A babel plugin replace define Identifier / StringLiteral to pkg.version!

npm i --save-dev babel-plugin-version

Add it into .babelrc.

{
  "plugins": [
    "version"
  ]
}

• Input

const a = { a: __VERSION__ };

const b = a === __VERSION__;

const c = [__VERSION__];

const d =__VERSION__ = 1;

const e = "__VERSION__";

• Output

const a = { a: "0.1.0" };

const b = a === "0.1.0";

const c = ["0.1.0"];

const d = __VERSION__ = 1;

const e = "0.1.0";

You can customize the default __VERSION__ define.

{
  "plugins": [
    ["version", {
      "define": "__PKG_VERSION__",
      "identifier": false,
      "stringLiteral": true 
     }]
  ]
}

• define, string. Default __VERSION__. Define the keyword string which will be transformed.
• identifier, boolean. Default true. Whether transform identifier which's name is equal define string.
• stringLiteral, boolean. Default true. Whether transform string variable which is equal define string.

npm i

npm t

Then see the files in lib dir.

MIT