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