what is webpack-sources fr?

gaearon/webpack-sources — explained in plain English

Analysis updated 2026-07-17 · repo last pushed 2016-12-08

★ 3JavaScriptAudience · developerComplexity · 4/5DormantSetup · moderate

vibe map

mindmap
  root((repo))
    What it does
      Wraps code fragments
      Tracks source maps
      Reports size and hash
    Tech stack
      JavaScript
      Source class design
    Use cases
      Build bundler tools
      Concatenate files
      Preserve debug info
    Audience
      Build tool developers
      Webpack contributors
    Source types
      RawSource
      OriginalSource
      SourceMapSource
      CachedSource

mindmap root((repo)) What it does Wraps code fragments Tracks source maps Reports size and hash Tech stack JavaScript Source class design Use cases Build bundler tools Concatenate files Preserve debug info Audience Build tool developers Webpack contributors Source types RawSource OriginalSource SourceMapSource CachedSource

what do people make with this?

VIBE 1

Combine multiple JavaScript files into one bundle while preserving source map debug info.

VIBE 2

Cache expensive source transformations so a build tool doesn't redo the same work.

VIBE 3

Track whether a piece of code came from an original file or was generated during a build.

VIBE 4

Add prefixes or replace sections of code while keeping accurate line-mapping for errors.

what's the stack?

JavaScript

how it stacks up fr

	gaearon/webpack-sources	amarjitjim/browserpilot	andershaig/cssess
Stars	3	3	3
Language	JavaScript	JavaScript	JavaScript
Last pushed	2016-12-08	—	2011-08-19
Maintenance	Dormant	—	Dormant
Setup difficulty	moderate	moderate	easy
Complexity	4/5	3/5	1/5
Audience	developer	developer	developer

Figures from each repo's GitHub metadata at analysis time.

how do i run it?

Difficulty · moderate time til it works · 30min

Intended for use inside build tool code, not a standalone CLI or app.

prompts (copy fr)

prompt 1

Show me how to use ConcatSource to merge several JavaScript files while keeping their source maps.

prompt 2

Explain how to write a custom Source subclass for a new type of build-time code transformation.

prompt 3

Help me use CachedSource to avoid recomputing a source map on every build.

prompt 4

Walk me through how webpack-sources helps a bundler point runtime errors back to original files.

Frequently asked questions