hls-parser - npm Package Compare versions

Comparing version 0.10.7 to 0.10.8

dist/hls-parser.min.js

 /*! For license information please see hls-parser.min.js.LICENSE.txt */
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media and master playlist tags.")}function f(e,t,s){const i=function({attributes:e}){return new o.Rendition({type:e.TYPE,uri:e.URI,groupId:e["GROUP-ID"],language:e.LANGUAGE,assocLanguage:e["ASSOC-LANGUAGE"],name:e.NAME,isDefault:e.DEFAULT,autoselect:e.AUTOSELECT,forced:e.FORCED,instreamId:e["INSTREAM-ID"],characteristics:e.CHARACTERISTICS,channels:e.CHANNELS})}(t),n=e[r.camelify(s)],a=function(e,t){let s=!1;for(const i of e){if(i.name===t.name)return"All EXT-X-MEDIA tags in the same Group MUST have different NAME attributes.";i.isDefault&&(s=!0)}return s&&t.isDefault?"EXT-X-MEDIA A Group MUST NOT have more than one member with a DEFAULT attribute of YES.":""}(n,i);a&&r.INVALIDPLAYLIST(a),n.push(i),i.isDefault&&(e.currentRenditions[r.camelify(s)]=n.length-1)}function S(e,t,s,i,n){const a=new o.Variant({uri:s,bandwidth:t.BANDWIDTH,averageBandwidth:t["AVERAGE-BANDWIDTH"],score:t.SCORE,codecs:t.CODECS,resolution:t.RESOLUTION,frameRate:t["FRAME-RATE"],hdcpLevel:t["HDCP-LEVEL"],allowedCpc:t["ALLOWED-CPC"],videoRange:t["VIDEO-RANGE"],stableVariantId:t["STABLE-VARIANT-ID"],programId:t["PROGRAM-ID"]});for(const s of e)if("EXT-X-MEDIA"===s.name){const e=s.attributes,i=e.TYPE;if(i&&e["GROUP-ID"]||r.INVALIDPLAYLIST("EXT-X-MEDIA TYPE attribute is REQUIRED."),t[i]===e["GROUP-ID"]&&(f(a,s,i),"CLOSED-CAPTIONS"===i))for(const{instreamId:e}of a.closedCaptions)if(e&&e.startsWith("SERVICE")&&n.compatibleVersion<7){n.compatibleVersion=7;break}}return function(e,t,s){for(const i of["AUDIO","VIDEO","SUBTITLES","CLOSED-CAPTIONS"])"CLOSED-CAPTIONS"===i&&"NONE"===e[i]?(s.isClosedCaptionsNone=!0,t.closedCaptions=[]):e[i]&&!t[r.camelify(i)].some((t=>t.groupId===e[i]))&&r.INVALIDPLAYLIST(`${i} attribute MUST match the value of the GROUP-ID attribute of an EXT-X-MEDIA tag whose TYPE attribute is ${i}.`)}(t,a,n),a.isIFrameOnly=i,a}function p(e,t){if(e.method!==t.method)return!1;if(e.uri!==t.uri)return!1;if(e.iv){if(!t.iv)return!1;if(e.iv.length!==t.iv.length)return!1;for(let s=0;s<e.iv.length;s++)if(e.iv[s]!==t.iv[s])return!1}else if(t.iv)return!1;return e.format===t.format&&e.formatVersion===t.formatVersion}function d(e,t,s,i,n,a,T){const u=new o.Segment({uri:t,mediaSequenceNumber:n,discontinuitySequence:a});let E=!1,c=!1;for(let t=s;t<=i;t++){const{name:s,value:i,attributes:n}=e[t];if("EXTINF"===s)!Number.isInteger(i.duration)&&T.compatibleVersion<3&&(T.compatibleVersion=3),Math.round(i.duration)>T.targetDuration&&r.INVALIDPLAYLIST("EXTINF duration, when rounded to the nearest integer, MUST be less than or equal to the target duration"),u.duration=i.duration,u.title=i.title;else if("EXT-X-BYTERANGE"===s)T.compatibleVersion<4&&(T.compatibleVersion=4),u.byterange=i;else if("EXT-X-DISCONTINUITY"===s)u.parts.length>0&&r.INVALIDPLAYLIST("EXT-X-DISCONTINUITY must appear before the 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if("EXT-X-CUE-OUT"===s)u.markers.push(new o.SpliceInfo({type:"OUT",duration:n&&n.DURATION||i}));else if("EXT-X-CUE-IN"===s)u.markers.push(new o.SpliceInfo({type:"IN"}));else if("EXT-X-CUE-OUT-CONT"===s||"EXT-X-CUE"===s||"EXT-OATCLS-SCTE35"===s||"EXT-X-ASSET"===s||"EXT-X-SCTE35"===s)u.markers.push(new o.SpliceInfo({type:"RAW",tagName:s,value:i}));else if("EXT-X-PRELOAD-HINT"!==s||n.TYPE)if("EXT-X-PRELOAD-HINT"===s&&"PART"===n.TYPE&&c)r.INVALIDPLAYLIST("Servers should not add more than one EXT-X-PRELOAD-HINT tag with the same TYPE attribute to a Playlist.");else if("EXT-X-PART"!==s&&"EXT-X-PRELOAD-HINT"!==s||n.URI){if("EXT-X-PRELOAD-HINT"===s&&"MAP"===n.TYPE)E&&r.INVALIDPLAYLIST("Servers should not add more than one EXT-X-PRELOAD-HINT tag with the same TYPE attribute to a Playlist."),E=!0,T.hasMap=!0,u.map=new o.MediaInitializationSection({hint:!0,uri:n.URI,byterange:{length:n["BYTERANGE-LENGTH"],offset:n["BYTERANGE-START"]||0}});else if("EXT-X-PART"===s||"EXT-X-PRELOAD-HINT"===s&&"PART"===n.TYPE){"EXT-X-PART"!==s||n.DURATION||r.INVALIDPLAYLIST("EXT-X-PART: DURATION attribute is mandatory"),"EXT-X-PRELOAD-HINT"===s&&(c=!0);const e=new o.PartialSegment({hint:"EXT-X-PRELOAD-HINT"===s,uri:n.URI,byterange:"EXT-X-PART"===s?n.BYTERANGE:{length:n["BYTERANGE-LENGTH"],offset:n["BYTERANGE-START"]||0},duration:n.DURATION,independent:n.INDEPENDENT,gap:n.GAP});u.parts.push(e)}}else r.INVALIDPLAYLIST("EXT-X-PART / EXT-X-PRELOAD-HINT: URI attribute is mandatory");else r.INVALIDPLAYLIST("EXT-X-PRELOAD-HINT: TYPE attribute is mandatory")}return u}function X(e,t,s,i,n,a,T){const u=new o.PrefetchSegment({uri:t,mediaSequenceNumber:n,discontinuitySequence:a});for(let t=s;t<=i;t++){const{name:s,attributes:i}=e[t];"EXTINF"===s?r.INVALIDPLAYLIST("A prefetch segment must not be advertised with an EXTINF tag."):"EXT-X-DISCONTINUITY"===s?r.INVALIDPLAYLIST("A prefetch segment must not be advertised with an EXT-X-DISCONTINUITY tag."):"EXT-X-PREFETCH-DISCONTINUITY"===s?u.discontinuity=!0:"EXT-X-KEY"===s?