https://github.com/loganfsmyth/babel-plugin-transform-builtin-extend

A plugin for Babel 6 supports extending from builtin types based on static analysis.
https://github.com/loganfsmyth/babel-plugin-transform-builtin-extend

Last synced: 3 months ago
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A plugin for Babel 6 supports extending from builtin types based on static analysis.

• Host: GitHub
• URL: https://github.com/loganfsmyth/babel-plugin-transform-builtin-extend
• Owner: loganfsmyth
• License: mit
• Created: 2015-12-11T08:04:10.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2022-01-18T09:08:04.000Z (almost 3 years ago)
• Last Synced: 2024-07-16T15:41:40.551Z (4 months ago)
• Language: JavaScript
• Size: 5.86 KB
• Stars: 148
• Watchers: 4
• Forks: 19
• Open Issues: 13
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-babel - transform-builtin-extend - Enable extending builtin types like `Error` and `Array`, which require special treatment and require static analysis to detect. (Plugins / General Plugins)

README

        

# Babel Builtin Constructor extension plugin

This is a Babel 6 plugin to enable extending builtin types like "Error" and "Array" and such,

which require special treatment and require static analysis to detect.

## Usage

In your Babel 6 configuration, for example in a `.babelrc` you might have

```

{

    "plugins": [

        ["babel-plugin-transform-builtin-extend", {

            globals: ["Error", "Array"]

        }]

    ]

}

```

which would enable the plugin and configure it to look for any class extending `Error` or `Array` globals.

## IE<=10

On older browsers that do not support reassigning the prototype of an existing object, you will need to

enable the `approximate` mode, which will fall back to the Babel 5 behavior of using simple ES5 inheritance

to approximate extending a class, though your results may vary depending on your goals.

```

{

    "plugins": [

        ["babel-plugin-transform-builtin-extend", {

            globals: ["Error", "Array"],

            approximate: true

        }]

    ]

}

```

## Limitations

This plugin will only reles on assigning `__proto__` for static property inheritance from parent constructors.

If you are relying on this, it will not work on IE<=10 and any other browsers that don't support `__proto__`.