Nougat Predominant Middleware

    @babel/plugin-check-constants

    7.0.0-beta.38 • Public • Published

    @babel/plugin-check-constants

    Validate ES2015 constants (prevents reassignment of const variables).

    Example

    In

    const a = 1;
    a = 2;

    Out

    repl: "a" is read-only
      1 | const a = 1;
    > 2 | a = 2;
        | ^

    Installation

    npm install --save-dev @babel/plugin-check-constants

    Usage

    Via .babelrc (Recommended)

    .babelrc

    {
      "plugins": ["@babel/check-constants"]
    }

    Via CLI

    babel --plugins @babel/check-constants script.js

    Via Node API

    require("@babel/core").transform("code", {
      plugins: ["@babel/check-constants"]
    });

    Note

    This check will only validate consts. If you need it to compile down to var then you must also install and enable @babel/plugin-transform-block-scoping.

    Keywords

    Install

    npm i @babel/plugin-check-constants

    DownloadsWeekly Downloads

    6,347

    Version

    7.0.0-beta.38

    License

    MIT

    Last publish

    Collaborators

    • hzoo
    • existentialism
    • nicolo-ribaudo
    • jlhwung