diff --git a/dist/source-map.js b/dist/source-map.js
index 16b740ce..133c53e4 100644
--- a/dist/source-map.js
+++ b/dist/source-map.js
@@ -1 +1 @@
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n={code:"",line:1,column:0},t=new r(e);let o=!1,i=null,l=null,a=null,u=null;return this.walk(function(e,r){n.code+=e,null!==r.source&&null!==r.line&&null!==r.column?(i===r.source&&l===r.line&&a===r.column&&u===r.name||t.addMapping({source:r.source,original:{line:r.line,column:r.column},generated:{line:n.line,column:n.column},name:r.name}),i=r.source,l=r.line,a=r.column,u=r.name,o=!0):o&&(t.addMapping({generated:{line:n.line,column:n.column}}),i=null,o=!1);for(let l=0,a=e.length;l<a;l++)e.charCodeAt(l)===s?(n.line++,n.column=0,l+1===a?(i=null,o=!1):o&&t.addMapping({source:r.source,original:{line:r.line,column:r.column},generated:{line:n.line,column:n.column},name:r.name})):n.column++}),this.walkSourceContents(function(e,n){t.setSourceContent(e,n)}),{code:n.code,map:t}}}n.SourceNode=a},function(e,n,t){const r=t(1);let o=null;e.exports=function(){if(o)return o;const e=[];return o=r().then(n=>WebAssembly.instantiate(n,{env:{mapping_callback(n,t,r,o,i,s,l,a,u,c){const g=new function(){this.generatedLine=0,this.generatedColumn=0,this.lastGeneratedColumn=null,this.source=null,this.originalLine=null,this.originalColumn=null,this.name=null};g.generatedLine=n+1,g.generatedColumn=t,r&&(g.lastGeneratedColumn=o-1),i&&(g.source=s,g.originalLine=l+1,g.originalColumn=a,u&&(g.name=c)),e[e.length-1](g)},start_all_generated_locations_for(){console.time("all_generated_locations_for")},end_all_generated_locations_for(){console.timeEnd("all_generated_locations_for")},start_compute_column_spans(){console.time("compute_column_spans")},end_compute_column_spans(){console.timeEnd("compute_column_spans")},start_generated_location_for(){console.time("generated_location_for")},end_generated_location_for(){console.timeEnd("generated_location_for")},start_original_location_for(){console.time("original_location_for")},end_original_location_for(){console.timeEnd("original_location_for")},start_parse_mappings(){console.time("parse_mappings")},end_parse_mappings(){console.timeEnd("parse_mappings")},start_sort_by_generated_location(){console.time("sort_by_generated_location")},end_sort_by_generated_location(){console.timeEnd("sort_by_generated_location")},start_sort_by_original_location(){console.time("sort_by_original_location")},end_sort_by_original_location(){console.timeEnd("sort_by_original_location")}}})).then(n=>({exports:n.instance.exports,withMappingCallback:(n,t)=>{e.push(n);try{t()}finally{e.pop()}}})).then(null,e=>{throw o=null,e})}},function(n,t){n.exports=e},function(e,t){e.exports=n},function(e,n){n.GREATEST_LOWER_BOUND=1,n.LEAST_UPPER_BOUND=2,n.search=function(e,t,r,o){if(0===t.length)return-1;let i=function e(t,r,o,i,s,l){const a=Math.floor((r-t)/2)+t,u=s(o,i[a],!0);return 0===u?a:u>0?r-a>1?e(a,r,o,i,s,l):l==n.LEAST_UPPER_BOUND?r<i.length?r:-1:a:a-t>1?e(t,a,o,i,s,l):l==n.LEAST_UPPER_BOUND?a:t<0?-1:t}(-1,t.length,e,t,r,o||n.GREATEST_LOWER_BOUND);if(i<0)return-1;for(;i-1>=0&&0===r(t[i],t[i-1],!0);)--i;return i}},function(e,n,t){const r=t(0),o=t(9),i=t(2).ArraySet,s=(t(3),t(1)),l=t(6),a=Symbol("smcInternal");class u{constructor(e,n){return e==a?Promise.resolve(this):function(e,n){let t=e;"string"==typeof e&&(t=r.parseSourceMapInput(e));const o=null!=t.sections?new g(t,n):new c(t,n);return Promise.resolve(o)}(e,n)}static initialize(e){s.initialize(e["lib/mappings.wasm"])}static fromSourceMap(e,n){return function(e,n){return c.fromSourceMap(e,n)}(e,n)}static async with(e,n,t){const r=await new u(e,n);try{return await t(r)}finally{r.destroy()}}_parseMappings(e,n){throw new Error("Subclasses must implement _parseMappings")}eachMapping(e,n,t){throw new Error("Subclasses must implement eachMapping")}allGeneratedPositionsFor(e){throw new Error("Subclasses must implement allGeneratedPositionsFor")}destroy(){throw new Error("Subclasses must implement destroy")}}u.prototype._version=3,u.GENERATED_ORDER=1,u.ORIGINAL_ORDER=2,u.GREATEST_LOWER_BOUND=1,u.LEAST_UPPER_BOUND=2,n.SourceMapConsumer=u;class c extends u{constructor(e,n){return super(a).then(t=>{let o=e;"string"==typeof e&&(o=r.parseSourceMapInput(e));const s=r.getArg(o,"version");let a=r.getArg(o,"sources");const u=r.getArg(o,"names",[]);let c=r.getArg(o,"sourceRoot",null);const g=r.getArg(o,"sourcesContent",null),p=r.getArg(o,"mappings"),h=r.getArg(o,"file",null);if(s!=t._version)throw new Error("Unsupported version: "+s);return c&&(c=r.normalize(c)),a=a.map(String).map(r.normalize).map(function(e){return c&&r.isAbsolute(c)&&r.isAbsolute(e)?r.relative(c,e):e}),t._names=i.fromArray(u.map(String),!0),t._sources=i.fromArray(a,!0),t._absoluteSources=t._sources.toArray().map(function(e){return r.computeSourceURL(c,e,n)}),t.sourceRoot=c,t.sourcesContent=g,t._mappings=p,t._sourceMapURL=n,t.file=h,t._computedColumnSpans=!1,t._mappingsPtr=0,t._wasm=null,l().then(e=>(t._wasm=e,t))})}_findSourceIndex(e){let n=e;if(null!=this.sourceRoot&&(n=r.relative(this.sourceRoot,n)),this._sources.has(n))return this._sources.indexOf(n);for(let n=0;n<this._absoluteSources.length;++n)if(this._absoluteSources[n]==e)return n;return-1}static fromSourceMap(e,n){return new c(e.toString())}get sources(){return this._absoluteSources.slice()}_getMappingsPtr(){return 0===this._mappingsPtr&&this._parseMappings(this._mappings,this.sourceRoot),this._mappingsPtr}_parseMappings(e,n){const t=e.length,r=this._wasm.exports.allocate_mappings(t),o=new Uint8Array(this._wasm.exports.memory.buffer,r,t);for(let n=0;n<t;n++)o[n]=e.charCodeAt(n);const i=this._wasm.exports.parse_mappings(r);if(!i){const e=this._wasm.exports.get_last_error();let n=`Error parsing mappings (code ${e}): `;switch(e){case 1:n+="the mappings contained a negative line, column, source index, or name index";break;case 2:n+="the mappings contained a number larger than 2**32";break;case 3:n+="reached EOF while in the middle of parsing a VLQ";break;case 4:n+="invalid base 64 character while parsing a VLQ";break;default:n+="unknown error code"}throw new Error(n)}this._mappingsPtr=i}eachMapping(e,n,t){const o=n||null,i=t||u.GENERATED_ORDER,s=this.sourceRoot;this._wasm.withMappingCallback(n=>{null!==n.source&&(n.source=this._sources.at(n.source),n.source=r.computeSourceURL(s,n.source,this._sourceMapURL),null!==n.name&&(n.name=this._names.at(n.name))),e.call(o,n)},()=>{switch(i){case u.GENERATED_ORDER:this._wasm.exports.by_generated_location(this._getMappingsPtr());break;case u.ORIGINAL_ORDER:this._wasm.exports.by_original_location(this._getMappingsPtr());break;default:throw new Error("Unknown order of iteration.")}})}allGeneratedPositionsFor(e){let n=r.getArg(e,"source");const t=r.getArg(e,"line"),o=e.column||0;if((n=this._findSourceIndex(n))<0)return[];if(t<1)throw new Error("Line numbers must be >= 1");if(o<0)throw new Error("Column numbers must be >= 0");const i=[];return this._wasm.withMappingCallback(e=>{let n=e.lastGeneratedColumn;this._computedColumnSpans&&null===n&&(n=1/0),i.push({line:e.generatedLine,column:e.generatedColumn,lastColumn:n})},()=>{this._wasm.exports.all_generated_locations_for(this._getMappingsPtr(),n,t-1,"column"in e,o)}),i}destroy(){0!==this._mappingsPtr&&(this._wasm.exports.free_mappings(this._mappingsPtr),this._mappingsPtr=0)}computeColumnSpans(){this._computedColumnSpans||(this._wasm.exports.compute_column_spans(this._getMappingsPtr()),this._computedColumnSpans=!0)}originalPositionFor(e){const n={generatedLine:r.getArg(e,"line"),generatedColumn:r.getArg(e,"column")};if(n.generatedLine<1)throw new Error("Line numbers must be >= 1");if(n.generatedColumn<0)throw new Error("Column numbers must be >= 0");let t,o=r.getArg(e,"bias",u.GREATEST_LOWER_BOUND);if(null==o&&(o=u.GREATEST_LOWER_BOUND),this._wasm.withMappingCallback(e=>t=e,()=>{this._wasm.exports.original_location_for(this._getMappingsPtr(),n.generatedLine-1,n.generatedColumn,o)}),t&&t.generatedLine===n.generatedLine){let e=r.getArg(t,"source",null);null!==e&&(e=this._sources.at(e),e=r.computeSourceURL(this.sourceRoot,e,this._sourceMapURL));let n=r.getArg(t,"name",null);return null!