What does mozilla/source-map do?

This project is a source map implementation library used for generating, parsing, and consuming source maps. It provides the functional components necessary to link transformed or minified code back to original source files, acting as a tool for code transformation debugging.

What are the main features of mozilla/source-map?

The main features of mozilla/source-map are: Minified Code Debugging, Source-to-Generated Code Mappings, Coordinate Translation Utilities, Transformation Chaining, Source Map Resolution, Source Map Generators, Map Merging, Source Map Composers.

What are some open-source alternatives to mozilla/source-map?

Open-source alternatives to mozilla/source-map include: rich-harris/magic-string — magic-string is a low-level JavaScript library designed for compilers and bundlers to perform source code… terser/terser — Terser is a JavaScript minifier and compressor designed to reduce file size through whitespace removal, symbol… browserify/browserify-handbook — The browserify-handbook is a comprehensive documentation guide for Browserify, a CommonJS module bundler and… mishoo/uglifyjs — UglifyJS is a tool for JavaScript code minification, AST manipulation, and source beautification. Its primary purpose… web-infra-dev/rspack — Rspack is a high-performance web bundler written in Rust that packages JavaScript and TypeScript for web applications.… istanbuljs/nyc — nyc is a JavaScript code coverage tool and command-line interface that instruments source files to track the execution…

Source Map - generate and parse source maps

Features

Minified Code Debugging - Translates runtime errors in minified or transformed code back to the original source files for troubleshooting.
Source-to-Generated Code Mappings - Translates positions in generated source back to the original file, line, column, and identifier name.
Coordinate Translation Utilities - Translates runtime error positions in generated code back to the original source file, line, and column.
Transformation Chaining - Implements the capability to rewrite mappings by applying existing source maps to resolve multi-step transformations.
Source Map Resolution - Provides a mechanism for chaining and merging multiple source maps to resolve multi-step code transformations.
Source Map Generators - Creates source maps by incrementally adding mappings between original source positions and generated output positions.
Map Merging - Provides mechanisms to merge multiple source maps to resolve combined code transformations.
Source Map Composers - Provides a tool for building trees of code snippets that automatically generate final output strings and associated source maps.
Source Map Implementation Libraries - Implements a full library for generating, parsing, and consuming source maps to link transformed code to original files.
Mapped String Concatenations - Tracks offsets during code concatenation to preserve source map metadata while producing the final output string.
Composite Source Node Trees - Builds a hierarchy of code fragments and metadata to automatically compute final positions and mappings.
Multi-Step Map Merging - Chains and merges multiple source maps to track code changes across several build stages or compilers.
VLQ Encodings - Uses Variable-Length Quantity encoding to compress coordinate data for efficient storage and transmission.
Source Map Chaining - Provides mechanisms to chain multiple mapping layers, treating one map's output as another's input.
Source Mapping Iterators - Traverses the internal coordinate list sequentially to translate every generated position back to its original source.
Original-to-Generated Mapping - Translates a specific line and column from an original source file to its corresponding position in the generated output.
Snippet Tracking - Provides utilities to automatically track source mappings while concatenating and interpolating generated code snippets.
Source Map Extractions - Extracts raw content of original source files directly from the parsed source map data.
Source Map Decoders - Decodes encoded mapping strings within a source map to determine relationships between generated and original positions.
Node Tree Composition - Offers a composer for building trees of code snippets that automatically generate output strings and associated source maps.
Source Mapping Iterators - Traverses every mapping between original and generated source positions using a specified sort order for analysis.

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Source Map - generate and parse source maps | Awesome Repos

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Frequently asked questions

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