /* i: waiting for magic header */
+const    FLAGS = 2;      /* i: waiting for method and flags (gzip) */
+const    TIME = 3;       /* i: waiting for modification time (gzip) */
+const    OS = 4;         /* i: waiting for extra flags and operating system (gzip) */
+const    EXLEN = 5;      /* i: waiting for extra length (gzip) */
+const    EXTRA = 6;      /* i: waiting for extra bytes (gzip) */
+const    NAME = 7;       /* i: waiting for end of file name (gzip) */
+const    COMMENT = 8;    /* i: waiting for end of comment (gzip) */
+const    HCRC = 9;       /* i: waiting for header crc (gzip) */
+const    DICTID = 10;    /* i: waiting for dictionary check value */
+const    DICT = 11;      /* waiting for inflateSetDictionary() call */
+const        TYPE = 12;      /* i: waiting for type bits, including last-flag bit */
+const        TYPEDO = 13;    /* i: same, but skip check to exit inflate on new block */
+const        STORED = 14;    /* i: waiting for stored size (length and complement) */
+const        COPY_ = 15;     /* i/o: same as COPY below, but only first time in */
+const        COPY = 16;      /* i/o: waiting for input or output to copy stored block */
+const        TABLE = 17;     /* i: waiting for dynamic block table lengths */
+const        LENLENS = 18;   /* i: waiting for code length code lengths */
+const        CODELENS = 19;  /* i: waiting for length/lit and distance code lengths */
+const            LEN_ = 20;      /* i: same as LEN below, but only first time in */
+const            LEN = 21;       /* i: waiting for length/lit/eob code */
+const            LENEXT = 22;    /* i: waiting for length extra bits */
+const            DIST = 23;      /* i: waiting for distance code */
+const            DISTEXT = 24;   /* i: waiting for distance extra bits */
+const            MATCH = 25;     /* o: waiting for output space to copy string */
+const            LIT = 26;       /* o: waiting for output space to write literal */
+const    CHECK = 27;     /* i: waiting for 32-bit check value */
+const    LENGTH = 28;    /* i: waiting for 32-bit length (gzip) */
+const    DONE = 29;      /* finished check, done -- remain here until reset */
+const    BAD = 30;       /* got a data error -- remain here until reset */
+const    MEM = 31;       /* got an inflate() memory error -- remain here until reset */
+const    SYNC = 32;      /* looking for synchronization bytes to restart inflate() */
 
@@ -107,12 +85,13 @@ /* ===========================================================================*/
 
-var ENOUGH_LENS = 852;
-var ENOUGH_DISTS = 592;
-//var ENOUGH =  (ENOUGH_LENS+ENOUGH_DISTS);
+const ENOUGH_LENS = 852;
+const ENOUGH_DISTS = 592;
+//const ENOUGH =  (ENOUGH_LENS+ENOUGH_DISTS);
 
-var MAX_WBITS = 15;
+const MAX_WBITS = 15;
 /* 32K LZ77 window */
-var DEF_WBITS = MAX_WBITS;
+const DEF_WBITS = MAX_WBITS;
 
 
-function zswap32(q) {
+const zswap32 = (q) => {
+
   return  (((q >>> 24) & 0xff) +
@@ -122,3 +101,3 @@ ((q >>> 8) & 0xff00) +
           ((q & 0xff) << 24));
-}
+};
 
@@ -169,4 +148,4 @@
 
-  this.lens = new utils.Buf16(320); /* temporary storage for code lengths */
-  this.work = new utils.Buf16(288); /* work area for code table building */
+  this.lens = new Uint16Array(320); /* temporary storage for code lengths */
+  this.work = new Uint16Array(288); /* work area for code table building */
 
@@ -177,3 +156,3 @@ /*
   */
-  //this.codes = new utils.Buf32(ENOUGH);       /* space for code tables */
+  //this.codes = new Int32Array(ENOUGH);       /* space for code tables */
   this.lendyn = null;              /* dynamic table for length/literal codes (JS specific) */
@@ -186,7 +165,7 @@ this.distdyn = null;             /* dynamic table for distance codes (JS specific) */
 
-function inflateResetKeep(strm) {
-  var state;
 
+const inflateResetKeep = (strm) => {
+
   if (!strm || !strm.state) { return Z_STREAM_ERROR; }
-  state = strm.state;
+  const state = strm.state;
   strm.total_in = strm.total_out = state.total = 0;
@@ -205,4 +184,4 @@ strm.msg = ''; /*Z_NULL*/
   //state.lencode = state.distcode = state.next = state.codes;
-  state.lencode = state.lendyn = new utils.Buf32(ENOUGH_LENS);
-  state.distcode = state.distdyn = new utils.Buf32(ENOUGH_DISTS);
+  state.lencode = state.lendyn = new Int32Array(ENOUGH_LENS);
+  state.distcode = state.distdyn = new Int32Array(ENOUGH_DISTS);
 
@@ -213,9 +192,9 @@ state.sane = 1;
   return Z_OK;
-}
+};
 
-function inflateReset(strm) {
-  var state;
 
+const inflateReset = (strm) => {
+
   if (!strm || !strm.state) { return Z_STREAM_ERROR; }
-  state = strm.state;
+  const state = strm.state;
   state.wsize = 0;
@@ -226,11 +205,11 @@ state.whave = 0;
 
-}
+};
 
-function inflateReset2(strm, windowBits) {
-  var wrap;
-  var state;
 
+const inflateReset2 = (strm, windowBits) => {
+  let wrap;
+
   /* get the state */
   if (!strm || !strm.state) { return Z_STREAM_ERROR; }
-  state = strm.state;
+  const state = strm.state;
 
@@ -261,12 +240,11 @@ /* extract wrap request from windowBits parameter */
   return inflateReset(strm);
-}
+};
 
-function inflateInit2(strm, windowBits) {
-  var ret;
-  var state;
 
+const inflateInit2 = (strm, windowBits) => {
+
   if (!strm) { return Z_STREAM_ERROR; }
   //strm.msg = Z_NULL;                 /* in case we return an error */
 
-  state = new InflateState();
+  const state = new InflateState();
 
@@ -277,3 +255,3 @@ //if (state === Z_NULL) return Z_MEM_ERROR;
   state.window = null/*Z_NULL*/;
-  ret = inflateReset2(strm, windowBits);
+  const ret = inflateReset2(strm, windowBits);
   if (ret !== Z_OK) {
@@ -283,7 +261,9 @@ strm.state = null/*Z_NULL*/;
   return ret;
-}
+};
 
