# multi-stage-sourcemap
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multi-level source map
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## Installation
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``` sh
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npm install multi-stage-sourcemap
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```
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## Concept
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Example Process
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```
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A.js -> B.js -> C.js
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B.js.map -> C.js.map
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```
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`multi-stage-sourcemap` can mapping `C.js` to `A.js`
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```
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C.js -> ... -> A.js
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```
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Code:
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``` js
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var transfer = require("multi-stage-sourcemap").transfer;
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var cToAMap = transfer({fromSourceMap: cMap, toSourceMap: bMap})
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```
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## Usage
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### `transfer`
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Return the re-mapped `rawSourceMap` string.
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The only argument is an object with the following properties:
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- `fromSourceMap` : String - rawSourceMap
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- `toSourceMap` : String - rawSourceMap
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`rawSourceMap` is like below object.
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``` js
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var rawSourceMap = {
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version: 3,
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file: 'min.js',
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names: ['bar', 'baz', 'n'],
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sources: ['one.js', 'two.js'],
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sourceRoot: 'http://example.com/www/js/',
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mappings: 'CAAC,IAAI,IAAM,SAAUA,GAClB,OAAOC,IAAID;CCDb,IAAI,IAAM,SAAUE,GAClB,OAAOA'
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};
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```
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* [mozilla/source-map](https://github.com/mozilla/source-map/#sourcemapconsumer "mozilla/source-map")
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## Contributing
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1. Fork it!
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2. Create your feature branch: `git checkout -b my-new-feature`
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3. Commit your changes: `git commit -am 'Add some feature'`
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4. Push to the branch: `git push origin my-new-feature`
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5. Submit a pull request :D
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## License
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MIT
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