@loaders.gl/flatgeobuf - npm Package Compare versions

Comparing version 3.0.0-beta.7 to 3.0.0-beta.8

dist/dist.es5.min.js

@@ -1,2 +0,2 @@
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s=this.bb.capacity()-t,r=s-this.bb.readInt32(s);if(0==this.bb.readInt16(r+e))throw new Error("FlatBuffers: field "+e+" must be set")}startVector(t,e,s){this.notNested(),this.vector_num_elems=e,this.prep(4,t*e),this.prep(s,t*e)}endVector(){return this.writeInt32(this.vector_num_elems),this.offset()}createSharedString(t){if(!t)return 0;if(this.string_maps||(this.string_maps=new Map),this.string_maps.has(t))return this.string_maps.get(t);const e=this.createString(t);return this.string_maps.set(t,e),e}createString(t){if(!t)return 0;let e;if(t instanceof Uint8Array)e=t;else{e=[];let s=0;for(;s<t.length;){let r;const i=t.charCodeAt(s++);r=i<55296||i>=56320?i:(i<<10)+t.charCodeAt(s++)+-56613888,r<128?e.push(r):(r<2048?e.push(r>>6&31|192):(r<65536?e.push(r>>12&15|224):e.push(r>>18&7|240,r>>12&63|128),e.push(r>>6&63|128)),e.push(63&r|128))}}this.addInt8(0),this.startVector(1,e.length,1),this.bb.setPosition(this.space-=e.length);for(let t=0,s=this.space,r=this.bb.bytes();t<e.length;t++)r[s++]=e[t];return this.endVector()}createLong(t,e){return b.create(t,e)}createObjectOffset(t){return null===t?0:"string"==typeof t?this.createString(t):t.pack(this)}createObjectOffsetList(t){const e=[];for(let s=0;s<t.length;++s){const r=t[s];if(null===r)throw new Error("FlatBuffers: Argument for createObjectOffsetList cannot contain null.");e.push(this.createObjectOffset(r))}return e}createStructOffsetList(t,e){return e(this,t.length),this.createObjectOffsetList(t),this.endVector()}}class l{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsColumn(t,e){return(e||new l).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsColumn(t,e){return t.setPosition(t.position()+4),(e||new l).__init(t.readInt32(t.position())+t.position(),t)}name(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.__string(this.bb_pos+e,t):null}type(){const 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startColumn(t){t.startObject(11)}static addName(t,e){t.addFieldOffset(0,e,0)}static addType(t,e){t.addFieldInt8(1,e,s.Byte)}static addTitle(t,e){t.addFieldOffset(2,e,0)}static addDescription(t,e){t.addFieldOffset(3,e,0)}static addWidth(t,e){t.addFieldInt32(4,e,-1)}static addPrecision(t,e){t.addFieldInt32(5,e,-1)}static addScale(t,e){t.addFieldInt32(6,e,-1)}static addNullable(t,e){t.addFieldInt8(7,+e,1)}static addUnique(t,e){t.addFieldInt8(8,+e,0)}static addPrimaryKey(t,e){t.addFieldInt8(9,+e,0)}static addMetadata(t,e){t.addFieldOffset(10,e,0)}static endColumn(t){const e=t.endObject();return t.requiredField(e,4),e}static createColumn(t,e,s,r,i,n,o,a,b,h,c,d){return l.startColumn(t),l.addName(t,e),l.addType(t,s),l.addTitle(t,r),l.addDescription(t,i),l.addWidth(t,n),l.addPrecision(t,o),l.addScale(t,a),l.addNullable(t,b),l.addUnique(t,h),l.addPrimaryKey(t,c),l.addMetadata(t,d),l.endColumn(t)}}class f{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsCrs(t,e){return(e||new f).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsCrs(t,e){return t.setPosition(t.position()+4),(e||new f).__init(t.readInt32(t.position())+t.position(),t)}org(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.__string(this.bb_pos+e,t):null}code(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.readInt32(this.bb_pos+t):0}name(t){const e=this.bb.__offset(this.bb_pos,8);return e?this.bb.__string(this.bb_pos+e,t):null}description(t){const e=this.bb.__offset(this.bb_pos,10);return e?this.bb.__string(this.bb_pos+e,t):null}wkt(t){const e=this.bb.__offset(this.bb_pos,12);return e?this.bb.__string(this.bb_pos+e,t):null}codeString(t){const e=this.bb.__offset(this.bb_pos,14);return e?this.bb.__string(this.bb_pos+e,t):null}static startCrs(t){t.startObject(6)}static addOrg(t,e){t.addFieldOffset(0,e,0)}static addCode(t,e){t.addFieldInt32(1,e,0)}static addName(t,e){t.addFieldOffset(2,e,0)}static addDescription(t,e){t.addFieldOffset(3,e,0)}static addWkt(t,e){t.addFieldOffset(4,e,0)}static addCodeString(t,e){t.addFieldOffset(5,e,0)}static endCrs(t){return t.endObject()}static createCrs(t,e,s,r,i,n,o){return f.startCrs(t),f.addOrg(t,e),f.addCode(t,s),f.addName(t,r),f.addDescription(t,i),f.addWkt(t,n),f.addCodeString(t,o),f.endCrs(t)}}!function(t){t[t.Unknown=0]="Unknown",t[t.Point=1]="Point",t[t.LineString=2]="LineString",t[t.Polygon=3]="Polygon",t[t.MultiPoint=4]="MultiPoint",t[t.MultiLineString=5]="MultiLineString",t[t.MultiPolygon=6]="MultiPolygon",t[t.GeometryCollection=7]="GeometryCollection",t[t.CircularString=8]="CircularString",t[t.CompoundCurve=9]="CompoundCurve",t[t.CurvePolygon=10]="CurvePolygon",t[t.MultiCurve=11]="MultiCurve",t[t.MultiSurface=12]="MultiSurface",t[t.Curve=13]="Curve",t[t.Surface=14]="Surface",t[t.PolyhedralSurface=15]="PolyhedralSurface",t[t.TIN=16]="TIN",t[t.Triangle=17]="Triangle"}(c||(c={}));class _{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsHeader(t,e){return(e||new _).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsHeader(t,e){return t.setPosition(t.position()+4),(e||new _).__init(t.readInt32(t.position())+t.position(),t)}name(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.__string(this.bb_pos+e,t):null}envelope(t){const e=this.bb.__offset(this.bb_pos,6);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}envelopeLength(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.__vector_len(this.bb_pos+t):0}envelopeArray(){const t=this.bb.__offset(this.bb_pos,6);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}geometryType(){const t=this.bb.__offset(this.bb_pos,8);return t?this.bb.readUint8(this.bb_pos+t):c.Unknown}hasZ(){const t=this.bb.__offset(this.bb_pos,10);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}hasM(){const t=this.bb.__offset(this.bb_pos,12);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}hasT(){const t=this.bb.__offset(this.bb_pos,14);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}hasTm(){const t=this.bb.__offset(this.bb_pos,16);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}columns(t,e){const s=this.bb.__offset(this.bb_pos,18);return s?(e||new l).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos+s)+4*t),this.bb):null}columnsLength(){const t=this.bb.__offset(this.bb_pos,18);return t?this.bb.__vector_len(this.bb_pos+t):0}featuresCount(){const t=this.bb.__offset(this.bb_pos,20);return t?this.bb.readUint64(this.bb_pos+t):this.bb.createLong(0,0)}indexNodeSize(){const t=this.bb.__offset(this.bb_pos,22);return t?this.bb.readUint16(this.bb_pos+t):16}crs(t){const e=this.bb.__offset(this.bb_pos,24);return e?(t||new f).__init(this.bb.__indirect(this.bb_pos+e),this.bb):null}title(t){const e=this.bb.__offset(this.bb_pos,26);return e?this.bb.__string(this.bb_pos+e,t):null}description(t){const e=this.bb.__offset(this.bb_pos,28);return e?this.bb.__string(this.bb_pos+e,t):null}metadata(t){const e=this.bb.__offset(this.bb_pos,30);return e?this.bb.__string(this.bb_pos+e,t):null}static startHeader(t){t.startObject(14)}static addName(t,e){t.addFieldOffset(0,e,0)}static addEnvelope(t,e){t.addFieldOffset(1,e,0)}static createEnvelopeVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addFloat64(e[s]);return t.endVector()}static startEnvelopeVector(t,e){t.startVector(8,e,8)}static addGeometryType(t,e){t.addFieldInt8(2,e,c.Unknown)}static addHasZ(t,e){t.addFieldInt8(3,+e,0)}static addHasM(t,e){t.addFieldInt8(4,+e,0)}static addHasT(t,e){t.addFieldInt8(5,+e,0)}static addHasTm(t,e){t.addFieldInt8(6,+e,0)}static addColumns(t,e){t.addFieldOffset(7,e,0)}static createColumnsVector(t,e){t.startVector(4,e.length,4);for(let s=e.length-1;s>=0;s--)t.addOffset(e[s]);return t.endVector()}static startColumnsVector(t,e){t.startVector(4,e,4)}static addFeaturesCount(t,e){t.addFieldInt64(8,e,t.createLong(0,0))}static addIndexNodeSize(t,e){t.addFieldInt16(9,e,16)}static addCrs(t,e){t.addFieldOffset(10,e,0)}static addTitle(t,e){t.addFieldOffset(11,e,0)}static addDescription(t,e){t.addFieldOffset(12,e,0)}static addMetadata(t,e){t.addFieldOffset(13,e,0)}static endHeader(t){return t.endObject()}static finishHeaderBuffer(t,e){t.finish(e)}static finishSizePrefixedHeaderBuffer(t,e){t.finish(e,void 0,!0)}}class p{constructor(t,e,s,r,i,n,o,a){this.geometryType=t,this.columns=e,this.featuresCount=s,this.indexNodeSize=r,this.crs=i,this.title=n,this.description=o,this.metadata=a}static fromByteBuffer(t){const s=_.getRootAsHeader(t),i=s.featuresCount().toFloat64(),n=s.indexNodeSize(),o=[];for(let t=0;t<s.columnsLength();t++){const r=s.columns(t);if(!r)throw new Error("Column unexpectedly missing");if(!r.name())throw new Error("Column name unexpectedly missing");o.push(new e(r.name(),r.type(),r.title(),r.description(),r.width(),r.precision(),r.scale(),r.nullable(),r.unique(),r.primaryKey()))}const a=s.crs(),b=a?new r(a.org(),a.code(),a.name(),a.description(),a.wkt(),a.codeString()):null;return new p(s.geometryType(),o,i,n,b,s.title(),s.description(),s.metadata())}}class g{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsGeometry(t,e){return(e||new g).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsGeometry(t,e){return t.setPosition(t.position()+4),(e||new g).__init(t.readInt32(t.position())+t.position(),t)}ends(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.readUint32(this.bb.__vector(this.bb_pos+e)+4*t):0}endsLength(){const t=this.bb.__offset(this.bb_pos,4);return t?this.bb.__vector_len(this.bb_pos+t):0}endsArray(){const t=this.bb.__offset(this.bb_pos,4);return t?new Uint32Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}xy(t){const e=this.bb.__offset(this.bb_pos,6);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}xyLength(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.__vector_len(this.bb_pos+t):0}xyArray(){const t=this.bb.__offset(this.bb_pos,6);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}z(t){const e=this.bb.__offset(this.bb_pos,8);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}zLength(){const t=this.bb.__offset(this.bb_pos,8);return t?this.bb.__vector_len(this.bb_pos+t):0}zArray(){const t=this.bb.__offset(this.bb_pos,8);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}m(t){const e=this.bb.__offset(this.bb_pos,10);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}mLength(){const t=this.bb.__offset(this.bb_pos,10);return t?this.bb.__vector_len(this.bb_pos+t):0}mArray(){const t=this.bb.__offset(this.bb_pos,10);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}t(t){const e=this.bb.__offset(this.bb_pos,12);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}tLength(){const t=this.bb.__offset(this.bb_pos,12);return t?this.bb.__vector_len(this.bb_pos+t):0}tArray(){const t=this.bb.__offset(this.bb_pos,12);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}tm(t){const e=this.bb.__offset(this.bb_pos,14);return e?this.bb.readUint64(this.bb.__vector(this.bb_pos+e)+8*t):this.bb.createLong(0,0)}tmLength(){const t=this.bb.__offset(this.bb_pos,14);return t?this.bb.__vector_len(this.bb_pos+t):0}type(){const t=this.bb.__offset(this.bb_pos,16);return t?this.bb.readUint8(this.bb_pos+t):c.Unknown}parts(t,e){const s=this.bb.__offset(this.bb_pos,18);return s?(e||new g).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos+s)+4*t),this.bb):null}partsLength(){const t=this.bb.__offset(this.bb_pos,18);return t?this.bb.__vector_len(this.bb_pos+t):0}static startGeometry(t){t.startObject(8)}static addEnds(t,e){t.addFieldOffset(0,e,0)}static createEndsVector(t,e){t.startVector(4,e.length,4);for(let s=e.length-1;s>=0;s--)t.addInt32(e[s]);return t.endVector()}static startEndsVector(t,e){t.startVector(4,e,4)}static addXy(t,e){t.addFieldOffset(1,e,0)}static createXyVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addFloat64(e[s]);return t.endVector()}static startXyVector(t,e){t.startVector(8,e,8)}static addZ(t,e){t.addFieldOffset(2,e,0)}static createZVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addFloat64(e[s]);return t.endVector()}static startZVector(t,e){t.startVector(8,e,8)}static addM(t,e){t.addFieldOffset(3,e,0)}static createMVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addFloat64(e[s]);return t.endVector()}static startMVector(t,e){t.startVector(8,e,8)}static addT(t,e){t.addFieldOffset(4,e,0)}static createTVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addFloat64(e[s]);return t.endVector()}static startTVector(t,e){t.startVector(8,e,8)}static addTm(t,e){t.addFieldOffset(5,e,0)}static createTmVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addInt64(e[s]);return t.endVector()}static startTmVector(t,e){t.startVector(8,e,8)}static addType(t,e){t.addFieldInt8(6,e,c.Unknown)}static addParts(t,e){t.addFieldOffset(7,e,0)}static createPartsVector(t,e){t.startVector(4,e.length,4);for(let s=e.length-1;s>=0;s--)t.addOffset(e[s]);return t.endVector()}static startPartsVector(t,e){t.startVector(4,e,4)}static endGeometry(t){return t.endObject()}static createGeometry(t,e,s,r,i,n,o,a,b){return g.startGeometry(t),g.addEnds(t,e),g.addXy(t,s),g.addZ(t,r),g.addM(t,i),g.addT(t,n),g.addTm(t,o),g.addType(t,a),g.addParts(t,b),g.endGeometry(t)}}function y(t,e,s){if(0!==t.length)if(Array.isArray(t[0]))for(const r of t)y(r,e,s);else 2===t.length?e.push(...t):(e.push(t[0],t[1]),s.push(t[2]))}function w(t,e){const s=[];for(let r=0;r<t.length;r+=2){const i=[t[r],t[r+1]];e&&i.push(e[r>>1]),s.push(i)}return s}function m(t){return t?c[t]:c.Unknown}function v(t){const e=t.coordinates,s=[],r=[];let i,n;const o=m(t.type);let a=0;switch(t.type){case"Point":y(e,s,r);break;case"MultiPoint":case"LineString":y(e,s,r);break;case"MultiLineString":case"Polygon":{const t=e;y(t,s,r),t.length>1&&(i=t.map(t=>a+=t.length));break}case"MultiPolygon":n=e.map(t=>({type:"Polygon",coordinates:t})).map(v);break;case"GeometryCollection":t.geometries&&(n=t.geometries.map(v))}return{xy:s,z:r.length>0?r:void 0,ends:i,type:o,parts:n}}function I(t,e){if(e===c.GeometryCollection){const s=[];for(let e=0;e<t.partsLength();e++){const r=t.parts(e),i=r.type();s.push(I(r,i))}return{type:c[e],geometries:s}}if(e===c.MultiPolygon){const s=[];for(let e=0;e<t.partsLength();e++)s.push(I(t.parts(e),c.Polygon));return{type:c[e],coordinates:s.map(t=>t.coordinates)}}const s=function(t,e){const s=t.xyArray(),r=t.zArray();switch(e){case c.Point:{const t=Array.from(s);return r&&t.push(r[0]),t}case c.MultiPoint:case c.LineString:return w(s,r);case c.MultiLineString:case c.Polygon:return function(t,e,s){if(!s||0===s.length)return[w(t,e)];let r=0;const i=Array.from(s).map(e=>t.slice(r,r=e<<1));let n;return e&&(r=0,n=Array.from(s).map(t=>e.slice(r,r=t))),i.map((t,e)=>w(t,n?n[e]:void 0))}(s,r,t.endsArray())}}(t,e);return{type:c[e],coordinates:s}}class F{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsFeature(t,e){return(e||new F).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsFeature(t,e){return t.setPosition(t.position()+4),(e||new F).__init(t.readInt32(t.position())+t.position(),t)}geometry(t){const e=this.bb.__offset(this.bb_pos,4);return e?(t||new g).__init(this.bb.__indirect(this.bb_pos+e),this.bb):null}properties(t){const e=this.bb.