{"id":18437227,"url":"https://github.com/power-assert-js/espower-loader","last_synced_at":"2025-12-12T04:02:28.615Z","repository":{"id":12350444,"uuid":"14995474","full_name":"power-assert-js/espower-loader","owner":"power-assert-js","description":"Power Assert feature instrumentor on the fly","archived":false,"fork":false,"pushed_at":"2017-04-24T08:24:53.000Z","size":73,"stargazers_count":28,"open_issues_count":0,"forks_count":4,"subscribers_count":11,"default_branch":"master","last_synced_at":"2024-04-23T14:42:16.978Z","etag":null,"topics":["power-assert"],"latest_commit_sha":null,"homepage":null,"language":"JavaScript","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/power-assert-js.png","metadata":{"files":{"readme":"README.md","changelog":"CHANGELOG.md","contributing":null,"funding":null,"license":"MIT-LICENSE.txt","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2013-12-06T22:49:45.000Z","updated_at":"2022-03-25T00:53:13.000Z","dependencies_parsed_at":"2022-09-11T06:51:35.250Z","dependency_job_id":null,"html_url":"https://github.com/power-assert-js/espower-loader","commit_stats":null,"previous_names":["twada/espower-loader"],"tags_count":21,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/power-assert-js%2Fespower-loader","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/power-assert-js%2Fespower-loader/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/power-assert-js%2Fespower-loader/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/power-assert-js%2Fespower-loader/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/power-assert-js","download_url":"https://codeload.github.com/power-assert-js/espower-loader/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":247725957,"owners_count":20985801,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["power-assert"],"created_at":"2024-11-06T06:14:10.509Z","updated_at":"2025-12-12T04:02:28.182Z","avatar_url":"https://github.com/power-assert-js.png","language":"JavaScript","funding_links":[],"categories":[],"sub_categories":[],"readme":"espower-loader\n================================\n\n[![Build Status][travis-image]][travis-url]\n[![NPM package][npm-image]][npm-url]\n[![Dependency Status][depstat-image]][depstat-url]\n\nPower Assert feature instrumentor on the fly.\n\n\nDESCRIPTION\n---------------------------------------\n`espower-loader` is a Node.js module loader that enhances target sources on the fly. So you can instrument Power Assert feature without code generation for now.\n\n`espower-loader` applies [espower](https://github.com/power-assert-js/espower) to target sources on loading them. `espower` manipulates assertion expression (JavaScript Code) in the form of ECMAScript AST defined in [The ESTree Spec](https://github.com/estree/estree) (formerly known as [Mozilla SpiderMonkey Parser API](https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API)), to instrument power-assert feature into the code. `espower-loader` also adjusts line and column number in stack traces by using [source-map-support](https://github.com/evanw/node-source-map-support) module.\n\nPull-requests, issue reports and patches are always welcomed. See [power-assert](https://github.com/power-assert-js/power-assert) project for more documentation.\n\n\nFYI: You may be interested in [intelli-espower-loader](https://github.com/power-assert-js/intelli-espower-loader) to go one step further. With [intelli-espower-loader](https://github.com/power-assert-js/intelli-espower-loader), you don't need to create loader file (like `enable-power-assert.js`). Just define test directory in `package.json` wow!\n\n\nEXAMPLE\n---------------------------------------\n\nYou can instrument `power-assert` without code generation (e.g. without using `grunt-espower`,`gulp-espower`, and so on).\n\nFor mocha, Just add `--require` option.\n\n    $ mocha --require ./path/to/enable-power-assert test/some_test_using_powerassert.js\n\nwhere `enable-power-assert.js` somewhere in your project is,\n\n```javascript\nrequire('espower-loader')({\n    pattern: '{src,test}/**/*.js'\n});\n```\n\nYou can specify options for `espower` module explicitly.\n\n```javascript\nrequire('espower-loader')({\n\n    // directory where match starts with\n    cwd: process.cwd(),\n\n    // glob pattern using minimatch module\n    pattern: '{src,test}/**/*.js',\n\n    // options for espower module\n    espowerOptions: {\n        patterns: [\n            'assert(value, [message])',\n            'assert.ok(value, [message])',\n            'assert.equal(actual, expected, [message])',\n            'assert.notEqual(actual, expected, [message])',\n            'assert.strictEqual(actual, expected, [message])',\n            'assert.notStrictEqual(actual, expected, [message])',\n            'assert.deepEqual(actual, expected, [message])',\n            'assert.notDeepEqual(actual, expected, [message])',\n            'assert.deepStrictEqual(actual, expected, [message])',\n            'assert.notDeepStrictEqual(actual, expected, [message])'\n        ]\n    }\n});\n```\n\n\nOUR SUPPORT POLICY\n---------------------------------------\n\nWe support Node under maintenance. In other words, we stop supporting old Node version when [their maintenance ends](https://github.com/nodejs/LTS).\n\nThis means that any other environment is not supported.\n\nNOTE: If espower-source works in any of the unsupported environments, it is purely coincidental and has no bearing on future compatibility. Use at your own risk.\n\n\nCHANGELOG\n---------------------------------------\nSee [CHANGELOG](https://github.com/power-assert-js/espower-loader/blob/master/CHANGELOG.md)\n\n\nAUTHOR\n---------------------------------------\n* [Takuto Wada](https://github.com/twada)\n\n\nCONTRIBUTORS\n---------------------------------------\n* [Eward Song (shepherdwind)](https://github.com/shepherdwind)\n* [Haoliang Gao (popomore)](https://github.com/popomore)\n\n\nLICENSE\n---------------------------------------\nLicensed under the [MIT](https://github.com/power-assert-js/espower-loader/blob/master/MIT-LICENSE.txt) license.\n\n\n[npm-url]: https://npmjs.org/package/espower-loader\n[npm-image]: https://badge.fury.io/js/espower-loader.svg\n\n[travis-url]: https://travis-ci.org/power-assert-js/espower-loader\n[travis-image]: https://secure.travis-ci.org/power-assert-js/espower-loader.svg?branch=master\n\n[depstat-url]: https://gemnasium.com/power-assert-js/espower-loader\n[depstat-image]: https://gemnasium.com/power-assert-js/espower-loader.svg\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpower-assert-js%2Fespower-loader","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fpower-assert-js%2Fespower-loader","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpower-assert-js%2Fespower-loader/lists"}