(A(T,i),u.key=new o.Key({method:i.METHOD,uri:i.URI,iv:i.IV,format:i.KEYFORMAT,formatVersion:i.KEYFORMATVERSIONS})):"EXT-X-MAP"===s&&r.INVALIDPLAYLIST("Prefetch segments must not be advertised with an EXT-X-MAP tag.")}return u}function R(e,t){const s=new o.MediaPlaylist;let i=-1,n=0,a=!1,T=!1,u=0,E=null,c=null,l=!1;for(const[I,A]of e.entries()){const{name:h,value:N,attributes:f,category:S}=A;if("Segment"!==S){if("EXT-X-VERSION"===h)void 0===s.version?s.version=N:r.INVALIDPLAYLIST("A Playlist file MUST NOT contain more than one EXT-X-VERSION tag.");else if("EXT-X-TARGETDURATION"===h)s.targetDuration=t.targetDuration=N;else if("EXT-X-MEDIA-SEQUENCE"===h)s.segments.length>0&&r.INVALIDPLAYLIST("The EXT-X-MEDIA-SEQUENCE tag MUST appear before the first Media Segment in the Playlist."),s.mediaSequenceBase=n=N;else if("EXT-X-DISCONTINUITY-SEQUENCE"===h)s.segments.length>0&&r.INVALIDPLAYLIST("The EXT-X-DISCONTINUITY-SEQUENCE tag MUST appear before the first Media Segment in the Playlist."),a&&r.INVALIDPLAYLIST("The EXT-X-DISCONTINUITY-SEQUENCE tag MUST appear before any EXT-X-DISCONTINUITY tag."),s.discontinuitySequenceBase=u=N;else if("EXT-X-ENDLIST"===h)s.endlist=!0;else if("EXT-X-PLAYLIST-TYPE"===h)s.playlistType=N;else if("EXT-X-I-FRAMES-ONLY"===h)t.compatibleVersion<4&&(t.compatibleVersion=4),s.isIFrame=!0;else if("EXT-X-INDEPENDENT-SEGMENTS"===h)s.independentSegments&&r.INVALIDPLAYLIST("EXT-X-INDEPENDENT-SEGMENTS tag MUST NOT appear more than once in a Playlist"),s.independentSegments=!0;else if("EXT-X-START"===h)s.start&&r.INVALIDPLAYLIST("EXT-X-START tag MUST NOT appear more than once in a Playlist"),"number"!=typeof f["TIME-OFFSET"]&&r.INVALIDPLAYLIST("EXT-X-START: TIME-OFFSET attribute is REQUIRED"),s.start={offset:f["TIME-OFFSET"],precise:f.PRECISE||!1};else if("EXT-X-SERVER-CONTROL"===h)f["CAN-BLOCK-RELOAD"]||r.INVALIDPLAYLIST("EXT-X-SERVER-CONTROL: CAN-BLOCK-RELOAD=YES is mandatory for Low-Latency HLS"),s.lowLatencyCompatibility={canBlockReload:f["CAN-BLOCK-RELOAD"],canSkipUntil:f["CAN-SKIP-UNTIL"],holdBack:f["HOLD-BACK"],partHoldBack:f["PART-HOLD-BACK"]};else if("EXT-X-PART-INF"===h)f["PART-TARGET"]||r.INVALIDPLAYLIST("EXT-X-PART-INF: PART-TARGET attribute is mandatory"),s.partTargetDuration=f["PART-TARGET"];else if("EXT-X-RENDITION-REPORT"===h)f.URI||r.INVALIDPLAYLIST("EXT-X-RENDITION-REPORT: URI attribute is mandatory"),0===f.URI.search(/^[a-z]+:/)&&r.INVALIDPLAYLIST("EXT-X-RENDITION-REPORT: URI must be relative to the playlist uri"),s.renditionReports.push(new o.RenditionReport({uri:f.URI,lastMSN:f["LAST-MSN"],lastPart:f["LAST-PART"]}));else if("EXT-X-SKIP"===h)f["SKIPPED-SEGMENTS"]||r.INVALIDPLAYLIST("EXT-X-SKIP: SKIPPED-SEGMENTS attribute is mandatory"),t.compatibleVersion<9&&(t.compatibleVersion=9),s.skip=f["SKIPPED-SEGMENTS"],n+=s.skip;else if("EXT-X-PREFETCH"===h){const a=X(e,N,-1===i?I:i,I-1,n++,u,t);a&&(a.discontinuity&&(a.discontinuitySequence++,u=a.discontinuitySequence),a.key?E=a.key:a.key=E,s.prefetchSegments.push(a)),T=!0,i=-1}else if("string"==typeof A){-1===i&&r.INVALIDPLAYLIST("A URI line is not preceded by any segment tags"),s.targetDuration||r.INVALIDPLAYLIST("The EXT-X-TARGETDURATION tag is REQUIRED"),T&&r.INVALIDPLAYLIST("These segments must appear after all complete segments.");const a=d(e,A,i,I-1,n++,u,t);a&&([u,E,c]=D(s,a,u,E,c),!l&&a.parts.length>0&&(l=!0)),i=-1}}else-1===i&&(i=I),"EXT-X-DISCONTINUITY"===h&&(a=!0)}if(-1!==i){const a=d(e,"",i,e.length-1,n++,u,t);if(a){const{parts:e}=a;e.length>0&&!s.endlist&&!e.at(-1)?.hint&&r.INVALIDPLAYLIST("If the Playlist contains EXT-X-PART tags and does not contain an EXT-X-ENDLIST tag, the Playlist must contain an EXT-X-PRELOAD-HINT tag with a TYPE=PART attribute"),D(s,a,E,c),!l&&a.parts.length>0&&(l=!0)}}return function(e){const t=new Map,s=new Map;let i=!1,n=!1;for(let a=e.length-1;a>=0;a--){const{programDateTime:o,dateRange:T}=e[a];if(o&&(n=!0),T&&T.start){i=!0,T.endOnNext&&(T.end||T.duration)&&r.INVALIDPLAYLIST("An EXT-X-DATERANGE tag with an END-ON-NEXT=YES attribute MUST NOT contain DURATION or END-DATE attributes.");const e=T.start.getTime(),n=T.duration||0;T.end&&T.duration&&e+1e3*n!==T.end.getTime()&&r.INVALIDPLAYLIST("END-DATE MUST be equal to the value of the START-DATE attribute plus the value of the DURATION"),T.endOnNext&&(T.end=t.get(T.classId)),t.set(T.classId,T.start);const a=T.end?T.end.getTime():T.start.getTime()+1e3*(T.duration||0),o=s.get(T.classId);if(o){for(const t of o)(t.start<=e&&t.end>e||t.start>=e&&t.start<a)&&r.INVALIDPLAYLIST("DATERANGE tags with the same CLASS should not overlap");o.push({start:e,end:a})}else s.set(T.classId,[{start:e,end:a}])}}i&&!n&&r.INVALIDPLAYLIST("If a Playlist contains an EXT-X-DATERANGE tag, it MUST also contain at least one EXT-X-PROGRAM-DATE-TIME tag.")