__offset(this.bb_pos,6);return e?this.bb.readUint8(this.bb.__vector(this.bb_pos+e)+t):0}propertiesLength(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.__vector_len(this.bb_pos+t):0}propertiesArray(){const t=this.bb.__offset(this.bb_pos,6);return t?new Uint8Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}columns(t,e){const s=this.bb.__offset(this.bb_pos,8);return s?(e||new l).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos+s)+4*t),this.bb):null}columnsLength(){const t=this.bb.__offset(this.bb_pos,8);return t?this.bb.__vector_len(this.bb_pos+t):0}static startFeature(t){t.startObject(3)}static addGeometry(t,e){t.addFieldOffset(0,e,0)}static addProperties(t,e){t.addFieldOffset(1,e,0)}static createPropertiesVector(t,e){t.startVector(1,e.length,1);for(let s=e.length-1;s>=0;s--)t.addInt8(e[s]);return t.endVector()}static startPropertiesVector(t,e){t.startVector(1,e,1)}static addColumns(t,e){t.addFieldOffset(2,e,0)}static createColumnsVector(t,e){t.startVector(4,e.length,4);for(let s=e.length-1;s>=0;s--)t.addOffset(e[s]);return t.endVector()}static startColumnsVector(t,e){t.startVector(4,e,4)}static endFeature(t){return t.endObject()}static finishFeatureBuffer(t,e){t.finish(e)}static finishSizePrefixedFeatureBuffer(t,e){t.finish(e,void 0,!0)}static createFeature(t,e,s,r){return F.startFeature(t),F.addGeometry(t,e),F.addProperties(t,s),F.addColumns(t,r),F.endFeature(t)}}const O=new TextEncoder,U=new TextDecoder;function S(t,e,r){const i=r.columns,n=new u;let o=0,a=1024,b=new Uint8Array(a),h=new DataView(b.buffer);const c=function(t){if(o+t<a)return;a*=2;const e=new Uint8Array(a);e.set(b),b=e,h=new DataView(b.buffer,o)};if(i)for(let t=0;t<i.length;t++){const r=i[t],n=e[r.name];if(null!==n)switch(h.setUint16(o,t,!0),o+=2,r.type){case s.Bool:c(1),h.setUint8(o,n),o+=1;break;case s.Short:c(2),h.setInt16(o,n,!0),o+=2;break;case s.UShort:c(2),h.setUint16(o,n,!0),o+=2;break;case s.Int:c(4),h.setInt32(o,n,!0),o+=4;break;case s.UInt:c(4),h.setUint32(o,n,!0),o+=4;break;case s.Long:c(8),h.setBigInt64(o,BigInt(n),!0),o+=8;break;case s.Double:c(8),h.setFloat64(o,n,!0),o+=8;break;case s.DateTime:case s.String:{const t=O.encode(n);c(4),h.setUint32(o,t.length,!0),o+=4,c(t.length),b.set(t,o),o+=t.length;break}default:throw new Error("Unknown type "+r.type)}}let d=null;o>0&&(d=F.createPropertiesVector(n,b.slice(0,o)));const l=function t(e,s){const{xy:r,z:i,ends:n,parts:o,type:a}=s;if(o){const s=o.map(s=>t(e,s)),r=g.createPartsVector(e,s);return g.startGeometry(e),g.addParts(e,r),g.endGeometry(e)}const b=g.createXyVector(e,r);let h,c;return i&&(h=g.createZVector(e,i)),n&&(c=g.createEndsVector(e,n)),g.startGeometry(e),c&&g.addEnds(e,c),g.addXy(e,b),h&&g.addZ(e,h),g.addType(e,a),g.endGeometry(e)}(n,t);F.startFeature(n),F.addGeometry(n,l),d&&F.addProperties(n,d);const f=F.endFeature(n);return n.finishSizePrefixed(f),n.asUint8Array()}function P(t,e){const r=e.columns,i={type:"Feature",geometry:I(t.geometry(),e.geometryType)};return r&&r.length>0&&(i.properties=function(t,e){const r={};if(!e||0===e.length)return r;const i=t.propertiesArray();if(!i)return r;const n=new DataView(i.buffer,i.byteOffset),o=t.propertiesLength();let a=0;for(;a<o;){const t=n.getUint16(a,!0);a+=2;const o=e[t],b=o.name;switch(o.type){case 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this.bb.bytes().subarray(this.bb.position(),this.bb.position()+this.offset())}prep(t,e){t>this.minalign&&(this.minalign=t);const s=1+~(this.bb.capacity()-this.space+e)&t-1;for(;this.space<s+t+e;){const t=this.bb.capacity();this.bb=u.growByteBuffer(this.bb),this.space+=this.bb.capacity()-t}this.pad(s)}pad(t){for(let e=0;e<t;e++)this.bb.writeInt8(--this.space,0)}writeInt8(t){this.bb.writeInt8(this.space-=1,t)}writeInt16(t){this.bb.writeInt16(this.space-=2,t)}writeInt32(t){this.bb.writeInt32(this.space-=4,t)}writeInt64(t){this.bb.writeInt64(this.space-=8,t)}writeFloat32(t){this.bb.writeFloat32(this.space-=4,t)}writeFloat64(t){this.bb.writeFloat64(this.space-=8,t)}addInt8(t){this.prep(1,0),this.writeInt8(t)}addInt16(t){this.prep(2,0),this.writeInt16(t)}addInt32(t){this.prep(4,0),this.writeInt32(t)}addInt64(t){this.prep(8,0),this.writeInt64(t)}addFloat32(t){this.prep(4,0),this.writeFloat32(t)}addFloat64(t){this.prep(8,0),this.writeFloat64(t)}addFieldInt8(t,e,s){(this.force_defaults||e!=s)&&(this.addInt8(e),this.slot(t))}addFieldInt16(t,e,s){(this.force_defaults||e!=s)&&(this.addInt16(e),this.slot(t))}addFieldInt32(t,e,s){(this.force_defaults||e!=s)&&(this.addInt32(e),this.slot(t))}addFieldInt64(t,e,s){!this.force_defaults&&e.equals(s)||(this.addInt64(e),this.slot(t))}addFieldFloat32(t,e,s){(this.force_defaults||e!=s)&&(this.addFloat32(e),this.slot(t))}addFieldFloat64(t,e,s){(this.force_defaults||e!=s)&&(this.addFloat64(e),this.slot(t))}addFieldOffset(t,e,s){(this.force_defaults||e!=s)&&(this.addOffset(e),this.slot(t))}addFieldStruct(t,e,s){e!=s&&(this.nested(e),this.slot(t))}nested(t){if(t!=this.offset())throw new Error("FlatBuffers: struct must be serialized inline.")}notNested(){if(this.isNested)throw new Error("FlatBuffers: object serialization must not be nested.")}slot(t){null!==this.vtable&&(this.vtable[t]=this.offset())}offset(){return this.bb.capacity()-this.space}static growByteBuffer(t){const e=t.capacity();if(3221225472&e)throw new Error("FlatBuffers: cannot grow buffer beyond 2 gigabytes.");const s=e<<1,r=d.allocate(s);return r.setPosition(s-e),r.bytes().set(t.bytes(),s-e),r}addOffset(t){this.prep(4,0),this.writeInt32(this.offset()-t+4)}startObject(t){this.notNested(),null==this.vtable&&(this.vtable=[]),this.vtable_in_use=t;for(let e=0;e<t;e++)this.vtable[e]=0;this.isNested=!0,this.object_start=this.offset()}endObject(){if(null==this.vtable||!this.isNested)throw new Error("FlatBuffers: endObject called without startObject");this.addInt32(0);const t=this.offset();let e=this.vtable_in_use-1;for(;e>=0&&0==this.vtable[e];e--);const s=e+1;for(;e>=0;e--)this.addInt16(0!=this.vtable[e]?t-this.vtable[e]:0);this.addInt16(t-this.object_start);const r=2*(s+2);this.addInt16(r);let i=0;const n=this.space;t:for(e=0;e<this.vtables.length;e++){const t=this.bb.capacity()-this.vtables[e];if(r==this.bb.readInt16(t)){for(let e=2;e<r;e+=2)if(this.bb.readInt16(n+e)!=this.bb.readInt16(t+e))continue t;i=this.vtables[e];break}}return i?(this.space=this.bb.capacity()-t,this.bb.writeInt32(this.space,i-t)):(this.vtables.push(this.offset()),this.bb.writeInt32(this.bb.capacity()-t,this.offset()-t)),this.isNested=!1,t}finish(t,e,s){const r=s?4:0;if(e){const t=e;if(this.prep(this.minalign,8+r),4!=t.length)throw new Error("FlatBuffers: file identifier must be length 4");for(let e=3;e>=0;e--)this.writeInt8(t.charCodeAt(e))}this.prep(this.minalign,4+r),this.addOffset(t),r&&this.addInt32(this.bb.capacity()-this.space),this.bb.setPosition(this.space)}finishSizePrefixed(t,e){this.finish(t,e,!0)}requiredField(t,e){const s=this.bb.capacity()-t,r=s-this.bb.readInt32(s);if(0==this.bb.readInt16(r+e))throw new Error("FlatBuffers: field "+e+" must be set")}startVector(t,e,s){this.notNested(),this.vector_num_elems=e,this.prep(4,t*e),this.prep(s,t*e)}endVector(){return this.writeInt32(this.vector_num_elems),this.offset()}createSharedString(t){if(!t)return 0;if(this.string_maps||(this.string_maps=new Map),this.string_maps.has(t))return this.string_maps.get(t);const e=this.createString(t);return this.string_maps.set(t,e),e}createString(t){if(!t)return 0;let e;if(t instanceof Uint8Array)e=t;else{e=[];let s=0;for(;s<t.length;){let r;const i=t.charCodeAt(s++);r=i<55296||i>=56320?i:(i<<10)+t.charCodeAt(s++)+-56613888,r<128?e.push(r):(r<2048?e.push(r>>6&31|192):(r<65536?e.push(r>>12&15|224):e.push(r>>18&7|240,r>>12&63|128),e.push(r>>6&63|128)),e.push(63&r|128))}}this.addInt8(0),this.startVector(1,e.length,1),this.bb.setPosition(this.space-=e.length);for(let t=0,s=this.space,r=this.bb.bytes();t<e.length;t++)r[s++]=e[t];return this.endVector()}createLong(t,e){return b.create(t,e)}createObjectOffset(t){return null===t?0:"string"==typeof t?this.createString(t):t.pack(this)}createObjectOffsetList(t){const e=[];for(let s=0;s<t.length;++s){const r=t[s];if(null===r)throw new Error("FlatBuffers: Argument for createObjectOffsetList cannot contain null.");e.push(this.createObjectOffset(r))}return e}createStructOffsetList(t,e){return e(this,t.length),this.createObjectOffsetList(t),this.endVector()}}class l{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsColumn(t,e){return(e||new l).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsColumn(t,e){return t.setPosition(t.position()+4),(e||new l).__init(t.readInt32(t.position())+t.position(),t)}name(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.__string(this.bb_pos+e,t):null}type(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.readUint8(this.bb_pos+t):s.Byte}title(t){const e=this.bb.__offset(this.bb_pos,8);return e?this.bb.__string(this.bb_pos+e,t):null}description(t){const e=this.bb.__offset(this.bb_pos,10);return e?this.bb.__string(this.bb_pos+e,t):null}width(){const t=this.bb.__offset(this.bb_pos,12);return t?this.bb.readInt32(this.bb_pos+t):-1}precision(){const t=this.bb.__offset(this.bb_pos,14);return t?this.bb.readInt32(this.bb_pos+t):-1}scale(){const t=this.bb.__offset(this.bb_pos,16);return t?this.bb.readInt32(this.bb_pos+t):-1}nullable(){const t=this.bb.__offset(this.bb_pos,18);return!t||!!this.bb.readInt8(this.bb_pos+t)}unique(){const t=this.bb.__offset(this.bb_pos,20);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}primaryKey(){const t=this.bb.__offset(this.bb_pos,22);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}metadata(t){const e=this.bb.__offset(this.bb_pos,24);return e?this.bb.__string(this.bb_pos+e,t):null}static startColumn(t){t.startObject(11)}static addName(t,e){t.addFieldOffset(0,e,0)}static addType(t,e){t.addFieldInt8(1,e,s.Byte)}static addTitle(t,e){t.addFieldOffset(2,e,0)}static addDescription(t,e){t.addFieldOffset(3,e,0)}static addWidth(t,e){t.addFieldInt32(4,e,-1)}static addPrecision(t,e){t.addFieldInt32(5,e,-1)}static addScale(t,e){t.addFieldInt32(6,e,-1)}static addNullable(t,e){t.addFieldInt8(7,+e,1)}static addUnique(t,e){t.addFieldInt8(8,+e,0)}static addPrimaryKey(t,e){t.addFieldInt8(9,+e,0)}static addMetadata(t,e){t.addFieldOffset(10,e,0)}static endColumn(t){const e=t.endObject();return t.requiredField(e,4),e}static createColumn(t,e,s,r,i,n,o,a,b,h,c,d){return l.startColumn(t),l.addName(t,e),l.addType(t,s),l.addTitle(t,r),l.addDescription(t,i),l.addWidth(t,n),l.addPrecision(t,o),l.addScale(t,a),l.addNullable(t,b),l.addUnique(t,h),l.addPrimaryKey(t,c),l.addMetadata(t,d),l.endColumn(t)}}class f{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsCrs(t,e){return(e||new f).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsCrs(t,e){return t.setPosition(t.position()+4),(e||new f).__init(t.readInt32(t.position())+t.position(),t)}org(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.__string(this.bb_pos+e,t):null}code(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.readInt32(this.bb_pos+t):0}name(t){const e=this.bb.__offset(this.bb_pos,8);return e?this.bb.__string(this.bb_pos+e,t):null}description(t){const e=this.bb.__offset(this.bb_pos,10);return e?this.bb.__string(this.bb_pos+e,t):null}wkt(t){const e=this.bb.__offset(this.bb_pos,12);return e?this.bb.__string(this.bb_pos+e,t):null}codeString(t){const e=this.bb.__offset(this.bb_pos,14);return e?this.bb.__string(this.bb_pos+e,t):null}static startCrs(t){t.startObject(6)}static addOrg(t,e){t.addFieldOffset(0,e,0)}static addCode(t,e){t.addFieldInt32(1,e,0)}static addName(t,e){t.addFieldOffset(2,e,0)}static addDescription(t,e){t.addFieldOffset(3,e,0)}static addWkt(t,e){t.addFieldOffset(4,e,0)}static addCodeString(t,e){t.addFieldOffset(5,e,0)}static endCrs(t){return t.endObject()}static createCrs(t,e,s,r,i,n,o){return f.startCrs(t),f.addOrg(t,e),f.addCode(t,s),f.addName(t,r),f.addDescription(t,i),f.addWkt(t,n),f.addCodeString(t,o),f.endCrs(t)}}!function(t){t[t.Unknown=0]="Unknown",t[t.Point=1]="Point",t[t.LineString=2]="LineString",t[t.Polygon=3]="Polygon",t[t.MultiPoint=4]="MultiPoint",t[t.MultiLineString=5]="MultiLineString",t[t.MultiPolygon=6]="MultiPolygon",t[t.GeometryCollection=7]="GeometryCollection",t[t.CircularString=8]="CircularString",t[t.CompoundCurve=9]="CompoundCurve",t[t.CurvePolygon=10]="CurvePolygon",t[t.MultiCurve=11]="MultiCurve",t[t.MultiSurface=12]="MultiSurface",t[t.Curve=13]="Curve",t[t.Surface=14]="Surface",t[t.PolyhedralSurface=15]="PolyhedralSurface",t[t.TIN=16]="TIN",t[t.Triangle=17]="Triangle"}(c||(c={}));class _{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsHeader(t,e){return(e||new _).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsHeader(t,e){return t.setPosition(t.position()+4),(e||new _).__init(t.readInt32(t.position())+t.position(),t)}name(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.__string(this.bb_pos+e,t):null}envelope(t){const e=this.bb.__offset(this.bb_pos,6);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}envelopeLength(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.__vector_len(this.bb_pos+t):0}envelopeArray(){const t=this.bb.__offset(this.bb_pos,6);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}geometryType(){const t=this.bb.__offset(this.bb_pos,8);return t?this.bb.readUint8(this.bb_pos+t):c.Unknown}hasZ(){const t=this.bb.__offset(this.bb_pos,10);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}hasM(){const t=this.bb.__offset(this.bb_pos,12);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}hasT(){const t=this.bb.__offset(this.bb_pos,14);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}hasTm(){const t=this.bb.__offset(this.bb_pos,16);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}columns(t,e){const s=this.bb.__offset(this.bb_pos,18);return s?(e||new l).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos+s)+4*t),this.bb):null}columnsLength(){const t=this.bb.__offset(this.bb_pos,18);return t?this.bb.__vector_len(this.bb_pos+t):0}featuresCount(){const t=this.bb.__offset(this.bb_pos,20);return t?this.bb.readUint64(this.bb_pos+t):this.bb.createLong(0,0)}indexNodeSize(){const t=this.bb.__offset(this.bb_pos,22);return t?this.bb.readUint16(this.bb_pos+t):16}crs(t){const e=this.bb.__offset(this.bb_pos,24);return e?(t||new f).__init(this.bb.__indirect(this.bb_pos+e),this.bb):null}title(t){const e=this.bb.__offset(this.bb_pos,26);return e?this.bb.__string(this.bb_pos+e,t):null}description(t){const e=this.bb.__offset(this.bb_pos,28);return e?this.bb.__string(this.bb_pos+e,t):null}metadata(t){const e=this.bb.__offset(this.bb_pos,30);return e?this.bb.