==n&&(n=this._names.at(n)),{source:e,line:r.getArg(t,"originalLine",null),column:r.getArg(t,"originalColumn",null),name:n}}return{source:null,line:null,column:null,name:null}}hasContentsOfAllSources(){return!!this.sourcesContent&&(this.sourcesContent.length>=this._sources.size()&&!this.sourcesContent.some(function(e){return null==e}))}sourceContentFor(e,n){if(!this.sourcesContent)return null;const t=this._findSourceIndex(e);if(t>=0)return this.sourcesContent[t];let o,i=e;if(null!=this.sourceRoot&&(i=r.relative(this.sourceRoot,i)),null!=this.sourceRoot&&(o=r.urlParse(this.sourceRoot))){const e=i.replace(/^file:\/\//,"");if("file"==o.scheme&&this._sources.has(e))return this.sourcesContent[this._sources.indexOf(e)];if((!o.path||"/"==o.path)&&this._sources.has("/"+i))return this.sourcesContent[this._sources.indexOf("/"+i)]}if(n)return null;throw new Error('"'+i+'" is not in the SourceMap.')}generatedPositionFor(e){let n=r.getArg(e,"source");if((n=this._findSourceIndex(n))<0)return{line:null,column:null,lastColumn:null};const t={source:n,originalLine:r.getArg(e,"line"),originalColumn:r.getArg(e,"column")};if(t.originalLine<1)throw new Error("Line numbers must be >= 1");if(t.originalColumn<0)throw new Error("Column numbers must be >= 0");let o,i=r.getArg(e,"bias",u.GREATEST_LOWER_BOUND);if(null==i&&(i=u.GREATEST_LOWER_BOUND),this._wasm.withMappingCallback(e=>o=e,()=>{this._wasm.exports.generated_location_for(this._getMappingsPtr(),t.source,t.originalLine-1,t.originalColumn,i)}),o&&o.source===t.source){let e=o.lastGeneratedColumn;return this._computedColumnSpans&&null===e&&(e=1/0),{line:r.getArg(o,"generatedLine",null),column:r.getArg(o,"generatedColumn",null),lastColumn:e}}return{line:null,column:null,lastColumn:null}}}c.prototype.consumer=u,n.BasicSourceMapConsumer=c;class g extends u{constructor(e,n){return super(a).then(t=>{let o=e;"string"==typeof e&&(o=r.parseSourceMapInput(e));const s=r.getArg(o,"version"),l=r.getArg(o,"sections");if(s!=t._version)throw new Error("Unsupported version: "+s);t._sources=new i,t._names=new i,t.__generatedMappings=null,t.__originalMappings=null,t.__generatedMappingsUnsorted=null,t.__originalMappingsUnsorted=null;let a={line:-1,column:0};return Promise.all(l.map(e=>{if(e.url)throw new Error("Support for url field in sections not implemented.");const t=r.getArg(e,"offset"),o=r.getArg(t,"line"),i=r.getArg(t,"column");if(o<a.line||o===a.line&&i<a.column)throw new Error("Section offsets must be ordered and non-overlapping.");return a=t,new u(r.getArg(e,"map"),n).then(e=>({generatedOffset:{generatedLine:o+1,generatedColumn:i+1},consumer:e}))})).then(e=>(t._sections=e,t))})}get _generatedMappings(){return this.__generatedMappings||this._sortGeneratedMappings(),this.__generatedMappings}get _originalMappings(){return this.__originalMappings||this._sortOriginalMappings(),this.__originalMappings}get _generatedMappingsUnsorted(){return this.__generatedMappingsUnsorted||this._parseMappings(this._mappings,this.sourceRoot),this.__generatedMappingsUnsorted}get _originalMappingsUnsorted(){return this.__originalMappingsUnsorted||this._parseMappings(this._mappings,this.sourceRoot),this.__originalMappingsUnsorted}_sortGeneratedMappings(){const e=this._generatedMappingsUnsorted;e.sort(r.compareByGeneratedPositionsDeflated),this.__generatedMappings=e}_sortOriginalMappings(){const e=this._originalMappingsUnsorted;e.sort(r.compareByOriginalPositions),this.__originalMappings=e}get sources(){const e=[];for(let n=0;n<this._sections.length;n++)for(let t=0;t<this._sections[n].consumer.sources.length;t++)e.push(this._sections[n].consumer.sources[t]);return e}originalPositionFor(e){const n={generatedLine:r.getArg(e,"line"),generatedColumn:r.getArg(e,"column")},t=o.search(n,this._sections,function(e,n){const t=e.generatedLine-n.generatedOffset.generatedLine;return t||e.generatedColumn-n.generatedOffset.generatedColumn}),i=this._sections[t];return i?i.consumer.originalPositionFor({line:n.generatedLine-(i.generatedOffset.generatedLine-1),column:n.generatedColumn-(i.generatedOffset.generatedLine===n.generatedLine?i.generatedOffset.generatedColumn-1:0),bias:e.bias}):{source:null,line:null,column:null,name:null}}hasContentsOfAllSources(){return this._sections.every(function(e){return e.consumer.hasContentsOfAllSources()})}sourceContentFor(e,n){for(let n=0;n<this._sections.length;n++){const t=this._sections[n].consumer.sourceContentFor(e,!0);if(t)return t}if(n)return null;throw new Error('"'+e+'" is not in the SourceMap.')}generatedPositionFor(e){for(let n=0;n<this._sections.length;n++){const t=this._sections[n];if(-1===t.consumer._findSourceIndex(r.getArg(e,"source")))continue;const o=t.consumer.generatedPositionFor(e);if(o){return{line:o.line+(t.generatedOffset.generatedLine-1),column:o.column+(t.generatedOffset.generatedLine===o.line?t.generatedOffset.generatedColumn-1:0)}}}return{line:null,column:null}}_parseMappings(e,n){const t=this.__generatedMappingsUnsorted=[],o=this.__originalMappingsUnsorted=[];for(let e=0;e<this._sections.length;e++){const n=this._sections[e],i=[];n.consumer.eachMapping(e=>i.push(e));for(let e=0;e<i.length;e++){const s=i[e];let l=r.computeSourceURL(n.consumer.sourceRoot,null,this._sourceMapURL);this._sources.add(l),l=this._sources.indexOf(l);let a=null;s.name&&(this._names.add(s.name),a=this._names.indexOf(s.name));const u={source:l,generatedLine:s.generatedLine+(n.generatedOffset.generatedLine-1),generatedColumn:s.generatedColumn+(n.generatedOffset.generatedLine===s.generatedLine?n.generatedOffset.generatedColumn-1:0),originalLine:s.originalLine,originalColumn:s.originalColumn,name:a};t.push(u),"number"==typeof u.originalLine&&o.push(u)}}}eachMapping(e,n,t){const o=n||null;let i;switch(t||u.GENERATED_ORDER){case u.GENERATED_ORDER:i=this._generatedMappings;break;case u.ORIGINAL_ORDER:i=this._originalMappings;break;default:throw new Error("Unknown order of iteration.")}const s=this.sourceRoot;i.map(function(e){let n=null;return null!==e.source&&(n=this._sources.at(e.source),n=r.computeSourceURL(s,n,this._sourceMapURL)),{source:n,generatedLine:e.generatedLine,generatedColumn:e.generatedColumn,originalLine:e.originalLine,originalColumn:e.originalColumn,name:null===e.name?null:this._names.at(e.name)}},this).forEach(e,o)}_findMapping(e,n,t,r,i,s){if(e[t]<=0)throw new TypeError("Line must be greater than or equal to 1, got "+e[t]);if(e[r]<0)throw new TypeError("Column must be greater than or equal to 0, got "+e[r]);return o.search(e,n,i,s)}allGeneratedPositionsFor(e){const n=r.getArg(e,"line"),t={source:r.getArg(e,"source"),originalLine:n,originalColumn:r.getArg(e,"column",0)};if(t.source=this._findSourceIndex(t.source),t.source<0)return[];if(t.originalLine<1)throw new Error("Line numbers must be >= 1");if(t.originalColumn<0)throw new Error("Column numbers must be >= 0");const i=[];let s=this._findMapping(t,this._originalMappings,"originalLine","originalColumn",r.compareByOriginalPositions,o.LEAST_UPPER_BOUND);if(s>=0){let t=this._originalMappings[s];if(void 0===e.column){const e=t.originalLine;for(;t&&t.originalLine===e;){let e=t.lastGeneratedColumn;this._computedColumnSpans&&null===e&&(e=1/0),i.push({line:r.getArg(t,"generatedLine",null),column:r.getArg(t,"generatedColumn",null),lastColumn:e}),t=this._originalMappings[++s]}}else{const e=t.originalColumn;for(;t&&t.originalLine===n&&t.originalColumn==e;){let e=t.lastGeneratedColumn;this._computedColumnSpans&&null===e&&(e=1/0),i.push({line:r.getArg(t,"generatedLine",null),column:r.getArg(t,"generatedColumn",null),lastColumn:e}),t=this._originalMappings[++s]}}}return i}destroy(){for(let e=0;e<this._sections.length;e++)this._sections[e].consumer.destroy()}}n.IndexedSourceMapConsumer=g},function(e,n,t){const r=t(0);n.MappingList=class{constructor(){this._array=[],this._sorted=!0,this._last={generatedLine:-1,generatedColumn:0}}unsortedForEach(e,n){this._array.forEach(e,n)}add(e){!function(e,n){const t=e.generatedLine,o=n.generatedLine,i=e.generatedColumn,s=n.generatedColumn;return o>t||o==t&&s>=i||r.compareByGeneratedPositionsInflated(e,n)<=0}(this._last,e)?(this._sorted=!1,this._array.push(e)):(this._last=e,this._array.push(e))}toArray(){return this._sorted||(this._array.sort(r.compareByGeneratedPositionsInflated),this._sorted=!0),this._array}}},function(e,n){const t="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".split("");n.encode=function(e){if(0<=e&&e<t.length)return t[e];throw new TypeError("Must be between 0 and 63: "+e)}},function(e,n,t){n.SourceMapGenerator=t(4).SourceMapGenerator,n.SourceMapConsumer=t(10).SourceMapConsumer,n.SourceNode=t(5).SourceNode}])});