-function inflateInit(strm) {
+
+const inflateInit = (strm) => {
+
   return inflateInit2(strm, DEF_WBITS);
-}
+};
 
@@ -301,16 +281,16 @@
  */
-var virgin = true;
+let virgin = true;
 
-var lenfix, distfix; // We have no pointers in JS, so keep tables separate
+let lenfix, distfix; // We have no pointers in JS, so keep tables separate
 
-function fixedtables(state) {
+
+const fixedtables = (state) => {
+
   /* build fixed huffman tables if first call (may not be thread safe) */
   if (virgin) {
-    var sym;
+    lenfix = new Int32Array(512);
+    distfix = new Int32Array(32);
 
-    lenfix = new utils.Buf32(512);
-    distfix = new utils.Buf32(32);
-
     /* literal/length table */
-    sym = 0;
+    let sym = 0;
     while (sym < 144) { state.lens[sym++] = 8; }
@@ -337,3 +317,3 @@ while (sym < 256) { state.lens[sym++] = 9; }
   state.distbits = 5;
-}
+};
 
@@ -355,6 +335,7 @@
  */
-function updatewindow(strm, src, end, copy) {
-  var dist;
-  var state = strm.state;
+const updatewindow = (strm, src, end, copy) => {
 
+  let dist;
+  const state = strm.state;
+
   /* if it hasn't been done already, allocate space for the window */
@@ -366,3 +347,3 @@ if (state.window === null) {
 
-    state.window = new utils.Buf8(state.wsize);
+    state.window = new Uint8Array(state.wsize);
   }
@@ -372,3 +353,3 @@
   if (copy >= state.wsize) {
-    utils.arraySet(state.window, src, end - state.wsize, state.wsize, 0);
+    state.window.set(src.subarray(end - state.wsize, end), 0);
     state.wnext = 0;
@@ -383,7 +364,7 @@ state.whave = state.wsize;
     //zmemcpy(state->window + state->wnext, end - copy, dist);
-    utils.arraySet(state.window, src, end - copy, dist, state.wnext);
+    state.window.set(src.subarray(end - copy, end - copy + dist), state.wnext);
     copy -= dist;
     if (copy) {
       //zmemcpy(state->window, end - copy, copy);
-      utils.arraySet(state.window, src, end - copy, copy, 0);
+      state.window.set(src.subarray(end - copy, end), 0);
       state.wnext = copy;
@@ -399,31 +380,33 @@ state.whave = state.wsize;
   return 0;
-}
+};
 
-function inflate(strm, flush) {
-  var state;
-  var input, output;          // input/output buffers
-  var next;                   /* next input INDEX */
-  var put;                    /* next output INDEX */
-  var have, left;             /* available input and output */
-  var hold;                   /* bit buffer */
-  var bits;                   /* bits in bit buffer */
-  var _in, _out;              /* save starting available input and output */
-  var copy;                   /* number of stored or match bytes to copy */
-  var from;                   /* where to copy match bytes from */
-  var from_source;
-  var here = 0;               /* current decoding table entry */
-  var here_bits, here_op, here_val; // paked "here" denormalized (JS specific)
-  //var last;                   /* parent table entry */
-  var last_bits, last_op, last_val; // paked "last" denormalized (JS specific)
-  var len;                    /* length to copy for repeats, bits to drop */
-  var ret;                    /* return code */
-  var hbuf = new utils.Buf8(4);    /* buffer for gzip header crc calculation */
-  var opts;
 
-  var n; // temporary var for NEED_BITS
+const inflate = (strm, flush) => {
 
-  var order = /* permutation of code lengths */
-    [ 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 ];
+  let state;
+  let input, output;          // input/output buffers
+  let next;                   /* next input INDEX */
+  let put;                    /* next output INDEX */
+  let have, left;             /* available input and output */
+  let hold;                   /* bit buffer */
+  let bits;                   /* bits in bit buffer */
+  let _in, _out;              /* save starting available input and output */
+  let copy;                   /* number of stored or match bytes to copy */
+  let from;                   /* where to copy match bytes from */
+  let from_source;
+  let here = 0;               /* current decoding table entry */
+  let here_bits, here_op, here_val; // paked "here" denormalized (JS specific)
+  //let last;                   /* parent table entry */
+  let last_bits, last_op, last_val; // paked "last" denormalized (JS specific)
+  let len;                    /* length to copy for repeats, bits to drop */
+  let ret;                    /* return code */
+  const hbuf = new Uint8Array(4);    /* buffer for gzip header crc calculation */
+  let opts;
 
+  let n; // temporary variable for NEED_BITS
 
+  const order = /* permutation of code lengths */
+    new Uint8Array([ 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 ]);
+
+
   if (!strm || !strm.state || !strm.output ||
@@ -512,3 +495,8 @@ (!strm.input && strm.avail_in !== 0)) {
         }
-        state.dmax = 1 << len;
+
+        // !!! pako patch. Force use `options.windowBits` if passed.
+        // Required to always use max window size by default.
+        state.dmax = 1 << state.wbits;
+        //state.dmax = 1 << len;
+
         //Tracev((stderr, "inflate:   zlib header ok\n"));
@@ -651,11 +639,11 @@ strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;
                 // Use untyped array for more convenient processing later
-                state.head.extra = new Array(state.head.extra_len);
+                state.head.extra = new Uint8Array(state.head.extra_len);
               }
-              utils.arraySet(
-                state.head.extra,
-                input,
-                next,
-                // extra field is limited to 65536 bytes
-                // - no need for additional size check
-                copy,
+              state.head.extra.set(
+                input.subarray(
+                  next,
+                  // extra field is limited to 65536 bytes
+                  // - no need for additional size check
+                  next + copy
+                ),
                 /*len + copy > state.head.extra_max - len ? state.head.extra_max : copy,*/
@@ -886,3 +874,3 @@ len
           //--- zmemcpy(put, next, copy); ---
-          utils.arraySet(output, input, next, copy, put);
+          output.set(input.subarray(next, next + copy), put);
           //---//
@@ -1495,6 +1483,7 @@ have -= copy;
   return ret;
-}
+};
 
-function inflateEnd(strm) {
 
+const inflateEnd = (strm) => {
+
   if (!strm || !strm.state /*|| strm->zfree == (free_func)0*/) {
@@ -1504,3 +1493,3 @@ return Z_STREAM_ERROR;
 