__string(this.bb_pos+e,t):null}static startHeader(t){t.startObject(14)}static addName(t,e){t.addFieldOffset(0,e,0)}static addEnvelope(t,e){t.addFieldOffset(1,e,0)}static createEnvelopeVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addFloat64(e[s]);return t.endVector()}static startEnvelopeVector(t,e){t.startVector(8,e,8)}static addGeometryType(t,e){t.addFieldInt8(2,e,c.Unknown)}static addHasZ(t,e){t.addFieldInt8(3,+e,0)}static addHasM(t,e){t.addFieldInt8(4,+e,0)}static addHasT(t,e){t.addFieldInt8(5,+e,0)}static addHasTm(t,e){t.addFieldInt8(6,+e,0)}static addColumns(t,e){t.addFieldOffset(7,e,0)}static createColumnsVector(t,e){t.startVector(4,e.length,4);for(let s=e.length-1;s>=0;s--)t.addOffset(e[s]);return t.endVector()}static startColumnsVector(t,e){t.startVector(4,e,4)}static addFeaturesCount(t,e){t.addFieldInt64(8,e,t.createLong(0,0))}static addIndexNodeSize(t,e){t.addFieldInt16(9,e,16)}static addCrs(t,e){t.addFieldOffset(10,e,0)}static addTitle(t,e){t.addFieldOffset(11,e,0)}static addDescription(t,e){t.addFieldOffset(12,e,0)}static addMetadata(t,e){t.addFieldOffset(13,e,0)}static endHeader(t){return t.endObject()}static finishHeaderBuffer(t,e){t.finish(e)}static finishSizePrefixedHeaderBuffer(t,e){t.finish(e,void 0,!0)}}class p{constructor(t,e,s,r,i,n,o,a){this.geometryType=t,this.columns=e,this.featuresCount=s,this.indexNodeSize=r,this.crs=i,this.title=n,this.description=o,this.metadata=a}static fromByteBuffer(t){const s=_.getRootAsHeader(t),i=s.featuresCount().toFloat64(),n=s.indexNodeSize(),o=[];for(let t=0;t<s.columnsLength();t++){const r=s.columns(t);if(!r)throw new Error("Column unexpectedly missing");if(!r.name())throw new Error("Column name unexpectedly missing");o.push(new e(r.name(),r.type(),r.title(),r.description(),r.width(),r.precision(),r.scale(),r.nullable(),r.unique(),r.primaryKey()))}const a=s.crs(),b=a?new r(a.org(),a.code(),a.name(),a.description(),a.wkt(),a.codeString()):null;return new p(s.geometryType(),o,i,n,b,s.title(),s.description(),s.metadata())}}class g{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsGeometry(t,e){return(e||new g).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsGeometry(t,e){return t.setPosition(t.position()+4),(e||new g).__init(t.readInt32(t.position())+t.position(),t)}ends(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.readUint32(this.bb.__vector(this.bb_pos+e)+4*t):0}endsLength(){const t=this.bb.__offset(this.bb_pos,4);return t?this.bb.__vector_len(this.bb_pos+t):0}endsArray(){const t=this.bb.__offset(this.bb_pos,4);return t?new Uint32Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}xy(t){const e=this.bb.__offset(this.bb_pos,6);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}xyLength(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.__vector_len(this.bb_pos+t):0}xyArray(){const t=this.bb.__offset(this.bb_pos,6);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}z(t){const e=this.bb.__offset(this.bb_pos,8);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}zLength(){const t=this.bb.__offset(this.bb_pos,8);return t?this.bb.__vector_len(this.bb_pos+t):0}zArray(){const t=this.bb.__offset(this.bb_pos,8);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}m(t){const e=this.bb.__offset(this.bb_pos,10);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}mLength(){const t=this.bb.__offset(this.bb_pos,10);return t?this.bb.__vector_len(this.bb_pos+t):0}mArray(){const t=this.bb.__offset(this.bb_pos,10);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}t(t){const e=this.bb.__offset(this.bb_pos,12);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}tLength(){const t=this.bb.__offset(this.bb_pos,12);return t?this.bb.__vector_len(this.bb_pos+t):0}tArray(){const t=this.bb.__offset(this.bb_pos,12);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}tm(t){const e=this.bb.__offset(this.bb_pos,14);return e?this.bb.readUint64(this.bb.__vector(this.bb_pos+e)+8*t):this.bb.createLong(0,0)}tmLength(){const t=this.bb.__offset(this.bb_pos,14);return t?this.bb.__vector_len(this.bb_pos+t):0}type(){const t=this.bb.__offset(this.bb_pos,16);return t?this.bb.readUint8(this.bb_pos+t):c.Unknown}parts(t,e){const s=this.bb.__offset(this.bb_pos,18);return s?(e||new g).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos+s)+4*t),this.bb):null}partsLength(){const t=this.bb.__offset(this.bb_pos,18);return t?this.bb.__vector_len(this.bb_pos+t):0}static startGeometry(t){t.startObject(8)}static addEnds(t,e){t.addFieldOffset(0,e,0)}static createEndsVector(t,e){t.startVector(4,e.length,4);for(let s=e.length-1;s>=0;s--)t.addInt32(e[s]);return t.endVector()}static startEndsVector(t,e){t.startVector(4,e,4)}static addXy(t,e){t.addFieldOffset(1,e,0)}static createXyVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addFloat64(e[s]);return t.endVector()}static startXyVector(t,e){t.startVector(8,e,8)}static addZ(t,e){t.addFieldOffset(2,e,0)}static createZVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addFloat64(e[s]);return t.endVector()}static startZVector(t,e){t.startVector(8,e,8)}static addM(t,e){t.addFieldOffset(3,e,0)}static createMVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addFloat64(e[s]);return t.endVector()}static startMVector(t,e){t.startVector(8,e,8)}static addT(t,e){t.addFieldOffset(4,e,0)}static createTVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addFloat64(e[s]);return t.endVector()}static startTVector(t,e){t.startVector(8,e,8)}static addTm(t,e){t.addFieldOffset(5,e,0)}static createTmVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addInt64(e[s]);return t.endVector()}static startTmVector(t,e){t.startVector(8,e,8)}static addType(t,e){t.addFieldInt8(6,e,c.Unknown)}static addParts(t,e){t.addFieldOffset(7,e,0)}static createPartsVector(t,e){t.startVector(4,e.length,4);for(let s=e.length-1;s>=0;s--)t.addOffset(e[s]);return t.endVector()}static startPartsVector(t,e){t.startVector(4,e,4)}static endGeometry(t){return t.endObject()}static createGeometry(t,e,s,r,i,n,o,a,b){return g.startGeometry(t),g.addEnds(t,e),g.addXy(t,s),g.addZ(t,r),g.addM(t,i),g.addT(t,n),g.addTm(t,o),g.addType(t,a),g.addParts(t,b),g.endGeometry(t)}}function y(t,e,s){if(0!==t.length)if(Array.isArray(t[0]))for(const r of t)y(r,e,s);else 2===t.length?e.push(...t):(e.push(t[0],t[1]),s.push(t[2]))}function w(t,e){const s=[];for(let r=0;r<t.length;r+=2){const i=[t[r],t[r+1]];e&&i.push(e[r>>1]),s.push(i)}return s}function m(t){return t?c[t]:c.Unknown}function v(t){const e=t.coordinates,s=[],r=[];let i,n;const o=m(t.type);let a=0;switch(t.type){case"Point":y(e,s,r);break;case"MultiPoint":case"LineString":y(e,s,r);break;case"MultiLineString":case"Polygon":{const 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0))}(s,r,t.endsArray())}}(t,e);return{type:c[e],coordinates:s}}class F{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsFeature(t,e){return(e||new F).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsFeature(t,e){return t.setPosition(t.position()+4),(e||new F).__init(t.readInt32(t.position())+t.position(),t)}geometry(t){const e=this.bb.__offset(this.bb_pos,4);return e?(t||new g).__init(this.bb.__indirect(this.bb_pos+e),this.bb):null}properties(t){const e=this.bb.__offset(this.bb_pos,6);return e?this.bb.readUint8(this.bb.__vector(this.bb_pos+e)+t):0}propertiesLength(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.__vector_len(this.bb_pos+t):0}propertiesArray(){const t=this.bb.__offset(this.bb_pos,6);return t?new Uint8Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}columns(t,e){const 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F.startFeature(t),F.addGeometry(t,e),F.addProperties(t,s),F.addColumns(t,r),F.endFeature(t)}}const O=new TextEncoder,U=new TextDecoder;function S(t,e,r){const i=r.columns,n=new u;let o=0,a=1024,b=new Uint8Array(a),h=new DataView(b.buffer);const c=function(t){if(o+t<a)return;a*=2;const e=new Uint8Array(a);e.set(b),b=e,h=new DataView(b.buffer,o)};if(i)for(let t=0;t<i.length;t++){const r=i[t],n=e[r.name];if(null!==n)switch(h.setUint16(o,t,!0),o+=2,r.type){case s.Bool:c(1),h.setUint8(o,n),o+=1;break;case s.Short:c(2),h.setInt16(o,n,!0),o+=2;break;case s.UShort:c(2),h.setUint16(o,n,!0),o+=2;break;case s.Int:c(4),h.setInt32(o,n,!0),o+=4;break;case s.UInt:c(4),h.setUint32(o,n,!0),o+=4;break;case s.Long:c(8),h.setBigInt64(o,BigInt(n),!0),o+=8;break;case s.Double:c(8),h.setFloat64(o,n,!0),o+=8;break;case s.DateTime:case s.String:{const t=O.encode(n);c(4),h.setUint32(o,t.length,!0),o+=4,c(t.length),b.set(t,o),o+=t.length;break}default:throw new Error("Unknown type "+r.type)}}let 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error(...t){this.log(C.Error,...t)}static log(t,...e){if(!(this.logLevel>t))switch(t){case C.Debug:console.debug(...e);break;case C.Info:console.info(...e);break;case C.Warn:console.warn(...e);break;case C.Error:console.error(...e)}}}function L(t,e){e=Math.min(Math.max(+e,2),65535);let s=t,r=s;do{s=Math.ceil(s/e),r+=s}while(1!==s);return 40*r}function j(t,e){if(0!=(4293918720&t))throw Error("integer is too large to be safely represented");return e+t*2**32}x.logLevel=C.Info;const T=new Uint8Array([102,103,98,3,102,103,98,0]);class k{constructor(t,e,s,r){this.headerClient=t,this.header=e,this.headerLength=s,this.indexLength=r}static async open(t){const e=new E(t),s=(()=>{let t,e=0;for(t=0;t<3;t++)e+=16**t*40;return e})(),r=2024+s;x.debug(`fetching header. minReqLength: ${r} (assumedHeaderLength: 2024, assumedIndexLength: ${s})`);{const t=new Uint8Array(await e.getRange(0,8,r,"header"));if(!t.every((t,e)=>T[e]===t))throw x.error(`bytes: ${t} != ${T}`),new Error("Not a FlatGeobuf file");x.debug("magic bytes look good")}let i;{const t=await e.getRange(8,4,r,"header");if(i=new DataView(t).getUint32(0,!0),i>10485760||i<8)throw new Error("Invalid header size");x.debug("headerLength: "+i)}const n=await e.getRange(12,i,r,"header"),o=new d(new Uint8Array(n)),a=p.fromByteBuffer(o),b=L(a.featuresCount,a.indexNodeSize);return x.debug("completed: opening http reader"),new k(e,a,i,b)}async*selectBbox(t){const e=this.lengthBeforeTree(),s=this.headerClient;x.debug("starting: selectBbox, traversing index. lengthBeforeTree: "+e),yield*async function*(t,e,s,r){class i{constructor(t,e){this._level=e,this.nodes=t}level(){return this._level}startNode(){return this.nodes[0]}endNode(){return this.nodes[1]}extendEndNodeToNewOffset(t){console.assert(t>this.nodes[1]),this.nodes[1]=t}toString(){return`[NodeRange level: ${this._level}, nodes: ${this.nodes[0]}-${this.nodes[1]}]`}}const{minX:n,minY:o,maxX:a,maxY:b}=s,h=function(t,e){if(e<2)throw new Error("Node size must be at least 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Pushing new request at offset: ${l} rather than merging with distant ${_}`):x.debug(`Pushing new level for ${p} onto queue with nearestNodeRange: ${_} since there's not already a range for this level.`),d.push(p)}}}(this.header.featuresCount,this.header.indexNodeSize,t,(async function(t,r){return s.getRange(e+t,r,0,"index")}))}lengthBeforeTree(){return T.length+4+this.headerLength}lengthBeforeFeatures(){return this.lengthBeforeTree()+this.indexLength}featureClient(){return void 0===this._featureClient&&(this._featureClient=this.headerClient.clone()),this._featureClient}async readFeature(t){const e=131072,s=t+this.lengthBeforeFeatures();let r;{const t=await this.featureClient().getRange(s,4,e,"feature length");r=new DataView(t).getUint32(0,!0)}x.debug(`featureOffset: ${s}, featureLength: ${r}`);const i=await this.featureClient().getRange(s+4,r,e,"feature data"),n=new Uint8Array(i),o=new Uint8Array(r+4);o.set(n,4);const a=new d(o);return a.setPosition(4),F.getRootAsFeature(a)}}class E{constructor(t){this.buffer=new ArrayBuffer(0),this.head=0,this.httpClient="string"==typeof t?new N(t):t}clone(){const t=new E(this.httpClient);return t.buffer=this.buffer.slice(0),t.head=this.head,t}async getRange(t,e,s,r){x.debug(`need Range: ${t}-${t+e-1}`);const i=t-this.head,n=i+e;if(i>=0&&n<this.buffer.byteLength)return x.debug(`slicing existing Range: ${i}-${n-1}`),this.buffer.slice(i,n);const o=Math.max(e,s);return this.buffer=await this.httpClient.getRange(t,o,r),this.head=t,this.buffer.slice(0,e)}}class N{constructor(t){this.requestsEverMade=0,this.bytesEverRequested=0,this.url=t}async getRange(t,e,s){this.requestsEverMade+=1,this.bytesEverRequested+=e;const r=`bytes=${t}-${t+e-1}`;return x.debug(`request: #${this.requestsEverMade}, purpose: ${s}), bytes: (this_request: ${e}, ever: ${this.bytesEverRequested}), Range: ${r}`),(await fetch(this.url,{headers:{Range:r}})).arrayBuffer()}}async function M(t,e,s){let r=new Uint8Array(await t(4,"feature length"));if(0===r.byteLength)return;let i=new d(r);const n=i.readUint32(0);r=new Uint8Array(await t(n,"feature data"));const o=new Uint8Array(n+4);return o.set(r,4),i=new d(o),i.setPosition(4),s(F.getRootAsFeature(i),e)}function R(t){const e=new u;let s=null;t.columns&&(s=_.createColumnsVector(e,t.columns.map(t=>function(t,e){const s=t.createString(e.name);return l.startColumn(t),l.addName(t,s),l.addType(t,e.type),l.endColumn(t)}(e,t))));const r=e.createString("L1");_.startHeader(e),_.addFeaturesCount(e,new b(t.featuresCount,0)),_.addGeometryType(e,t.geometryType),_.addIndexNodeSize(e,0),s&&_.addColumns(e,s),_.addName(e,r);const i=_.endHeader(e);return e.finishSizePrefixed(i),e.asUint8Array()}t.deserialize=function(t,e,s){return t instanceof Uint8Array?function(t,e){return{type:"FeatureCollection",features:function(t,e,s){if(!t.subarray(0,7).every((t,e)=>T[e]===t))throw new Error("Not a FlatGeobuf file");const r=new d(t),i=r.readUint32(T.length);r.setPosition(T.length+4);const n=p.fromByteBuffer(r);s&&s(n);let o=T.length+4+i;const{indexNodeSize:a,featuresCount:b}=n;a>0&&(o+=L(b,a));const h=[];for(;o<r.capacity();){const t=r.readUint32(o);r.setPosition(o+4);const s=F.getRootAsFeature(r);h.push(e(s,n)),o+=4+t}return h}(t,P,e)}}(t,s):t instanceof ReadableStream?function(t,e){return async function*(t,e,s){const r="function"==typeof(i=t).slice?i:new B("function"==typeof i.read?i:i.getReader());var i;const n=async t=>await r.slice(t);let o=new Uint8Array(await n(8));if(!o.every((t,e)=>T[e]===t))throw new Error("Not a FlatGeobuf file");o=new Uint8Array(await n(4));let a=new d(o);const b=a.readUint32(0);o=new Uint8Array(await n(b)),a=new d(o);const h=p.fromByteBuffer(a);s&&s(h);const{indexNodeSize:c,featuresCount:u}=h;if(c>0){const t=L(u,c);await n(t)}let l;for(;l=await M(n,h,e);)yield l}(t,P,e)}(t,s):function(t,e,s){return async function*(t,e,s,r){const i=await k.open(t);x.debug("opened reader"),r&&r(i.header);for await(const t of i.selectBbox(e)){const e=await i.readFeature(t[0]);yield s(e,i.header)}}(t,e,P,s)}(t,e,s)},t.serialize=function(t){return function(t){const r=function(t){const r=t.features[0],i=r.properties;let n=null;return i&&(n=Object.keys(i).map(t=>new e(t,function(t){if("boolean"==typeof t)return s.Bool;if("number"==typeof t)return t%1==0?s.Int:s.Double;if("string"==typeof t)return s.String;if(null===t)return s.String;throw new Error(`Unknown type (value '${t}')`)}(i[t]),null,null,-1,-1,-1,!0,!1,!1))),new p(m(r.geometry.type),n,t.features.length,0,null,null,null,null)}(t),i=R(r),n=t.features.map(t=>S(v(t.geometry),t.properties,r)),o=n.map(t=>t.length).reduce((t,e)=>t+e),a=new Uint8Array(T.length+i.length+o);a.set(i,T.length);let b=T.length+i.length;for(const t of n)a.set(t,b),b+=t.length;return a.set(T),a}(t)},Object.defineProperty(t,"__esModule",{value:!0})}(e)}]);
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dist/dist.min.js