\ No newline at end of file
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e[n]}.bind(null,o));return r},t.n=function(e){var n=e&&e.__esModule?function(){return e.default}:function(){return e};return t.d(n,"a",n),n},t.o=function(e,n){return Object.prototype.hasOwnProperty.call(e,n)},t.p="",t(t.s=5)}([function(e,n,t){n.getArg=function(e,n,t){if(n in e)return e[n];if(3===arguments.length)return t;throw new Error('"'+n+'" is a required argument.')};const r=/^data:.+\,.+$/,o="function"==typeof URL?URL:t(7).URL;function s(e){try{return new o(e)}catch(e){return null}}n.urlParse=s;const i=32;const a=function(e){const n=[];return function(t){for(let e=0;e<n.length;e++)if(n[e].input===t){const t=n[0];return n[0]=n[e],n[e]=t,n[0].result}const r=e(t);return n.unshift({input:t,result:r}),n.length>i&&n.pop(),r}}(function(e){let t=e;const r=s(e);if(r){if(!r.pathname)return e;t=r.pathname}const o=n.isAbsolute(t),i=[];let a=0,l=0;for(;;){if(a=l,-1===(l=t.indexOf("/",a))){i.push(t.slice(a));break}for(i.push(t.slice(a,l));l<t.length&&"/"===t[l];)l++}let u=0;for(l=i.length-1;l>=0;l--){const e=i[l];"."===e?i.splice(l,1):".."===e?u++:u>0&&(""===e?(i.splice(l+1,u),u=0):(i.splice(l,2),u--))}return""===(t=i.join("/"))&&(t=o?"/":"."),r?(r.pathname=t,r.toString()):t});function l(e,n){""===e&&(e="."),""===n&&(n=".");const t=s(n),o=s(e);if(o&&(e=o.pathname||"/"),t&&!t.protocol)return o&&(t.protocol=o.protocol),t.toString();if(t||n.match(r))return n;if(o&&!o.host&&!o.pathname)return o.host=n,o.toString();const i="/"===n.charAt(0)?n:a(e.replace(/\/+$/,"")+"/"+n);return o?(o.pathname=i,o.toString()):i}n.normalize=a,n.join=l,n.isAbsolute=function(e){return"/"===e.charAt(0)||!!s(e)},n.relative=function(e,n){""===e&&(e="."),e=e.replace(/\/$/,"");let t=0;for(;0!==n.indexOf(e+"/");){const r=e.lastIndexOf("/");if(r<0)return n;if((e=e.slice(0,r)).match(/^([^\/]+:\/)?\/*$/))return n;++t}return Array(t+1).join("../")+n.substr(e.length+1)};const u=!("__proto__"in Object.create(null));function c(e){return e}function h(e){if(!e)return!1;const n=e.length;if(n<9)return!1;if(95!==e.charCodeAt(n-1)||95!==e.charCodeAt(n-2)||111!==e.charCodeAt(n-3)||116!==e.charCodeAt(n-4)||111!==e.charCodeAt(n-5)||114!==e.charCodeAt(n-6)||112!==e.charCodeAt(n-7)||95!==e.charCodeAt(n-8)||95!==e.charCodeAt(n-9))return!1;for(let t=n-10;t>=0;t--)if(36!==e.charCodeAt(t))return!1;return!0}function p(e,n){return e===n?0:null===e?1:null===n?-1:e>n?1:-1}n.toSetString=u?c:function(e){return h(e)?"$"+e:e},n.fromSetString=u?c:function(e){return h(e)?e.slice(1):e},n.compareByOriginalPositions=function(e,n,t){let r=p(e.source,n.source);return 0!==r?r:0!=(r=e.originalLine-n.originalLine)?r:0!=(r=e.originalColumn-n.originalColumn)||t?r:0!=(r=e.generatedColumn-n.generatedColumn)?r:0!=(r=e.generatedLine-n.generatedLine)?r:p(e.name,n.name)},n.compareByGeneratedPositionsDeflated=function(e,n,t){let r=e.generatedLine-n.generatedLine;return 0!==r?r:0!=(r=e.generatedColumn-n.generatedColumn)||t?r:0!==(r=p(e.source,n.source))?r:0!=(r=e.originalLine-n.originalLine)?r:0!=(r=e.originalColumn-n.originalColumn)?r:p(e.name,n.name)},n.compareByGeneratedPositionsInflated=function(e,n){let t=e.generatedLine-n.generatedLine;return 0!==t?t:0!=(t=e.generatedColumn-n.generatedColumn)?t:0!==(t=p(e.source,n.source))?t:0!=(t=e.originalLine-n.originalLine)?t:0!=(t=e.originalColumn-n.originalColumn)?t:p(e.name,n.name)},n.parseSourceMapInput=function(e){return JSON.parse(e.replace(/^\)]}'[^\n]*\n/,""))},n.computeSourceURL=function(e,n,t){if(n=n||"",e&&("/"!==e[e.length-1]&&"/"!==n[0]&&(e+="/"),n=e+n),t){const e=s(t);if(!e)throw new Error("sourceMapURL could not be parsed");if(e.pathname){const n=e.pathname.lastIndexOf("/");n>=0&&(e.pathname=e.pathname.substring(0,n+1))}n=l(e.toString(),n)}return a(n)}},function(e,n,t){const r=t(2),o=t(0),s=t(3).ArraySet,i=t(15).MappingList;class a{constructor(e){e||(e={}),this._file=o.getArg(e,"file",null),this._sourceRoot=o.getArg(e,"sourceRoot",null),this._skipValidation=o.getArg(e,"skipValidation",!1),this._sources=new s,this._names=new s,this._mappings=new i,this._sourcesContents=null}static fromSourceMap(e){const n=e.sourceRoot,t=new a({file:e.file,sourceRoot:n});return e.eachMapping(function(e){const r={generated:{line:e.generatedLine,column:e.generatedColumn}};null!=e.source&&(r.source=e.source,null!=n&&(r.source=o.relative(n,r.source)),r.original={line:e.originalLine,column:e.originalColumn},null!=e.name&&(r.name=e.name)),t.addMapping(r)}),e.sources.forEach(function(r){let s=r;null!==n&&(s=o.relative(n,r)),t._sources.has(s)||t._sources.add(s);const i=e.sourceContentFor(r);null!=i&&t.setSourceContent(r,i)}),t}addMapping(e){const n=o.getArg(e,"generated"),t=o.getArg(e,"original",null);let 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i=Object.keys||function(e){var n=[];for(var t in e)Object.prototype.hasOwnProperty.call(e,t)&&n.push(t);return n}},function(e,n,t){const r=t(0);n.MappingList=class{constructor(){this._array=[],this._sorted=!0,this._last={generatedLine:-1,generatedColumn:0}}unsortedForEach(e,n){this._array.forEach(e,n)}add(e){!function(e,n){const t=e.generatedLine,o=n.generatedLine,s=e.generatedColumn,i=n.generatedColumn;return o>t||o==t&&i>=s||r.compareByGeneratedPositionsInflated(e,n)<=0}(this._last,e)?(this._sorted=!1,this._array.push(e)):(this._last=e,this._array.push(e))}toArray(){return this._sorted||(this._array.sort(r.compareByGeneratedPositionsInflated),this._sorted=!0),this._array}}},function(e,n,t){const r=t(0),o=t(17),s=t(3).ArraySet,i=(t(2),t(4)),a=t(20),l=Symbol("smcInternal");class u{constructor(e,n){return e==l?Promise.resolve(this):function(e,n){let t=e;"string"==typeof e&&(t=r.parseSourceMapInput(e));const o=null!=t.sections?new h(t,n):new c(t,n);return Promise.resolve(o)}(e,n)}static initialize(e){i.initialize(e["lib/mappings.wasm"])}static fromSourceMap(e,n){return function(e,n){return c.fromSourceMap(e,n)}(e,n)}static async with(e,n,t){const r=await new u(e,n);try{return await t(r)}finally{r.destroy()}}_parseMappings(e,n){throw new Error("Subclasses must implement _parseMappings")}eachMapping(e,n,t){throw new Error("Subclasses must implement eachMapping")}allGeneratedPositionsFor(e){throw new Error("Subclasses must implement allGeneratedPositionsFor")}destroy(){throw new Error("Subclasses must implement destroy")}}u.prototype._version=3,u.GENERATED_ORDER=1,u.ORIGINAL_ORDER=2,u.GREATEST_LOWER_BOUND=1,u.LEAST_UPPER_BOUND=2,n.SourceMapConsumer=u;class c extends u{constructor(e,n){return super(l).then(t=>{let o=e;"string"==typeof e&&(o=r.parseSourceMapInput(e));const i=r.getArg(o,"version");let l=r.getArg(o,"sources");const u=r.getArg(o,"names",[]);let c=r.getArg(o,"sourceRoot",null);const h=r.getArg(o,"sourcesContent",null),p=r.getArg(o,"mappings"),g=r.getArg(o,"file",null);if(i!=t._version)throw new Error("Unsupported version: "+i);return c&&(c=r.normalize(c)),l=l.map(String).map(r.normalize).map(function(e){return c&&r.isAbsolute(c)&&r.isAbsolute(e)?r.relative(c,e):e}),t._names=s.fromArray(u.map(String),!0),t._sources=s.fromArray(l,!0),t._absoluteSources=t._sources.toArray().map(function(e){return r.computeSourceURL(c,e,n)}),t.sourceRoot=c,t.sourcesContent=h,t._mappings=p,t._sourceMapURL=n,t.file=g,t._computedColumnSpans=!1,t._mappingsPtr=0,t._wasm=null,a().then(e=>(t._wasm=e,t))})}_findSourceIndex(e){let n=e;if(null!=this.sourceRoot&&(n=r.relative(this.sourceRoot,n)),this._sources.has(n))return this._sources.indexOf(n);for(let n=0;n<this._absoluteSources.length;++n)if(this._absoluteSources[n]==e)return n;return-1}static fromSourceMap(e,n){return new c(e.toString())}get sources(){return this._absoluteSources.slice()}_getMappingsPtr(){return 0===this._mappingsPtr&&this._parseMappings(this._mappings,this.sourceRoot),this._mappingsPtr}_parseMappings(e,n){const t=e.length,r=this._wasm.exports.allocate_mappings(t),o=new Uint8Array(this._wasm.exports.memory.buffer,r,t);for(let n=0;n<t;n++)o[n]=e.charCodeAt(n);const s=this._wasm.exports.parse_mappings(r);if(!s){const e=this._wasm.exports.get_last_error();let n=`Error parsing mappings (code ${e}): `;switch(e){case 1:n+="the mappings contained a negative line, column, source index, or name index";break;case 2:n+="the mappings contained a number larger than 2**32";break;case 3:n+="reached EOF while in the middle of parsing a VLQ";break;case 4:n+="invalid base 64 character while parsing a VLQ";break;default:n+="unknown error code"}throw new Error(n)}this._mappingsPtr=s}eachMapping(e,n,t){const o=n||null,s=t||u.GENERATED_ORDER,i=this.sourceRoot;this._wasm.withMappingCallback(n=>{null!