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re-add comments to generated files from their source files via sourcemap


Re-add comments to generated files from their CoffeeScript source files via sourcemap.

reAddComments takes a sourcemap (.map) file, looks at the generated JavaScript file and the CoffeeScript source file(s) it's associated with, and adds comments from the sources to the generated file.

If multiple .map are passed in one invocation, reAddComments will process each one individually. Common usage may be reAddComments lib/*.map.

reAddComments is only as accurate as the sourcemaps it's given, so it occassionally misplaces comments. If you are using it to migrate a code base away from CoffeeScript, you should manually review the altered files.

reAddComments exports a single function,

The mapdict parameter should be a json object equivalent to a .map file between the generatedCode and the sourceCode. The actual filenames/sourceRoot defined in the mapdict is ignored, as the map is assumed to be between the generatedCode and sourceCode arguments.

(Nothing yet)

Jared Pochtar

Copyright 2013 Palantir Technologies

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.