babel-plugin-transform-strict-mode

This plugin places a 'use strict'; directive at the top of all files to enable strict mode

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babel-plugin-transform-strict-mode
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babel-plugin-transform-strict-mode
This plugin places a "use strict"; directive at the top of all files to enable strict mode.

This plugin may be enabled via babel-plugin-transform-es2015-modules-commonjs. If you wish to disable it you can either turn strict off or pass strictMode: false as an option to the commonjs transform.

Example

In
foo();

Out
"use strict";

foo();

Installation

npm install --save-dev babel-plugin-transform-strict-mode

Usage

Via .babelrc (Recommended)

.babelrc
Without options:
{
  "plugins": ["transform-strict-mode"]
}

With options:
{
  "plugins": [
    ["transform-strict-mode", {
      "strict": true
    }]
  ]
}

Via CLI

babel --plugins transform-strict-mode script.js

Via Node API

require("babel-core").transform("code", {
  plugins: ["transform-strict-mode"]
});