-  var state = strm.state;
+  let state = strm.state;
   if (state.window) {
@@ -1511,10 +1500,10 @@ state.window = null;
   return Z_OK;
-}
+};
 
-function inflateGetHeader(strm, head) {
-  var state;
 
+const inflateGetHeader = (strm, head) => {
+
   /* check state */
   if (!strm || !strm.state) { return Z_STREAM_ERROR; }
-  state = strm.state;
+  const state = strm.state;
   if ((state.wrap & 2) === 0) { return Z_STREAM_ERROR; }
@@ -1526,11 +1515,12 @@
   return Z_OK;
-}
+};
 
-function inflateSetDictionary(strm, dictionary) {
-  var dictLength = dictionary.length;
 
-  var state;
-  var dictid;
-  var ret;
+const inflateSetDictionary = (strm, dictionary) => {
+  const dictLength = dictionary.length;
 
+  let state;
+  let dictid;
+  let ret;
+
   /* check state */
@@ -1563,4 +1553,5 @@ if (!strm /* == Z_NULL */ || !strm.state /* == Z_NULL */) { return Z_STREAM_ERROR; }
   return Z_OK;
-}
+};
 
+
 exports.inflateReset = inflateReset;
@@ -1567,0 +1558,0 @@ exports.inflateReset2 = inflateReset2;

lib/zlib/inftrees.js

@@ -22,64 +22,62 @@ 'use strict';
 
-var utils = require('../utils/common');
+const MAXBITS = 15;
+const ENOUGH_LENS = 852;
+const ENOUGH_DISTS = 592;
+//const ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS);
 
-var MAXBITS = 15;
-var ENOUGH_LENS = 852;
-var ENOUGH_DISTS = 592;
-//var ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS);
+const CODES = 0;
+const LENS = 1;
+const DISTS = 2;
 
-var CODES = 0;
-var LENS = 1;
-var DISTS = 2;
-
-var lbase = [ /* Length codes 257..285 base */
+const lbase = new Uint16Array([ /* Length codes 257..285 base */
   3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
   35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0
-];
+]);
 
-var lext = [ /* Length codes 257..285 extra */
+const lext = new Uint8Array([ /* Length codes 257..285 extra */
   16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
   19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78
-];
+]);
 
-var dbase = [ /* Distance codes 0..29 base */
+const dbase = new Uint16Array([ /* Distance codes 0..29 base */
   1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
   257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
   8193, 12289, 16385, 24577, 0, 0
-];
+]);
 
-var dext = [ /* Distance codes 0..29 extra */
+const dext = new Uint8Array([ /* Distance codes 0..29 extra */
   16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
   23, 23, 24, 24, 25, 25, 26, 26, 27, 27,
   28, 28, 29, 29, 64, 64
-];
+]);
 
-module.exports = function inflate_table(type, lens, lens_index, codes, table, table_index, work, opts)
+const inflate_table = (type, lens, lens_index, codes, table, table_index, work, opts) =>
 {
-  var bits = opts.bits;
+  const bits = opts.bits;
       //here = opts.here; /* table entry for duplication */
 
-  var len = 0;               /* a code's length in bits */
-  var sym = 0;               /* index of code symbols */
-  var min = 0, max = 0;          /* minimum and maximum code lengths */
-  var root = 0;              /* number of index bits for root table */
-  var curr = 0;              /* number of index bits for current table */
-  var drop = 0;              /* code bits to drop for sub-table */
-  var left = 0;                   /* number of prefix codes available */
-  var used = 0;              /* code entries in table used */
-  var huff = 0;              /* Huffman code */
-  var incr;              /* for incrementing code, index */
-  var fill;              /* index for replicating entries */
-  var low;               /* low bits for current root entry */
-  var mask;              /* mask for low root bits */
-  var next;             /* next available space in table */
-  var base = null;     /* base value table to use */
-  var base_index = 0;
-//  var shoextra;    /* extra bits table to use */
-  var end;                    /* use base and extra for symbol > end */
-  var count = new utils.Buf16(MAXBITS + 1); //[MAXBITS+1];    /* number of codes of each length */
-  var offs = new utils.Buf16(MAXBITS + 1); //[MAXBITS+1];     /* offsets in table for each length */
-  var extra = null;
-  var extra_index = 0;
+  let len = 0;               /* a code's length in bits */
+  let sym = 0;               /* index of code symbols */
+  let min = 0, max = 0;          /* minimum and maximum code lengths */
+  let root = 0;              /* number of index bits for root table */
+  let curr = 0;              /* number of index bits for current table */
+  let drop = 0;              /* code bits to drop for sub-table */
+  let left = 0;                   /* number of prefix codes available */
+  let used = 0;              /* code entries in table used */
+  let huff = 0;              /* Huffman code */
+  let incr;              /* for incrementing code, index */
+  let fill;              /* index for replicating entries */
+  let low;               /* low bits for current root entry */
+  let mask;              /* mask for low root bits */
+  let next;             /* next available space in table */
+  let base = null;     /* base value table to use */
+  let base_index = 0;
+//  let shoextra;    /* extra bits table to use */
+  let end;                    /* use base and extra for symbol > end */
+  const count = new Uint16Array(MAXBITS + 1); //[MAXBITS+1];    /* number of codes of each length */
+  const offs = new Uint16Array(MAXBITS + 1); //[MAXBITS+1];     /* offsets in table for each length */
+  let extra = null;
+  let extra_index = 0;
 
-  var here_bits, here_op, here_val;
+  let here_bits, here_op, here_val;
 
@@ -345,1 +343,4 @@ /*
 };
+
+
+module.exports = inflate_table;

lib/zlib/trees.js

@@ -24,4 +24,2 @@ 'use strict';
 
-var utils = require('../utils/common');
-
 /* Public constants ==========================================================*/
@@ -31,13 +29,13 @@ /* ===========================================================================*/
 
-//var Z_FILTERED          = 1;
-//var Z_HUFFMAN_ONLY      = 2;
-//var Z_RLE               = 3;
-var Z_FIXED               = 4;
-//var Z_DEFAULT_STRATEGY  = 0;
+//const Z_FILTERED          = 1;
+//const Z_HUFFMAN_ONLY      = 2;
+//const Z_RLE               = 3;
+const Z_FIXED               = 4;
+//const Z_DEFAULT_STRATEGY  = 0;
 