}(s.segments),s.lowLatencyCompatibility&&function({lowLatencyCompatibility:e,targetDuration:t,partTargetDuration:s,segments:i,renditionReports:n},a){const{canSkipUntil:o,holdBack:T,partHoldBack:u}=e;o<6*t&&r.INVALIDPLAYLIST("The Skip Boundary must be at least six times the EXT-X-TARGETDURATION.");T<3*t&&r.INVALIDPLAYLIST("HOLD-BACK must be at least three times the EXT-X-TARGETDURATION.");if(a){void 0===s&&r.INVALIDPLAYLIST("EXT-X-PART-INF is required if a Playlist contains one or more EXT-X-PART tags"),void 0===u&&r.INVALIDPLAYLIST("EXT-X-PART: PART-HOLD-BACK attribute is mandatory"),u<s&&r.INVALIDPLAYLIST("PART-HOLD-BACK must be at least PART-TARGET");for(const[e,{parts:t}]of i.entries()){t.length>0&&e<i.length-3&&r.INVALIDPLAYLIST("Remove EXT-X-PART tags from the Playlist after they are greater than three target durations from the end of the Playlist.");for(const[e,{duration:i}]of t.entries())void 0!==i&&(i>s&&r.INVALIDPLAYLIST("PART-TARGET is the maximum duration of any Partial Segment"),e<t.length-1&&i<.85*s&&r.INVALIDPLAYLIST("All Partial Segments except the last part of a segment must have a duration of at least 85% of PART-TARGET"))}}for(const e of n){const t=i.at(-1);null!==e.lastMSN&&void 0!==e.lastMSN||(e.lastMSN=t.mediaSequenceNumber),(null===e.lastPart||void 0===e.lastPart)&&t.parts.length>0&&(e.lastPart=t.parts.length-1)}}(s,l),s}function D(e,t,s,i,n){const{discontinuity:a,key:o,map:T,byterange:u,uri:E}=t;if(a&&(t.discontinuitySequence=s+1),o||(t.key=i),T||(t.map=n),u&&-1===u.offset){const{segments:t}=e;if(t.length>0){const e=t.at(-1);e.byterange&&e.uri===E?u.offset=e.byterange.offset+e.byterange.length:r.INVALIDPLAYLIST("If offset of EXT-X-BYTERANGE is not present, a previous Media Segment MUST be a sub-range of the same media resource")}else r.INVALIDPLAYLIST("If offset of EXT-X-BYTERANGE is not present, a previous Media Segment MUST appear in the Playlist file")}return e.segments.push(t),[t.discontinuitySequence,t.key,t.map]}function L(e,t){const[s,i]=function(e){const t=e.indexOf(":");return-1===t?[e.slice(1).trim(),null]:[e.slice(1,t).trim(),e.slice(t+1).trim()]}(e),n=function(e){switch(e){case"EXTM3U":case"EXT-X-VERSION":return"Basic";case"EXTINF":case"EXT-X-BYTERANGE":case"EXT-X-DISCONTINUITY":case"EXT-X-PREFETCH-DISCONTINUITY":case"EXT-X-KEY":case"EXT-X-MAP":case"EXT-X-PROGRAM-DATE-TIME":case"EXT-X-DATERANGE":case"EXT-X-CUE-OUT":case"EXT-X-CUE-IN":case"EXT-X-CUE-OUT-CONT":case"EXT-X-CUE":case"EXT-OATCLS-SCTE35":case"EXT-X-ASSET":case"EXT-X-SCTE35":case"EXT-X-PART":case"EXT-X-PRELOAD-HINT":return"Segment";case"EXT-X-TARGETDURATION":case"EXT-X-MEDIA-SEQUENCE":case"EXT-X-DISCONTINUITY-SEQUENCE":case"EXT-X-ENDLIST":case"EXT-X-PLAYLIST-TYPE":case"EXT-X-I-FRAMES-ONLY":case"EXT-X-SERVER-CONTROL":case"EXT-X-PART-INF":case"EXT-X-PREFETCH":case"EXT-X-RENDITION-REPORT":case"EXT-X-SKIP":return"MediaPlaylist";case"EXT-X-MEDIA":case"EXT-X-STREAM-INF":case"EXT-X-I-FRAME-STREAM-INF":case"EXT-X-SESSION-DATA":case"EXT-X-SESSION-KEY":return"MasterPlaylist";case"EXT-X-INDEPENDENT-SEGMENTS":case"EXT-X-START":return"MediaorMasterPlaylist";default:return"Unknown"}}(s);if(function(e,t){if("Segment"===e||"MediaPlaylist"===e)return void 0===t.isMasterPlaylist?void(t.isMasterPlaylist=!1):void(t.isMasterPlaylist&&N());if("MasterPlaylist"===e){if(void 0===t.isMasterPlaylist)return void(t.isMasterPlaylist=!0);!1===t.isMasterPlaylist&&N()}}(n,t),"Unknown"===n)return null;"MediaPlaylist"===n&&"EXT-X-RENDITION-REPORT"!==s&&"EXT-X-PREFETCH"!==s&&(t.hash[s]&&r.INVALIDPLAYLIST("There MUST NOT be more than one Media Playlist tag of each type in any Media Playlist"),t.hash[s]=!0);const[a,o]=function(e,t){switch(e){case"EXTM3U":case"EXT-X-DISCONTINUITY":case"EXT-X-ENDLIST":case"EXT-X-I-FRAMES-ONLY":case"EXT-X-INDEPENDENT-SEGMENTS":case"EXT-X-CUE-IN":return[null,null];case"EXT-X-VERSION":case"EXT-X-TARGETDURATION":case"EXT-X-MEDIA-SEQUENCE":case"EXT-X-DISCONTINUITY-SEQUENCE":return[r.toNumber(t),null];case"EXT-X-CUE-OUT":return Number.isNaN(Number(t))?[null,h(t)]:[r.toNumber(t),null];case"EXT-X-KEY":case"EXT-X-MAP":case"EXT-X-DATERANGE":case"EXT-X-MEDIA":case"EXT-X-STREAM-INF":case"EXT-X-I-FRAME-STREAM-INF":case"EXT-X-SESSION-DATA":case"EXT-X-SESSION-KEY":case"EXT-X-START":case"EXT-X-SERVER-CONTROL":case"EXT-X-PART-INF":case"EXT-X-PART":case"EXT-X-PRELOAD-HINT":case"EXT-X-RENDITION-REPORT":case"EXT-X-SKIP":return[null,h(t)];case"EXTINF":return[u(t),null];case"EXT-X-BYTERANGE":return[E(t),null];case"EXT-X-PROGRAM-DATE-TIME":return[new Date(t),null];default:return[t,null]}}(s,i);return{name:s,category:n,value:a,attributes:o}}function m(e,t){let s;return t.isMasterPlaylist?s=function(e,t){const s=new o.MasterPlaylist;let i=!1;for(const[n,{name:a,value:T,attributes:u}]of e.entries())if("EXT-X-VERSION"===a)s.version=T;else if("EXT-X-STREAM-INF"===a){const a=e[n+1];("string"!