==n.source&&(n.source=this._sources.at(n.source),n.source=r.computeSourceURL(i,n.source,this._sourceMapURL),null!==n.name&&(n.name=this._names.at(n.name))),e.call(o,n)},()=>{switch(s){case u.GENERATED_ORDER:this._wasm.exports.by_generated_location(this._getMappingsPtr());break;case u.ORIGINAL_ORDER:this._wasm.exports.by_original_location(this._getMappingsPtr());break;default:throw new Error("Unknown order of iteration.")}})}allGeneratedPositionsFor(e){let n=r.getArg(e,"source");const t=r.getArg(e,"line"),o=e.column||0;if((n=this._findSourceIndex(n))<0)return[];if(t<1)throw new Error("Line numbers must be >= 1");if(o<0)throw new Error("Column numbers must be >= 0");const s=[];return this._wasm.withMappingCallback(e=>{let n=e.lastGeneratedColumn;this._computedColumnSpans&&null===n&&(n=1/0),s.push({line:e.generatedLine,column:e.generatedColumn,lastColumn:n})},()=>{this._wasm.exports.all_generated_locations_for(this._getMappingsPtr(),n,t-1,"column"in e,o)}),s}destroy(){0!==this._mappingsPtr&&(this._wasm.exports.free_mappings(this._mappingsPtr),this._mappingsPtr=0)}computeColumnSpans(){this._computedColumnSpans||(this._wasm.exports.compute_column_spans(this._getMappingsPtr()),this._computedColumnSpans=!0)}originalPositionFor(e){const n={generatedLine:r.getArg(e,"line"),generatedColumn:r.getArg(e,"column")};if(n.generatedLine<1)throw new Error("Line numbers must be >= 1");if(n.generatedColumn<0)throw new Error("Column numbers must be >= 0");let t,o=r.getArg(e,"bias",u.GREATEST_LOWER_BOUND);if(null==o&&(o=u.GREATEST_LOWER_BOUND),this._wasm.withMappingCallback(e=>t=e,()=>{this._wasm.exports.original_location_for(this._getMappingsPtr(),n.generatedLine-1,n.generatedColumn,o)}),t&&t.generatedLine===n.generatedLine){let e=r.getArg(t,"source",null);null!==e&&(e=this._sources.at(e),e=r.computeSourceURL(this.sourceRoot,e,this._sourceMapURL));let n=r.getArg(t,"name",null);return null!==n&&(n=this._names.at(n)),{source:e,line:r.getArg(t,"originalLine",null),column:r.getArg(t,"originalColumn",null),name:n}}return{source:null,line:null,column:null,name:null}}hasContentsOfAllSources(){return!!this.sourcesContent&&(this.sourcesContent.length>=this._sources.size()&&!this.sourcesContent.some(function(e){return null==e}))}sourceContentFor(e,n){if(!this.sourcesContent)return null;const t=this._findSourceIndex(e);if(t>=0)return this.sourcesContent[t];let o,s=e;if(null!=this.sourceRoot&&(s=r.relative(this.sourceRoot,s)),null!=this.sourceRoot&&(o=r.urlParse(this.sourceRoot))){const e=s.replace(/^file:\/\//,"");if("file:"==o.protocol&&this._sources.has(e))return this.sourcesContent[this._sources.indexOf(e)];if((!o.pathname||"/"==o.pathname)&&this._sources.has("/"+s))return this.sourcesContent[this._sources.indexOf("/"+s)]}if(n)return null;throw new Error('"'+s+'" is not in the SourceMap.')}generatedPositionFor(e){let n=r.getArg(e,"source");if((n=this._findSourceIndex(n))<0)return{line:null,column:null,lastColumn:null};const t={source:n,originalLine:r.getArg(e,"line"),originalColumn:r.getArg(e,"column")};if(t.originalLine<1)throw new Error("Line numbers must be >= 1");if(t.originalColumn<0)throw new Error("Column numbers must be >= 0");let o,s=r.getArg(e,"bias",u.GREATEST_LOWER_BOUND);if(null==s&&(s=u.GREATEST_LOWER_BOUND),this._wasm.withMappingCallback(e=>o=e,()=>{this._wasm.exports.generated_location_for(this._getMappingsPtr(),t.source,t.originalLine-1,t.originalColumn,s)}),o&&o.source===t.source){let e=o.lastGeneratedColumn;return this._computedColumnSpans&&null===e&&(e=1/0),{line:r.getArg(o,"generatedLine",null),column:r.getArg(o,"generatedColumn",null),lastColumn:e}}return{line:null,column:null,lastColumn:null}}}c.prototype.consumer=u,n.BasicSourceMapConsumer=c;class h extends u{constructor(e,n){return super(l).then(t=>{let o=e;"string"==typeof e&&(o=r.parseSourceMapInput(e));const i=r.getArg(o,"version"),a=r.getArg(o,"sections");if(i!=t._version)throw new Error("Unsupported version: "+i);t._sources=new s,t._names=new s,t.__generatedMappings=null,t.__originalMappings=null,t.__generatedMappingsUnsorted=null,t.__originalMappingsUnsorted=null;let l={line:-1,column:0};return Promise.all(a.map(e=>{if(e.url)throw new Error("Support for url field in sections not implemented.");const t=r.getArg(e,"offset"),o=r.getArg(t,"line"),s=r.getArg(t,"column");if(o<l.line||o===l.line&&s<l.column)throw new Error("Section offsets must be ordered and non-overlapping.");return l=t,new u(r.getArg(e,"map"),n).then(e=>({generatedOffset:{generatedLine:o+1,generatedColumn:s+1},consumer:e}))})).then(e=>(t._sections=e,t))})}get _generatedMappings(){return this.__generatedMappings||this._sortGeneratedMappings(),this.__generatedMappings}get _originalMappings(){return this.__originalMappings||this._sortOriginalMappings(),this.__originalMappings}get _generatedMappingsUnsorted(){return this.__generatedMappingsUnsorted||this._parseMappings(this._mappings,this.sourceRoot),this.__generatedMappingsUnsorted}get _originalMappingsUnsorted(){return this.__originalMappingsUnsorted||this._parseMappings(this._mappings,this.sourceRoot),this.__originalMappingsUnsorted}_sortGeneratedMappings(){const e=this._generatedMappingsUnsorted;e.sort(r.compareByGeneratedPositionsDeflated),this.__generatedMappings=e}_sortOriginalMappings(){const e=this._originalMappingsUnsorted;e.sort(r.compareByOriginalPositions),this.__originalMappings=e}get sources(){const e=[];for(let n=0;n<this._sections.length;n++)for(let t=0;t<this._sections[n].consumer.sources.length;t++)e.push(this._sections[n].consumer.sources[t]);return e}originalPositionFor(e){const n={generatedLine:r.getArg(e,"line"),generatedColumn:r.getArg(e,"column")},t=o.search(n,this._sections,function(e,n){const t=e.generatedLine-n.generatedOffset.generatedLine;return t||e.generatedColumn-n.generatedOffset.generatedColumn}),s=this._sections[t];return s?s.consumer.originalPositionFor({line:n.generatedLine-(s.generatedOffset.generatedLine-1),column:n.generatedColumn-(s.generatedOffset.generatedLine===n.generatedLine?s.generatedOffset.generatedColumn-1:0),bias:e.bias}):{source:null,line:null,column:null,name:null}}hasContentsOfAllSources(){return this._sections.every(function(e){return e.consumer.hasContentsOfAllSources()})}sourceContentFor(e,n){for(let n=0;n<this._sections.length;n++){const t=this._sections[n].consumer.sourceContentFor(e,!0);if(t)return t}if(n)return null;throw new Error('"'+e+'" is not in the SourceMap.')}generatedPositionFor(e){for(let n=0;n<this._sections.length;n++){const t=this._sections[n];if(-1===t.consumer._findSourceIndex(r.getArg(e,"source")))continue;const o=t.consumer.generatedPositionFor(e);if(o){return{line:o.line+(t.generatedOffset.generatedLine-1),column:o.column+(t.generatedOffset.generatedLine===o.line?t.generatedOffset.generatedColumn-1:0)}}}return{line:null,column:null}}_parseMappings(e,n){const t=this.__generatedMappingsUnsorted=[],o=this.__originalMappingsUnsorted=[];for(let e=0;e<this._sections.length;e++){const n=this._sections[e],s=[];n.consumer.eachMapping(e=>s.push(e));for(let e=0;e<s.length;e++){const i=s[e];let a=r.computeSourceURL(n.consumer.sourceRoot,null,this._sourceMapURL);this._sources.add(a),a=this._sources.indexOf(a);let l=null;i.name&&(this._names.add(i.name),l=this._names.indexOf(i.name));const u={source:a,generatedLine:i.generatedLine+(n.generatedOffset.generatedLine-1),generatedColumn:i.generatedColumn+(n.generatedOffset.generatedLine===i.generatedLine?n.generatedOffset.generatedColumn-1:0),originalLine:i.originalLine,originalColumn:i.originalColumn,name:l};t.push(u),"number"==typeof u.originalLine&&o.push(u)}}}eachMapping(e,n,t){const o=n||null;let s;switch(t||u.GENERATED_ORDER){case u.GENERATED_ORDER:s=this._generatedMappings;break;case u.ORIGINAL_ORDER:s=this._originalMappings;break;default:throw new Error("Unknown order of iteration.")