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Status](https://travis-ci.org/kaelzhang/runtime-environment-webpack-plugin.svg?branch=master)](https://travis-ci.org/kaelzhang/runtime-environment-webpack-plugin)\n[![Coverage](https://codecov.io/gh/kaelzhang/runtime-environment-webpack-plugin/branch/master/graph/badge.svg)](https://codecov.io/gh/kaelzhang/runtime-environment-webpack-plugin)\n\u003c!-- optional appveyor tst\n[![Windows Build Status](https://ci.appveyor.com/api/projects/status/github/kaelzhang/runtime-environment-webpack-plugin?branch=master\u0026svg=true)](https://ci.appveyor.com/project/kaelzhang/runtime-environment-webpack-plugin)\n--\u003e\n\u003c!-- optional npm version\n[![NPM version](https://badge.fury.io/js/runtime-environment-webpack-plugin.svg)](http://badge.fury.io/js/runtime-environment-webpack-plugin)\n--\u003e\n\u003c!-- optional npm downloads\n[![npm module downloads per month](http://img.shields.io/npm/dm/runtime-environment-webpack-plugin.svg)](https://www.npmjs.org/package/runtime-environment-webpack-plugin)\n--\u003e\n\u003c!-- optional dependency status\n[![Dependency Status](https://david-dm.org/kaelzhang/runtime-environment-webpack-plugin.svg)](https://david-dm.org/kaelzhang/runtime-environment-webpack-plugin)\n--\u003e\n\n# runtime-environment-webpack-plugin\n\nThe webpack RuntimeDefinePlugin allows you to create global constants which can be configured at runtime, even after the asset(s) have been emitted to output directory by webpack.\n\n## Install\n\n```sh\n$ npm i runtime-environment-webpack-plugin\n```\n\n## Usage\n\nThis plugin must be used with the babel plugin [babel-plugin-transform-environment-variables-to-getters](https://github.com/kaelzhang/babel-plugin-transform-environment-variables-to-getters)\n\nBe careful, only use this plugin for **BROWSER-SIDE** webpack compilation.\n\n`.babelrc`\n\n```json\n{\n  \"plugins\": [\"transform-environment-variables-to-getters\", {\n    \"envFilepath\": \"/path/to/envs.js\",\n    \"include\": [\"NODE_DEBUG\"]\n  }]\n}\n```\n\n```js\nconst RuntimeEnvironmentPlugin = require('runtime-environment-webpack-plugin')\n\nconst envFilepath = '/path/to/envs.js'\nconst plugin = new RuntimeEnvironmentPlugin({\n  envs: [\n    'NODE_DEBUG',\n    'NODE_ENV'\n  ],\n  envFilepath\n})\n\nwebpackConfig.plugins.push(plugin)\n\n// Run webpack\nwebpack(webpackConfig).run(() =\u003e {\n\n  // And after that we can change the global constants by\n  plugin.set('NODE_DEBUG', '')\n\n  // Reload all variables to the latest of the process.env\n  plugin.reload()\n\n  // Reload a single environment key\n  plugin.reload('NODE_DEBUG')\n\n  // Save changes to files\n  plugin.save().then(() =\u003e {\n    // The content of the chunks has been changed\n  })\n})\n```\n\n### How does it work?\n\n`RuntimeEnvironmentPlugin` will generate and output a commonjs module to the path `options.envFilepath`.\n\nAnd the module exports a function which returns the env object.\n\n```js\n// After webpack has been run\n\nconsole.log(require(envFilepath).NODE_DEBUG)\n// will print `process.env.NODE_DEBUG` at the compiling time of webpack.\n```\n\n`RuntimeEnvironmentPlugin` tracks all chunks that depend on the module `envFilepath` and will change the content of each chunk if we reload or set the environment variables.\n\n## new RuntimeEnvironmentPlugin(options)\n\n- **options** `Object`\n  - **envs** `Object` the same as the first parameter of `new webpack.DefinePlugin`\n  - **envFilepath** `path` the file that environment variables will be save into.\n\n### plugin.reload(): this\n\nReload all bundled code slices which are original from `options.envFilepath` with the current `process.env`\n\n### plugin.reload(key): this\n\nReload one env key\n\n### plugin.set(key): this\n\nSet an env key.\n\n### await plugin.save()\n\nSave the changes to the chunk files.\n\n### getter: plugin.outputs\n\nReturns `Set\u003cstring\u003e` a set of file paths each of which depends on `options.envFilepath`\n\n## License\n\n[MIT](LICENSE)\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fkaelzhang%2Fruntime-environment-webpack-plugin","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fkaelzhang%2Fruntime-environment-webpack-plugin","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fkaelzhang%2Fruntime-environment-webpack-plugin/lists"}