@@ -1,2 +0,2 @@
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s=this.bb.capacity()-t,i=s-this.bb.readInt32(s);if(0==this.bb.readInt16(i+e))throw new Error("FlatBuffers: field "+e+" must be set")}startVector(t,e,s){this.notNested(),this.vector_num_elems=e,this.prep(4,t*e),this.prep(s,t*e)}endVector(){return this.writeInt32(this.vector_num_elems),this.offset()}createSharedString(t){if(!t)return 0;if(this.string_maps||(this.string_maps=new Map),this.string_maps.has(t))return this.string_maps.get(t);const e=this.createString(t);return this.string_maps.set(t,e),e}createString(t){if(!t)return 0;let e;if(t instanceof Uint8Array)e=t;else{e=[];let s=0;for(;s<t.length;){let i;const r=t.charCodeAt(s++);i=r<55296||r>=56320?r:(r<<10)+t.charCodeAt(s++)+-56613888,i<128?e.push(i):(i<2048?e.push(i>>6&31|192):(i<65536?e.push(i>>12&15|224):e.push(i>>18&7|240,i>>12&63|128),e.push(i>>6&63|128)),e.push(63&i|128))}}this.addInt8(0),this.startVector(1,e.length,1),this.bb.setPosition(this.space-=e.length);for(let t=0,s=this.space,i=this.bb.bytes();t<e.length;t++)i[s++]=e[t];return this.endVector()}createLong(t,e){return b.create(t,e)}createObjectOffset(t){return null===t?0:"string"==typeof t?this.createString(t):t.pack(this)}createObjectOffsetList(t){const e=[];for(let s=0;s<t.length;++s){const i=t[s];if(null===i)throw new Error("FlatBuffers: Argument for createObjectOffsetList cannot contain null.");e.push(this.createObjectOffset(i))}return e}createStructOffsetList(t,e){return e(this,t.length),this.createObjectOffsetList(t),this.endVector()}}class u{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsColumn(t,e){return(e||new u).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsColumn(t,e){return t.setPosition(t.position()+4),(e||new u).__init(t.readInt32(t.position())+t.position(),t)}name(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.__string(this.bb_pos+e,t):null}type(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.readUint8(this.bb_pos+t):s.Byte}title(t){const e=this.bb.__offset(this.bb_pos,8);return e?this.bb.__string(this.bb_pos+e,t):null}description(t){const e=this.bb.__offset(this.bb_pos,10);return e?this.bb.__string(this.bb_pos+e,t):null}width(){const t=this.bb.__offset(this.bb_pos,12);return t?this.bb.readInt32(this.bb_pos+t):-1}precision(){const t=this.bb.__offset(this.bb_pos,14);return t?this.bb.readInt32(this.bb_pos+t):-1}scale(){const t=this.bb.__offset(this.bb_pos,16);return t?this.bb.readInt32(this.bb_pos+t):-1}nullable(){const t=this.bb.__offset(this.bb_pos,18);return!t||!!this.bb.readInt8(this.bb_pos+t)}unique(){const t=this.bb.__offset(this.bb_pos,20);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}primaryKey(){const t=this.bb.__offset(this.bb_pos,22);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}metadata(t){const e=this.bb.__offset(this.bb_pos,24);return e?this.bb.__string(this.bb_pos+e,t):null}static startColumn(t){t.startObject(11)}static addName(t,e){t.addFieldOffset(0,e,0)}static addType(t,e){t.addFieldInt8(1,e,s.Byte)}static addTitle(t,e){t.addFieldOffset(2,e,0)}static addDescription(t,e){t.addFieldOffset(3,e,0)}static addWidth(t,e){t.addFieldInt32(4,e,-1)}static addPrecision(t,e){t.addFieldInt32(5,e,-1)}static addScale(t,e){t.addFieldInt32(6,e,-1)}static addNullable(t,e){t.addFieldInt8(7,+e,1)}static addUnique(t,e){t.addFieldInt8(8,+e,0)}static addPrimaryKey(t,e){t.addFieldInt8(9,+e,0)}static addMetadata(t,e){t.addFieldOffset(10,e,0)}static endColumn(t){const e=t.endObject();return t.requiredField(e,4),e}static createColumn(t,e,s,i,r,n,o,a,b,h,c,d){return u.startColumn(t),u.addName(t,e),u.addType(t,s),u.addTitle(t,i),u.addDescription(t,r),u.addWidth(t,n),u.addPrecision(t,o),u.addScale(t,a),u.addNullable(t,b),u.addUnique(t,h),u.addPrimaryKey(t,c),u.addMetadata(t,d),u.endColumn(t)}}class f{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsCrs(t,e){return(e||new f).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsCrs(t,e){return t.setPosition(t.position()+4),(e||new f).__init(t.readInt32(t.position())+t.position(),t)}org(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.__string(this.bb_pos+e,t):null}code(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.readInt32(this.bb_pos+t):0}name(t){const e=this.bb.__offset(this.bb_pos,8);return e?this.bb.__string(this.bb_pos+e,t):null}description(t){const e=this.bb.__offset(this.bb_pos,10);return e?this.bb.__string(this.bb_pos+e,t):null}wkt(t){const e=this.bb.__offset(this.bb_pos,12);return e?this.bb.__string(this.bb_pos+e,t):null}codeString(t){const e=this.bb.__offset(this.bb_pos,14);return e?this.bb.__string(this.bb_pos+e,t):null}static startCrs(t){t.startObject(6)}static addOrg(t,e){t.addFieldOffset(0,e,0)}static addCode(t,e){t.addFieldInt32(1,e,0)}static addName(t,e){t.addFieldOffset(2,e,0)}static addDescription(t,e){t.addFieldOffset(3,e,0)}static addWkt(t,e){t.addFieldOffset(4,e,0)}static addCodeString(t,e){t.addFieldOffset(5,e,0)}static endCrs(t){return t.endObject()}static createCrs(t,e,s,i,r,n,o){return f.startCrs(t),f.addOrg(t,e),f.addCode(t,s),f.addName(t,i),f.addDescription(t,r),f.addWkt(t,n),f.addCodeString(t,o),f.endCrs(t)}}!function(t){t[t.Unknown=0]="Unknown",t[t.Point=1]="Point",t[t.LineString=2]="LineString",t[t.Polygon=3]="Polygon",t[t.MultiPoint=4]="MultiPoint",t[t.MultiLineString=5]="MultiLineString",t[t.MultiPolygon=6]="MultiPolygon",t[t.GeometryCollection=7]="GeometryCollection",t[t.CircularString=8]="CircularString",t[t.CompoundCurve=9]="CompoundCurve",t[t.CurvePolygon=10]="CurvePolygon",t[t.MultiCurve=11]="MultiCurve",t[t.MultiSurface=12]="MultiSurface",t[t.Curve=13]="Curve",t[t.Surface=14]="Surface",t[t.PolyhedralSurface=15]="PolyhedralSurface",t[t.TIN=16]="TIN",t[t.Triangle=17]="Triangle"}(c||(c={}));class _{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsHeader(t,e){return(e||new _).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsHeader(t,e){return t.setPosition(t.position()+4),(e||new _).__init(t.readInt32(t.position())+t.position(),t)}name(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.__string(this.bb_pos+e,t):null}envelope(t){const e=this.bb.__offset(this.bb_pos,6);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}envelopeLength(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.__vector_len(this.bb_pos+t):0}envelopeArray(){const t=this.bb.__offset(this.bb_pos,6);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}geometryType(){const t=this.bb.__offset(this.bb_pos,8);return t?this.bb.readUint8(this.bb_pos+t):c.Unknown}hasZ(){const t=this.bb.__offset(this.bb_pos,10);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}hasM(){const t=this.bb.__offset(this.bb_pos,12);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}hasT(){const t=this.bb.__offset(this.bb_pos,14);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}hasTm(){const t=this.bb.__offset(this.bb_pos,16);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}columns(t,e){const s=this.bb.__offset(this.bb_pos,18);return s?(e||new u).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos+s)+4*t),this.bb):null}columnsLength(){const t=this.bb.__offset(this.bb_pos,18);return t?this.bb.__vector_len(this.bb_pos+t):0}featuresCount(){const t=this.bb.__offset(this.bb_pos,20);return t?this.bb.readUint64(this.bb_pos+t):this.bb.createLong(0,0)}indexNodeSize(){const t=this.bb.__offset(this.bb_pos,22);return t?this.bb.readUint16(this.bb_pos+t):16}crs(t){const e=this.bb.__offset(this.bb_pos,24);return e?(t||new f).__init(this.bb.__indirect(this.bb_pos+e),this.bb):null}title(t){const e=this.bb.__offset(this.bb_pos,26);return e?this.bb.__string(this.bb_pos+e,t):null}description(t){const e=this.bb.__offset(this.bb_pos,28);return e?this.bb.__string(this.bb_pos+e,t):null}metadata(t){const e=this.bb.__offset(this.bb_pos,30);return e?this.bb.__string(this.bb_pos+e,t):null}static startHeader(t){t.startObject(14)}static addName(t,e){t.addFieldOffset(0,e,0)}static addEnvelope(t,e){t.addFieldOffset(1,e,0)}static createEnvelopeVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addFloat64(e[s]);return t.endVector()}static startEnvelopeVector(t,e){t.startVector(8,e,8)}static addGeometryType(t,e){t.addFieldInt8(2,e,c.Unknown)}static addHasZ(t,e){t.addFieldInt8(3,+e,0)}static addHasM(t,e){t.addFieldInt8(4,+e,0)}static addHasT(t,e){t.addFieldInt8(5,+e,0)}static addHasTm(t,e){t.addFieldInt8(6,+e,0)}static addColumns(t,e){t.addFieldOffset(7,e,0)}static createColumnsVector(t,e){t.startVector(4,e.length,4);for(let s=e.length-1;s>=0;s--)t.addOffset(e[s]);return t.endVector()}static startColumnsVector(t,e){t.startVector(4,e,4)}static addFeaturesCount(t,e){t.addFieldInt64(8,e,t.createLong(0,0))}static addIndexNodeSize(t,e){t.addFieldInt16(9,e,16)}static addCrs(t,e){t.addFieldOffset(10,e,0)}static addTitle(t,e){t.addFieldOffset(11,e,0)}static addDescription(t,e){t.addFieldOffset(12,e,0)}static addMetadata(t,e){t.addFieldOffset(13,e,0)}static endHeader(t){return t.endObject()}static finishHeaderBuffer(t,e){t.finish(e)}static finishSizePrefixedHeaderBuffer(t,e){t.finish(e,void 0,!0)}}class p{constructor(t,e,s,i,r,n,o,a){this.geometryType=t,this.columns=e,this.featuresCount=s,this.indexNodeSize=i,this.crs=r,this.title=n,this.description=o,this.metadata=a}static fromByteBuffer(t){const s=_.getRootAsHeader(t),r=s.featuresCount().toFloat64(),n=s.indexNodeSize(),o=[];for(let t=0;t<s.columnsLength();t++){const i=s.columns(t);if(!i)throw new Error("Column unexpectedly missing");if(!i.name())throw new Error("Column name unexpectedly missing");o.push(new 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Uint32Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}xy(t){const e=this.bb.__offset(this.bb_pos,6);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}xyLength(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.__vector_len(this.bb_pos+t):0}xyArray(){const t=this.bb.__offset(this.bb_pos,6);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}z(t){const e=this.bb.__offset(this.bb_pos,8);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}zLength(){const t=this.bb.__offset(this.bb_pos,8);return t?this.bb.__vector_len(this.bb_pos+t):0}zArray(){const t=this.bb.__offset(this.bb_pos,8);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}m(t){const e=this.bb.__offset(this.bb_pos,10);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}mLength(){const t=this.bb.__offset(this.bb_pos,10);return t?this.bb.__vector_len(this.bb_pos+t):0}mArray(){const t=this.bb.__offset(this.bb_pos,10);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}t(t){const e=this.bb.__offset(this.bb_pos,12);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}tLength(){const t=this.bb.__offset(this.bb_pos,12);return t?this.bb.__vector_len(this.bb_pos+t):0}tArray(){const t=this.bb.__offset(this.bb_pos,12);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}tm(t){const e=this.bb.__offset(this.bb_pos,14);return e?this.bb.readUint64(this.bb.__vector(this.bb_pos+e)+8*t):this.bb.createLong(0,0)}tmLength(){const t=this.bb.__offset(this.bb_pos,14);return t?this.bb.__vector_len(this.bb_pos+t):0}type(){const t=this.bb.__offset(this.bb_pos,16);return t?this.bb.readUint8(this.bb_pos+t):c.Unknown}parts(t,e){const s=this.bb.__offset(this.bb_pos,18);return s?(e||new g).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos+s)+4*t),this.bb):null}partsLength(){const t=this.bb.__offset(this.bb_pos,18);return t?this.bb.__vector_len(this.bb_pos+t):0}static startGeometry(t){t.startObject(8)}static addEnds(t,e){t.addFieldOffset(0,e,0)}static createEndsVector(t,e){t.startVector(4,e.length,4);for(let s=e.length-1;s>=0;s--)t.addInt32(e[s]);return t.endVector()}static startEndsVector(t,e){t.startVector(4,e,4)}static addXy(t,e){t.addFieldOffset(1,e,0)}static createXyVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addFloat64(e[s]);return t.endVector()}static startXyVector(t,e){t.startVector(8,e,8)}static addZ(t,e){t.addFieldOffset(2,e,0)}static createZVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addFloat64(e[s]);return t.endVector()}static startZVector(t,e){t.startVector(8,e,8)}static addM(t,e){t.addFieldOffset(3,e,0)}static createMVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addFloat64(e[s]);return t.endVector()}static startMVector(t,e){t.startVector(8,e,8)}static addT(t,e){t.addFieldOffset(4,e,0)}static createTVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addFloat64(e[s]);return t.endVector()}static startTVector(t,e){t.startVector(8,e,8)}static addTm(t,e){t.addFieldOffset(5,e,0)}static createTmVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addInt64(e[s]);return t.endVector()}static startTmVector(t,e){t.startVector(8,e,8)}static addType(t,e){t.addFieldInt8(6,e,c.Unknown)}static addParts(t,e){t.addFieldOffset(7,e,0)}static createPartsVector(t,e){t.startVector(4,e.length,4);for(let s=e.length-1;s>=0;s--)t.addOffset(e[s]);return t.endVector()}static startPartsVector(t,e){t.startVector(4,e,4)}static endGeometry(t){return t.endObject()}static createGeometry(t,e,s,i,r,n,o,a,b){return g.startGeometry(t),g.addEnds(t,e),g.addXy(t,s),g.addZ(t,i),g.addM(t,r),g.addT(t,n),g.addTm(t,o),g.addType(t,a),g.addParts(t,b),g.endGeometry(t)}}function y(t,e,s){if(0!==t.length)if(Array.isArray(t[0]))for(const i of t)y(i,e,s);else 2===t.length?e.push(...t):(e.push(t[0],t[1]),s.push(t[2]))}function w(t,e){const s=[];for(let i=0;i<t.length;i+=2){const r=[t[i],t[i+1]];e&&r.push(e[i>>1]),s.push(r)}return s}function m(t){return t?c[t]:c.Unknown}function v(t){const e=t.coordinates,s=[],i=[];let r,n;const o=m(t.type);let a=0;switch(t.type){case"Point":y(e,s,i);break;case"MultiPoint":case"LineString":y(e,s,i);break;case"MultiLineString":case"Polygon":{const t=e;y(t,s,i),t.length>1&&(r=t.map(t=>a+=t.length));break}case"MultiPolygon":n=e.map(t=>({type:"Polygon",coordinates:t})).map(v);break;case"GeometryCollection":t.geometries&&(n=t.geometries.map(v))}return{xy:s,z:i.length>0?i:void 0,ends:r,type:o,parts:n}}function I(t,e){if(e===c.GeometryCollection){const s=[];for(let e=0;e<t.partsLength();e++){const i=t.parts(e),r=i.type();s.push(I(i,r))}return{type:c[e],geometries:s}}if(e===c.MultiPolygon){const s=[];for(let e=0;e<t.partsLength();e++)s.push(I(t.parts(e),c.Polygon));return{type:c[e],coordinates:s.map(t=>t.coordinates)}}const s=function(t,e){const s=t.xyArray(),i=t.zArray();switch(e){case c.Point:{const t=Array.from(s);return i&&t.push(i[0]),t}case c.MultiPoint:case c.LineString:return w(s,i);case c.MultiLineString:case c.Polygon:return function(t,e,s){if(!s||0===s.length)return[w(t,e)];let i=0;const r=Array.from(s).map(e=>t.slice(i,i=e<<1));let n;return e&&(i=0,n=Array.from(s).map(t=>e.slice(i,i=t))),r.map((t,e)=>w(t,n?n[e]:void 0))}(s,i,t.endsArray())}}(t,e);return{type:c[e],coordinates:s}}class F{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsFeature(t,e){return(e||new F).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsFeature(t,e){return t.setPosition(t.position()+4),(e||new F).__init(t.readInt32(t.position())+t.position(),t)}geometry(t){const e=this.bb.__offset(this.bb_pos,4);return e?(t||new g).__init(this.bb.__indirect(this.bb_pos+e),this.bb):null}properties(t){const e=this.bb.__offset(this.bb_pos,6);return e?this.bb.readUint8(this.bb.__vector(this.bb_pos+e)+t):0}propertiesLength(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.__vector_len(this.bb_pos+t):0}propertiesArray(){const t=this.bb.__offset(this.bb_pos,6);return t?new Uint8Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}columns(t,e){const s=this.bb.__offset(this.bb_pos,8);return s?(e||new u).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos+s)+4*t),this.bb):null}columnsLength(){const t=this.bb.__offset(this.bb_pos,8);return t?this.bb.__vector_len(this.bb_pos+t):0}static startFeature(t){t.startObject(3)}static addGeometry(t,e){t.addFieldOffset(0,e,0)}static addProperties(t,e){t.addFieldOffset(1,e,0)}static createPropertiesVector(t,e){t.startVector(1,e.length,1);for(let s=e.length-1;s>=0;s--)t.addInt8(e[s]);return t.endVector()}static startPropertiesVector(t,e){t.startVector(1,e,1)}static addColumns(t,e){t.addFieldOffset(2,e,0)}static createColumnsVector(t,e){t.startVector(4,e.length,4);for(let s=e.length-1;s>=0;s--)t.addOffset(e[s]);return t.endVector()}static startColumnsVector(t,e){t.startVector(4,e,4)}static endFeature(t){return t.endObject()}static finishFeatureBuffer(t,e){t.finish(e)}static finishSizePrefixedFeatureBuffer(t,e){t.finish(e,void 0,!0)}static createFeature(t,e,s,i){return F.startFeature(t),F.addGeometry(t,e),F.addProperties(t,s),F.addColumns(t,i),F.endFeature(t)}}const U=new TextEncoder,O=new TextDecoder;function S(t,e,i){const r=i.columns,n=new l;let o=0,a=1024,b=new Uint8Array(a),h=new DataView(b.buffer);const c=function(t){if(o+t<a)return;a*=2;const e=new Uint8Array(a);e.set(b),b=e,h=new DataView(b.buffer,o)};if(r)for(let t=0;t<r.length;t++){const i=r[t],n=e[i.name];if(null!