 /* Possible values of the data_type field (though see inflate()) */
-var Z_BINARY              = 0;
-var Z_TEXT                = 1;
-//var Z_ASCII             = 1; // = Z_TEXT
-var Z_UNKNOWN             = 2;
+const Z_BINARY              = 0;
+const Z_TEXT                = 1;
+//const Z_ASCII             = 1; // = Z_TEXT
+const Z_UNKNOWN             = 2;
 
@@ -47,13 +45,13 @@ /*============================================================================*/
 
-function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } }
+function zero(buf) { let len = buf.length; while (--len >= 0) { buf[len] = 0; } }
 
 // From zutil.h
 
-var STORED_BLOCK = 0;
-var STATIC_TREES = 1;
-var DYN_TREES    = 2;
+const STORED_BLOCK = 0;
+const STATIC_TREES = 1;
+const DYN_TREES    = 2;
 /* The three kinds of block type */
 
-var MIN_MATCH    = 3;
-var MAX_MATCH    = 258;
+const MIN_MATCH    = 3;
+const MAX_MATCH    = 258;
 /* The minimum and maximum match lengths */
@@ -66,24 +64,24 @@
 
-var LENGTH_CODES  = 29;
+const LENGTH_CODES  = 29;
 /* number of length codes, not counting the special END_BLOCK code */
 
-var LITERALS      = 256;
+const LITERALS      = 256;
 /* number of literal bytes 0..255 */
 
-var L_CODES       = LITERALS + 1 + LENGTH_CODES;
+const L_CODES       = LITERALS + 1 + LENGTH_CODES;
 /* number of Literal or Length codes, including the END_BLOCK code */
 
-var D_CODES       = 30;
+const D_CODES       = 30;
 /* number of distance codes */
 
-var BL_CODES      = 19;
+const BL_CODES      = 19;
 /* number of codes used to transfer the bit lengths */
 
-var HEAP_SIZE     = 2 * L_CODES + 1;
+const HEAP_SIZE     = 2 * L_CODES + 1;
 /* maximum heap size */
 
-var MAX_BITS      = 15;
+const MAX_BITS      = 15;
 /* All codes must not exceed MAX_BITS bits */
 
-var Buf_size      = 16;
+const Buf_size      = 16;
 /* size of bit buffer in bi_buf */
@@ -96,29 +94,29 @@
 
-var MAX_BL_BITS = 7;
+const MAX_BL_BITS = 7;
 /* Bit length codes must not exceed MAX_BL_BITS bits */
 
-var END_BLOCK   = 256;
+const END_BLOCK   = 256;
 /* end of block literal code */
 
-var REP_3_6     = 16;
+const REP_3_6     = 16;
 /* repeat previous bit length 3-6 times (2 bits of repeat count) */
 
-var REPZ_3_10   = 17;
+const REPZ_3_10   = 17;
 /* repeat a zero length 3-10 times  (3 bits of repeat count) */
 
-var REPZ_11_138 = 18;
+const REPZ_11_138 = 18;
 /* repeat a zero length 11-138 times  (7 bits of repeat count) */
 
 /* eslint-disable comma-spacing,array-bracket-spacing */
-var extra_lbits =   /* extra bits for each length code */
-  [0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0];
+const extra_lbits =   /* extra bits for each length code */
+  new Uint8Array([0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0]);
 
-var extra_dbits =   /* extra bits for each distance code */
-  [0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13];
+const extra_dbits =   /* extra bits for each distance code */
+  new Uint8Array([0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13]);
 
-var extra_blbits =  /* extra bits for each bit length code */
-  [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7];
+const extra_blbits =  /* extra bits for each bit length code */
+  new Uint8Array([0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7]);
 
-var bl_order =
-  [16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15];
+const bl_order =
+  new Uint8Array([16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]);
 /* eslint-enable comma-spacing,array-bracket-spacing */
@@ -136,6 +134,6 @@
 
-var DIST_CODE_LEN = 512; /* see definition of array dist_code below */
+const DIST_CODE_LEN = 512; /* see definition of array dist_code below */
 
 // !!!! Use flat array instead of structure, Freq = i*2, Len = i*2+1
-var static_ltree  = new Array((L_CODES + 2) * 2);
+const static_ltree  = new Array((L_CODES + 2) * 2);
 zero(static_ltree);
@@ -148,3 +146,3 @@ /* The static literal tree. Since the bit lengths are imposed, there is no
 
-var static_dtree  = new Array(D_CODES * 2);
+const static_dtree  = new Array(D_CODES * 2);
 zero(static_dtree);
@@ -155,3 +153,3 @@ /* The static distance tree. (Actually a trivial tree since all codes use
 
-var _dist_code    = new Array(DIST_CODE_LEN);
+const _dist_code    = new Array(DIST_CODE_LEN);
 zero(_dist_code);
@@ -163,11 +161,11 @@ /* Distance codes. The first 256 values correspond to the distances
 
-var _length_code  = new Array(MAX_MATCH - MIN_MATCH + 1);
+const _length_code  = new Array(MAX_MATCH - MIN_MATCH + 1);
 zero(_length_code);
 /* length code for each normalized match length (0 == MIN_MATCH) */
 
-var base_length   = new Array(LENGTH_CODES);
+const base_length   = new Array(LENGTH_CODES);
 zero(base_length);
 /* First normalized length for each code (0 = MIN_MATCH) */
 
-var base_dist     = new Array(D_CODES);
+const base_dist     = new Array(D_CODES);
 zero(base_dist);
@@ -190,5 +188,5 @@ /* First normalized distance for each code (0 = distance of 1) */
 
-var static_l_desc;
-var static_d_desc;
-var static_bl_desc;
+let static_l_desc;
+let static_d_desc;
+let static_bl_desc;
 
@@ -204,5 +202,6 @@
 
-function d_code(dist) {
+const d_code = (dist) => {
+
   return dist < 256 ? _dist_code[dist] : _dist_code[256 + (dist >>> 7)];
-}
+};
 
@@ -214,3 +213,3 @@
  */
-function put_short(s, w) {
+const put_short = (s, w) => {
 //    put_byte(s, (uch)((w) & 0xff));
@@ -220,3 +219,3 @@ //    put_byte(s, (uch)((ush)(w) >> 8));
   s.pending_buf[s.pending++] = (w >>> 8) & 0xff;
-}
+};
 
@@ -228,3 +227,4 @@
  */
-function send_bits(s, value, length) {
+const send_bits = (s, value, length) => {
+
   if (s.bi_valid > (Buf_size - length)) {
@@ -239,8 +239,9 @@ s.bi_buf |= (value << s.bi_valid) & 0xffff;
   }
-}
+};
 
