https://github.com/Janiczek/elm-sourcemap

A builder for Source Maps (revision 3)
https://github.com/Janiczek/elm-sourcemap

Last synced: about 1 month ago
JSON representation

A builder for Source Maps (revision 3)

• Host: GitHub
• URL: https://github.com/Janiczek/elm-sourcemap
• Owner: Janiczek
• License: apache-2.0
• Created: 2022-07-06T22:32:19.000Z (almost 2 years ago)
• Default Branch: main
• Last Pushed: 2022-11-19T18:32:56.000Z (over 1 year ago)
• Last Synced: 2024-02-13T10:05:27.322Z (5 months ago)
• Language: Elm
• Size: 42 KB
• Stars: 2
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Lists

• awesome-elm-pltd - Janiczek/elm-sourcemap - A library for generating source maps (for use in browser step debuggers, handy for languages compiling to JavaScript). (Packages / Code Generation)

README

        
# elm-sourcemap

A builder for Source Maps (revision 3).

* [Spec](https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit)

* [`mozilla/source-map`](https://github.com/mozilla/source-map): reference JS implementation

* [Visualizer](http://sokra.github.io/source-map-visualization/)

Source Map is a collection of mappings from a generated (often minified) file to 

the original source code (across multiple files if needed).

## Usage

```elm

import SourceMap

SourceMap.empty

  |> SourceMap.withFile "elm.min.js"

  |> SourceMap.addMapping

      { generatedLine = 3

      , generatedColumn = 10

      , source = "Main.elm"

      , originalLine = 10

      , originalColumn = 1

      , name = Just "init"

      }

  |> SourceMap.toString

{-->

{

  "version": 3,

  "sources": [

    "Main.elm"

  ],

  "names": [

    "init"

  ],

  "mappings": ";;SASAA",

  "file": "elm.min.js"

}

-}

```