=typeof a||a.startsWith("#EXT"))&&r.INVALIDPLAYLIST("EXT-X-STREAM-INF must be followed by a URI line");const o=S(e,u,a,!1,t);o&&("number"==typeof o.score&&(i=!0,o.score<0&&r.INVALIDPLAYLIST("SCORE attribute on EXT-X-STREAM-INF must be positive decimal-floating-point number.")),s.variants.push(o))}else if("EXT-X-I-FRAME-STREAM-INF"===a){const i=S(e,u,u.URI,!0,t);i&&s.variants.push(i)}else if("EXT-X-SESSION-DATA"===a){const e=new o.SessionData({id:u["DATA-ID"],value:u.VALUE,uri:u.URI,language:u.LANGUAGE});s.sessionDataList.some((t=>t.id===e.id&&t.language===e.language))&&r.INVALIDPLAYLIST("A Playlist MUST NOT contain more than one EXT-X-SESSION-DATA tag with the same DATA-ID attribute and the same LANGUAGE attribute."),s.sessionDataList.push(e)}else if("EXT-X-SESSION-KEY"===a){"NONE"===u.METHOD&&r.INVALIDPLAYLIST("EXT-X-SESSION-KEY: The value of the METHOD attribute MUST NOT be NONE");const e=new o.Key({method:u.METHOD,uri:u.URI,iv:u.IV,format:u.KEYFORMAT,formatVersion:u.KEYFORMATVERSIONS});s.sessionKeyList.some((t=>p(t,e)))&&r.INVALIDPLAYLIST("A Master Playlist MUST NOT contain more than one 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t=[];t.push(`URI="${s.uri}"`,`LAST-MSN=${s.lastMSN}`),void 0!==s.lastPart&&t.push(`LAST-PART=${s.lastPart}`),e.push(`#EXT-X-RENDITION-REPORT:${t.join(",")}`)}}(t,e),t.join("\n")}},676:function(e,t,s){var i=this&&this.__createBinding||(Object.create?function(e,t,s,i){void 0===i&&(i=s);var n=Object.getOwnPropertyDescriptor(t,s);n&&!("get"in n?!t.__esModule:n.writable||n.configurable)||(n={enumerable:!0,get:function(){return t[s]}}),Object.defineProperty(e,i,n)}:function(e,t,s,i){void 0===i&&(i=s),e[i]=t[s]}),n=this&&this.__setModuleDefault||(Object.create?function(e,t){Object.defineProperty(e,"default",{enumerable:!0,value:t})}:function(e,t){e.default=t}),a=this&&this.__importStar||function(e){if(e&&e.__esModule)return e;var t={};if(null!=e)for(var s in e)"default"!==s&&Object.prototype.hasOwnProperty.call(e,s)&&i(t,e,s);return 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0!==s&&s,u=t.start,l=t.source;return h(this,n),r=e.call(this,"playlist"),A.PARAMCHECK(a),r.isMasterPlaylist=a,r.uri=i,r.version=o,r.independentSegments=c,r.start=u,r.source=l,r}return f(n)}(R);e.Playlist=b;var g=function(t){s(n,t);var e=u(n);function n(){var t,r=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};h(this,n),t=e.call(this,i(i({},r),{},{isMasterPlaylist:!0}));var a=r.variants,o=void 0===a?[]:a,s=r.currentVariant,c=r.sessionDataList,u=void 0===c?[]:c,l=r.sessionKeyList,T=void 0===l?[]:l;return t.variants=o,t.currentVariant=s,t.sessionDataList=u,t.sessionKeyList=T,t}return f(n)}(b);e.MasterPlaylist=g;var P=function(t){s(n,t);var e=u(n);function n(){var t,r=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};h(this,n),t=e.call(this,i(i({},r),{},{isMasterPlaylist:!1}));var a=r.targetDuration,o=r.mediaSequenceBase,s=void 0===o?0:o,c=r.discontinuitySequenceBase,u=void 0===c?0:c,l=r.endlist,T=void 0!==l&&l,f=r.playlistType,E=r.isIFrame,p=r.segments,I=void 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h(this,n),(r=e.call(this,"segment")).uri=a,r.mimeType=i,r.data=o,r.duration=s,r.title=c,r.byterange=u,r.discontinuity=l,r.mediaSequenceNumber=f,r.discontinuitySequence=p,r.key=I,r.map=d,r.programDateTime=A,r.dateRange=y,r.markers=v,r.parts=m,r}return f(n)}(R);e.Segment=D;var L=function(t){s(n,t);var e=u(n);function n(t){var r,a=t.hint,i=void 0!==a&&a,o=t.uri,s=t.duration,c=t.independent,u=t.byterange,l=t.gap;return h(this,n),r=e.call(this,"part"),A.PARAMCHECK(o),r.hint=i,r.uri=o,r.duration=s,r.independent=c,r.duration=s,r.byterange=u,r.gap=l,r}return f(n)}(R);e.PartialSegment=L;var C=function(t){s(n,t);var e=u(n);function n(t){var r,a=t.uri,i=t.discontinuity,o=t.mediaSequenceNumber,s=void 0===o?0:o,c=t.discontinuitySequence,u=void 0===c?0:c,l=t.key;return h(this,n),r=e.call(this,"prefetch"),A.PARAMCHECK(a),r.uri=a,r.discontinuity=i,r.mediaSequenceNumber=s,r.discontinuitySequence=u,r.key=l,r}return f(n)}(R);e.PrefetchSegment=C;var M=f((function t(e){var n=e.uri,r=e.lastMSN,a=e.lastPart;h(this,t),A.PARAMCHECK(n),this.uri=n,this.lastMSN=r,this.lastPart=a}));e.RenditionReport=M},771:(t,e)=>{function n(t,e){return function(t){if(Array.isArray(t))return t}(t)||function(t,e){var n=null==t?null:"undefined"!=typeof Symbol&&t[Symbol.iterator]||t["@@iterator"];if(null!=n){var r,a,i,o,s=[],c=!0,u=!1;try{if(i=(n=n.call(t)).next,0===e){if(Object(n)!==n)return;c=!1}else for(;!(c=(r=i.call(n)).done)&&(s.push(r.value),s.length!==e);c=!0);}catch(t){u=!0,a=t}finally{try{if(!c&&null!=n.return&&(o=n.return(),Object(o)!==o))return}finally{if(u)throw a}}return s}}(t,e)||a(t,e)||function(){throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.")}()}function r(t,e){var n="undefined"!=typeof Symbol&&t[Symbol.iterator]||t["@@iterator"];if(!n){if(Array.isArray(t)||(n=a(t))||e&&t&&"number"==typeof t.length){n&&(t=n);var 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r}Object.defineProperty(e,"__esModule",{value:!0}),e.getOptions=e.setOptions=e.hasOwnProp=e.formatDate=e.camelify=e.splitByCommaWithPreservingQuotes=e.trim=e.splitAt=e.tryCatch=e.byteSequenceToHex=e.hexToByteSequence=e.toNumber=e.INVALIDPLAYLIST=e.CONDITIONALPARAMCHECK=e.PARAMCHECK=e.CONDITIONALASSERT=e.ASSERT=e.THROW=void 0;var o={};function s(t){if(o.strictMode)throw t;o.silent||console.error(t.message)}function c(t){var e=arguments.length>1&&void 0!