babel-plugin-transform-define-file

1.3.2 • Public • Published

babel-plugin-transform-define

npm version

Compile time code replacement for babel similar to Webpack's DefinePlugin


Quick Start

npm install babel-plugin-transform-define

.babelrc

{
  "plugins": [
    ["transform-define", {
      "process.env.NODE_ENV": "production",
      "typeof window": "object"
    }]
  ]
}

.babelrc

{
  "plugins": [
    ["transform-define", "./path/to/config/file.js"]
  ]
}

Note: Paths are relative to `process.cwd()``

Reference Documentation

babel-plugin-transform-define can transform certain types of code as a babel transformation.

Identifiers

.babelrc

{
  "plugins": [
    ["transform-define", {
      "VERSION": "1.0.0",
    }]
  ]
}

Source Code

VERSION;
 
window.__MY_COMPANY__ = {
  version: VERSION
};

Output Code

"1.0.0";
 
window.__MY_COMPANY__ = {
  version: "1.0.0"
};

Member Expressions

.babelrc

{
  "plugins": [
    ["transform-define", {
      "process.env.NODE_ENV": "production"
    }]
  ]
}

Source Code

if (process.env.NODE_ENV === "production") {
  console.log(true);
}

Output Code

if (true) {
  console.log(true);
}

Unary Expressions

.babelrc

{
  "plugins": [
    ["transform-define", {
      "typeof window": "object"
    }]
  ]
}

Source Code

typeof window;
typeof window === "object";

Output Code

'object';
true;

License

MIT License

Package Sidebar

Install

npm i babel-plugin-transform-define-file

Weekly Downloads

1

Version

1.3.2

License

MIT

Unpacked Size

104 kB

Total Files

32

Last publish

Collaborators

  • xcarpentier