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91 lines
2.4 KiB
91 lines
2.4 KiB
4 years ago
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# source-list-map
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## API
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### Example
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``` js
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var SourceListMap = require("source-list-map").SourceListMap;
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// Create a new map
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var map = new SourceListMap();
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// Add generated code that is map line to line to some soure
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map.add("Generated\ncode1\n", "source-code.js", "Orginal\nsource");
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// Add generated code that isn't mapped
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map.add("Generated\ncode2\n");
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// Get SourceMap and generated source
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map.toStringWithSourceMap({ file: "generated-code.js" });
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// {
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// source: 'Generated\ncode1\nGenerated\ncode2\n',
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// map: {
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// version: 3,
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// file: 'generated-code.js',
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// sources: [ 'source-code.js' ],
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// sourcesContent: [ 'Orginal\nsource' ],
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// mappings: 'AAAA;AACA;;;'
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// }
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// }
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// Convert existing SourceMap into SourceListMap
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// (Only the first mapping per line is preserved)
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var fromStringWithSourceMap = require("source-list-map").fromStringWithSourceMap;
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var map = fromStringWithSourceMap("Generated\ncode", { version: 3, ... });
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```
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### `new SourceListMap()`
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### `SourceListMap.prototype.add`
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``` js
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SourceListMap.prototype.add(generatedCode: string)
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SourceListMap.prototype.add(generatedCode: string, source: string, originalSource: string)
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SourceListMap.prototype.add(sourceListMap: SourceListMap)
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```
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Append some stuff.
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### `SourceListMap.prototype.prepend`
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``` js
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SourceListMap.prototype.prepend(generatedCode: string)
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SourceListMap.prototype.prepend(generatedCode: string, source: string, originalSource: string)
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SourceListMap.prototype.prepend(sourceListMap: SourceListMap)
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```
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Prepend some stuff.
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### `SourceListMap.prototype.toString()`
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Get generated code.
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### `SourceListMap.prototype.toStringWithSourceMap`
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``` js
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SourceListMap.prototype.toStringWithSourceMap(options: object)
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```
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Get generated code and SourceMap. `options` can contains `file` property which defines the `file` property of the SourceMap.
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### `SourceListMap.prototype.mapGeneratedCode`
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``` js
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SourceListMap.prototype.mapGeneratedCode(fn: function) : SourceListMap
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```
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Applies `fn` to each generated code block (per line). The returned value is set as new generated code. Returns a new SourceListMap.
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Removing and adding lines is supported. The SourceMap complexity will increase when doing this.
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## Test
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[](https://travis-ci.org/webpack/source-list-map)
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## License
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Copyright (c) 2017 JS Foundation
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MIT (http://www.opensource.org/licenses/mit-license.php)
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