==arguments[1]?arguments[1]:10;if("number"==typeof t)return t;var n=10===e?Number.parseFloat(t):Number.parseInt(t,e);return Number.isNaN(n)?0:n}e.THROW=s,e.ASSERT=function(t){for(var e=arguments.length,a=new Array(e>1?e-1:0),i=1;i<e;i++)a[i-1]=arguments[i];var o,c=r(a.entries());try{for(c.s();!(o=c.n()).done;){var u=n(o.value,2),l=u[0];u[1]||s(new Error("".concat(t," : Failed at [").concat(l,"]")))}}catch(t){c.e(t)}finally{c.f()}},e.CONDITIONALASSERT=function(){for(var t=arguments.length,e=new Array(t),a=0;a<t;a++)e[a]=arguments[a];var i,o=r(e.entries());try{for(o.s();!(i=o.n()).done;){var c=n(i.value,2),u=c[0],l=n(c[1],2),T=l[0],f=l[1];T&&(f||s(new Error("Conditional Assert : Failed at [".concat(u,"]"))))}}catch(t){o.e(t)}finally{o.f()}},e.PARAMCHECK=function(){for(var t=arguments.length,e=new Array(t),a=0;a<t;a++)e[a]=arguments[a];var i,o=r(e.entries());try{for(o.s();!(i=o.n()).done;){var c=n(i.value,2),u=c[0];void 0===c[1]&&s(new Error("Param Check : Failed at [".concat(u,"]")))}}catch(t){o.e(t)}finally{o.f()}},e.CONDITIONALPARAMCHECK=function(){for(var t=arguments.length,e=new Array(t),a=0;a<t;a++)e[a]=arguments[a];var i,o=r(e.entries());try{for(o.s();!(i=o.n()).done;){var c=n(i.value,2),u=c[0],l=n(c[1],2),T=l[0],f=l[1];T&&(void 0===f&&s(new Error("Conditional Param Check : Failed at [".concat(u,"]"))))}}catch(t){o.e(t)}finally{o.f()}},e.INVALIDPLAYLIST=function(t){s(new Error("Invalid Playlist : ".concat(t)))},e.toNumber=c,e.hexToByteSequence=function(t){(t.startsWith("0x")||t.startsWith("0X"))&&(t=t.slice(2));for(var e=[],n=0;n<t.length;n+=2)e.push(c(t.slice(n,n+2),16));return Buffer.from(e)},e.byteSequenceToHex=function(t){var e=arguments.length>1&&void 0!==arguments[1]?arguments[1]:0,n=arguments.length>2&&void 0!==arguments[2]?arguments[2]:t.length;n<=e&&s(new Error("end must be larger than start : start=".concat(e,", end=").concat(n)));for(var r=[],a=e;a<n;a++)r.push("0".concat((255&t[a]).toString(16).toUpperCase()).slice(-2));return"0x".concat(r.join(""))},e.tryCatch=function(t,e){try{return t()}catch(t){return e(t)}},e.splitAt=function(t,e){for(var n=arguments.length>2&&void 0!==arguments[2]?arguments[2]:0,r=-1,a=0,i=0;a<t.length;a++)if(t[a]===e){if(i++===n)return[t.slice(0,a),t.slice(a+1)];r=a}return-1!==r?[t.slice(0,r),t.slice(r+1)]:[t]},e.trim=function(t){var e=arguments.length>1&&void 0!==arguments[1]?arguments[1]:" ";return t?(t=t.trim()," "===e||(t.startsWith(e)&&(t=t.slice(1)),t.endsWith(e)&&(t=t.slice(0,-1))),t):t},e.splitByCommaWithPreservingQuotes=function(t){for(var e=[],n=!0,r=0,a=[],i=0;i<t.length;i++){var o=t[i];n&&","===o?(e.push(t.slice(r,i).trim()),r=i+1):'"'!==o&&"'"!==o||(n?(a.push(o),n=!1):o===a.at(-1)?(a.pop(),n=!0):a.push(o))}return e.push(t.slice(r).trim()),e},e.camelify=function(t){var e,n=[],a=!1,i=r(t);try{for(i.s();!(e=i.n()).done;){var o=e.value;"-"!==o&&"_"!==o?a?(n.push(o.toUpperCase()),a=!1):n.push(o.toLowerCase()):a=!0}}catch(t){i.e(t)}finally{i.f()}return n.join("")},e.formatDate=function(t){var e=t.getUTCFullYear(),n=("0"+(t.getUTCMonth()+1)).slice(-2),r=("0"+t.getUTCDate()).slice(-2),a=("0"+t.getUTCHours()).slice(-2),i=("0"+t.getUTCMinutes()).slice(-2),o=("0"+t.getUTCSeconds()).slice(-2),s=("00"+t.getUTCMilliseconds()).slice(-3);return"".concat(e,"-").concat(n,"-").concat(r,"T").concat(a,":").concat(i,":").concat(o,".").concat(s,"Z")},e.hasOwnProp=function(t,e){return Object.hasOwnProperty.call(t,e)},e.setOptions=function(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};o=Object.assign(o,t)},e.getOptions=function(){return Object.assign({},o)}},492:function(t,e,n){var r=this&&this.__createBinding||(Object.create?function(t,e,n,r){void 0===r&&(r=n);var a=Object.getOwnPropertyDescriptor(e,n);a&&!("get"in a?!e.__esModule:a.writable||a.configurable)||(a={enumerable:!0,get:function(){return e[n]}}),Object.defineProperty(t,r,a)}:function(t,e,n,r){void 0===r&&(r=n),t[r]=e[n]}),a=this&&this.__setModuleDefault||(Object.create?function(t,e){Object.defineProperty(t,"default",{enumerable:!0,value:e})}:function(t,e){t.default=e}),i=this&&this.__importStar||function(t){if(t&&t.__esModule)return t;var e={};if(null!=t)for(var n in t)"default"!==n&&Object.prototype.hasOwnProperty.call(t,n)&&r(e,t,n);return a(e,t),e},o=this&&this.__importDefault||function(t){return t&&t.__esModule?t:{default:t}};Object.defineProperty(e,"__esModule",{value:!0}),e.setOptions=e.getOptions=e.types=e.stringify=e.parse=void 0;const s=n(771);Object.defineProperty(e,"getOptions",{enumerable:!0,get:function(){return s.getOptions}}),Object.defineProperty(e,"setOptions",{enumerable:!0,get:function(){return s.setOptions}});const c=o(n(463));e.parse=c.default;const u=o(n(367));e.stringify=u.default;const l=i(n(890));e.types=l}},e={};var n=function n(r){var a=e[r];if(void 0!==a)return a.exports;var i=e[r]={exports:{}};return t[r].call(i.exports,i,i.exports,n),i.exports}(492);return n})()));
 //# sourceMappingURL=hls-parser.min.js.map