 
-function send_code(s, c, tree) {
+const send_code = (s, c, tree) => {
+
   send_bits(s, tree[c * 2]/*.Code*/, tree[c * 2 + 1]/*.Len*/);
-}
+};
 
@@ -253,4 +254,5 @@
  */
-function bi_reverse(code, len) {
-  var res = 0;
+const bi_reverse = (code, len) => {
+
+  let res = 0;
   do {
@@ -262,3 +264,3 @@ res |= code & 1;
   return res >>> 1;
-}
+};
 
@@ -269,3 +271,4 @@
  */
-function bi_flush(s) {
+const bi_flush = (s) => {
+
   if (s.bi_valid === 16) {
@@ -281,3 +284,3 @@ put_short(s, s.bi_buf);
   }
-}
+};
 
@@ -295,19 +298,19 @@
  */
-function gen_bitlen(s, desc)
+const gen_bitlen = (s, desc) =>
 //    deflate_state *s;
 //    tree_desc *desc;    /* the tree descriptor */
 {
-  var tree            = desc.dyn_tree;
-  var max_code        = desc.max_code;
-  var stree           = desc.stat_desc.static_tree;
-  var has_stree       = desc.stat_desc.has_stree;
-  var extra           = desc.stat_desc.extra_bits;
-  var base            = desc.stat_desc.extra_base;
-  var max_length      = desc.stat_desc.max_length;
-  var h;              /* heap index */
-  var n, m;           /* iterate over the tree elements */
-  var bits;           /* bit length */
-  var xbits;          /* extra bits */
-  var f;              /* frequency */
-  var overflow = 0;   /* number of elements with bit length too large */
+  const tree            = desc.dyn_tree;
+  const max_code        = desc.max_code;
+  const stree           = desc.stat_desc.static_tree;
+  const has_stree       = desc.stat_desc.has_stree;
+  const extra           = desc.stat_desc.extra_bits;
+  const base            = desc.stat_desc.extra_base;
+  const max_length      = desc.stat_desc.max_length;
+  let h;              /* heap index */
+  let n, m;           /* iterate over the tree elements */
+  let bits;           /* bit length */
+  let xbits;          /* extra bits */
+  let f;              /* frequency */
+  let overflow = 0;   /* number of elements with bit length too large */
 
@@ -382,3 +385,3 @@ for (bits = 0; bits <= MAX_BITS; bits++) {
   }
-}
+};
 
@@ -394,3 +397,3 @@
  */
-function gen_codes(tree, max_code, bl_count)
+const gen_codes = (tree, max_code, bl_count) =>
 //    ct_data *tree;             /* the tree to decorate */
@@ -400,6 +403,6 @@ //    int max_code;              /* largest code with non zero frequency */
 {
-  var next_code = new Array(MAX_BITS + 1); /* next code value for each bit length */
-  var code = 0;              /* running code value */
-  var bits;                  /* bit index */
-  var n;                     /* code index */
+  const next_code = new Array(MAX_BITS + 1); /* next code value for each bit length */
+  let code = 0;              /* running code value */
+  let bits;                  /* bit index */
+  let n;                     /* code index */
 
@@ -420,3 +423,3 @@ /* The distribution counts are first used to generate the code values
   for (n = 0;  n <= max_code; n++) {
-    var len = tree[n * 2 + 1]/*.Len*/;
+    let len = tree[n * 2 + 1]/*.Len*/;
     if (len === 0) { continue; }
@@ -429,3 +432,3 @@ /* Now reverse the bits */
   }
-}
+};
 
@@ -436,9 +439,10 @@
  */
-function tr_static_init() {
-  var n;        /* iterates over tree elements */
-  var bits;     /* bit counter */
-  var length;   /* length value */
-  var code;     /* code value */
-  var dist;     /* distance index */
-  var bl_count = new Array(MAX_BITS + 1);
+const tr_static_init = () => {
+
+  let n;        /* iterates over tree elements */
+  let bits;     /* bit counter */
+  let length;   /* length value */
+  let code;     /* code value */
+  let dist;     /* distance index */
+  const bl_count = new Array(MAX_BITS + 1);
   /* number of codes at each bit length for an optimal tree */
@@ -535,3 +539,3 @@
   //static_init_done = true;
-}
+};
 
@@ -542,5 +546,6 @@
  */
-function init_block(s) {
-  var n; /* iterates over tree elements */
+const init_block = (s) => {
 
+  let n; /* iterates over tree elements */
+
   /* Initialize the trees. */
@@ -554,3 +559,3 @@ for (n = 0; n < L_CODES;  n++) { s.dyn_ltree[n * 2]/*.Freq*/ = 0; }
   s.last_lit = s.matches = 0;
-}
+};
 
@@ -561,3 +566,3 @@
  */
-function bi_windup(s)
+const bi_windup = (s) =>
 {
@@ -572,3 +577,3 @@ if (s.bi_valid > 8) {
   s.bi_valid = 0;
-}
+};
 
@@ -579,3 +584,3 @@ /* ===========================================================================
  */
-function copy_block(s, buf, len, header)
+const copy_block = (s, buf, len, header) =>
 //DeflateState *s;
@@ -595,5 +600,5 @@ //charf    *buf;    /* the input data */
 //  }
-  utils.arraySet(s.pending_buf, s.window, buf, len, s.pending);
+  s.pending_buf.set(s.window.subarray(buf, buf + len), s.pending);
   s.pending += len;
-}
+};
 
@@ -604,8 +609,9 @@ /* ===========================================================================
  */
-function smaller(tree, n, m, depth) {
-  var _n2 = n * 2;
-  var _m2 = m * 2;
+const smaller = (tree, n, m, depth) => {
+
+  const _n2 = n * 2;
+  const _m2 = m * 2;
   return (tree[_n2]/*.Freq*/ < tree[_m2]/*.Freq*/ ||
          (tree[_n2]/*.Freq*/ === tree[_m2]/*.Freq*/ && depth[n] <= depth[m]));
-}
+};
 
@@ -618,3 +624,3 @@ /* ===========================================================================
  */
-function pqdownheap(s, tree, k)
+const pqdownheap = (s, tree, k) =>
 //    deflate_state *s;
@@ -624,4 +630,4 @@ //    ct_data *tree;  /* the tree to restore */
 {
-  var v = s.heap[k];
-  var j = k << 1;  /* left son of k */
+  const v = s.heap[k];
+  let j = k << 1;  /* left son of k */
   while (j <= s.heap_len) {
@@ -644,7 +650,7 @@ /* Set j to the smallest of the two sons: */
   s.heap[k] = v;
-}
+};
 