}const i=this.sourceRoot;s.map(function(e){let n=null;return null!==e.source&&(n=this._sources.at(e.source),n=r.computeSourceURL(i,n,this._sourceMapURL)),{source:n,generatedLine:e.generatedLine,generatedColumn:e.generatedColumn,originalLine:e.originalLine,originalColumn:e.originalColumn,name:null===e.name?null:this._names.at(e.name)}},this).forEach(e,o)}_findMapping(e,n,t,r,s,i){if(e[t]<=0)throw new TypeError("Line must be greater than or equal to 1, got "+e[t]);if(e[r]<0)throw new TypeError("Column must be greater than or equal to 0, got "+e[r]);return o.search(e,n,s,i)}allGeneratedPositionsFor(e){const n=r.getArg(e,"line"),t={source:r.getArg(e,"source"),originalLine:n,originalColumn:r.getArg(e,"column",0)};if(t.source=this._findSourceIndex(t.source),t.source<0)return[];if(t.originalLine<1)throw new Error("Line numbers must be >= 1");if(t.originalColumn<0)throw new Error("Column numbers must be >= 0");const s=[];let i=this._findMapping(t,this._originalMappings,"originalLine","originalColumn",r.compareByOriginalPositions,o.LEAST_UPPER_BOUND);if(i>=0){let t=this._originalMappings[i];if(void 0===e.column){const e=t.originalLine;for(;t&&t.originalLine===e;){let e=t.lastGeneratedColumn;this._computedColumnSpans&&null===e&&(e=1/0),s.push({line:r.getArg(t,"generatedLine",null),column:r.getArg(t,"generatedColumn",null),lastColumn:e}),t=this._originalMappings[++i]}}else{const e=t.originalColumn;for(;t&&t.originalLine===n&&t.originalColumn==e;){let e=t.lastGeneratedColumn;this._computedColumnSpans&&null===e&&(e=1/0),s.push({line:r.getArg(t,"generatedLine",null),column:r.getArg(t,"generatedColumn",null),lastColumn:e}),t=this._originalMappings[++i]}}}return s}destroy(){for(let e=0;e<this._sections.length;e++)this._sections[e].consumer.destroy()}}n.IndexedSourceMapConsumer=h},function(e,n){n.GREATEST_LOWER_BOUND=1,n.LEAST_UPPER_BOUND=2,n.search=function(e,t,r,o){if(0===t.length)return-1;let s=function e(t,r,o,s,i,a){const l=Math.floor((r-t)/2)+t,u=i(o,s[l],!0);return 0===u?l:u>0?r-l>1?e(l,r,o,s,i,a):a==n.LEAST_UPPER_BOUND?r<s.length?r:-1:l:l-t>1?e(t,l,o,s,i,a):a==n.LEAST_UPPER_BOUND?l:t<0?-1:t}(-1,t.length,e,t,r,o||n.GREATEST_LOWER_BOUND);if(s<0)return-1;for(;s-1>=0&&0===r(t[s],t[s-1],!0);)--s;return s}},function(n,t){n.exports=e},function(e,t){e.exports=n},function(e,n,t){const r=t(4);let o=null;e.exports=function(){if(o)return o;const e=[];return o=r().then(n=>WebAssembly.instantiate(n,{env:{mapping_callback(n,t,r,o,s,i,a,l,u,c){const h=new function(){this.generatedLine=0,this.generatedColumn=0,this.lastGeneratedColumn=null,this.source=null,this.originalLine=null,this.originalColumn=null,this.name=null};h.generatedLine=n+1,h.generatedColumn=t,r&&(h.lastGeneratedColumn=o-1),s&&(h.source=i,h.originalLine=a+1,h.originalColumn=l,u&&(h.name=c)),e[e.length-1](h)},start_all_generated_locations_for(){console.time("all_generated_locations_for")},end_all_generated_locations_for(){console.timeEnd("all_generated_locations_for")},start_compute_column_spans(){console.time("compute_column_spans")},end_compute_column_spans(){console.timeEnd("compute_column_spans")},start_generated_location_for(){console.time("generated_location_for")},end_generated_location_for(){console.timeEnd("generated_location_for")},start_original_location_for(){console.time("original_location_for")},end_original_location_for(){console.timeEnd("original_location_for")},start_parse_mappings(){console.time("parse_mappings")},end_parse_mappings(){console.timeEnd("parse_mappings")},start_sort_by_generated_location(){console.time("sort_by_generated_location")},end_sort_by_generated_location(){console.timeEnd("sort_by_generated_location")},start_sort_by_original_location(){console.time("sort_by_original_location")},end_sort_by_original_location(){console.timeEnd("sort_by_original_location")}}})).then(n=>({exports:n.instance.exports,withMappingCallback:(n,t)=>{e.push(n);try{t()}finally{e.pop()}}})).then(null,e=>{throw o=null,e})}},function(e,n,t){const r=t(1).SourceMapGenerator,o=t(0),s=/(\r?\n)/,i=10,a="$$$isSourceNode$$$";class l{constructor(e,n,t,r,o){this.children=[],this.sourceContents={},this.line=null==e?null:e,this.column=null==n?null:n,this.source=null==t?null:t,this.name=null==o?null:o,this[a]=!0,null!=r&&this.add(r)}static fromStringWithSourceMap(e,n,t){const r=new l,i=e.split(s);let a=0;const u=function(){return e()+(e()||"");function e(){return a<i.length?i[a++]:void 0}};let c,h=1,p=0,g=null;return n.eachMapping(function(e){if(null!==g){if(!(h<e.generatedLine)){const n=(c=i[a]||"").substr(0,e.generatedColumn-p);return i[a]=c.substr(e.generatedColumn-p),p=e.generatedColumn,f(g,n),void(g=e)}f(g,u()),h++,p=0}for(;h<e.generatedLine;)r.add(u()),h++;p<e.generatedColumn&&(c=i[a]||"",r.add(c.substr(0,e.generatedColumn)),i[a]=c.substr(e.generatedColumn),p=e.generatedColumn),g=e},this),a<i.length&&(g&&f(g,u()),r.add(i.splice(a).join(""))),n.sources.forEach(function(e){const s=n.sourceContentFor(e);null!=s&&(null!=t&&(e=o.join(t,e)),r.setSourceContent(e,s))}),r;function f(e,n){if(null===e||void 0===e.source)r.add(n);else{const s=t?o.join(t,e.source):e.source;r.add(new l(e.originalLine,e.originalColumn,s,n,e.name))}}}add(e){if(Array.isArray(e))e.forEach(function(e){this.add(e)},this);else{if(!e[a]&&"string"!=typeof e)throw new TypeError("Expected a SourceNode, string, or an array of SourceNodes and strings. Got "+e);e&&this.children.push(e)}return this}prepend(e){if(Array.isArray(e))for(let n=e.length-1;n>=0;n--)this.prepend(e[n]);else{if(!e[a]&&"string"!=typeof e)throw new TypeError("Expected a SourceNode, string, or an array of SourceNodes and strings. Got "+e);this.children.unshift(e)}return this}walk(e){let n;for(let t=0,r=this.children.length;t<r;t++)(n=this.children[t])[a]?n.walk(e):""!==n&&e(n,{source:this.source,line:this.line,column:this.column,name:this.name})}join(e){let n,t;const r=this.children.length;if(r>0){for(n=[],t=0;t<r-1;t++)n.push(this.children[t]),n.push(e);n.push(this.children[t]),this.children=n}return this}replaceRight(e,n){const t=this.children[this.children.length-1];return t[a]?t.replaceRight(e,n):"string"==typeof t?this.children[this.children.length-1]=t.replace(e,n):this.children.push("".replace(e,n)),this}setSourceContent(e,n){this.sourceContents[o.toSetString(e)]=n}walkSourceContents(e){for(let n=0,t=this.children.length;n<t;n++)this.children[n][a]&&this.children[n].walkSourceContents(e);const n=Object.keys(this.sourceContents);for(let t=0,r=n.length;t<r;t++)e(o.fromSetString(n[t]),this.sourceContents[n[t]])}toString(){let e="";return this.walk(function(n){e+=n}),e}toStringWithSourceMap(e){const n={code:"",line:1,column:0},t=new r(e);let o=!1,s=null,a=null,l=null,u=null;return this.walk(function(e,r){n.code+=e,null!==r.source&&null!==r.line&&null!==r.column?(s===r.source&&a===r.line&&l===r.column&&u===r.name||t.addMapping({source:r.source,original:{line:r.line,column:r.column},generated:{line:n.line,column:n.column},name:r.name}),s=r.source,a=r.line,l=r.column,u=r.name,o=!0):o&&(t.addMapping({generated:{line:n.line,column:n.column}}),s=null,o=!1);for(let a=0,l=e.length;a<l;a++)e.charCodeAt(a)===i?(n.line++,n.column=0,a+1===l?(s=null,o=!1):o&&t.addMapping({source:r.source,original:{line:r.line,column:r.column},generated:{line:n.line,column:n.column},name:r.name})):n.column++}),this.walkSourceContents(function(e,n){t.setSourceContent(e,n)}),{code:n.code,map:t}}}n.SourceNode=l}])});
\ No newline at end of file
diff --git a/lib/source-map-consumer.js b/lib/source-map-consumer.js
index 9aaf92f5..747ba504 100644
--- a/lib/source-map-consumer.js
+++ b/lib/source-map-consumer.js
@@ -567,12 +567,12 @@ class BasicSourceMapConsumer extends SourceMapConsumer {
       // behave like it would if they were running a local HTTP server. See
       // https://bugzilla.mozilla.org/show_bug.cgi?id=885597.
       const fileUriAbsPath = relativeSource.replace(/^file:\/\//, "");
-      if (url.scheme == "file"
+      if (url.protocol == "file:"
           && this._sources.has(fileUriAbsPath)) {
         return this.sourcesContent[this._sources.indexOf(fileUriAbsPath)];
       }
 