==n)switch(h.setUint16(o,t,!0),o+=2,i.type){case s.Bool:c(1),h.setUint8(o,n),o+=1;break;case s.Short:c(2),h.setInt16(o,n,!0),o+=2;break;case s.UShort:c(2),h.setUint16(o,n,!0),o+=2;break;case s.Int:c(4),h.setInt32(o,n,!0),o+=4;break;case s.UInt:c(4),h.setUint32(o,n,!0),o+=4;break;case s.Long:c(8),h.setBigInt64(o,BigInt(n),!0),o+=8;break;case s.Double:c(8),h.setFloat64(o,n,!0),o+=8;break;case s.DateTime:case s.String:{const t=U.encode(n);c(4),h.setUint32(o,t.length,!0),o+=4,c(t.length),b.set(t,o),o+=t.length;break}default:throw new Error("Unknown type "+i.type)}}let d=null;o>0&&(d=F.createPropertiesVector(n,b.slice(0,o)));const u=function t(e,s){const{xy:i,z:r,ends:n,parts:o,type:a}=s;if(o){const s=o.map(s=>t(e,s)),i=g.createPartsVector(e,s);return g.startGeometry(e),g.addParts(e,i),g.endGeometry(e)}const b=g.createXyVector(e,i);let h,c;return r&&(h=g.createZVector(e,r)),n&&(c=g.createEndsVector(e,n)),g.startGeometry(e),c&&g.addEnds(e,c),g.addXy(e,b),h&&g.addZ(e,h),g.addType(e,a),g.endGeometry(e)}(n,t);F.startFeature(n),F.addGeometry(n,u),d&&F.addProperties(n,d);const f=F.endFeature(n);return n.finishSizePrefixed(f),n.asUint8Array()}function C(t,e){const i=e.columns,r={type:"Feature",geometry:I(t.geometry(),e.geometryType)};return i&&i.length>0&&(r.properties=function(t,e){const i={};if(!e||0===e.length)return i;const r=t.propertiesArray();if(!r)return i;const n=new DataView(r.buffer,r.byteOffset),o=t.propertiesLength();let a=0;for(;a<o;){const t=n.getUint16(a,!0);a+=2;const o=e[t],b=o.name;switch(o.type){case s.Bool:i[b]=!!n.getUint8(a),a+=1;break;case s.Byte:i[b]=n.getInt8(a),a+=1;break;case s.UByte:i[b]=n.getUint8(a),a+=1;break;case s.Short:i[b]=n.getInt16(a,!0),a+=2;break;case s.UShort:i[b]=n.getUint16(a,!0),a+=2;break;case s.Int:i[b]=n.getInt32(a,!0),a+=4;break;case s.UInt:i[b]=n.getUint32(a,!0),a+=4;break;case s.Long:i[b]=Number(n.getBigInt64(a,!0)),a+=8;break;case s.ULong:i[b]=Number(n.getBigUint64(a,!0)),a+=8;break;case s.Double:i[b]=n.getFloat64(a,!0),a+=8;break;case s.DateTime:case s.String:{const t=n.getUint32(a,!0);a+=4,i[b]=O.decode(r.subarray(a,a+t)),a+=t;break}default:throw new Error("Unknown type "+o.type)}}return i}(t,i)),r}var A,V=new Uint8Array(0);function P(t,e){if(!t.length)return e;if(!e.length)return t;var s=new Uint8Array(t.length+e.length);return s.set(t),s.set(e,t.length),s}function x(t){this._source=t,this._array=V,this._index=0}x.prototype.read=function(){var t=this,e=t._array.subarray(t._index);return t._source.read().then((function(s){return 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s=this.bb.capacity()-t,i=s-this.bb.readInt32(s);if(0==this.bb.readInt16(i+e))throw new Error("FlatBuffers: field "+e+" must be set")}startVector(t,e,s){this.notNested(),this.vector_num_elems=e,this.prep(4,t*e),this.prep(s,t*e)}endVector(){return this.writeInt32(this.vector_num_elems),this.offset()}createSharedString(t){if(!t)return 0;if(this.string_maps||(this.string_maps=new Map),this.string_maps.has(t))return this.string_maps.get(t);const e=this.createString(t);return this.string_maps.set(t,e),e}createString(t){if(!t)return 0;let e;if(t instanceof Uint8Array)e=t;else{e=[];let s=0;for(;s<t.length;){let i;const r=t.charCodeAt(s++);i=r<55296||r>=56320?r:(r<<10)+t.charCodeAt(s++)+-56613888,i<128?e.push(i):(i<2048?e.push(i>>6&31|192):(i<65536?e.push(i>>12&15|224):e.push(i>>18&7|240,i>>12&63|128),e.push(i>>6&63|128)),e.push(63&i|128))}}this.addInt8(0),this.startVector(1,e.length,1),this.bb.setPosition(this.space-=e.length);for(let t=0,s=this.space,i=this.bb.bytes();t<e.length;t++)i[s++]=e[t];return this.endVector()}createLong(t,e){return b.create(t,e)}createObjectOffset(t){return null===t?0:"string"==typeof t?this.createString(t):t.pack(this)}createObjectOffsetList(t){const e=[];for(let s=0;s<t.length;++s){const i=t[s];if(null===i)throw new Error("FlatBuffers: Argument for createObjectOffsetList cannot contain null.");e.push(this.createObjectOffset(i))}return e}createStructOffsetList(t,e){return e(this,t.length),this.createObjectOffsetList(t),this.endVector()}}class u{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsColumn(t,e){return(e||new u).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsColumn(t,e){return t.setPosition(t.position()+4),(e||new u).__init(t.readInt32(t.position())+t.position(),t)}name(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.__string(this.bb_pos+e,t):null}type(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.readUint8(this.bb_pos+t):s.Byte}title(t){const e=this.bb.__offset(this.bb_pos,8);return e?this.bb.__string(this.bb_pos+e,t):null}description(t){const e=this.bb.__offset(this.bb_pos,10);return e?this.bb.__string(this.bb_pos+e,t):null}width(){const t=this.bb.__offset(this.bb_pos,12);return t?this.bb.readInt32(this.bb_pos+t):-1}precision(){const t=this.bb.__offset(this.bb_pos,14);return t?this.bb.readInt32(this.bb_pos+t):-1}scale(){const t=this.bb.__offset(this.bb_pos,16);return t?this.bb.readInt32(this.bb_pos+t):-1}nullable(){const t=this.bb.__offset(this.bb_pos,18);return!t||!!this.bb.readInt8(this.bb_pos+t)}unique(){const t=this.bb.__offset(this.bb_pos,20);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}primaryKey(){const t=this.bb.__offset(this.bb_pos,22);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}metadata(t){const e=this.bb.__offset(this.bb_pos,24);return e?this.bb.__string(this.bb_pos+e,t):null}static startColumn(t){t.startObject(11)}static addName(t,e){t.addFieldOffset(0,e,0)}static addType(t,e){t.addFieldInt8(1,e,s.Byte)}static addTitle(t,e){t.addFieldOffset(2,e,0)}static addDescription(t,e){t.addFieldOffset(3,e,0)}static addWidth(t,e){t.addFieldInt32(4,e,-1)}static addPrecision(t,e){t.addFieldInt32(5,e,-1)}static addScale(t,e){t.addFieldInt32(6,e,-1)}static addNullable(t,e){t.addFieldInt8(7,+e,1)}static addUnique(t,e){t.addFieldInt8(8,+e,0)}static addPrimaryKey(t,e){t.addFieldInt8(9,+e,0)}static addMetadata(t,e){t.addFieldOffset(10,e,0)}static endColumn(t){const e=t.endObject();return t.requiredField(e,4),e}static createColumn(t,e,s,i,r,n,o,a,b,h,c,d){return u.startColumn(t),u.addName(t,e),u.addType(t,s),u.addTitle(t,i),u.addDescription(t,r),u.addWidth(t,n),u.addPrecision(t,o),u.addScale(t,a),u.addNullable(t,b),u.addUnique(t,h),u.addPrimaryKey(t,c),u.addMetadata(t,d),u.endColumn(t)}}class f{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsCrs(t,e){return(e||new f).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsCrs(t,e){return t.setPosition(t.position()+4),(e||new f).__init(t.readInt32(t.position())+t.position(),t)}org(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.__string(this.bb_pos+e,t):null}code(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.readInt32(this.bb_pos+t):0}name(t){const e=this.bb.__offset(this.bb_pos,8);return e?this.bb.__string(this.bb_pos+e,t):null}description(t){const e=this.bb.__offset(this.bb_pos,10);return e?this.bb.__string(this.bb_pos+e,t):null}wkt(t){const e=this.bb.__offset(this.bb_pos,12);return e?this.bb.__string(this.bb_pos+e,t):null}codeString(t){const e=this.bb.__offset(this.bb_pos,14);return e?this.bb.__string(this.bb_pos+e,t):null}static startCrs(t){t.startObject(6)}static addOrg(t,e){t.addFieldOffset(0,e,0)}static addCode(t,e){t.addFieldInt32(1,e,0)}static addName(t,e){t.addFieldOffset(2,e,0)}static addDescription(t,e){t.addFieldOffset(3,e,0)}static addWkt(t,e){t.addFieldOffset(4,e,0)}static addCodeString(t,e){t.addFieldOffset(5,e,0)}static endCrs(t){return t.endObject()}static createCrs(t,e,s,i,r,n,o){return f.startCrs(t),f.addOrg(t,e),f.addCode(t,s),f.addName(t,i),f.addDescription(t,r),f.addWkt(t,n),f.addCodeString(t,o),f.endCrs(t)}}!function(t){t[t.Unknown=0]="Unknown",t[t.Point=1]="Point",t[t.LineString=2]="LineString",t[t.Polygon=3]="Polygon",t[t.MultiPoint=4]="MultiPoint",t[t.MultiLineString=5]="MultiLineString",t[t.MultiPolygon=6]="MultiPolygon",t[t.GeometryCollection=7]="GeometryCollection",t[t.CircularString=8]="CircularString",t[t.CompoundCurve=9]="CompoundCurve",t[t.CurvePolygon=10]="CurvePolygon",t[t.MultiCurve=11]="MultiCurve",t[t.MultiSurface=12]="MultiSurface",t[t.Curve=13]="Curve",t[t.Surface=14]="Surface",t[t.PolyhedralSurface=15]="PolyhedralSurface",t[t.TIN=16]="TIN",t[t.Triangle=17]="Triangle"}(c||(c={}));class _{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsHeader(t,e){return(e||new _).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsHeader(t,e){return t.setPosition(t.position()+4),(e||new _).__init(t.readInt32(t.position())+t.position(),t)}name(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.__string(this.bb_pos+e,t):null}envelope(t){const e=this.bb.__offset(this.bb_pos,6);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}envelopeLength(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.__vector_len(this.bb_pos+t):0}envelopeArray(){const t=this.bb.__offset(this.bb_pos,6);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}geometryType(){const t=this.bb.__offset(this.bb_pos,8);return t?this.bb.readUint8(this.bb_pos+t):c.Unknown}hasZ(){const t=this.bb.__offset(this.bb_pos,10);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}hasM(){const t=this.bb.__offset(this.bb_pos,12);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}hasT(){const t=this.bb.__offset(this.bb_pos,14);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}hasTm(){const t=this.bb.__offset(this.bb_pos,16);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}columns(t,e){const s=this.bb.__offset(this.bb_pos,18);return s?(e||new u).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos+s)+4*t),this.bb):null}columnsLength(){const t=this.bb.__offset(this.bb_pos,18);return t?this.bb.__vector_len(this.bb_pos+t):0}featuresCount(){const t=this.bb.__offset(this.bb_pos,20);return t?this.bb.readUint64(this.bb_pos+t):this.bb.createLong(0,0)}indexNodeSize(){const t=this.bb.__offset(this.bb_pos,22);return t?this.bb.readUint16(this.bb_pos+t):16}crs(t){const e=this.bb.__offset(this.bb_pos,24);return e?(t||new f).__init(this.bb.__indirect(this.bb_pos+e),this.bb):null}title(t){const e=this.bb.__offset(this.bb_pos,26);return e?this.bb.__string(this.bb_pos+e,t):null}description(t){const e=this.bb.__offset(this.bb_pos,28);return e?this.bb.__string(this.bb_pos+e,t):null}metadata(t){const e=this.bb.__offset(this.bb_pos,30);return e?this.bb.__string(this.bb_pos+e,t):null}static startHeader(t){t.startObject(14)}static addName(t,e){t.addFieldOffset(0,e,0)}static addEnvelope(t,e){t.addFieldOffset(1,e,0)}static createEnvelopeVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addFloat64(e[s]);return t.endVector()}static startEnvelopeVector(t,e){t.startVector(8,e,8)}static addGeometryType(t,e){t.addFieldInt8(2,e,c.Unknown)}static addHasZ(t,e){t.addFieldInt8(3,+e,0)}static addHasM(t,e){t.addFieldInt8(4,+e,0)}static addHasT(t,e){t.addFieldInt8(5,+e,0)}static addHasTm(t,e){t.addFieldInt8(6,+e,0)}static addColumns(t,e){t.addFieldOffset(7,e,0)}static createColumnsVector(t,e){t.startVector(4,e.length,4);for(let s=e.length-1;s>=0;s--)t.addOffset(e[s]);return t.endVector()}static startColumnsVector(t,e){t.startVector(4,e,4)}static addFeaturesCount(t,e){t.addFieldInt64(8,e,t.createLong(0,0))}static addIndexNodeSize(t,e){t.addFieldInt16(9,e,16)}static addCrs(t,e){t.addFieldOffset(10,e,0)}static addTitle(t,e){t.addFieldOffset(11,e,0)}static addDescription(t,e){t.addFieldOffset(12,e,0)}static addMetadata(t,e){t.addFieldOffset(13,e,0)}static endHeader(t){return t.endObject()}static finishHeaderBuffer(t,e){t.finish(e)}static finishSizePrefixedHeaderBuffer(t,e){t.finish(e,void 0,!0)}}class p{constructor(t,e,s,i,r,n,o,a){this.geometryType=t,this.columns=e,this.featuresCount=s,this.indexNodeSize=i,this.crs=r,this.title=n,this.description=o,this.metadata=a}static fromByteBuffer(t){const s=_.getRootAsHeader(t),r=s.featuresCount().toFloat64(),n=s.indexNodeSize(),o=[];for(let t=0;t<s.columnsLength();t++){const i=s.columns(t);if(!i)throw new Error("Column unexpectedly missing");if(!i.name())throw new Error("Column name unexpectedly missing");o.push(new e(i.name(),i.type(),i.title(),i.description(),i.width(),i.precision(),i.scale(),i.nullable(),i.unique(),i.primaryKey()))}const a=s.crs(),b=a?new i(a.org(),a.code(),a.name(),a.description(),a.wkt(),a.codeString()):null;return new p(s.geometryType(),o,r,n,b,s.title(),s.description(),s.metadata())}}class g{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsGeometry(t,e){return(e||new g).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsGeometry(t,e){return t.setPosition(t.position()+4),(e||new g).__init(t.readInt32(t.position())+t.position(),t)}ends(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.readUint32(this.bb.__vector(this.bb_pos+e)+4*t):0}endsLength(){const t=this.bb.__offset(this.bb_pos,4);return t?this.bb.__vector_len(this.bb_pos+t):0}endsArray(){const t=this.bb.__offset(this.bb_pos,4);return t?new Uint32Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}xy(t){const e=this.bb.__offset(this.bb_pos,6);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}xyLength(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.__vector_len(this.bb_pos+t):0}xyArray(){const t=this.bb.__offset(this.bb_pos,6);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}z(t){const e=this.bb.__offset(this.bb_pos,8);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}zLength(){const t=this.bb.__offset(this.bb_pos,8);return t?this.bb.__vector_len(this.bb_pos+t):0}zArray(){const t=this.bb.__offset(this.bb_pos,8);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}m(t){const e=this.bb.__offset(this.bb_pos,10);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}mLength(){const t=this.bb.__offset(this.bb_pos,10);return t?this.bb.__vector_len(this.bb_pos+t):0}mArray(){const t=this.bb.__offset(this.bb_pos,10);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}t(t){const e=this.bb.__offset(this.bb_pos,12);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}tLength(){const t=this.bb.__offset(this.bb_pos,12);return t?this.bb.__vector_len(this.bb_pos+t):0}tArray(){const t=this.bb.__offset(this.bb_pos,12);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}tm(t){const e=this.bb.__offset(this.bb_pos,14);return e?this.bb.readUint64(this.bb.__vector(this.bb_pos+e)+8*t):this.bb.createLong(0,0)}tmLength(){const t=this.bb.__offset(this.bb_pos,14);return t?this.bb.__vector_len(this.bb_pos+t):0}type(){const t=this.bb.__offset(this.bb_pos,16);return t?this.bb.readUint8(this.bb_pos+t):c.Unknown}parts(t,e){const s=this.bb.__offset(this.bb_pos,18);return s?(e||new g).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos+s)+4*t),this.bb):null}partsLength(){const t=this.bb.__offset(this.bb_pos,18);return t?this.bb.__vector_len(this.bb_pos+t):0}static startGeometry(t){t.startObject(8)}static addEnds(t,e){t.addFieldOffset(0,e,0)}static createEndsVector(t,e){t.startVector(4,e.length,4);for(let s=e.length-1;s>=0;s--)t.addInt32(e[s]);return t.endVector()}static startEndsVector(t,e){t.startVector(4,e,4)}static addXy(t,e){t.addFieldOffset(1,e,0)}static createXyVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addFloat64(e[s]);return t.endVector()}static startXyVector(t,e){t.startVector(8,e,8)}static addZ(t,e){t.addFieldOffset(2,e,0)}static createZVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addFloat64(e[s]);return t.endVector()}static startZVector(t,e){t.startVector(8,e,8)}static addM(t,e){t.addFieldOffset(3,e,0)}static createMVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addFloat64(e[s]);return t.endVector()}static startMVector(t,e){t.startVector(8,e,8)}static addT(t,e){t.addFieldOffset(4,e,0)}static createTVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addFloat64(e[s]);return t.endVector()}static startTVector(t,e){t.startVector(8,e,8)}static addTm(t,e){t.addFieldOffset(5,e,0)}static createTmVector(t,e){t.startVector(8,e.length,8);for(let s=e.length-1;s>=0;s--)t.addInt64(e[s]);return t.endVector()}static startTmVector(t,e){t.startVector(8,e,8)}static addType(t,e){t.addFieldInt8(6,e,c.Unknown)}static addParts(t,e){t.addFieldOffset(7,e,0)}static createPartsVector(t,e){t.startVector(4,e.length,4);for(let s=e.length-1;s>=0;s--)t.addOffset(e[s]);return t.endVector()}static startPartsVector(t,e){t.startVector(4,e,4)}static endGeometry(t){return t.endObject()}static createGeometry(t,e,s,i,r,n,o,a,b){return g.startGeometry(t),g.addEnds(t,e),g.addXy(t,s),g.addZ(t,i),g.addM(t,r),g.addT(t,n),g.addTm(t,o),g.addType(t,a),g.addParts(t,b),g.endGeometry(t)}}function y(t,e,s){if(0!