inline-source-map-comment

Create an inline source map comment from a source map object or string

var inlineSourceMapComment = require('inline-source-map-comment');

var fixture = {
  version:3,
  file: 'output.js.map',
  sources: ['input.js'],
  names: [],
  mappings: 'AAAA'
};

inlineSourceMapComment(fixture);
//=> "//# sourceMappingURL=data:application/json;base64,eyJ2ZXJza ..."

Installation

Package managers

npm

npm install inline-source-map-comment

bower

bower install inline-source-map-comment

Duo

var inlineSourceMapComment = require('shinnn/inline-source-map-comment');

Standalone

Download the script file directly.

API

inlineSourceMapComment(sourceMap [, options])

sourceMap: String or Object
options: Object
Return: String

It returns a line comment of base64-encoded source map.

Argument can be an object of source map or a JSON string.

var map = '{"version":3,"file":"a.js.map","sources":["b.js"],"names":[],"mappings":"AAAA"}';

inlineSourceMapComment(map);
//# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uI ... "

inlineSourceMapComment(JSON.parse(map));
//=> (Same as `inlineSourceMapComment.js(map)`)

It automatically removes sourcesContent property from result. Use sourcesContent option if you want to preserve sourcesContent property.

var map = '{"version":3,"file":"foo.js.map","sources":["bar.js"], ...';
var one = inlineSourceMapComment(map);

map.sourcesContent = 'foo';
var another inlineSourceMapComment(map);

one === another; //=> true

options.block

Type: Boolean
Default: false

Returns a block comment instead of a line comment. It can be used for creating CSS source maps.

var map = '{"version":3,"file":"foo.css.map","sources":["bar.js"], ...';

inlineSourceMapComment(map, {block: true});
//=> "/* sourceMappingURL=data:application/json;base64,eyJ2ZXJ ... */"

options.sourcesContent

Type: Boolean
Default: false

Preserves sourcesConteThe prefix string of basent property.

inlineSourceMapComment.prefix

Type: String

A common part of a Base64-encoded source map comment.

inlineSourceMapComment.prefix;
//=> "# sourceMappingURL=data:application/json;base64,"

CLI

You can use this module as a CLI tool by installing it globally.

npm install -g inline-source-map-comment

Usage

Usage1: inline-source-map-comment <source map string>
Usage2: inline-source-map-comment --in <source map file>
Usage3: cat <source map file> | inline-source-map-comment

Options:
--block, --css,    -b, -c  Print a block comment instead of line comment
--sources-content, -s      Preserve sourcesContent property
--in, --input,     -i      Use a JSON file as a source
--help,            -h      Print usage information
--version,         -v      Print version

License

Copyright (c) 2014 - 2015 Shinnosuke Watanabe

Licensed under the MIT License.