package.json

 {
   "name": "hls-parser",
-  "version": "0.10.7",
+  "version": "0.10.8",
   "description": "A simple library to read/write HLS playlists",
@@ -33,5 +33,5 @@ "main": "index.js",
     "@ava/typescript": "^4.1.0",
-    "@babel/core": "^7.22.11",
-    "@babel/eslint-parser": "^7.22.11",
-    "@babel/preset-env": "^7.22.10",
+    "@babel/core": "^7.23.0",
+    "@babel/eslint-parser": "^7.22.15",
+    "@babel/preset-env": "^7.22.20",
     "@tsconfig/node16": "^16.1.1",
@@ -43,3 +43,3 @@ "ava": "^5.3.1",
     "terser-webpack-plugin": "^5.3.9",
-    "ts-loader": "^9.4.4",
+    "ts-loader": "^9.5.0",
     "typescript": "^5.2.2",
@@ -108,2 +108,3 @@ "webpack": "^5.88.2",
           "@typescript-eslint/comma-dangle": 0,
+          "@typescript-eslint/consistent-type-imports": 0,
           "@typescript-eslint/dot-notation": 0,
@@ -110,0 +111,0 @@ "@typescript-eslint/member-delimiter-style": 0,

parse.js

@@ -805,2 +805,3 @@ "use strict";
             }
+            // @ts-expect-error TODO check if this is not a bug the third argument should be a discontinuitySequence
             addSegment(playlist, segment, currentKey, currentMap);
@@ -883,3 +884,3 @@ if (!containsParts && segment.parts.length > 0) {
             }
-            else {
+            else if (dateRange.classId) {
                 rangeList.set(dateRange.classId, [{ start, end }]);
@@ -886,0 +887,0 @@ }

parse.ts

@@ -8,2 +8,3 @@ import * as utils from './utils';
   MediaInitializationSection,
+  Byterange,
   DateRange,
@@ -19,7 +20,9 @@ SpliceInfo,
 
-function unquote(str) {
+function unquote(str: string | undefined) {
   return utils.trim(str, '"');
 }
 
-function getTagCategory(tagName) {
+type TagCategory = 'Basic' | 'Segment' | 'MasterPlaylist' | 'MediaPlaylist' | 'MediaorMasterPlaylist' | 'Unknown';
+
+function getTagCategory(tagName: string): TagCategory {
   switch (tagName) {
@@ -73,8 +76,8 @@ case 'EXTM3U':
 
-function parseEXTINF(param) {
-  const pair = utils.splitAt(param, ',');
+function parseEXTINF(param: string) {
+  const pair = utils.splitAt(param, ',') as [string, string];
   return {duration: utils.toNumber(pair[0]), title: decodeURIComponent(escape(pair[1]))};
 }
 
-function parseBYTERANGE(param) {
+function parseBYTERANGE(param: string): Byterange {
   const pair = utils.splitAt(param, '@');
@@ -84,8 +87,8 @@ return {length: utils.toNumber(pair[0]), offset: pair[1] ? utils.toNumber(pair[1]) : -1};
 
-function parseResolution(str) {
-  const pair = utils.splitAt(str, 'x');
+function parseResolution(str: string) {
+  const pair = utils.splitAt(str, 'x') as [string, string];
   return {width: utils.toNumber(pair[0]), height: utils.toNumber(pair[1])};
 }
 
-function parseAllowedCpc(str) {
+function parseAllowedCpc(str: string) {
   const message = 'ALLOWED-CPC: Each entry must consit of KEYFORMAT and Content Protection Configuration';
@@ -96,3 +99,3 @@ const list = str.split(',');
   }
-  const allowedCpcList: {format; cpcList}[] = [];
+  const allowedCpcList: {format: string; cpcList: string[]}[] = [];
   for (const item of list) {
@@ -109,3 +112,3 @@ const [format, cpcText] = utils.splitAt(item, ':');
 
-function parseIV(str) {
+function parseIV(str: string): Buffer {
   const iv = utils.hexToByteSequence(str);
@@ -118,3 +121,3 @@ if (iv.length !== 16) {
 
-function parseUserAttribute(str) {
+function parseUserAttribute(str: string) {
   if (str.startsWith('"')) {
@@ -129,3 +132,3 @@ return unquote(str);
 
-function setCompatibleVersionOfKey(params, attributes) {
+function setCompatibleVersionOfKey(params: Record<string, any>, attributes: Record<string, any>) {
   if (attributes['IV'] && params.compatibleVersion < 2) {
@@ -143,3 +146,3 @@ params.compatibleVersion = 2;
     const [key, value] = utils.splitAt(item, '=');
-    const val = unquote(value);
+    const val = unquote(value)!;
     switch (key) {
@@ -198,3 +201,3 @@ case 'URI':
         } else if (key.startsWith('X-')) {
-          attributes[key] = parseUserAttribute(value);
+          attributes[key] = parseUserAttribute(value!);
         } else {
@@ -266,3 +269,3 @@ if (key === 'VIDEO-RANGE' && val !== 'SDR' && val !== 'HLG' && val !== 'PQ') {
 
-function splitTag(line) {
+function splitTag(line: string): [string, string | null] {
   const index = line.indexOf(':');
@@ -275,3 +278,3 @@ if (index === -1) {
 
-function parseRendition({attributes}) {
+function parseRendition({attributes}: Tag): Rendition {
   const rendition = new Rendition({
@@ -374,3 +377,3 @@ type: attributes['TYPE'],
 
-function sameKey(key1, key2) {
+function sameKey(key1: Key, key2: Key) {
   if (key1.method !== key2.method) {
@@ -406,6 +409,6 @@ return false;
 
-function parseMasterPlaylist(lines, params) {
+function parseMasterPlaylist(lines: Line[], params: Record<string, any>): MasterPlaylist {
   const playlist = new MasterPlaylist();
   let variantIsScored = false;
-  for (const [index, {name, value, attributes}] of lines.entries()) {
+  for (const [index, {name, value, attributes}] of (lines as Tag[]).entries()) {
     if (name === 'EXT-X-VERSION') {
@@ -492,3 +495,3 @@ playlist.version = value;
 
-function parseSegment(lines, uri, start, end, mediaSequenceNumber, discontinuitySequence, params) {
+function parseSegment(lines: Line[], uri: string, start: number, end: number, mediaSequenceNumber: number, discontinuitySequence: number, params: Record<string, any>) {
   const segment = new Segment({uri, mediaSequenceNumber, discontinuitySequence});
@@ -498,3 +501,3 @@ let mapHint = false;
   for (let i = start; i <= end; i++) {
-    const {name, value, attributes} = lines[i];
+    const {name, value, attributes} = lines[i] as Tag;
     if (name === 'EXTINF') {
@@ -546,3 +549,3 @@ if (!Number.isInteger(value.duration) && params.compatibleVersion < 3) {
     } else if (name === 'EXT-X-DATERANGE') {
-      const attrs = {};
+      const attrs: Record<string, any> = {};
       for (const key of Object.keys(attributes)) {
@@ -622,6 +625,6 @@ if (key.startsWith('SCTE35-') || key.startsWith('X-')) {
 
-function parsePrefetchSegment(lines, uri, start, end, mediaSequenceNumber, discontinuitySequence, params) {
+function parsePrefetchSegment(lines: Line[], uri: any, start: number, end: number, mediaSequenceNumber: number, discontinuitySequence: number, params: Record<string, any>) {
   const segment = new PrefetchSegment({uri, mediaSequenceNumber, discontinuitySequence});
   for (let i = start; i <= end; i++) {
-    const {name, attributes} = lines[i];
+    const {name, attributes} = lines[i] as Tag;
     if (name === 'EXTINF') {
@@ -649,3 +652,3 @@ utils.INVALIDPLAYLIST('A prefetch segment must not be advertised with an EXTINF tag.');
 
