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Tim van der Lippe
e4974ddc4c
json.dump appears to add extraneous spaces before newline characters. By specifying the separators option, we can remove these whitespaces, reducing the diff noise. Solution taken from https://stackoverflow.com/questions/16311562/python-json-without-whitespaces DISABLE_THIRD_PARTY_CHECK=Fix whitespace in node_modules Change-Id: I26556e5053f19a9021ad41779319bdfe3f8c2b6c Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2013154 Commit-Queue: Tim van der Lippe <tvanderlippe@chromium.org> Commit-Queue: Mathias Bynens <mathias@chromium.org> Auto-Submit: Tim van der Lippe <tvanderlippe@chromium.org> Reviewed-by: Mathias Bynens <mathias@chromium.org>
combine-source-map 
Add source maps of multiple files, offset them and then combine them into one source map.
var convert = require('convert-source-map');
var combine = require('combine-source-map');
var fooComment = '//# sourceMappingURL=data:application/json;base64,eyJ2Z [..] pzJylcbiJdfQ==';
var barComment = '//# sourceMappingURL=data:application/json;base64,eyJ2Z [..] VjaycpXG4iXX0=';
var fooFile = {
source: '(function() {\n\n console.log(require(\'./bar.js\'));\n\n}).call(this);\n' + '\n' + fooComment
, sourceFile: 'foo.js'
};
var barFile = {
source: '(function() {\n\n console.log(alert(\'alerts suck\'));\n\n}).call(this);\n' + '\n' + barComment
, sourceFile: 'bar.js'
};
var offset = { line: 2 };
var base64 = combine
.create('bundle.js')
.addFile(fooFile, offset)
.addFile(barFile, { line: offset.line + 8 })
.base64();
var sm = convert.fromBase64(base64).toObject();
console.log(sm);
{ version: 3,
file: 'bundle.js',
sources: [ 'foo.coffee', 'bar.coffee' ],
names: [],
mappings: ';;;AAAA;CAAA;CAAA,CAAA,CAAA,IAAO,GAAK;CAAZ;;;;;ACAA;CAAA;CAAA,CAAA,CAAA,IAAO,GAAK;CAAZ',
sourcesContent:
[ 'console.log(require \'./bar.js\')\n',
'console.log(alert \'alerts suck\')\n' ] }
Installation
npm install combine-source-map
API
create()
/**
* @name create
* @function
* @param file {String} optional name of the generated file
* @param sourceRoot { String} optional sourceRoot of the map to be generated
* @return {Object} Combiner instance to which source maps can be added and later combined
*/
Combiner.prototype.addFile(opts, offset)
/**
* Adds map to underlying source map.
* If source contains a source map comment that has the source of the original file inlined it will offset these
* mappings and include them.
* If no source map comment is found or it has no source inlined, mappings for the file will be generated and included
*
* @name addMap
* @function
* @param opts {Object} { sourceFile: {String}, source: {String} }
* @param offset {Object} { line: {Number}, column: {Number} }
*/
Combiner.prototype.base64()
/**
* @name base64
* @function
* @return {String} base64 encoded combined source map
*/
Combiner.prototype.comment()
/**
* @name comment
* @function
* @return {String} base64 encoded sourceMappingUrl comment of the combined source map
*/
removeComments(src)
/**
* @name removeComments
* @function
* @param src
* @return {String} src with all sourceMappingUrl comments removed
*/
Example
Read and run the more elaborate example in order to get a better idea how things work.