==t.length)if(Array.isArray(t[0]))for(const i of t)y(i,e,s);else 2===t.length?e.push(...t):(e.push(t[0],t[1]),s.push(t[2]))}function w(t,e){const s=[];for(let i=0;i<t.length;i+=2){const r=[t[i],t[i+1]];e&&r.push(e[i>>1]),s.push(r)}return s}function m(t){return t?c[t]:c.Unknown}function v(t){const e=t.coordinates,s=[],i=[];let r,n;const o=m(t.type);let a=0;switch(t.type){case"Point":y(e,s,i);break;case"MultiPoint":case"LineString":y(e,s,i);break;case"MultiLineString":case"Polygon":{const t=e;y(t,s,i),t.length>1&&(r=t.map(t=>a+=t.length));break}case"MultiPolygon":n=e.map(t=>({type:"Polygon",coordinates:t})).map(v);break;case"GeometryCollection":t.geometries&&(n=t.geometries.map(v))}return{xy:s,z:i.length>0?i:void 0,ends:r,type:o,parts:n}}function I(t,e){if(e===c.GeometryCollection){const s=[];for(let e=0;e<t.partsLength();e++){const i=t.parts(e),r=i.type();s.push(I(i,r))}return{type:c[e],geometries:s}}if(e===c.MultiPolygon){const s=[];for(let e=0;e<t.partsLength();e++)s.push(I(t.parts(e),c.Polygon));return{type:c[e],coordinates:s.map(t=>t.coordinates)}}const s=function(t,e){const s=t.xyArray(),i=t.zArray();switch(e){case c.Point:{const t=Array.from(s);return i&&t.push(i[0]),t}case c.MultiPoint:case c.LineString:return w(s,i);case c.MultiLineString:case c.Polygon:return function(t,e,s){if(!s||0===s.length)return[w(t,e)];let i=0;const r=Array.from(s).map(e=>t.slice(i,i=e<<1));let n;return e&&(i=0,n=Array.from(s).map(t=>e.slice(i,i=t))),r.map((t,e)=>w(t,n?n[e]:void 0))}(s,i,t.endsArray())}}(t,e);return{type:c[e],coordinates:s}}class F{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsFeature(t,e){return(e||new F).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsFeature(t,e){return t.setPosition(t.position()+4),(e||new F).__init(t.readInt32(t.position())+t.position(),t)}geometry(t){const e=this.bb.__offset(this.bb_pos,4);return e?(t||new g).__init(this.bb.__indirect(this.bb_pos+e),this.bb):null}properties(t){const e=this.bb.__offset(this.bb_pos,6);return e?this.bb.readUint8(this.bb.__vector(this.bb_pos+e)+t):0}propertiesLength(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.__vector_len(this.bb_pos+t):0}propertiesArray(){const t=this.bb.__offset(this.bb_pos,6);return t?new Uint8Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}columns(t,e){const s=this.bb.__offset(this.bb_pos,8);return s?(e||new u).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos+s)+4*t),this.bb):null}columnsLength(){const t=this.bb.__offset(this.bb_pos,8);return t?this.bb.__vector_len(this.bb_pos+t):0}static startFeature(t){t.startObject(3)}static addGeometry(t,e){t.addFieldOffset(0,e,0)}static addProperties(t,e){t.addFieldOffset(1,e,0)}static createPropertiesVector(t,e){t.startVector(1,e.length,1);for(let s=e.length-1;s>=0;s--)t.addInt8(e[s]);return t.endVector()}static startPropertiesVector(t,e){t.startVector(1,e,1)}static addColumns(t,e){t.addFieldOffset(2,e,0)}static createColumnsVector(t,e){t.startVector(4,e.length,4);for(let s=e.length-1;s>=0;s--)t.addOffset(e[s]);return t.endVector()}static startColumnsVector(t,e){t.startVector(4,e,4)}static endFeature(t){return t.endObject()}static finishFeatureBuffer(t,e){t.finish(e)}static finishSizePrefixedFeatureBuffer(t,e){t.finish(e,void 0,!0)}static createFeature(t,e,s,i){return F.startFeature(t),F.addGeometry(t,e),F.addProperties(t,s),F.addColumns(t,i),F.endFeature(t)}}const U=new TextEncoder,O=new TextDecoder;function S(t,e,i){const r=i.columns,n=new l;let o=0,a=1024,b=new Uint8Array(a),h=new DataView(b.buffer);const c=function(t){if(o+t<a)return;a*=2;const e=new Uint8Array(a);e.set(b),b=e,h=new DataView(b.buffer,o)};if(r)for(let t=0;t<r.length;t++){const i=r[t],n=e[i.name];if(null!==n)switch(h.setUint16(o,t,!0),o+=2,i.type){case s.Bool:c(1),h.setUint8(o,n),o+=1;break;case s.Short:c(2),h.setInt16(o,n,!0),o+=2;break;case s.UShort:c(2),h.setUint16(o,n,!0),o+=2;break;case s.Int:c(4),h.setInt32(o,n,!0),o+=4;break;case s.UInt:c(4),h.setUint32(o,n,!0),o+=4;break;case s.Long:c(8),h.setBigInt64(o,BigInt(n),!0),o+=8;break;case s.Double:c(8),h.setFloat64(o,n,!0),o+=8;break;case s.DateTime:case s.String:{const t=U.encode(n);c(4),h.setUint32(o,t.length,!0),o+=4,c(t.length),b.set(t,o),o+=t.length;break}default:throw new Error("Unknown type "+i.type)}}let d=null;o>0&&(d=F.createPropertiesVector(n,b.slice(0,o)));const u=function t(e,s){const{xy:i,z:r,ends:n,parts:o,type:a}=s;if(o){const s=o.map(s=>t(e,s)),i=g.createPartsVector(e,s);return g.startGeometry(e),g.addParts(e,i),g.endGeometry(e)}const b=g.createXyVector(e,i);let h,c;return r&&(h=g.createZVector(e,r)),n&&(c=g.createEndsVector(e,n)),g.startGeometry(e),c&&g.addEnds(e,c),g.addXy(e,b),h&&g.addZ(e,h),g.addType(e,a),g.endGeometry(e)}(n,t);F.startFeature(n),F.addGeometry(n,u),d&&F.addProperties(n,d);const f=F.endFeature(n);return n.finishSizePrefixed(f),n.asUint8Array()}function C(t,e){const i=e.columns,r={type:"Feature",geometry:I(t.geometry(),e.geometryType)};return i&&i.length>0&&(r.properties=function(t,e){const i={};if(!e||0===e.length)return i;const r=t.propertiesArray();if(!r)return i;const n=new DataView(r.buffer,r.byteOffset),o=t.propertiesLength();let a=0;for(;a<o;){const t=n.getUint16(a,!0);a+=2;const o=e[t],b=o.name;switch(o.type){case s.Bool:i[b]=!!n.getUint8(a),a+=1;break;case s.Byte:i[b]=n.getInt8(a),a+=1;break;case s.UByte:i[b]=n.getUint8(a),a+=1;break;case s.Short:i[b]=n.getInt16(a,!0),a+=2;break;case s.UShort:i[b]=n.getUint16(a,!0),a+=2;break;case s.Int:i[b]=n.getInt32(a,!0),a+=4;break;case s.UInt:i[b]=n.getUint32(a,!0),a+=4;break;case s.Long:i[b]=Number(n.getBigInt64(a,!0)),a+=8;break;case s.ULong:i[b]=Number(n.getBigUint64(a,!0)),a+=8;break;case s.Double:i[b]=n.getFloat64(a,!0),a+=8;break;case s.DateTime:case s.String:{const t=n.getUint32(a,!0);a+=4,i[b]=O.decode(r.subarray(a,a+t)),a+=t;break}default:throw new Error("Unknown type "+o.type)}}return i}(t,i)),r}var A,V=new Uint8Array(0);function P(t,e){if(!t.length)return e;if(!e.length)return t;var s=new Uint8Array(t.length+e.length);return s.set(t),s.set(e,t.length),s}function x(t){this._source=t,this._array=V,this._index=0}x.prototype.read=function(){var t=this,e=t._array.subarray(t._index);return t._source.read().then((function(s){return t._array=V,t._index=0,s.done?e.length>0?{done:!1,value:e}:{done:!0,value:void 0}:{done:!1,value:P(e,s.value)}}))},x.prototype.slice=function(t){if((t|=0)<0)throw new Error("invalid length");var e=this,s=this._array.length-this._index;if(this._index+t<=this._array.length)return Promise.resolve(this._array.subarray(this._index,this._index+=t));var i=new Uint8Array(t);return i.set(this._array.subarray(this._index)),function r(){return e._source.read().then((function(n){return n.done?(e._array=V,e._index=0,s>0?i.subarray(0,s):null):s+n.value.length>=t?(e._array=n.value,e._index=t-s,i.set(n.value.subarray(0,t-s),s),i):(i.set(n.value,s),s+=n.value.length,r())}))}()},x.prototype.cancel=function(){return this._source.cancel()},function(t){t[t.Debug=0]="Debug",t[t.Info=1]="Info",t[t.Warn=2]="Warn",t[t.Error=3]="Error"}(A||(A={}));class B{static debug(...t){this.log(A.Debug,...t)}static info(...t){this.log(A.Info,...t)}static warn(...t){this.log(A.Warn,...t)}static error(...t){this.log(A.Error,...t)}static log(t,...e){if(!(this.logLevel>t))switch(t){case A.Debug:console.debug(...e);break;case A.Info:console.info(...e);break;case A.Warn:console.warn(...e);break;case A.Error:console.error(...e)}}}function L(t,e){e=Math.min(Math.max(+e,2),65535);let s=t,i=s;do{s=Math.ceil(s/e),i+=s}while(1!==s);return 40*i}function T(t,e){if(0!=(4293918720&t))throw Error("integer is too large to be safely represented");return e+t*2**32}B.logLevel=A.Info;const N=new Uint8Array([102,103,98,3,102,103,98,0]);class E{constructor(t,e,s,i){this.headerClient=t,this.header=e,this.headerLength=s,this.indexLength=i}static async open(t){const e=new k(t),s=(()=>{let t,e=0;for(t=0;t<3;t++)e+=16**t*40;return e})(),i=2024+s;B.debug(`fetching header. minReqLength: ${i} (assumedHeaderLength: 2024, assumedIndexLength: ${s})`);{const t=new Uint8Array(await e.getRange(0,8,i,"header"));if(!t.every((t,e)=>N[e]===t))throw B.error(`bytes: ${t} != ${N}`),new Error("Not a FlatGeobuf file");B.debug("magic bytes look good")}let r;{const t=await e.getRange(8,4,i,"header");if(r=new DataView(t).getUint32(0,!0),r>10485760||r<8)throw new Error("Invalid header size");B.debug("headerLength: "+r)}const n=await e.getRange(12,r,i,"header"),o=new d(new Uint8Array(n)),a=p.fromByteBuffer(o),b=L(a.featuresCount,a.indexNodeSize);return B.debug("completed: opening http reader"),new E(e,a,r,b)}async*selectBbox(t){const e=this.lengthBeforeTree(),s=this.headerClient;B.debug("starting: selectBbox, traversing index. lengthBeforeTree: "+e),yield*async function*(t,e,s,i){class r{constructor(t,e){this._level=e,this.nodes=t}level(){return this._level}startNode(){return this.nodes[0]}endNode(){return this.nodes[1]}extendEndNodeToNewOffset(t){console.assert(t>this.nodes[1]),this.nodes[1]=t}toString(){return`[NodeRange level: ${this._level}, nodes: ${this.nodes[0]}-${this.nodes[1]}]`}}const{minX:n,minY:o,maxX:a,maxY:b}=s,h=function(t,e){if(e<2)throw new Error("Node size must be at least 2");if(0===t)throw new Error("Number of items must be greater than 0");let s=t,i=s;const r=[s];do{s=Math.ceil(s/e),i+=s,r.push(s)}while(1!==s);const n=[];s=i;for(const t of r)n.push(s-t),s-=t;n.reverse(),r.reverse();const o=[];for(let t=0;t<r.length;t++)o.push([n[t],n[t]+r[t]]);return o.reverse(),o}(t,e),c=h[0][0],d=[(()=>{const t=h.length-1;return new r([0,1],t)})()];for(B.debug(`starting stream search with queue: ${d}, numItems: ${t}, nodeSize: ${e}, levelBounds: ${h}`);0!=d.length;){const t=d.shift();B.debug(`popped node: ${t}, queueLength: ${d.length}`);let s=t.startNode();const l=s>=c,[,u]=h[t.level()],f=Math.min(t.endNode()+e,u),_=f-s,p=await i(40*s,40*_),g=new Float64Array(p),y=new Uint32Array(p);for(let e=s;e<f;e++){const i=5*(e-s);if(a<g[i+0])continue;if(b<g[i+1])continue;if(n>g[i+2])continue;if(o>g[i+3])continue;const h=y[8+(i<<1)],u=T(y[9+(i<<1)],h);if(l){B.debug("yielding feature"),yield[u,e-c];continue}const f=6553.6,_=d[d.length-1];if(void 0!==_&&_.level()==t.level()-1&&u<_.endNode()+f){B.debug(`Merging "nodeRange" request into existing range: ${_}, newOffset: ${_.endNode()} -> ${u}`),_.extendEndNodeToNewOffset(u);continue}let p=(()=>{let e=t.level()-1;return new r([u,u+1],e)})();void 0!==_&&_.level()==p.level()?B.debug(`Same level, but too far away. Pushing new request at offset: ${u} rather than merging with distant ${_}`):B.debug(`Pushing new level for ${p} onto queue with nearestNodeRange: ${_} since there's not already a range for this level.`),d.push(p)}}}(this.header.featuresCount,this.header.indexNodeSize,t,(async function(t,i){return s.getRange(e+t,i,0,"index")}))}lengthBeforeTree(){return N.length+4+this.headerLength}lengthBeforeFeatures(){return this.lengthBeforeTree()+this.indexLength}featureClient(){return void 0===this._featureClient&&(this._featureClient=this.headerClient.clone()),this._featureClient}async readFeature(t){const e=131072,s=t+this.lengthBeforeFeatures();let i;{const t=await this.featureClient().getRange(s,4,e,"feature length");i=new DataView(t).getUint32(0,!0)}B.debug(`featureOffset: ${s}, featureLength: ${i}`);const r=await this.featureClient().getRange(s+4,i,e,"feature data"),n=new Uint8Array(r),o=new Uint8Array(i+4);o.set(n,4);const a=new d(o);return a.setPosition(4),F.getRootAsFeature(a)}}class k{constructor(t){this.buffer=new ArrayBuffer(0),this.head=0,this.httpClient="string"==typeof t?new j(t):t}clone(){const t=new k(this.httpClient);return t.buffer=this.buffer.slice(0),t.head=this.head,t}async getRange(t,e,s,i){B.debug(`need Range: ${t}-${t+e-1}`);const r=t-this.head,n=r+e;if(r>=0&&n<this.buffer.byteLength)return B.debug(`slicing existing Range: ${r}-${n-1}`),this.buffer.slice(r,n);const o=Math.max(e,s);return this.buffer=await this.httpClient.getRange(t,o,i),this.head=t,this.buffer.slice(0,e)}}class j{constructor(t){this.requestsEverMade=0,this.bytesEverRequested=0,this.url=t}async getRange(t,e,s){this.requestsEverMade+=1,this.bytesEverRequested+=e;const i=`bytes=${t}-${t+e-1}`;return B.debug(`request: #${this.requestsEverMade}, purpose: ${s}), bytes: (this_request: ${e}, ever: ${this.bytesEverRequested}), Range: ${i}`),(await fetch(this.url,{headers:{Range:i}})).arrayBuffer()}}async function M(t,e,s){let i=new Uint8Array(await t(4,"feature length"));if(0===i.byteLength)return;let r=new d(i);const n=r.readUint32(0);i=new Uint8Array(await t(n,"feature data"));const o=new Uint8Array(n+4);return o.set(i,4),r=new d(o),r.setPosition(4),s(F.getRootAsFeature(r),e)}function R(t){const e=new l;let s=null;t.columns&&(s=_.createColumnsVector(e,t.columns.map(t=>function(t,e){const s=t.createString(e.name);return u.startColumn(t),u.addName(t,s),u.addType(t,e.type),u.endColumn(t)}(e,t))));const i=e.createString("L1");_.startHeader(e),_.addFeaturesCount(e,new b(t.featuresCount,0)),_.addGeometryType(e,t.geometryType),_.addIndexNodeSize(e,0),s&&_.addColumns(e,s),_.addName(e,i);const r=_.endHeader(e);return e.finishSizePrefixed(r),e.asUint8Array()}t.deserialize=function(t,e,s){return t instanceof Uint8Array?function(t,e){return{type:"FeatureCollection",features:function(t,e,s){if(!t.subarray(0,7).every((t,e)=>N[e]===t))throw new Error("Not a FlatGeobuf file");const i=new d(t),r=i.readUint32(N.length);i.setPosition(N.length+4);const n=p.fromByteBuffer(i);s&&s(n);let o=N.length+4+r;const{indexNodeSize:a,featuresCount:b}=n;a>0&&(o+=L(b,a));const h=[];for(;o<i.capacity();){const t=i.readUint32(o);i.setPosition(o+4);const s=F.getRootAsFeature(i);h.push(e(s,n)),o+=4+t}return h}(t,C,e)}}(t,s):t instanceof ReadableStream?function(t,e){return async function*(t,e,s){const i="function"==typeof(r=t).slice?r:new x("function"==typeof r.read?r:r.getReader());var r;const n=async t=>await i.slice(t);let o=new Uint8Array(await n(8));if(!o.every((t,e)=>N[e]===t))throw new Error("Not a FlatGeobuf file");o=new Uint8Array(await n(4));let a=new d(o);const b=a.readUint32(0);o=new Uint8Array(await n(b)),a=new d(o);const h=p.fromByteBuffer(a);s&&s(h);const{indexNodeSize:c,featuresCount:l}=h;if(c>0){const t=L(l,c);await n(t)}let u;for(;u=await M(n,h,e);)yield u}(t,C,e)}(t,s):function(t,e,s){return async function*(t,e,s,i){const r=await E.open(t);B.debug("opened reader"),i&&i(r.header);for await(const t of r.selectBbox(e)){const e=await r.readFeature(t[0]);yield s(e,r.header)}}(t,e,C,s)}(t,e,s)},t.serialize=function(t){return function(t){const i=function(t){const i=t.features[0],r=i.properties;let n=null;return r&&(n=Object.keys(r).map(t=>new e(t,function(t){if("boolean"==typeof t)return s.Bool;if("number"==typeof t)return t%1==0?s.Int:s.Double;if("string"==typeof t)return s.String;if(null===t)return s.String;throw new Error(`Unknown type (value '${t}')`)}(r[t]),null,null,-1,-1,-1,!0,!1,!1))),new p(m(i.geometry.type),n,t.features.length,0,null,null,null,null)}(t),r=R(i),n=t.features.map(t=>S(v(t.geometry),t.properties,i)),o=n.map(t=>t.length).reduce((t,e)=>t+e),a=new Uint8Array(N.length+r.length+o);a.set(r,N.length);let b=N.length+r.length;for(const t of n)a.set(t,b),b+=t.length;return a.set(N),a}(t)},Object.defineProperty(t,"__esModule",{value:!0})}(e)},function(t,e,s){(function(e){const i=s(3),r="undefined"==typeof window?e:window;r.loaders=r.loaders||{},t.exports=Object.assign(r.loaders,i)}).call(this,s(2))},function(t,e){var s;s=function(){return this}();try{s=s||new Function("return this")()}catch(t){"object"==typeof window&&(s=window)}t.exports=s},function(t,e,s){"use strict";s.r(e),s.d(e,"FlatGeobufLoader",(function(){return n}));var i=s(0);function r(t,e){if(0===t.byteLength)return[];const s=new Uint8Array(t),{features:r}=Object(i.deserialize)(s);return r}const n={...{id:"flatgeobuf",name:"FlatGeobuf",module:"flatgeobuf",version:"3.0.0-beta.8",worker:!0,extensions:["fgb"],category:"geometry",options:{flatgeobuf:{}}},parse:async(t,e)=>r(t),parseSync:r,parseInBatchesFromStream:function(t,e){return Object(i.deserializeStream)(t)},binary:!0}}])}));
 //# sourceMappingURL=dist.min.js.map