-function parseMediaPlaylist(lines, params) {
+function parseMediaPlaylist(lines: Line[], params: Record<string, any>) {
   const playlist = new MediaPlaylist();
@@ -661,3 +664,3 @@ let segmentStart = -1;
   for (const [index, line] of lines.entries()) {
-    const {name, value, attributes, category} = line;
+    const {name, value, attributes, category} = line as Tag;
     if (category === 'Segment') {
@@ -780,3 +783,3 @@ if (segmentStart === -1) {
       if (segment) {
-        [discontinuitySequence, currentKey, currentMap] = addSegment(playlist, segment, discontinuitySequence, currentKey, currentMap);
+        [discontinuitySequence, currentKey, currentMap] = addSegment(playlist, segment, discontinuitySequence, currentKey!, currentMap!);
         if (!containsParts && segment.parts.length > 0) {
@@ -796,2 +799,3 @@ containsParts = true;
       }
+      // @ts-expect-error TODO check if this is not a bug the third argument should be a discontinuitySequence
       addSegment(playlist, segment, currentKey, currentMap);
@@ -810,3 +814,3 @@ if (!containsParts && segment.parts.length > 0) {
 
-function addSegment(playlist, segment, discontinuitySequence, currentKey, currentMap?: any) {
+function addSegment(playlist: MediaPlaylist, segment: Segment, discontinuitySequence: number, currentKey?: Key, currentMap?: MediaInitializationSection): [number, Key, MediaInitializationSection] {
   const {discontinuity, key, map, byterange, uri} = segment;
@@ -820,3 +824,3 @@ if (discontinuity) {
   if (!map) {
-    segment.map = currentMap;
+    segment.map = currentMap!;
   }
@@ -826,3 +830,3 @@ if (byterange && byterange.offset === -1) {
     if (segments.length > 0) {
-      const prevSegment = segments.at(-1);
+      const prevSegment = segments.at(-1)!;
       if (prevSegment.byterange && prevSegment.uri === uri) {
@@ -838,6 +842,6 @@ byterange.offset = prevSegment.byterange.offset + prevSegment.byterange.length;
   playlist.segments.push(segment);
-  return [segment.discontinuitySequence, segment.key, segment.map];
+  return [segment.discontinuitySequence, segment.key!, segment.map];
 }
 
-function checkDateRange(segments) {
+function checkDateRange(segments: Segment[]) {
   const earliestDates = new Map();
@@ -877,3 +881,3 @@ const rangeList = new Map();
         range.push({start, end});
-      } else {
+      } else if (dateRange.classId) {
         rangeList.set(dateRange.classId, [{start, end}]);
@@ -935,3 +939,3 @@ }
 
-function CHECKTAGCATEGORY(category, params) {
+function CHECKTAGCATEGORY(category: TagCategory, params: Record<string, any>) {
   if (category === 'Segment' || category === 'MediaPlaylist') {
@@ -959,3 +963,10 @@ if (params.isMasterPlaylist === undefined) {
 
-function parseTag(line, params) {
+type Tag = {
+  name: string;
+  category: TagCategory;
+  value: any;
+  attributes: any;
+};
+
+function parseTag(line: string, params: Record<string, any>): Tag | null {
   const [name, param] = splitTag(line);
@@ -977,4 +988,6 @@ const category = getTagCategory(name);
 
-function lexicalParse(text, params) {
-  const lines: any[] = [];
+type Line = string | Tag;
+
+function lexicalParse(text: string, params: Record<string, any>) {
+  const lines: Line[] = [];
   for (const l of text.split('\n')) {
@@ -1003,3 +1016,3 @@ // V8 has garbage collection issues when cleaning up substrings split from strings greater
   }
-  if (lines.length === 0 || lines[0].name !== 'EXTM3U') {
+  if (lines.length === 0 || (lines[0] as Tag).name !== 'EXTM3U') {
     utils.INVALIDPLAYLIST('The EXTM3U tag MUST be the first line.');
@@ -1010,3 +1023,3 @@ }
 
-function semanticParse(lines, params) {
+function semanticParse(lines: Line[], params: Record<string, any>) {
   let playlist;
@@ -1029,4 +1042,4 @@ if (params.isMasterPlaylist) {
 
-function parse(text) {
-  const params = {
+function parse(text: string): MasterPlaylist | MediaPlaylist {
+  const params: Record<string, any> = {
     version: undefined,
@@ -1033,0 +1046,0 @@ isMasterPlaylist: undefined,

stringify.js

@@ -369,3 +369,3 @@ "use strict";
     if (dateRange.end) {
-        attrs.push(`END-DATE="${dateRange.end}"`);
+        attrs.push(`END-DATE="${utils.formatDate(dateRange.end)}"`);
     }
@@ -372,0 +372,0 @@ if (dateRange.duration) {

stringify.ts

 import * as utils from './utils';
+import {
+  Byterange,
+  DateRange, Key,
+  MasterPlaylist,
+  MediaInitializationSection,
+  MediaPlaylist,
+  PartialSegment,
+  Rendition,
+  Segment,
+  SessionData,
+  SpliceInfo,
+  Variant
+} from './types';
 
@@ -18,6 +31,6 @@ const ALLOW_REDUNDANCY = [
 
-class LineArray extends Array {
-  baseUri: string;
+class LineArray extends Array<string> {
+  baseUri?: string;
 
-  constructor(baseUri) {
+  constructor(baseUri?: string) {
     super();
@@ -27,3 +40,3 @@ this.baseUri = baseUri;
 
-  override push(...elems) {
+  override push(...elems: string[]) {
     // redundancy check
@@ -60,3 +73,3 @@ for (const elem of elems) {
 
-function getNumberOfDecimalPlaces(num) {
+function getNumberOfDecimalPlaces(num: number) {
   const str = num.toString(10);
@@ -70,3 +83,3 @@ const index = str.indexOf('.');
 
-function buildMasterPlaylist(lines, playlist) {
+function buildMasterPlaylist(lines: LineArray, playlist: MasterPlaylist) {
   for (const sessionData of playlist.sessionDataList) {
@@ -83,3 +96,3 @@ lines.push(buildSessionData(sessionData));
 
-function buildSessionData(sessionData) {
+function buildSessionData(sessionData: SessionData) {
   const attrs = [`DATA-ID="${sessionData.id}"`];
@@ -97,3 +110,3 @@ if (sessionData.language) {
 
-function buildKey(key, isSessionKey?: any) {
+function buildKey(key: Key, isSessionKey?: any) {
   const name = isSessionKey ? '#EXT-X-SESSION-KEY' : '#EXT-X-KEY';
@@ -119,3 +132,3 @@ const attrs = [`METHOD=${key.method}`];
 
-function buildVariant(lines, variant) {
+function buildVariant(lines: LineArray, variant: Variant) {
   const name = variant.isIFrameOnly ? '#EXT-X-I-FRAME-STREAM-INF' : '#EXT-X-STREAM-INF';
@@ -192,3 +205,3 @@ const attrs = [`BANDWIDTH=${variant.bandwidth}`];
 
