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This repository was archived by the owner on Apr 6, 2018. It is now read-only.

Generate source-maps from index mappings.

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twolfson/source-map-index-generator

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Generatesource-maps from index mappings.

Getting Started

Install the module with:npm install source-map-index-generator

// Load in SourceMapIndexGeneratorvarSourceMapIndexGenerator=require('source-map-index-generator');// Data output by node-jsmin2varinput=['// First line comment','var test = {','  a: "b"','};'].join('\n'),output='var test={a:"b"};',srcFile='input.js',coordmap={"22":0,"23":1,"24":2,"25":3,"26":4,"27":5,"28":6,"29":7,"31":8,"33":9,"37":10,"38":11,"40":12,"41":13,"42":14,"44":15,"45":16};// Generate source map via SourceMapIndexGeneratorvargenerator=newSourceMapIndexGenerator(generatorProps);// Add the index coordinate mappinggenerator.addIndexMapping({src:srcFile,input:input,output:output,map:coordmap});// Collect our source-mapgenerator.toString();// {"version":3,"file":"min.js","sources":["input.js"],"names":[],"mappings":"AACA,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAE,CAAE,CACT,CAAC,CAAE,CAAC,CAAC,CACP,CAAC"}

Documentation

This module returns a constructor forSourceMapIndexGenerator.

new SourceMapIndexGenerator(startOfSourceMap)

To create a new one, you must pass an object with the following properties:

  • file: The filename of the generated source that this source map isassociated with.

  • sourceRoot: An optional root for all relative URLs in this source map.

SourceMapIndexGenerator.prototype.addIndexMapping(mapping)

Add code with an index based mapping to the file collection.

The mapping objectshould have the following properties:

  • src: Filepath to original src.

  • input: Unminified JavaScript.

  • output: Minified JavaScript.

  • map: Map of character index to character index (number -> number)

  • lineOffset: An optional line offset to add to mappings.

Contributing

In lieu of a formal styleguide, take care to maintain the existing coding style. Add unit tests for any new or changed functionality. Lint and test your code usinggrunt.

License

Copyright (c) 2013 Todd WolfsonLicensed under the MIT license.

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