dist/es5/flatgeobuf-loader.js

@@ -28,3 +28,3 @@ "use strict";
 
-var VERSION = typeof "3.0.0-beta.7" !== 'undefined' ? "3.0.0-beta.7" : 'latest';
+var VERSION = typeof "3.0.0-beta.8" !== 'undefined' ? "3.0.0-beta.8" : 'latest';
 var FlatGeobufWorkerLoader = {
@@ -31,0 +31,0 @@ id: 'flatgeobuf',

dist/esm/flatgeobuf-loader.js

 import parseFlatGeobuf, { parseFlatGeobufInBatches } from './lib/parse-flatgeobuf';
-const VERSION = typeof "3.0.0-beta.7" !== 'undefined' ? "3.0.0-beta.7" : 'latest';
+const VERSION = typeof "3.0.0-beta.8" !== 'undefined' ? "3.0.0-beta.8" : 'latest';
 export const FlatGeobufWorkerLoader = {
@@ -4,0 +4,0 @@ id: 'flatgeobuf',

dist/flatgeobuf-worker.js

@@ -1,2 +0,2 @@
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r=e+1;for(;e>=0;e--)this.addInt16(0!=this.vtable[e]?t-this.vtable[e]:0);this.addInt16(t-this.object_start);const n=2*(r+2);this.addInt16(n);let s=0;const i=this.space;t:for(e=0;e<this.vtables.length;e++){const t=this.bb.capacity()-this.vtables[e];if(n==this.bb.readInt16(t)){for(let e=2;e<n;e+=2)if(this.bb.readInt16(i+e)!=this.bb.readInt16(t+e))continue t;s=this.vtables[e];break}}return s?(this.space=this.bb.capacity()-t,this.bb.writeInt32(this.space,s-t)):(this.vtables.push(this.offset()),this.bb.writeInt32(this.bb.capacity()-t,this.offset()-t)),this.isNested=!1,t}finish(t,e,r){const n=r?4:0;if(e){const t=e;if(this.prep(this.minalign,8+n),4!=t.length)throw new Error("FlatBuffers: file identifier must be length 4");for(let e=3;e>=0;e--)this.writeInt8(t.charCodeAt(e))}this.prep(this.minalign,4+n),this.addOffset(t),n&&this.addInt32(this.bb.capacity()-this.space),this.bb.setPosition(this.space)}finishSizePrefixed(t,e){this.finish(t,e,!0)}requiredField(t,e){const r=this.bb.capacity()-t,n=r-this.bb.readInt32(r);if(0==this.bb.readInt16(n+e))throw new Error("FlatBuffers: field "+e+" must be set")}startVector(t,e,r){this.notNested(),this.vector_num_elems=e,this.prep(4,t*e),this.prep(r,t*e)}endVector(){return this.writeInt32(this.vector_num_elems),this.offset()}createSharedString(t){if(!t)return 0;if(this.string_maps||(this.string_maps=new Map),this.string_maps.has(t))return this.string_maps.get(t);const e=this.createString(t);return this.string_maps.set(t,e),e}createString(t){if(!t)return 0;let e;if(t instanceof Uint8Array)e=t;else{e=[];let r=0;for(;r<t.length;){let n;const s=t.charCodeAt(r++);n=s<55296||s>=56320?s:(s<<10)+t.charCodeAt(r++)+-56613888,n<128?e.push(n):(n<2048?e.push(n>>6&31|192):(n<65536?e.push(n>>12&15|224):e.push(n>>18&7|240,n>>12&63|128),e.push(n>>6&63|128)),e.push(63&n|128))}}this.addInt8(0),this.startVector(1,e.length,1),this.bb.setPosition(this.space-=e.length);for(let t=0,r=this.space,n=this.bb.bytes();t<e.length;t++)n[r++]=e[t];return this.endVector()}createLong(t,e){return c.create(t,e)}createObjectOffset(t){return null===t?0:"string"==typeof t?this.createString(t):t.pack(this)}createObjectOffsetList(t){const e=[];for(let r=0;r<t.length;++r){const n=t[r];if(null===n)throw new Error("FlatBuffers: Argument for createObjectOffsetList cannot contain null.");e.push(this.createObjectOffset(n))}return e}createStructOffsetList(t,e){return e(this,t.length),this.createObjectOffsetList(t),this.endVector()}}class d{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsColumn(t,e){return(e||new d).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsColumn(t,e){return t.setPosition(t.position()+4),(e||new d).__init(t.readInt32(t.position())+t.position(),t)}name(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.__string(this.bb_pos+e,t):null}type(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.readUint8(this.bb_pos+t):r.Byte}title(t){const e=this.bb.__offset(this.bb_pos,8);return e?this.bb.__string(this.bb_pos+e,t):null}description(t){const e=this.bb.__offset(this.bb_pos,10);return e?this.bb.__string(this.bb_pos+e,t):null}width(){const t=this.bb.__offset(this.bb_pos,12);return t?this.bb.readInt32(this.bb_pos+t):-1}precision(){const t=this.bb.__offset(this.bb_pos,14);return t?this.bb.readInt32(this.bb_pos+t):-1}scale(){const t=this.bb.__offset(this.bb_pos,16);return t?this.bb.readInt32(this.bb_pos+t):-1}nullable(){const t=this.bb.__offset(this.bb_pos,18);return!t||!!this.bb.readInt8(this.bb_pos+t)}unique(){const t=this.bb.__offset(this.bb_pos,20);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}primaryKey(){const t=this.bb.__offset(this.bb_pos,22);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}metadata(t){const e=this.bb.__offset(this.bb_pos,24);return e?this.bb.__string(this.bb_pos+e,t):null}static startColumn(t){t.startObject(11)}static addName(t,e){t.addFieldOffset(0,e,0)}static addType(t,e){t.addFieldInt8(1,e,r.Byte)}static addTitle(t,e){t.addFieldOffset(2,e,0)}static addDescription(t,e){t.addFieldOffset(3,e,0)}static addWidth(t,e){t.addFieldInt32(4,e,-1)}static addPrecision(t,e){t.addFieldInt32(5,e,-1)}static addScale(t,e){t.addFieldInt32(6,e,-1)}static addNullable(t,e){t.addFieldInt8(7,+e,1)}static addUnique(t,e){t.addFieldInt8(8,+e,0)}static addPrimaryKey(t,e){t.addFieldInt8(9,+e,0)}static addMetadata(t,e){t.addFieldOffset(10,e,0)}static endColumn(t){const e=t.endObject();return t.requiredField(e,4),e}static createColumn(t,e,r,n,s,i,o,a,c,h,u,b){return d.startColumn(t),d.addName(t,e),d.addType(t,r),d.addTitle(t,n),d.addDescription(t,s),d.addWidth(t,i),d.addPrecision(t,o),d.addScale(t,a),d.addNullable(t,c),d.addUnique(t,h),d.addPrimaryKey(t,u),d.addMetadata(t,b),d.endColumn(t)}}class f{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsCrs(t,e){return(e||new f).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsCrs(t,e){return t.setPosition(t.position()+4),(e||new f).__init(t.readInt32(t.position())+t.position(),t)}org(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.__string(this.bb_pos+e,t):null}code(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.readInt32(this.bb_pos+t):0}name(t){const e=this.bb.__offset(this.bb_pos,8);return e?this.bb.__string(this.bb_pos+e,t):null}description(t){const e=this.bb.__offset(this.bb_pos,10);return e?this.bb.__string(this.bb_pos+e,t):null}wkt(t){const e=this.bb.__offset(this.bb_pos,12);return e?this.bb.__string(this.bb_pos+e,t):null}codeString(t){const e=this.bb.__offset(this.bb_pos,14);return e?this.bb.__string(this.bb_pos+e,t):null}static startCrs(t){t.startObject(6)}static addOrg(t,e){t.addFieldOffset(0,e,0)}static addCode(t,e){t.addFieldInt32(1,e,0)}static addName(t,e){t.addFieldOffset(2,e,0)}static addDescription(t,e){t.addFieldOffset(3,e,0)}static addWkt(t,e){t.addFieldOffset(4,e,0)}static addCodeString(t,e){t.addFieldOffset(5,e,0)}static endCrs(t){return t.endObject()}static createCrs(t,e,r,n,s,i,o){return f.startCrs(t),f.addOrg(t,e),f.addCode(t,r),f.addName(t,n),f.addDescription(t,s),f.addWkt(t,i),f.addCodeString(t,o),f.endCrs(t)}}!function(t){t[t.Unknown=0]="Unknown",t[t.Point=1]="Point",t[t.LineString=2]="LineString",t[t.Polygon=3]="Polygon",t[t.MultiPoint=4]="MultiPoint",t[t.MultiLineString=5]="MultiLineString",t[t.MultiPolygon=6]="MultiPolygon",t[t.GeometryCollection=7]="GeometryCollection",t[t.CircularString=8]="CircularString",t[t.CompoundCurve=9]="CompoundCurve",t[t.CurvePolygon=10]="CurvePolygon",t[t.MultiCurve=11]="MultiCurve",t[t.MultiSurface=12]="MultiSurface",t[t.Curve=13]="Curve",t[t.Surface=14]="Surface",t[t.PolyhedralSurface=15]="PolyhedralSurface",t[t.TIN=16]="TIN",t[t.Triangle=17]="Triangle"}(u||(u={}));class p{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsHeader(t,e){return(e||new p).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsHeader(t,e){return t.setPosition(t.position()+4),(e||new p).__init(t.readInt32(t.position())+t.position(),t)}name(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.__string(this.bb_pos+e,t):null}envelope(t){const e=this.bb.__offset(this.bb_pos,6);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}envelopeLength(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.__vector_len(this.bb_pos+t):0}envelopeArray(){const t=this.bb.__offset(this.bb_pos,6);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}geometryType(){const t=this.bb.__offset(this.bb_pos,8);return t?this.bb.readUint8(this.bb_pos+t):u.Unknown}hasZ(){const t=this.bb.__offset(this.bb_pos,10);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}hasM(){const t=this.bb.__offset(this.bb_pos,12);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}hasT(){const t=this.bb.__offset(this.bb_pos,14);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}hasTm(){const t=this.bb.__offset(this.bb_pos,16);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}columns(t,e){const r=this.bb.__offset(this.bb_pos,18);return r?(e||new d).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos+r)+4*t),this.bb):null}columnsLength(){const t=this.bb.__offset(this.bb_pos,18);return t?this.bb.__vector_len(this.bb_pos+t):0}featuresCount(){const t=this.bb.__offset(this.bb_pos,20);return t?this.bb.readUint64(this.bb_pos+t):this.bb.createLong(0,0)}indexNodeSize(){const t=this.bb.__offset(this.bb_pos,22);return t?this.bb.readUint16(this.bb_pos+t):16}crs(t){const e=this.bb.__offset(this.bb_pos,24);return e?(t||new f).__init(this.bb.__indirect(this.bb_pos+e),this.bb):null}title(t){const e=this.bb.__offset(this.bb_pos,26);return e?this.bb.__string(this.bb_pos+e,t):null}description(t){const e=this.bb.__offset(this.bb_pos,28);return e?this.bb.__string(this.bb_pos+e,t):null}metadata(t){const e=this.bb.__offset(this.bb_pos,30);return e?this.bb.__string(this.bb_pos+e,t):null}static startHeader(t){t.startObject(14)}static addName(t,e){t.addFieldOffset(0,e,0)}static addEnvelope(t,e){t.addFieldOffset(1,e,0)}static createEnvelopeVector(t,e){t.startVector(8,e.length,8);for(let r=e.length-1;r>=0;r--)t.addFloat64(e[r]);return t.endVector()}static startEnvelopeVector(t,e){t.startVector(8,e,8)}static addGeometryType(t,e){t.addFieldInt8(2,e,u.Unknown)}static addHasZ(t,e){t.addFieldInt8(3,+e,0)}static addHasM(t,e){t.addFieldInt8(4,+e,0)}static addHasT(t,e){t.addFieldInt8(5,+e,0)}static addHasTm(t,e){t.addFieldInt8(6,+e,0)}static addColumns(t,e){t.addFieldOffset(7,e,0)}static createColumnsVector(t,e){t.startVector(4,e.length,4);for(let r=e.length-1;r>=0;r--)t.addOffset(e[r]);return t.endVector()}static startColumnsVector(t,e){t.startVector(4,e,4)}static addFeaturesCount(t,e){t.addFieldInt64(8,e,t.createLong(0,0))}static addIndexNodeSize(t,e){t.addFieldInt16(9,e,16)}static addCrs(t,e){t.addFieldOffset(10,e,0)}static addTitle(t,e){t.addFieldOffset(11,e,0)}static addDescription(t,e){t.addFieldOffset(12,e,0)}static addMetadata(t,e){t.addFieldOffset(13,e,0)}static endHeader(t){return t.endObject()}static finishHeaderBuffer(t,e){t.finish(e)}static finishSizePrefixedHeaderBuffer(t,e){t.finish(e,void 0,!0)}}class _{constructor(t,e,r,n,s,i,o,a){this.geometryType=t,this.columns=e,this.featuresCount=r,this.indexNodeSize=n,this.crs=s,this.title=i,this.description=o,this.metadata=a}static fromByteBuffer(t){const r=p.getRootAsHeader(t),s=r.featuresCount().toFloat64(),i=r.indexNodeSize(),o=[];for(let t=0;t<r.columnsLength();t++){const n=r.columns(t);if(!n)throw new Error("Column unexpectedly missing");if(!n.name())throw new Error("Column name unexpectedly missing");o.push(new e(n.name(),n.type(),n.title(),n.description(),n.width(),n.precision(),n.scale(),n.nullable(),n.unique(),n.primaryKey()))}const a=r.crs(),c=a?new n(a.org(),a.code(),a.name(),a.description(),a.wkt(),a.codeString()):null;return new _(r.geometryType(),o,s,i,c,r.title(),r.description(),r.metadata())}}class y{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsGeometry(t,e){return(e||new y).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsGeometry(t,e){return t.setPosition(t.position()+4),(e||new y).__init(t.readInt32(t.position())+t.position(),t)}ends(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.readUint32(this.bb.__vector(this.bb_pos+e)+4*t):0}endsLength(){const t=this.bb.__offset(this.bb_pos,4);return t?this.bb.__vector_len(this.bb_pos+t):0}endsArray(){const t=this.bb.__offset(this.bb_pos,4);return t?new Uint32Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}xy(t){const e=this.bb.__offset(this.bb_pos,6);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}xyLength(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.__vector_len(this.bb_pos+t):0}xyArray(){const t=this.bb.__offset(this.bb_pos,6);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}z(t){const e=this.bb.__offset(this.bb_pos,8);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}zLength(){const t=this.bb.__offset(this.bb_pos,8);return t?this.bb.__vector_len(this.bb_pos+t):0}zArray(){const t=this.bb.__offset(this.bb_pos,8);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}m(t){const e=this.bb.__offset(this.bb_pos,10);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}mLength(){const t=this.bb.__offset(this.bb_pos,10);return t?this.bb.__vector_len(this.bb_pos+t):0}mArray(){const t=this.bb.__offset(this.bb_pos,10);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}t(t){const e=this.bb.__offset(this.bb_pos,12);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}tLength(){const t=this.bb.__offset(this.bb_pos,12);return t?this.bb.__vector_len(this.bb_pos+t):0}tArray(){const t=this.bb.__offset(this.bb_pos,12);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}tm(t){const e=this.bb.__offset(this.bb_pos,14);return e?this.bb.readUint64(this.bb.__vector(this.bb_pos+e)+8*t):this.bb.createLong(0,0)}tmLength(){const t=this.bb.__offset(this.bb_pos,14);return t?this.bb.__vector_len(this.bb_pos+t):0}type(){const t=this.bb.__offset(this.bb_pos,16);return t?this.bb.readUint8(this.bb_pos+t):u.Unknown}parts(t,e){const r=this.bb.__offset(this.bb_pos,18);return r?(e||new y).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos+r)+4*t),this.bb):null}partsLength(){const t=this.bb.__offset(this.bb_pos,18);return t?this.bb.__vector_len(this.bb_pos+t):0}static startGeometry(t){t.startObject(8)}static addEnds(t,e){t.addFieldOffset(0,e,0)}static createEndsVector(t,e){t.startVector(4,e.length,4);for(let r=e.length-1;r>=0;r--)t.addInt32(e[r]);return t.endVector()}static startEndsVector(t,e){t.startVector(4,e,4)}static addXy(t,e){t.addFieldOffset(1,e,0)}static createXyVector(t,e){t.startVector(8,e.length,8);for(let r=e.length-1;r>=0;r--)t.addFloat64(e[r]);return t.endVector()}static startXyVector(t,e){t.startVector(8,e,8)}static addZ(t,e){t.addFieldOffset(2,e,0)}static createZVector(t,e){t.startVector(8,e.length,8);for(let r=e.length-1;r>=0;r--)t.addFloat64(e[r]);return t.endVector()}static startZVector(t,e){t.startVector(8,e,8)}static addM(t,e){t.addFieldOffset(3,e,0)}static createMVector(t,e){t.startVector(8,e.length,8);for(let r=e.length-1;r>=0;r--)t.addFloat64(e[r]);return t.endVector()}static startMVector(t,e){t.startVector(8,e,8)}static addT(t,e){t.addFieldOffset(4,e,0)}static createTVector(t,e){t.startVector(8,e.length,8);for(let r=e.length-1;r>=0;r--)t.addFloat64(e[r]);return t.endVector()}static startTVector(t,e){t.startVector(8,e,8)}static addTm(t,e){t.addFieldOffset(5,e,0)}static createTmVector(t,e){t.startVector(8,e.length,8);for(let r=e.length-1;r>=0;r--)t.addInt64(e[r]);return t.endVector()}static startTmVector(t,e){t.startVector(8,e,8)}static addType(t,e){t.addFieldInt8(6,e,u.Unknown)}static addParts(t,e){t.addFieldOffset(7,e,0)}static createPartsVector(t,e){t.startVector(4,e.length,4);for(let r=e.length-1;r>=0;r--)t.addOffset(e[r]);return t.endVector()}static startPartsVector(t,e){t.startVector(4,e,4)}static endGeometry(t){return t.endObject()}static createGeometry(t,e,r,n,s,i,o,a,c){return y.startGeometry(t),y.addEnds(t,e),y.addXy(t,r),y.addZ(t,n),y.addM(t,s),y.addT(t,i),y.addTm(t,o),y.addType(t,a),y.addParts(t,c),y.endGeometry(t)}}function g(t,e,r){if(0!==t.length)if(Array.isArray(t[0]))for(const n of t)g(n,e,r);else 2===t.length?e.push(...t):(e.push(t[0],t[1]),r.push(t[2]))}function w(t,e){const r=[];for(let n=0;n<t.length;n+=2){const s=[t[n],t[n+1]];e&&s.push(e[n>>1]),r.push(s)}return r}function m(t){return t?u[t]:u.Unknown}function v(t){const e=t.coordinates,r=[],n=[];let s,i;const o=m(t.type);let a=0;switch(t.type){case"Point":g(e,r,n);break;case"MultiPoint":case"LineString":g(e,r,n);break;case"MultiLineString":case"Polygon":{const t=e;g(t,r,n),t.length>1&&(s=t.map(t=>a+=t.length));break}case"MultiPolygon":i=e.map(t=>({type:"Polygon",coordinates:t})).map(v);break;case"GeometryCollection":t.geometries&&(i=t.geometries.map(v))}return{xy:r,z:n.length>0?n:void 0,ends:s,type:o,parts:i}}function I(t,e){if(e===u.GeometryCollection){const r=[];for(let e=0;e<t.partsLength();e++){const n=t.parts(e),s=n.type();r.push(I(n,s))}return{type:u[e],geometries:r}}if(e===u.MultiPolygon){const r=[];for(let e=0;e<t.partsLength();e++)r.push(I(t.parts(e),u.Polygon));return{type:u[e],coordinates:r.map(t=>t.coordinates)}}const r=function(t,e){const r=t.xyArray(),n=t.zArray();switch(e){case u.Point:{const t=Array.from(r);return n&&t.push(n[0]),t}case u.MultiPoint:case u.LineString:return w(r,n);case u.MultiLineString:case u.Polygon:return function(t,e,r){if(!r||0===r.length)return[w(t,e)];let n=0;const s=Array.from(r).map(e=>t.slice(n,n=e<<1));let i;return e&&(n=0,i=Array.from(r).map(t=>e.slice(n,n=t))),s.map((t,e)=>w(t,i?i[e]:void 0))}(r,n,t.endsArray())}}(t,e);return{type:u[e],coordinates:r}}class F{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsFeature(t,e){return(e||new F).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsFeature(t,e){return t.setPosition(t.position()+4),(e||new F).__init(t.readInt32(t.position())+t.position(),t)}geometry(t){const e=this.bb.__offset(this.bb_pos,4);return e?(t||new y).__init(this.bb.__indirect(this.bb_pos+e),this.bb):null}properties(t){const e=this.bb.__offset(this.bb_pos,6);return e?this.bb.readUint8(this.bb.__vector(this.bb_pos+e)+t):0}propertiesLength(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.__vector_len(this.bb_pos+t):0}propertiesArray(){const t=this.bb.__offset(this.bb_pos,6);return t?new Uint8Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}columns(t,e){const r=this.bb.__offset(this.bb_pos,8);return r?(e||new d).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos+r)+4*t),this.bb):null}columnsLength(){const t=this.bb.__offset(this.bb_pos,8);return t?this.bb.