{"id":18437222,"url":"https://github.com/power-assert-js/babel-plugin-empower-assert","last_synced_at":"2025-04-07T20:34:04.357Z","repository":{"id":48030997,"uuid":"56041217","full_name":"power-assert-js/babel-plugin-empower-assert","owner":"power-assert-js","description":"Babel plugin to convert assert to power-assert at compile 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Status][travis-image]][travis-url]\n[![NPM version][npm-image]][npm-url]\n[![License][license-image]][license-url]\n\n\n`babel-plugin-empower-assert` is a [Babel](https://babeljs.io/) plugin to convert [assert](https://nodejs.org/api/assert.html) to [power-assert](https://github.com/power-assert-js/power-assert) at compile time.\n\n\nINSTALL\n---------------------------------------\n\n```\n$ npm install --save-dev babel-plugin-empower-assert power-assert\n```\n\n\nCAUTION\n---------------------------------------\n\nBabel7 is incompatible with Babel6.\n\nFor Babel6, you need to use [the 1.x release of babel-plugin-empower-assert](https://github.com/power-assert-js/babel-plugin-empower-assert/tree/v1.4.0).\n\n```\n$ npm install --save-dev babel-plugin-empower-assert@1.4.0\n```\n\n\nHOW TO USE\n---------------------------------------\n\n\n### via [.babelrc](http://babeljs.io/docs/usage/babelrc/) (Recommended)\n\n```javascript\n{\n  \"presets\": [\n    ...\n  ],\n  \"env\": {\n    \"development\": {\n      \"plugins\": [\n        \"babel-plugin-empower-assert\"\n      ],\n    }\n  }\n}\n```\n\n```\n$ babel /path/to/src/target.js \u003e /path/to/build/target.js\n```\n\n\n### via [Babel CLI](http://babeljs.io/docs/usage/cli/)\n\n```\n$ babel --plugins babel-plugin-empower-assert /path/to/src/target.js \u003e /path/to/build/target.js\n```\n\nor shortly,\n\n```\n$ babel --plugins empower-assert /path/to/src/target.js \u003e /path/to/build/target.js\n```\n\n\n### via [Babel API](http://babeljs.io/docs/usage/api/)\n\n```javascript\nvar babel = require('@babel/core');\nvar jsCode = fs.readFileSync('/path/to/src/target.js');\nvar transformed = babel.transform(jsCode, {\n    presets: [...],\n    plugins: ['babel-plugin-empower-assert']\n});\nconsole.log(transformed.code);\n```\n\n\nEXAMPLE\n---------------------------------------\n\nFor given `math.js` below,\n\n```javascript\n'use strict';\n\nvar assert = require('assert');\n\nfunction add (a, b) {\n    assert(!isNaN(a));\n    assert.equal(typeof b, 'number');\n    assert.ok(!isNaN(b));\n    return a + b;\n}\n```\n\nRun `babel` with `--plugins empower-assert` to transform code.\n\n```\n$ babel --plugins empower-assert /path/to/demo/math.js \u003e /path/to/build/math.js\n```\n\nYou will see `assert` is converted to `power-assert`.\n\n```javascript\n'use strict';\n\nvar assert = require('power-assert');\n\nfunction add(a, b) {\n    assert(!isNaN(a));\n    assert.equal(typeof b, 'number');\n    assert.ok(!isNaN(b));\n    return a + b;\n}\n```\n\n\nAUTHOR\n---------------------------------------\n* [Takuto Wada](https://github.com/twada)\n\n\nLICENSE\n---------------------------------------\nLicensed under the [MIT](https://github.com/power-assert-js/babel-plugin-empower-assert/blob/master/LICENSE) license.\n\n\n[power-assert-url]: https://github.com/power-assert-js/power-assert\n[power-assert-banner]: https://raw.githubusercontent.com/power-assert-js/power-assert-js-logo/master/banner/banner-official-fullcolor.png\n\n[travis-url]: https://travis-ci.org/power-assert-js/babel-plugin-empower-assert\n[travis-image]: https://secure.travis-ci.org/power-assert-js/babel-plugin-empower-assert.svg?branch=master\n\n[npm-url]: https://npmjs.org/package/babel-plugin-empower-assert\n[npm-image]: https://badge.fury.io/js/babel-plugin-empower-assert.svg\n\n[license-url]: https://github.com/power-assert-js/babel-plugin-empower-assert/blob/master/LICENSE\n[license-image]: https://img.shields.io/badge/license-MIT-brightgreen.svg\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpower-assert-js%2Fbabel-plugin-empower-assert","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fpower-assert-js%2Fbabel-plugin-empower-assert","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpower-assert-js%2Fbabel-plugin-empower-assert/lists"}