-      if ((!url.path || url.path == "/")
+      if ((!url.pathname || url.pathname == "/")
           && this._sources.has("/" + relativeSource)) {
         return this.sourcesContent[this._sources.indexOf("/" + relativeSource)];
       }
diff --git a/lib/util.js b/lib/util.js
index 35bd93d6..0ae7b8cd 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -26,46 +26,18 @@ function getArg(aArgs, aName, aDefaultValue) {
 }
 exports.getArg = getArg;
 
-const urlRegexp = /^(?:([\w+\-.]+):)?\/\/(?:(\w+:\w+)@)?([\w.-]*)(?::(\d+))?(.*)$/;
 const dataUrlRegexp = /^data:.+\,.+$/;
+const URLConstructor = (typeof URL == "function") ? URL : require("url").URL;
 
 function urlParse(aUrl) {
-  const match = aUrl.match(urlRegexp);
-  if (!match) {
+  try {
+    return new URLConstructor(aUrl);
+  } catch (e) {
     return null;
   }
-  return {
-    scheme: match[1],
-    auth: match[2],
-    host: match[3],
-    port: match[4],
-    path: match[5]
-  };
 }
 exports.urlParse = urlParse;
 
-function urlGenerate(aParsedUrl) {
-  let url = "";
-  if (aParsedUrl.scheme) {
-    url += aParsedUrl.scheme + ":";
-  }
-  url += "//";
-  if (aParsedUrl.auth) {
-    url += aParsedUrl.auth + "@";
-  }
-  if (aParsedUrl.host) {
-    url += aParsedUrl.host;
-  }
-  if (aParsedUrl.port) {
-    url += ":" + aParsedUrl.port;
-  }
-  if (aParsedUrl.path) {
-    url += aParsedUrl.path;
-  }
-  return url;
-}
-exports.urlGenerate = urlGenerate;
-
 const MAX_CACHED_INPUTS = 32;
 
