mirror of https://github.com/lukechilds/rollup.git
Rich-Harris
9 years ago
9 changed files with 119 additions and 125 deletions
@ -1,72 +0,0 @@ |
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import { encode, decode } from 'sourcemap-codec'; |
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function traceSegment ( loc, mappings ) { |
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const line = loc[0]; |
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const column = loc[1]; |
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const segments = mappings[ line ]; |
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if ( !segments ) return null; |
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for ( let i = 0; i < segments.length; i += 1 ) { |
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const segment = segments[i]; |
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if ( segment[0] > column ) return null; |
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if ( segment[0] === column ) { |
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if ( segment[1] !== 0 ) { |
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throw new Error( 'Bad sourcemap' ); |
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} |
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return [ segment[2], segment[3] ]; |
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} |
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} |
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return null; |
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} |
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export default function collapseSourcemaps ( map, modules ) { |
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const chains = modules.map( module => { |
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return module.sourceMapChain.map( map => { |
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if ( !map ) throw new Error( 'Cannot generate a sourcemap if non-sourcemap-generating transformers are used' ); |
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return decode( map.mappings ); |
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}); |
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}); |
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const decodedMappings = decode( map.mappings ); |
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const tracedMappings = decodedMappings.map( line => { |
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let tracedLine = []; |
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line.forEach( segment => { |
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const sourceIndex = segment[1]; |
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const sourceCodeLine = segment[2]; |
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const sourceCodeColumn = segment[3]; |
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const chain = chains[ sourceIndex ]; |
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let i = chain.length; |
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let traced = [ sourceCodeLine, sourceCodeColumn ]; |
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while ( i-- && traced ) { |
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traced = traceSegment( traced, chain[i] ); |
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} |
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if ( traced ) { |
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tracedLine.push([ |
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segment[0], |
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segment[1], |
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traced[0], |
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traced[1] |
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// TODO name?
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]); |
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} |
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}); |
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return tracedLine; |
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}); |
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map.sourcesContent = modules.map( module => module.originalCode ); |
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map.mappings = encode( tracedMappings ); |
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return map; |
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} |
@ -0,0 +1,87 @@ |
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import { encode, decode } from 'sourcemap-codec'; |
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function Source ( map, sources ) { |
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if ( !map ) throw new Error( 'Cannot generate a sourcemap if non-sourcemap-generating transformers are used' ); |
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this.sources = sources; |
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this.names = map.names; |
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this.mappings = decode( map.mappings ); |
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} |
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Source.prototype = { // TODO bring into line with others post-https://github.com/rollup/rollup/pull/386
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traceMappings () { |
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return this.mappings.map( line => { |
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let tracedLine = []; |
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line.forEach( segment => { |
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const source = this.sources[ segment[1] ]; |
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const sourceCodeLine = segment[2]; |
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const sourceCodeColumn = segment[3]; |
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const traced = source.traceSegment( sourceCodeLine, sourceCodeColumn ); |
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if ( traced ) { |
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tracedLine.push([ |
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segment[0], |
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traced.index, |
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traced.line, |
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traced.column |
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// TODO name?
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]); |
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} |
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}); |
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return tracedLine; |
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}); |
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}, |
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traceSegment ( line, column ) { |
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const segments = this.mappings[ line ]; |
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if ( !segments ) return null; |
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for ( let i = 0; i < segments.length; i += 1 ) { |
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const segment = segments[i]; |
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if ( segment[0] > column ) return null; |
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if ( segment[0] === column ) { |
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const source = this.sources[ segment[1] ]; |
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if ( !source ) throw new Error( 'Bad sourcemap' ); |
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if ( source.isOriginal ) { |
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return { index: source.index, line: segment[2], column: segment[3] }; |
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} |
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return source.traceSegment( segment[2], segment[3] ); |
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} |
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} |
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return null; |
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} |
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}; |
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export default function collapseSourcemaps ( map, modules, bundleSourcemapChain ) { |
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const sources = modules.map( ( module, i ) => { |
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let source = { isOriginal: true, index: i }; |
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module.sourceMapChain.forEach( map => { |
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source = new Source( map, [ source ]); |
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}); |
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return source; |
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}); |
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let source = new Source( map, sources ); |
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bundleSourcemapChain.forEach( map => { |
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source = new Source( map, [ source ] ); |
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}); |
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// we re-use the `map` object because it has convenient toString/toURL methods
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map.sourcesContent = modules.map( module => module.originalCode ); |
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map.mappings = encode( source.traceMappings() ); |
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return map; |
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} |
@ -0,0 +1,3 @@ |
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export default function removeSourceMappingURL ( code ) { |
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} |
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