__vector_len(this.bb_pos+t):0}static startFeature(t){t.startObject(3)}static addGeometry(t,e){t.addFieldOffset(0,e,0)}static addProperties(t,e){t.addFieldOffset(1,e,0)}static createPropertiesVector(t,e){t.startVector(1,e.length,1);for(let r=e.length-1;r>=0;r--)t.addInt8(e[r]);return t.endVector()}static startPropertiesVector(t,e){t.startVector(1,e,1)}static addColumns(t,e){t.addFieldOffset(2,e,0)}static createColumnsVector(t,e){t.startVector(4,e.length,4);for(let r=e.length-1;r>=0;r--)t.addOffset(e[r]);return t.endVector()}static startColumnsVector(t,e){t.startVector(4,e,4)}static endFeature(t){return t.endObject()}static finishFeatureBuffer(t,e){t.finish(e)}static finishSizePrefixedFeatureBuffer(t,e){t.finish(e,void 0,!0)}static createFeature(t,e,r,n){return F.startFeature(t),F.addGeometry(t,e),F.addProperties(t,r),F.addColumns(t,n),F.endFeature(t)}}const O=new TextEncoder,x=new TextDecoder;function S(t,e,n){const s=n.columns,i=new l;let o=0,a=1024,c=new Uint8Array(a),h=new DataView(c.buffer);const u=function(t){if(o+t<a)return;a*=2;const e=new Uint8Array(a);e.set(c),c=e,h=new DataView(c.buffer,o)};if(s)for(let t=0;t<s.length;t++){const n=s[t],i=e[n.name];if(null!==i)switch(h.setUint16(o,t,!0),o+=2,n.type){case r.Bool:u(1),h.setUint8(o,i),o+=1;break;case r.Short:u(2),h.setInt16(o,i,!0),o+=2;break;case r.UShort:u(2),h.setUint16(o,i,!0),o+=2;break;case r.Int:u(4),h.setInt32(o,i,!0),o+=4;break;case r.UInt:u(4),h.setUint32(o,i,!0),o+=4;break;case r.Long:u(8),h.setBigInt64(o,BigInt(i),!0),o+=8;break;case r.Double:u(8),h.setFloat64(o,i,!0),o+=8;break;case r.DateTime:case r.String:{const t=O.encode(i);u(4),h.setUint32(o,t.length,!0),o+=4,u(t.length),c.set(t,o),o+=t.length;break}default:throw new Error("Unknown type "+n.type)}}let b=null;o>0&&(b=F.createPropertiesVector(i,c.slice(0,o)));const d=function t(e,r){const{xy:n,z:s,ends:i,parts:o,type:a}=r;if(o){const r=o.map(r=>t(e,r)),n=y.createPartsVector(e,r);return y.startGeometry(e),y.addParts(e,n),y.endGeometry(e)}const c=y.createXyVector(e,n);let h,u;return s&&(h=y.createZVector(e,s)),i&&(u=y.createEndsVector(e,i)),y.startGeometry(e),u&&y.addEnds(e,u),y.addXy(e,c),h&&y.addZ(e,h),y.addType(e,a),y.endGeometry(e)}(i,t);F.startFeature(i),F.addGeometry(i,d),b&&F.addProperties(i,b);const f=F.endFeature(i);return i.finishSizePrefixed(f),i.asUint8Array()}function U(t,e){const n=e.columns,s={type:"Feature",geometry:I(t.geometry(),e.geometryType)};return n&&n.length>0&&(s.properties=function(t,e){const n={};if(!e||0===e.length)return n;const s=t.propertiesArray();if(!s)return n;const i=new DataView(s.buffer,s.byteOffset),o=t.propertiesLength();let a=0;for(;a<o;){const t=i.getUint16(a,!0);a+=2;const o=e[t],c=o.name;switch(o.type){case 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startColumn(t){t.startObject(11)}static addName(t,e){t.addFieldOffset(0,e,0)}static addType(t,e){t.addFieldInt8(1,e,r.Byte)}static addTitle(t,e){t.addFieldOffset(2,e,0)}static addDescription(t,e){t.addFieldOffset(3,e,0)}static addWidth(t,e){t.addFieldInt32(4,e,-1)}static addPrecision(t,e){t.addFieldInt32(5,e,-1)}static addScale(t,e){t.addFieldInt32(6,e,-1)}static addNullable(t,e){t.addFieldInt8(7,+e,1)}static addUnique(t,e){t.addFieldInt8(8,+e,0)}static addPrimaryKey(t,e){t.addFieldInt8(9,+e,0)}static addMetadata(t,e){t.addFieldOffset(10,e,0)}static endColumn(t){const e=t.endObject();return t.requiredField(e,4),e}static createColumn(t,e,r,n,s,i,o,a,c,h,u,b){return d.startColumn(t),d.addName(t,e),d.addType(t,r),d.addTitle(t,n),d.addDescription(t,s),d.addWidth(t,i),d.addPrecision(t,o),d.addScale(t,a),d.addNullable(t,c),d.addUnique(t,h),d.addPrimaryKey(t,u),d.addMetadata(t,b),d.endColumn(t)}}class f{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsCrs(t,e){return(e||new f).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsCrs(t,e){return t.setPosition(t.position()+4),(e||new f).__init(t.readInt32(t.position())+t.position(),t)}org(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.__string(this.bb_pos+e,t):null}code(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.readInt32(this.bb_pos+t):0}name(t){const e=this.bb.__offset(this.bb_pos,8);return e?this.bb.__string(this.bb_pos+e,t):null}description(t){const e=this.bb.__offset(this.bb_pos,10);return e?this.bb.__string(this.bb_pos+e,t):null}wkt(t){const e=this.bb.__offset(this.bb_pos,12);return e?this.bb.__string(this.bb_pos+e,t):null}codeString(t){const e=this.bb.__offset(this.bb_pos,14);return e?this.bb.__string(this.bb_pos+e,t):null}static startCrs(t){t.startObject(6)}static addOrg(t,e){t.addFieldOffset(0,e,0)}static addCode(t,e){t.addFieldInt32(1,e,0)}static addName(t,e){t.addFieldOffset(2,e,0)}static addDescription(t,e){t.addFieldOffset(3,e,0)}static addWkt(t,e){t.addFieldOffset(4,e,0)}static addCodeString(t,e){t.addFieldOffset(5,e,0)}static endCrs(t){return t.endObject()}static createCrs(t,e,r,n,s,i,o){return f.startCrs(t),f.addOrg(t,e),f.addCode(t,r),f.addName(t,n),f.addDescription(t,s),f.addWkt(t,i),f.addCodeString(t,o),f.endCrs(t)}}!function(t){t[t.Unknown=0]="Unknown",t[t.Point=1]="Point",t[t.LineString=2]="LineString",t[t.Polygon=3]="Polygon",t[t.MultiPoint=4]="MultiPoint",t[t.MultiLineString=5]="MultiLineString",t[t.MultiPolygon=6]="MultiPolygon",t[t.GeometryCollection=7]="GeometryCollection",t[t.CircularString=8]="CircularString",t[t.CompoundCurve=9]="CompoundCurve",t[t.CurvePolygon=10]="CurvePolygon",t[t.MultiCurve=11]="MultiCurve",t[t.MultiSurface=12]="MultiSurface",t[t.Curve=13]="Curve",t[t.Surface=14]="Surface",t[t.PolyhedralSurface=15]="PolyhedralSurface",t[t.TIN=16]="TIN",t[t.Triangle=17]="Triangle"}(u||(u={}));class p{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsHeader(t,e){return(e||new p).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsHeader(t,e){return t.setPosition(t.position()+4),(e||new p).__init(t.readInt32(t.position())+t.position(),t)}name(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.__string(this.bb_pos+e,t):null}envelope(t){const e=this.bb.__offset(this.bb_pos,6);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}envelopeLength(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.__vector_len(this.bb_pos+t):0}envelopeArray(){const t=this.bb.__offset(this.bb_pos,6);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}geometryType(){const t=this.bb.__offset(this.bb_pos,8);return t?this.bb.readUint8(this.bb_pos+t):u.Unknown}hasZ(){const t=this.bb.__offset(this.bb_pos,10);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}hasM(){const t=this.bb.__offset(this.bb_pos,12);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}hasT(){const t=this.bb.__offset(this.bb_pos,14);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}hasTm(){const t=this.bb.__offset(this.bb_pos,16);return!!t&&!!this.bb.readInt8(this.bb_pos+t)}columns(t,e){const r=this.bb.__offset(this.bb_pos,18);return r?(e||new d).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos+r)+4*t),this.bb):null}columnsLength(){const t=this.bb.__offset(this.bb_pos,18);return t?this.bb.__vector_len(this.bb_pos+t):0}featuresCount(){const t=this.bb.__offset(this.bb_pos,20);return t?this.bb.readUint64(this.bb_pos+t):this.bb.createLong(0,0)}indexNodeSize(){const t=this.bb.__offset(this.bb_pos,22);return t?this.bb.readUint16(this.bb_pos+t):16}crs(t){const e=this.bb.__offset(this.bb_pos,24);return e?(t||new f).__init(this.bb.__indirect(this.bb_pos+e),this.bb):null}title(t){const e=this.bb.__offset(this.bb_pos,26);return e?this.bb.__string(this.bb_pos+e,t):null}description(t){const e=this.bb.__offset(this.bb_pos,28);return e?this.bb.__string(this.bb_pos+e,t):null}metadata(t){const e=this.bb.__offset(this.bb_pos,30);return e?this.bb.__string(this.bb_pos+e,t):null}static startHeader(t){t.startObject(14)}static addName(t,e){t.addFieldOffset(0,e,0)}static addEnvelope(t,e){t.addFieldOffset(1,e,0)}static createEnvelopeVector(t,e){t.startVector(8,e.length,8);for(let r=e.length-1;r>=0;r--)t.addFloat64(e[r]);return t.endVector()}static startEnvelopeVector(t,e){t.startVector(8,e,8)}static addGeometryType(t,e){t.addFieldInt8(2,e,u.Unknown)}static addHasZ(t,e){t.addFieldInt8(3,+e,0)}static addHasM(t,e){t.addFieldInt8(4,+e,0)}static addHasT(t,e){t.addFieldInt8(5,+e,0)}static addHasTm(t,e){t.addFieldInt8(6,+e,0)}static addColumns(t,e){t.addFieldOffset(7,e,0)}static createColumnsVector(t,e){t.startVector(4,e.length,4);for(let r=e.length-1;r>=0;r--)t.addOffset(e[r]);return t.endVector()}static startColumnsVector(t,e){t.startVector(4,e,4)}static addFeaturesCount(t,e){t.addFieldInt64(8,e,t.createLong(0,0))}static addIndexNodeSize(t,e){t.addFieldInt16(9,e,16)}static addCrs(t,e){t.addFieldOffset(10,e,0)}static addTitle(t,e){t.addFieldOffset(11,e,0)}static addDescription(t,e){t.addFieldOffset(12,e,0)}static addMetadata(t,e){t.addFieldOffset(13,e,0)}static endHeader(t){return t.endObject()}static finishHeaderBuffer(t,e){t.finish(e)}static finishSizePrefixedHeaderBuffer(t,e){t.finish(e,void 0,!0)}}class _{constructor(t,e,r,n,s,i,o,a){this.geometryType=t,this.columns=e,this.featuresCount=r,this.indexNodeSize=n,this.crs=s,this.title=i,this.description=o,this.metadata=a}static fromByteBuffer(t){const r=p.getRootAsHeader(t),s=r.featuresCount().toFloat64(),i=r.indexNodeSize(),o=[];for(let t=0;t<r.columnsLength();t++){const n=r.columns(t);if(!n)throw new Error("Column unexpectedly missing");if(!n.name())throw new Error("Column name unexpectedly missing");o.push(new e(n.name(),n.type(),n.title(),n.description(),n.width(),n.precision(),n.scale(),n.nullable(),n.unique(),n.primaryKey()))}const a=r.crs(),c=a?new n(a.org(),a.code(),a.name(),a.description(),a.wkt(),a.codeString()):null;return new _(r.geometryType(),o,s,i,c,r.title(),r.description(),r.metadata())}}class y{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsGeometry(t,e){return(e||new y).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsGeometry(t,e){return t.setPosition(t.position()+4),(e||new y).__init(t.readInt32(t.position())+t.position(),t)}ends(t){const e=this.bb.__offset(this.bb_pos,4);return e?this.bb.readUint32(this.bb.__vector(this.bb_pos+e)+4*t):0}endsLength(){const t=this.bb.__offset(this.bb_pos,4);return t?this.bb.__vector_len(this.bb_pos+t):0}endsArray(){const t=this.bb.__offset(this.bb_pos,4);return t?new Uint32Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}xy(t){const e=this.bb.__offset(this.bb_pos,6);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}xyLength(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.__vector_len(this.bb_pos+t):0}xyArray(){const t=this.bb.__offset(this.bb_pos,6);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}z(t){const e=this.bb.__offset(this.bb_pos,8);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}zLength(){const t=this.bb.__offset(this.bb_pos,8);return t?this.bb.__vector_len(this.bb_pos+t):0}zArray(){const t=this.bb.__offset(this.bb_pos,8);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}m(t){const e=this.bb.__offset(this.bb_pos,10);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}mLength(){const t=this.bb.__offset(this.bb_pos,10);return t?this.bb.__vector_len(this.bb_pos+t):0}mArray(){const t=this.bb.__offset(this.bb_pos,10);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}t(t){const e=this.bb.__offset(this.bb_pos,12);return e?this.bb.readFloat64(this.bb.__vector(this.bb_pos+e)+8*t):0}tLength(){const t=this.bb.__offset(this.bb_pos,12);return t?this.bb.__vector_len(this.bb_pos+t):0}tArray(){const t=this.bb.__offset(this.bb_pos,12);return t?new Float64Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}tm(t){const e=this.bb.__offset(this.bb_pos,14);return e?this.bb.readUint64(this.bb.__vector(this.bb_pos+e)+8*t):this.bb.createLong(0,0)}tmLength(){const t=this.bb.__offset(this.bb_pos,14);return t?this.bb.__vector_len(this.bb_pos+t):0}type(){const t=this.bb.__offset(this.bb_pos,16);return t?this.bb.readUint8(this.bb_pos+t):u.Unknown}parts(t,e){const r=this.bb.__offset(this.bb_pos,18);return r?(e||new y).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos+r)+4*t),this.bb):null}partsLength(){const t=this.bb.__offset(this.bb_pos,18);return t?this.bb.__vector_len(this.bb_pos+t):0}static startGeometry(t){t.startObject(8)}static addEnds(t,e){t.addFieldOffset(0,e,0)}static createEndsVector(t,e){t.startVector(4,e.length,4);for(let r=e.length-1;r>=0;r--)t.addInt32(e[r]);return t.endVector()}static startEndsVector(t,e){t.startVector(4,e,4)}static addXy(t,e){t.addFieldOffset(1,e,0)}static createXyVector(t,e){t.startVector(8,e.length,8);for(let r=e.length-1;r>=0;r--)t.addFloat64(e[r]);return t.endVector()}static startXyVector(t,e){t.startVector(8,e,8)}static addZ(t,e){t.addFieldOffset(2,e,0)}static createZVector(t,e){t.startVector(8,e.length,8);for(let r=e.length-1;r>=0;r--)t.addFloat64(e[r]);return t.endVector()}static startZVector(t,e){t.startVector(8,e,8)}static addM(t,e){t.addFieldOffset(3,e,0)}static createMVector(t,e){t.startVector(8,e.length,8);for(let r=e.length-1;r>=0;r--)t.addFloat64(e[r]);return t.endVector()}static startMVector(t,e){t.startVector(8,e,8)}static addT(t,e){t.addFieldOffset(4,e,0)}static createTVector(t,e){t.startVector(8,e.length,8);for(let r=e.length-1;r>=0;r--)t.addFloat64(e[r]);return t.endVector()}static startTVector(t,e){t.startVector(8,e,8)}static addTm(t,e){t.addFieldOffset(5,e,0)}static createTmVector(t,e){t.startVector(8,e.length,8);for(let r=e.length-1;r>=0;r--)t.addInt64(e[r]);return t.endVector()}static startTmVector(t,e){t.startVector(8,e,8)}static addType(t,e){t.addFieldInt8(6,e,u.Unknown)}static addParts(t,e){t.addFieldOffset(7,e,0)}static createPartsVector(t,e){t.startVector(4,e.length,4);for(let r=e.length-1;r>=0;r--)t.addOffset(e[r]);return t.endVector()}static startPartsVector(t,e){t.startVector(4,e,4)}static endGeometry(t){return t.endObject()}static createGeometry(t,e,r,n,s,i,o,a,c){return y.startGeometry(t),y.addEnds(t,e),y.addXy(t,r),y.addZ(t,n),y.addM(t,s),y.addT(t,i),y.addTm(t,o),y.addType(t,a),y.addParts(t,c),y.endGeometry(t)}}function g(t,e,r){if(0!==t.length)if(Array.isArray(t[0]))for(const n of t)g(n,e,r);else 2===t.length?e.push(...t):(e.push(t[0],t[1]),r.push(t[2]))}function w(t,e){const r=[];for(let n=0;n<t.length;n+=2){const s=[t[n],t[n+1]];e&&s.push(e[n>>1]),r.push(s)}return r}function m(t){return t?u[t]:u.Unknown}function v(t){const e=t.coordinates,r=[],n=[];let s,i;const o=m(t.type);let a=0;switch(t.type){case"Point":g(e,r,n);break;case"MultiPoint":case"LineString":g(e,r,n);break;case"MultiLineString":case"Polygon":{const t=e;g(t,r,n),t.length>1&&(s=t.map(t=>a+=t.length));break}case"MultiPolygon":i=e.map(t=>({type:"Polygon",coordinates:t})).map(v);break;case"GeometryCollection":t.geometries&&(i=t.geometries.map(v))}return{xy:r,z:n.length>0?n:void 0,ends:s,type:o,parts:i}}function I(t,e){if(e===u.GeometryCollection){const r=[];for(let e=0;e<t.partsLength();e++){const n=t.parts(e),s=n.type();r.push(I(n,s))}return{type:u[e],geometries:r}}if(e===u.MultiPolygon){const r=[];for(let e=0;e<t.partsLength();e++)r.push(I(t.parts(e),u.Polygon));return{type:u[e],coordinates:r.map(t=>t.coordinates)}}const r=function(t,e){const r=t.xyArray(),n=t.zArray();switch(e){case u.Point:{const t=Array.from(r);return n&&t.push(n[0]),t}case u.MultiPoint:case u.LineString:return w(r,n);case u.MultiLineString:case u.Polygon:return function(t,e,r){if(!r||0===r.length)return[w(t,e)];let n=0;const s=Array.from(r).map(e=>t.slice(n,n=e<<1));let i;return e&&(n=0,i=Array.from(r).map(t=>e.slice(n,n=t))),s.map((t,e)=>w(t,i?i[e]:void 0))}(r,n,t.endsArray())}}(t,e);return{type:u[e],coordinates:r}}class F{constructor(){this.bb=null,this.bb_pos=0}__init(t,e){return this.bb_pos=t,this.bb=e,this}static getRootAsFeature(t,e){return(e||new F).__init(t.readInt32(t.position())+t.position(),t)}static getSizePrefixedRootAsFeature(t,e){return t.setPosition(t.position()+4),(e||new F).__init(t.readInt32(t.position())+t.position(),t)}geometry(t){const e=this.bb.__offset(this.bb_pos,4);return e?(t||new y).__init(this.bb.__indirect(this.bb_pos+e),this.bb):null}properties(t){const e=this.bb.__offset(this.bb_pos,6);return e?this.bb.readUint8(this.bb.__vector(this.bb_pos+e)+t):0}propertiesLength(){const t=this.bb.__offset(this.bb_pos,6);return t?this.bb.__vector_len(this.bb_pos+t):0}propertiesArray(){const t=this.bb.__offset(this.bb_pos,6);return t?new Uint8Array(this.bb.bytes().buffer,this.bb.bytes().byteOffset+this.bb.__vector(this.bb_pos+t),this.bb.__vector_len(this.bb_pos+t)):null}columns(t,e){const r=this.bb.__offset(this.bb_pos,8);return r?(e||new d).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos+r)+4*t),this.bb):null}columnsLength(){const t=this.bb.__offset(this.bb_pos,8);return t?this.bb.__vector_len(this.bb_pos+t):0}static startFeature(t){t.startObject(3)}static addGeometry(t,e){t.addFieldOffset(0,e,0)}static addProperties(t,e){t.addFieldOffset(1,e,0)}static createPropertiesVector(t,e){t.startVector(1,e.length,1);for(let r=e.length-1;r>=0;r--)t.addInt8(e[r]);return t.endVector()}static startPropertiesVector(t,e){t.startVector(1,e,1)}static addColumns(t,e){t.addFieldOffset(2,e,0)}static createColumnsVector(t,e){t.startVector(4,e.length,4);for(let r=e.length-1;r>=0;r--)t.addOffset(e[r]);return t.endVector()}static startColumnsVector(t,e){t.startVector(4,e,4)}static endFeature(t){return t.endObject()}static finishFeatureBuffer(t,e){t.finish(e)}static finishSizePrefixedFeatureBuffer(t,e){t.finish(e,void 0,!0)}static createFeature(t,e,r,n){return F.startFeature(t),F.addGeometry(t,e),F.addProperties(t,r),F.addColumns(t,n),F.endFeature(t)}}const O=new TextEncoder,x=new TextDecoder;function S(t,e,n){const s=n.columns,i=new l;let o=0,a=1024,c=new Uint8Array(a),h=new DataView(c.buffer);const u=function(t){if(o+t<a)return;a*=2;const e=new Uint8Array(a);e.set(c),c=e,h=new DataView(c.buffer,o)};if(s)for(let t=0;t<s.length;t++){const n=s[t],i=e[n.name];if(null!==i)switch(h.setUint16(o,t,!0),o+=2,n.type){case r.Bool:u(1),h.setUint8(o,i),o+=1;break;case r.Short:u(2),h.setInt16(o,i,!0),o+=2;break;case r.UShort:u(2),h.setUint16(o,i,!0),o+=2;break;case r.Int:u(4),h.setInt32(o,i,!0),o+=4;break;case r.UInt:u(4),h.setUint32(o,i,!0),o+=4;break;case r.Long:u(8),h.setBigInt64(o,BigInt(i),!0),o+=8;break;case r.Double:u(8),h.setFloat64(o,i,!0),o+=8;break;case r.DateTime:case r.String:{const t=O.encode(i);u(4),h.setUint32(o,t.length,!0),o+=4,u(t.length),c.set(t,o),o+=t.length;break}default:throw new Error("Unknown type "+n.type)}}let 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package.json

 {
   "name": "@loaders.gl/flatgeobuf",
   "description": "Loader for FlatGeobuf",
-  "version": "3.0.0-beta.7",
+  "version": "3.0.0-beta.8",
   "license": "MIT",
@@ -35,3 +35,3 @@ "publishConfig": {
   "dependencies": {
-    "@loaders.gl/loader-utils": "3.0.0-beta.7",
+    "@loaders.gl/loader-utils": "3.0.0-beta.8",
     "flatgeobuf": "^3.1.0"
@@ -42,3 +42,3 @@ },
   },
-  "gitHead": "7760178558818f1b32f3c56d888c2378e2f6daca"
+  "gitHead": "b5b361c4a7fbf21dabaa4522d07e5917f1f4213a"
 }

No alert changes

Worsened metrics

Total package byte prevSize

503264

decreased by-0.01%

Dependency changes

• + [e-mail]/loader-utils@3.0.0-beta.8(transitive)

• + [e-mail]/worker-utils@3.0.0-beta.8(transitive)

• - [e-mail]/loader-utils@3.0.0-beta.7(transitive)

• - [e-mail]/worker-utils@3.0.0-beta.7(transitive)

• [e-mail]/loader-utils@3.0.0-beta.8