-function buildRendition(rendition) {
+function buildRendition(rendition: Rendition) {
   const attrs = [
@@ -229,3 +242,3 @@ `TYPE=${rendition.type}`,
 
-function buildMediaPlaylist(lines, playlist) {
+function buildMediaPlaylist(lines: LineArray, playlist: MediaPlaylist) {
   let lastKey = '';
@@ -305,3 +318,3 @@ let lastMap = '';
 
-function buildSegment(lines, segment, lastKey, lastMap, version = 1) {
+function buildSegment(lines: LineArray, segment: Segment, lastKey: string, lastMap: string, version = 1) {
   let hint = false;
@@ -351,3 +364,3 @@ let markerType = '';
 
-function buildMap(map) {
+function buildMap(map: MediaInitializationSection) {
   const attrs = [`URI="${map.uri}"`];
@@ -360,7 +373,7 @@ if (map.byterange) {
 
-function buildByteRange({offset, length}) {
+function buildByteRange({offset, length}: Byterange) {
   return `${length}@${offset}`;
 }
 
-function buildDateRange(dateRange) {
+function buildDateRange(dateRange: DateRange) {
   const attrs = [
@@ -373,3 +386,3 @@ `ID="${dateRange.id}"`
   if (dateRange.end) {
-    attrs.push(`END-DATE="${dateRange.end}"`);
+    attrs.push(`END-DATE="${utils.formatDate(dateRange.end)}"`);
   }
@@ -402,3 +415,3 @@ if (dateRange.duration) {
 
-function buildMarkers(lines, markers) {
+function buildMarkers(lines: LineArray, markers: SpliceInfo[]) {
   let type = '';
@@ -420,3 +433,3 @@ for (const marker of markers) {
 
-function buildParts(lines, parts) {
+function buildParts(lines: LineArray, parts: PartialSegment[]) {
   let hint = false;
@@ -454,3 +467,3 @@ for (const part of parts) {
 
-function stringify(playlist) {
+function stringify(playlist: MasterPlaylist | MediaPlaylist): string {
   utils.PARAMCHECK(playlist);
@@ -470,5 +483,5 @@ utils.ASSERT('Not a playlist', playlist.type === 'playlist');
   if (playlist.isMasterPlaylist) {
-    buildMasterPlaylist(lines, playlist);
+    buildMasterPlaylist(lines, playlist as MasterPlaylist);
   } else {
-    buildMediaPlaylist(lines, playlist);
+    buildMediaPlaylist(lines, playlist as MediaPlaylist);
   }
@@ -475,0 +488,0 @@ // console.log('<<<');

types.ts

 import * as utils from './utils';
 
+type RenditionType = 'AUDIO' | 'VIDEO' | 'SUBTITLES' | 'CLOSED-CAPTIONS';
+
 class Rendition {
-  type: string;
+  type: RenditionType;
   uri?: string;
@@ -53,3 +55,3 @@ groupId: string;
   averageBandwidth?: number;
-  score: any;
+  score: number;
   codecs?: string;
@@ -59,5 +61,5 @@ resolution?: { width: number; height: number };
   hdcpLevel?: string;
-  allowedCpc: any;
-  videoRange: any;
-  stableVariantId: any;
+  allowedCpc: { format: string, cpcList: string[] }[];
+  videoRange: 'SDR' | 'HLG' | 'PQ';
+  stableVariantId: string;
   programId: any;
@@ -159,3 +161,3 @@ audio: Rendition[];
 
-type Byterange = {
+export type Byterange = {
   length: number;
@@ -204,6 +206,6 @@ offset: number;
     attributes = {}
-  }: any) {
+  }: DateRange) {
     utils.PARAMCHECK(id);
     utils.CONDITIONALPARAMCHECK([endOnNext === true, classId]);
-    utils.CONDITIONALASSERT([end, start], [end, start <= end], [duration, duration >= 0], [plannedDuration, plannedDuration >= 0]);
+    utils.CONDITIONALASSERT([end, start], [end, start! <= end!], [duration, duration! >= 0], [plannedDuration, plannedDuration! >= 0]);
     this.id = id;
@@ -301,4 +303,11 @@ this.classId = classId;
 
+type LowLatencyCompatibility = {
+  canBlockReload: boolean,
+  canSkipUntil: number,
+  holdBack: number,
+  partHoldBack: number,
+};
+
 class MediaPlaylist extends Playlist {
-  targetDuration?: number;
+  targetDuration: number;
   mediaSequenceBase?: number;
@@ -311,3 +320,3 @@ discontinuitySequenceBase?: number;
   prefetchSegments: PrefetchSegment[];
-  lowLatencyCompatibility?: Record<string, any>;
+  lowLatencyCompatibility?: LowLatencyCompatibility;
   partTargetDuration?: number;
@@ -335,3 +344,3 @@ renditionReports: RenditionReport[];
     } = params;
-    this.targetDuration = targetDuration;
+    this.targetDuration = targetDuration!;
     this.mediaSequenceBase = mediaSequenceBase;
@@ -338,0 +347,0 @@ this.discontinuitySequenceBase = discontinuitySequenceBase;

utils.ts

@@ -20,3 +20,3 @@
 
-function ASSERT(msg, ...options) {
+function ASSERT(msg: string, ...options: boolean[]) {
   for (const [index, param] of options.entries()) {
@@ -59,3 +59,3 @@ if (!param) {
 
-function INVALIDPLAYLIST(msg) {
+function INVALIDPLAYLIST(msg: string) {
   THROW(new Error(`Invalid Playlist : ${msg}`));
@@ -75,3 +75,3 @@ }
 
-function hexToByteSequence(str) {
+function hexToByteSequence(str: string): Buffer {
   if (str.startsWith('0x') || str.startsWith('0X')) {
@@ -87,3 +87,3 @@ str = str.slice(2);
 
-function byteSequenceToHex(sequence, start = 0, end = sequence.length) {
+function byteSequenceToHex(sequence: Buffer, start = 0, end = sequence.length) {
   if (end <= start) {
@@ -99,3 +99,3 @@ THROW(new Error(`end must be larger than start : start=${start}, end=${end}`));
 
-function tryCatch(body, errorHandler) {
+function tryCatch<T>(body: () => T, errorHandler: (err: unknown) => T): T {
   try {
@@ -108,3 +108,3 @@ return body();
 
-function splitAt(str: string, delimiter, index = 0) {
+function splitAt(str: string, delimiter: string, index = 0): [string] | [string, string] {
   let lastDelimiterPos = -1;
@@ -125,3 +125,3 @@ for (let i = 0, j = 0; i < str.length; i++) {
 
-function trim(str: string, char = ' ') {
+function trim(str: string | undefined, char = ' ') {
   if (!str) {
@@ -200,11 +200,11 @@ return str;
 
-function hasOwnProp(obj, propName) {
+function hasOwnProp(obj: object, propName: string): boolean {
   return Object.hasOwnProperty.call(obj, propName);
 }
 
-function setOptions(newOptions = {}) {
+function setOptions(newOptions: Partial<Options> = {}): void {
   options = Object.assign(options, newOptions);
 }
 
-function getOptions() {
+function getOptions(): Options {
   return Object.assign({}, options);
@@ -211,0 +211,0 @@ }

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increased by12.17%

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increased by11.85%

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