 /**
@@ -118,10 +90,10 @@ const normalize = lruMemoize(function normalize(aPath) {
   let path = aPath;
   const url = urlParse(aPath);
   if (url) {
-    if (!url.path) {
+    if (!url.pathname) {
       return aPath;
     }
-    path = url.path;
+    path = url.pathname;
   }
   const isAbsolute = exports.isAbsolute(path);
 
@@ -171,8 +143,8 @@ const normalize = lruMemoize(function normalize(aPath) {
   }
 
   if (url) {
-    url.path = path;
-    return urlGenerate(url);
+    url.pathname = path;
+    return url.toString();
   }
   return path;
 });
@@ -204,15 +176,15 @@ function join(aRoot, aPath) {
   const aPathUrl = urlParse(aPath);
   const aRootUrl = urlParse(aRoot);
   if (aRootUrl) {
-    aRoot = aRootUrl.path || "/";
+    aRoot = aRootUrl.pathname || "/";
   }
 
   // `join(foo, '//www.example.org')`
-  if (aPathUrl && !aPathUrl.scheme) {
+  if (aPathUrl && !aPathUrl.protocol) {
     if (aRootUrl) {
-      aPathUrl.scheme = aRootUrl.scheme;
+      aPathUrl.protocol = aRootUrl.protocol;
     }
-    return urlGenerate(aPathUrl);
+    return aPathUrl.toString();
   }
 
   if (aPathUrl || aPath.match(dataUrlRegexp)) {
@@ -220,9 +192,9 @@ function join(aRoot, aPath) {
   }
 
   // `join('http://', 'www.example.com')`
-  if (aRootUrl && !aRootUrl.host && !aRootUrl.path) {
+  if (aRootUrl && !aRootUrl.host && !aRootUrl.pathname) {
     aRootUrl.host = aPath;
-    return urlGenerate(aRootUrl);
+    return aRootUrl.toString();
   }
 
   const joined = aPath.charAt(0) === "/"
@@ -230,15 +202,15 @@ function join(aRoot, aPath) {
     : normalize(aRoot.replace(/\/+$/, "") + "/" + aPath);
 
   if (aRootUrl) {
-    aRootUrl.path = joined;
-    return urlGenerate(aRootUrl);
+    aRootUrl.pathname = joined;
+    return aRootUrl.toString();
   }
   return joined;
 }
 exports.join = join;
 
 exports.isAbsolute = function(aPath) {
-  return aPath.charAt(0) === "/" || urlRegexp.test(aPath);
+  return aPath.charAt(0) === "/" || !!urlParse(aPath);
 };
 
 /**
@@ -517,28 +489,17 @@ function computeSourceURL(sourceRoot, sourceURL, sourceMapURL) {
   // this code block is conditional.  However, it's preferable to pass
   // the source map URL to SourceMapConsumer, so that this function
   // can implement the source URL resolution algorithm as outlined in
-  // the spec.  This block is basically the equivalent of:
-  //    new URL(sourceURL, sourceMapURL).toString()
-  // ... except it avoids using URL, which wasn't available in the
-  // older releases of node still supported by this library.
+  // the spec.
   //
   // The spec says:
   //   If the sources are not absolute URLs after prepending of the
   //   “sourceRoot”, the sources are resolved relative to the
   //   SourceMap (like resolving script src in a html document).
   if (sourceMapURL) {
-    const parsed = urlParse(sourceMapURL);
-    if (!parsed) {
-      throw new Error("sourceMapURL could not be parsed");
-    }
-    if (parsed.path) {
-      // Strip the last path component, but keep the "/".
-      const index = parsed.path.lastIndexOf("/");
-      if (index >= 0) {
-        parsed.path = parsed.path.substring(0, index + 1);
-      }
+    try {
+      sourceURL = (new URLConstructor(sourceURL, sourceMapURL)).toString();
+    } catch (e) {
     }
-    sourceURL = join(urlGenerate(parsed), sourceURL);
   }
 
   return normalize(sourceURL);
diff --git a/test/test-source-map-consumer.js b/test/test-source-map-consumer.js
index 6d6d47d4..fb026d53 100644
--- a/test/test-source-map-consumer.js
+++ b/test/test-source-map-consumer.js
@@ -1295,7 +1295,7 @@ exports["test webpack URL resolution"] = async function(assert) {
   const consumer = await new SourceMapConsumer(map);
 
   assert.equal(consumer.sources.length, 1);
-  assert.equal(consumer.sources[0], "webpack:///webpack/bootstrap 67e184f9679733298d44");
+  assert.equal(consumer.sources[0], "webpack:///webpack/bootstrap%2067e184f9679733298d44");
 
   consumer.destroy();
 };
@@ -1312,7 +1312,7 @@ exports["test webpack URL resolution with sourceMapURL"] = async function(assert
   const consumer = await new SourceMapConsumer(map, "http://www.example.com/q.js.map");
 
   assert.equal(consumer.sources.length, 1);
-  assert.equal(consumer.sources[0], "webpack:///webpack/bootstrap 67e184f9679733298d44");
+  assert.equal(consumer.sources[0], "webpack:///webpack/bootstrap%2067e184f9679733298d44");
 
   consumer.destroy();
 };
@@ -1368,6 +1368,22 @@ exports["test absolute sourceURL resolution with sourceMapURL"] = async function
   consumer.destroy();
 };
 