 
 // inlined manually
-// var SMALLEST = 1;
+// const SMALLEST = 1;
 
@@ -654,3 +660,3 @@ /* ===========================================================================
  */
-function compress_block(s, ltree, dtree)
+const compress_block = (s, ltree, dtree) =>
 //    deflate_state *s;
@@ -660,7 +666,7 @@ //    const ct_data *ltree; /* literal tree */
 {
-  var dist;           /* distance of matched string */
-  var lc;             /* match length or unmatched char (if dist == 0) */
-  var lx = 0;         /* running index in l_buf */
-  var code;           /* the code to send */
-  var extra;          /* number of extra bits to send */
+  let dist;           /* distance of matched string */
+  let lc;             /* match length or unmatched char (if dist == 0) */
+  let lx = 0;         /* running index in l_buf */
+  let code;           /* the code to send */
+  let extra;          /* number of extra bits to send */
 
@@ -705,3 +711,3 @@ if (s.last_lit !== 0) {
   send_code(s, END_BLOCK, ltree);
-}
+};
 
@@ -717,13 +723,13 @@
  */
-function build_tree(s, desc)
+const build_tree = (s, desc) =>
 //    deflate_state *s;
 //    tree_desc *desc; /* the tree descriptor */
 {
-  var tree     = desc.dyn_tree;
-  var stree    = desc.stat_desc.static_tree;
-  var has_stree = desc.stat_desc.has_stree;
-  var elems    = desc.stat_desc.elems;
-  var n, m;          /* iterate over heap elements */
-  var max_code = -1; /* largest code with non zero frequency */
-  var node;          /* new node being created */
+  const tree     = desc.dyn_tree;
+  const stree    = desc.stat_desc.static_tree;
+  const has_stree = desc.stat_desc.has_stree;
+  const elems    = desc.stat_desc.elems;
+  let n, m;          /* iterate over heap elements */
+  let max_code = -1; /* largest code with non zero frequency */
+  let node;          /* new node being created */
 
@@ -807,3 +813,3 @@ /* Construct the initial heap, with least frequent element in
   gen_codes(tree, max_code, s.bl_count);
-}
+};
 
@@ -815,3 +821,3 @@
  */
-function scan_tree(s, tree, max_code)
+const scan_tree = (s, tree, max_code) =>
 //    deflate_state *s;
@@ -821,11 +827,11 @@ //    ct_data *tree;   /* the tree to be scanned */
 {
-  var n;                     /* iterates over all tree elements */
-  var prevlen = -1;          /* last emitted length */
-  var curlen;                /* length of current code */
+  let n;                     /* iterates over all tree elements */
+  let prevlen = -1;          /* last emitted length */
+  let curlen;                /* length of current code */
 
-  var nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */
+  let nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */
 
-  var count = 0;             /* repeat count of the current code */
-  var max_count = 7;         /* max repeat count */
-  var min_count = 4;         /* min repeat count */
+  let count = 0;             /* repeat count of the current code */
+  let max_count = 7;         /* max repeat count */
+  let min_count = 4;         /* min repeat count */
 
@@ -876,3 +882,3 @@ if (nextlen === 0) {
   }
-}
+};
 
@@ -884,3 +890,3 @@
  */
-function send_tree(s, tree, max_code)
+const send_tree = (s, tree, max_code) =>
 //    deflate_state *s;
@@ -890,11 +896,11 @@ //    ct_data *tree; /* the tree to be scanned */
 {
-  var n;                     /* iterates over all tree elements */
-  var prevlen = -1;          /* last emitted length */
-  var curlen;                /* length of current code */
+  let n;                     /* iterates over all tree elements */
+  let prevlen = -1;          /* last emitted length */
+  let curlen;                /* length of current code */
 
-  var nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */
+  let nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */
 
-  var count = 0;             /* repeat count of the current code */
-  var max_count = 7;         /* max repeat count */
-  var min_count = 4;         /* min repeat count */
+  let count = 0;             /* repeat count of the current code */
+  let max_count = 7;         /* max repeat count */
+  let min_count = 4;         /* min repeat count */
 
@@ -950,3 +956,3 @@ /* tree[max_code+1].Len = -1; */  /* guard already set */
   }
-}
+};
 
@@ -958,5 +964,6 @@
  */
-function build_bl_tree(s) {
-  var max_blindex;  /* index of last bit length code of non zero freq */
+const build_bl_tree = (s) => {
 
+  let max_blindex;  /* index of last bit length code of non zero freq */
+
   /* Determine the bit length frequencies for literal and distance trees */
@@ -987,3 +994,3 @@ scan_tree(s, s.dyn_ltree, s.l_desc.max_code);
   return max_blindex;
-}
+};
 
@@ -996,7 +1003,7 @@
  */
-function send_all_trees(s, lcodes, dcodes, blcodes)
+const send_all_trees = (s, lcodes, dcodes, blcodes) =>
 //    deflate_state *s;
 //    int lcodes, dcodes, blcodes; /* number of codes for each tree */
 {
-  var rank;                    /* index in bl_order */
+  let rank;                    /* index in bl_order */
 
@@ -1021,3 +1028,3 @@ //Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes");
   //Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));
-}
+};
 
@@ -1038,3 +1045,3 @@
  */
-function detect_data_type(s) {
+const detect_data_type = (s) => {
   /* black_mask is the bit mask of black-listed bytes
@@ -1044,4 +1051,4 @@ * set bits 0..6, 14..25, and 28..31
    */
-  var black_mask = 0xf3ffc07f;
-  var n;
+  let black_mask = 0xf3ffc07f;
+  let n;
 
@@ -1070,6 +1077,6 @@ /* Check for non-textual ("black-listed") bytes. */
   return Z_BINARY;
-}
+};
 
 
-var static_init_done = false;
+let static_init_done = false;
 
@@ -1079,3 +1086,3 @@ /* ===========================================================================
  */
-function _tr_init(s)
+const _tr_init = (s) =>
 {
@@ -1097,3 +1104,3 @@
   init_block(s);
-}
+};
 
@@ -1104,3 +1111,3 @@
  */
-function _tr_stored_block(s, buf, stored_len, last)
+const _tr_stored_block = (s, buf, stored_len, last) =>
 //DeflateState *s;
@@ -1113,3 +1120,3 @@ //charf *buf;       /* input block */
   copy_block(s, buf, stored_len, true); /* with header */
-}
+};
 