+exports["test sourceURL resolution with null sourceRoot and blob sourceMapURL"] = async function(assert) {
+  const map = {
+    version: 3,
+    sources:  ["something.js"],
+    names: [],
+    mappings: "CAAS",
+    file: "static/js/manifest.b7cf97680f7a50fa150f.js",
+    sourceRoot: null,
+  };
+  const consumer = await new SourceMapConsumer(map, "blob:http://exmaple.com/12345-12345-12345");
+
+  assert.equal(consumer.sources.length, 1);
+  assert.equal(consumer.sources[0], "something.js");
+
+  consumer.destroy();
+};
 exports["test line numbers > 2**32"] = async function(assert) {
   const map = await new SourceMapConsumer({
     version: 3,
diff --git a/test/test-util.js b/test/test-util.js
index e665847c..c2cbb4a5 100644
--- a/test/test-util.js
+++ b/test/test-util.js
@@ -8,20 +8,22 @@
 const libUtil = require("../lib/util");
 
 exports["test urls"] = function(assert) {
-  const assertUrl = function(url) {
-    assert.equal(url, libUtil.urlGenerate(libUtil.urlParse(url)));
+  const assertUrl = function(url, expect) {
+    expect = expect || url;
+    assert.equal(expect, libUtil.urlParse(url).toString());
   };
-  assertUrl("http://");
-  assertUrl("http://www.example.com");
-  assertUrl("http://user:pass@www.example.com");
-  assertUrl("http://www.example.com:80");
+  assertUrl("http://www.example.com", "http://www.example.com/");
+  assertUrl("http://user:pass@www.example.com", "http://user:pass@www.example.com/");
+  assertUrl("http://www.example.com:80", "http://www.example.com/");
   assertUrl("http://www.example.com/");
   assertUrl("http://www.example.com/foo/bar");
   assertUrl("http://www.example.com/foo/bar/");
-  assertUrl("http://user:pass@www.example.com:80/foo/bar/");
+  assertUrl("http://user:pass@www.example.com:80/foo/bar/",
+            "http://user:pass@www.example.com/foo/bar/");
+
+  // From https://bugzilla.mozilla.org/show_bug.cgi?id=1451274
+  assertUrl("data:application/json;base64,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");
 
-  assertUrl("//");
-  assertUrl("//www.example.com");
   assertUrl("file:///www.example.com");
 
   assert.equal(libUtil.urlParse(""), null);
@@ -31,19 +33,19 @@ exports["test urls"] = function(assert) {
   assert.equal(libUtil.urlParse("a/b"), null);
   assert.equal(libUtil.urlParse("a//b"), null);
   assert.equal(libUtil.urlParse("/a"), null);
-  assert.equal(libUtil.urlParse("data:foo,bar"), null);
+  assertUrl("data:foo,bar");
 
   let parsed = libUtil.urlParse("http://x-y.com/bar");
-  assert.equal(parsed.scheme, "http");
+  assert.equal(parsed.protocol, "http:");
   assert.equal(parsed.host, "x-y.com");
-  assert.equal(parsed.path, "/bar");
+  assert.equal(parsed.pathname, "/bar");
 
   const webpackURL = "webpack:///webpack/bootstrap 67e184f9679733298d44";
   parsed = libUtil.urlParse(webpackURL);
-  assert.equal(parsed.scheme, "webpack");
+  assert.equal(parsed.protocol, "webpack:");
   assert.equal(parsed.host, "");
-  assert.equal(parsed.path, "/webpack/bootstrap 67e184f9679733298d44");
-  assert.equal(webpackURL, libUtil.urlGenerate(parsed));
+  assert.equal(parsed.pathname, "/webpack/bootstrap%2067e184f9679733298d44");
+  assert.equal(webpackURL, parsed.toString().replace(/%20/, " "));
 };
 
 exports["test normalize()"] = function(assert) {
@@ -73,12 +75,12 @@ exports["test normalize()"] = function(assert) {
   assert.equal(libUtil.normalize("a/././."), "a");
 
   assert.equal(libUtil.normalize("/a/b//c////d/////"), "/a/b/c/d/");
-  assert.equal(libUtil.normalize("///a/b//c////d/////"), "///a/b/c/d/");
+  assert.equal(libUtil.normalize("///a/b//c////d/////"), "/a/b/c/d/");
   assert.equal(libUtil.normalize("a/b//c////d"), "a/b/c/d");
 
   assert.equal(libUtil.normalize(".///.././../a/b//./.."), "../../a");
 
-  assert.equal(libUtil.normalize("http://www.example.com"), "http://www.example.com");
+  assert.equal(libUtil.normalize("http://www.example.com"), "http://www.example.com/");
   assert.equal(libUtil.normalize("http://www.example.com/"), "http://www.example.com/");
   assert.equal(libUtil.normalize("http://www.example.com/./..//a/b/c/.././d//"), "http://www.example.com/a/b/d/");
 };
@@ -167,8 +169,8 @@ exports["test join()"] = function(assert) {
   assert.equal(libUtil.join("http://foo.org/", "."), "http://foo.org/");
   assert.equal(libUtil.join("http://foo.org//", ""), "http://foo.org/");
   assert.equal(libUtil.join("http://foo.org//", "."), "http://foo.org/");
-  assert.equal(libUtil.join("//www.example.com", ""), "//www.example.com/");
-  assert.equal(libUtil.join("//www.example.com", "."), "//www.example.com/");
+  assert.equal(libUtil.join("//www.example.com", ""), "/www.example.com");
+  assert.equal(libUtil.join("//www.example.com", "."), "/www.example.com");
 
 
   assert.equal(libUtil.join("http://foo.org/a", "b"), "http://foo.org/a/b");
@@ -177,7 +179,6 @@ exports["test join()"] = function(assert) {
   assert.equal(libUtil.join("http://foo.org/a", "b/"), "http://foo.org/a/b/");
   assert.equal(libUtil.join("http://foo.org/a", "b//"), "http://foo.org/a/b/");
   assert.equal(libUtil.join("http://foo.org/a/", "/b"), "http://foo.org/b");
-  assert.equal(libUtil.join("http://foo.org/a//", "//b"), "http://b");
 
   assert.equal(libUtil.join("http://foo.org/a", ".."), "http://foo.org/");
   assert.equal(libUtil.join("http://foo.org/a", "../b"), "http://foo.org/b");
@@ -199,11 +200,10 @@ exports["test join()"] = function(assert) {
   assert.equal(libUtil.join("http://foo.org//", "/a"), "http://foo.org/a");
 
 
-  assert.equal(libUtil.join("http://", "www.example.com"), "http://www.example.com");
+  assert.equal(libUtil.join("http://", "www.example.com"), "http://www.example.com/");
   assert.equal(libUtil.join("file:///", "www.example.com"), "file:///www.example.com");
   assert.equal(libUtil.join("http://", "ftp://example.com"), "ftp://example.com");
 
-  assert.equal(libUtil.join("http://www.example.com", "//foo.org/bar"), "http://foo.org/bar");
   assert.equal(libUtil.join("//www.example.com", "//foo.org/bar"), "//foo.org/bar");
 };