@@ -1121,7 +1128,7 @@
  */
-function _tr_align(s) {
+const _tr_align = (s) => {
   send_bits(s, STATIC_TREES << 1, 3);
   send_code(s, END_BLOCK, static_ltree);
   bi_flush(s);
-}
+};
 
@@ -1133,3 +1140,3 @@
  */
-function _tr_flush_block(s, buf, stored_len, last)
+const _tr_flush_block = (s, buf, stored_len, last) =>
 //DeflateState *s;
@@ -1140,4 +1147,4 @@ //charf *buf;       /* input block, or NULL if too old */
 {
-  var opt_lenb, static_lenb;  /* opt_len and static_len in bytes */
-  var max_blindex = 0;        /* index of last bit length code of non zero freq */
+  let opt_lenb, static_lenb;  /* opt_len and static_len in bytes */
+  let max_blindex = 0;        /* index of last bit length code of non zero freq */
 
@@ -1216,3 +1223,3 @@ /* Build the Huffman trees unless a stored block is forced */
   //       s->compressed_len-7*last));
-}
+};
 
@@ -1223,3 +1230,3 @@ /* ===========================================================================
  */
-function _tr_tally(s, dist, lc)
+const _tr_tally = (s, dist, lc) =>
 //    deflate_state *s;
@@ -1229,3 +1236,3 @@ //    unsigned dist;  /* distance of matched string */
 {
-  //var out_length, in_length, dcode;
+  //let out_length, in_length, dcode;
 
@@ -1281,3 +1288,3 @@ s.pending_buf[s.d_buf + s.last_lit * 2]     = (dist >>> 8) & 0xff;
    */
-}
+};
 
@@ -1284,0 +1291,0 @@ exports._tr_init  = _tr_init;

package.json

 {
   "name": "pako",
   "description": "zlib port to javascript - fast, modularized, with browser support",
-  "version": "1.0.11",
+  "version": "2.0.0",
   "keywords": [
@@ -11,3 +11,2 @@ "zlib",
   ],
-  "homepage": "https://github.com/nodeca/pako",
   "contributors": [
@@ -28,19 +27,31 @@ "Andrei Tuputcyn (https://github.com/andr83)",
   "repository": "nodeca/pako",
+  "exports": {
+    "import": "./dist/pako.esm.js",
+    "require": "./index.js"
+  },
   "scripts": {
-    "test": "make test"
+    "lint": "eslint .",
+    "test": "npm run lint && mocha",
+    "coverage": "npm run lint && nyc mocha && nyc report --reporter html",
+    "build": "rollup -c",
+    "doc": "node support/build_doc.js",
+    "gh-doc": "npm run doc && gh-pages -d doc -f",
+    "prepublishOnly": "npm run gh-doc"
   },
   "devDependencies": {
-    "ansi": "^0.3.1",
-    "benchmark": "^2.1.4",
-    "browserify": "^16.2.3",
-    "buffer-from": "^1.1.1",
-    "eslint": "^5.9.0",
-    "istanbul": "^0.4.5",
-    "mocha": "^5.2.0",
+    "@babel/preset-env": "^7.12.1",
+    "@rollup/plugin-babel": "^5.2.1",
+    "@rollup/plugin-commonjs": "^16.0.0",
+    "@rollup/plugin-node-resolve": "^10.0.0",
+    "eslint": "^7.13.0",
+    "gh-pages": "^3.1.0",
+    "mocha": "^8.2.1",
     "multiparty": "^4.1.3",
     "ndoc": "^5.0.1",
-    "uglify-js": "=3.4.8",
-    "zlibjs": "^0.3.1"
+    "nyc": "^15.1.0",
+    "rollup": "^2.33.1",
+    "rollup-plugin-terser": "^7.0.2",
+    "shelljs": "^0.8.4"
   },
   "dependencies": {}
 }

README.md

@@ -11,6 +11,5 @@ pako
 
+- Results are binary equal to well known [zlib](http://www.zlib.net/) (now contains ported zlib v1.2.8).
 - Almost as fast in modern JS engines as C implementation (see benchmarks).
 - Works in browsers, you can browserify any separate component.
-- Chunking support for big blobs.
-- Results are binary equal to well known [zlib](http://www.zlib.net/) (now contains ported zlib v1.2.8).
 
@@ -21,47 +20,30 @@ This project was done to understand how fast JS can be and is it necessary to
 
-__Famous projects, using pako:__
+__Benchmarks:__
 
-- [browserify](http://browserify.org/) (via [browserify-zlib](https://github.com/devongovett/browserify-zlib))
-- [JSZip](http://stuk.github.io/jszip/)
-- [mincer](https://github.com/nodeca/mincer)
-- [JS-Git](https://github.com/creationix/js-git) and
-  [Tedit](https://chrome.google.com/webstore/detail/tedit-development-environ/ooekdijbnbbjdfjocaiflnjgoohnblgf)
-  by [@creationix](https://github.com/creationix)
 
+node v12.16.3 (zlib 1.2.9), 1mb input sample:
 
-__Benchmarks:__
-
 ```
-node v0.10.26, 1mb sample:
+deflate-imaya x 4.75 ops/sec ±4.93% (15 runs sampled)
+deflate-pako x 10.38 ops/sec ±0.37% (29 runs sampled)
+deflate-zlib x 17.74 ops/sec ±0.77% (46 runs sampled)
+gzip-pako x 8.86 ops/sec ±1.41% (29 runs sampled)
+inflate-imaya x 107 ops/sec ±0.69% (77 runs sampled)
+inflate-pako x 131 ops/sec ±1.74% (82 runs sampled)
+inflate-zlib x 258 ops/sec ±0.66% (88 runs sampled)
+ungzip-pako x 115 ops/sec ±1.92% (80 runs sampled)
+```
 
-   deflate-dankogai x 4.73 ops/sec ±0.82% (15 runs sampled)
-   deflate-gildas x 4.58 ops/sec ±2.33% (15 runs sampled)
-   deflate-imaya x 3.22 ops/sec ±3.95% (12 runs sampled)
- ! deflate-pako x 6.99 ops/sec ±0.51% (21 runs sampled)
-   deflate-pako-string x 5.89 ops/sec ±0.77% (18 runs sampled)
-   deflate-pako-untyped x 4.39 ops/sec ±1.58% (14 runs sampled)
- * deflate-zlib x 14.71 ops/sec ±4.23% (59 runs sampled)
-   inflate-dankogai x 32.16 ops/sec ±0.13% (56 runs sampled)
-   inflate-imaya x 30.35 ops/sec ±0.92% (53 runs sampled)
- ! inflate-pako x 69.89 ops/sec ±1.46% (71 runs sampled)
-   inflate-pako-string x 19.22 ops/sec ±1.86% (49 runs sampled)
-   inflate-pako-untyped x 17.19 ops/sec ±0.85% (32 runs sampled)
- * inflate-zlib x 70.03 ops/sec ±1.64% (81 runs sampled)
+node v14.15.0 (google's zlib), 1mb output sample:
 
-node v0.11.12, 1mb sample:
-
-   deflate-dankogai x 5.60 ops/sec ±0.49% (17 runs sampled)
-   deflate-gildas x 5.06 ops/sec ±6.00% (16 runs sampled)
-   deflate-imaya x 3.52 ops/sec ±3.71% (13 runs sampled)
- ! deflate-pako x 11.52 ops/sec ±0.22% (32 runs sampled)
-   deflate-pako-string x 9.53 ops/sec ±1.12% (27 runs sampled)
-   deflate-pako-untyped x 5.44 ops/sec ±0.72% (17 runs sampled)
- * deflate-zlib x 14.05 ops/sec ±3.34% (63 runs sampled)
-   inflate-dankogai x 42.19 ops/sec ±0.09% (56 runs sampled)
-   inflate-imaya x 79.68 ops/sec ±1.07% (68 runs sampled)
- ! inflate-pako x 97.52 ops/sec ±0.83% (80 runs sampled)
-   inflate-pako-string x 45.19 ops/sec ±1.69% (57 runs sampled)
-   inflate-pako-untyped x 24.35 ops/sec ±2.59% (40 runs sampled)
- * inflate-zlib x 60.32 ops/sec ±1.36% (69 runs sampled)
 ```
+deflate-imaya x 4.93 ops/sec ±3.09% (16 runs sampled)
+deflate-pako x 10.22 ops/sec ±0.33% (29 runs sampled)
+deflate-zlib x 18.48 ops/sec ±0.24% (48 runs sampled)
+gzip-pako x 10.16 ops/sec ±0.25% (28 runs sampled)
+inflate-imaya x 110 ops/sec ±0.41% (77 runs sampled)
+inflate-pako x 134 ops/sec ±0.66% (83 runs sampled)
+inflate-zlib x 402 ops/sec ±0.74% (87 runs sampled)
+ungzip-pako x 113 ops/sec ±0.62% (80 runs sampled)
+```
 
@@ -74,4 +56,2 @@ zlib's test is partially affected by marshalling (that make sense for inflate only).
 
-node.js:
-
 ```
@@ -81,29 +61,24 @@ npm install pako
 
-browser:
 
-```
-bower install pako
-```
+Examples / API
+--------------
 
-
-Example & API
--------------
-
 Full docs - http://nodeca.github.io/pako/
 
 ```javascript
-var pako = require('pako');
+const pako = require('pako');
 
 // Deflate
 //
-var input = new Uint8Array();
+const input = new Uint8Array();
 //... fill input data here
-var output = pako.deflate(input);
+const output = pako.deflate(input);
 
 // Inflate (simple wrapper can throw exception on broken stream)
 //
-var compressed = new Uint8Array();
+const compressed = new Uint8Array();
 //... fill data to uncompress here
 try {
-  var result = pako.inflate(compressed);
+  const result = pako.inflate(compressed);
+  // ... continue processing
 } catch (err) {
@@ -117,9 +92,23 @@ console.log(err);
 
-var inflator = new pako.Inflate();
+const deflator = new pako.Deflate();
 
-inflator.push(chunk1, false);
-inflator.push(chunk2, false);
+deflator.push(chunk1, false);
+deflator.push(chunk2), false;
 ...
-inflator.push(chunkN, true); // true -> last chunk
+deflator.push(chunk_last, true); // `true` says this chunk is last
 
+if (deflator.err) {
+  console.log(deflator.msg);
+}
+
+const output = deflator.result;
+
+
+const inflator = new pako.Inflate();
+
+inflator.push(chunk1);
+inflator.push(chunk2);
+...
+inflator.push(chunk_last); // no second param because end is auto-detected
+
 if (inflator.err) {
@@ -129,22 +118,19 @@ console.log(inflator.msg);
 
-var output = inflator.result;
-
+const output = inflator.result;
 ```
 
 Sometime you can wish to work with strings. For example, to send
-big objects as json to server. Pako detects input data type. You can
-force output to be string with option `{ to: 'string' }`.
+stringified objects to server. Pako's deflate detects input data type, and
+automatically recode strings to utf-8 prior to compress. Inflate has special
+option, to say compressed data has utf-8 encoding and should be recoded to
+javascript's utf-16.
 
 ```javascript
-var pako = require('pako');
+const pako = require('pako');
 
-var test = { my: 'super', puper: [456, 567], awesome: 'pako' };
+const test = { my: 'super', puper: [456, 567], awesome: 'pako' };
 
-var binaryString = pako.deflate(JSON.stringify(test), { to: 'string' });
+const compressed = pako.deflate(JSON.stringify(test));
 
-//
-// Here you can do base64 encode, make xhr requests and so on.
-//
-
-var restored = JSON.parse(pako.inflate(binaryString, { to: 'string' }));
+const restored = JSON.parse(pako.inflate(compressed, { to: 'string' }));
 ```
@@ -163,3 +149,3 @@
 - High level inflate/deflate wrappers (classes) may not support some flush
-  modes. Those should work: Z_NO_FLUSH, Z_FINISH, Z_SYNC_FLUSH.
+  modes.
 
@@ -166,0 +152,0 @@

Fixed alerts

Dynamic require

Supply chain risk

Dynamic require can indicate the package is performing dangerous or unsafe dynamic code execution.

Found 1 instance in 1 package

Minified code

Quality

This package contains minified code. This may be harmless in some cases where minified code is included in packaged libraries, however packages on npm should not minify code.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

1571082

increased by99.3%

Number of package files

34

increased by25.93%

Lines of code

37217

increased by100.18%

Number of low quality alerts

0

decreased by-100%

Number of low supply chain risk alerts

0

decreased by-100%

Worsened metrics

Dev dependency count

13

increased by18.18%

Number of lines in readme file

178

decreased by-7.29%

No dependency changes