{"id":23196315,"url":"https://github.com/stdlib-js/assert-deep-has-property","last_synced_at":"2025-08-18T22:31:46.444Z","repository":{"id":41421198,"uuid":"377249263","full_name":"stdlib-js/assert-deep-has-property","owner":"stdlib-js","description":"Test whether an object contains a nested key path, either own or inherited.","archived":false,"fork":false,"pushed_at":"2024-04-12T02:35:48.000Z","size":1969,"stargazers_count":3,"open_issues_count":0,"forks_count":0,"subscribers_count":3,"default_branch":"main","last_synced_at":"2024-05-01T11:59:04.717Z","etag":null,"topics":["assert","assertion","deephas","deephasown","deephasownproperty","deephasproperty","javascript","node","node-js","nodejs","obj","object","prop","property","stdlib","test","util","utilities","utility","utils"],"latest_commit_sha":null,"homepage":"https://github.com/stdlib-js/stdlib","language":"JavaScript","has_issues":false,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"apache-2.0","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/stdlib-js.png","metadata":{"files":{"readme":"README.md","changelog":"CHANGELOG.md","contributing":"CONTRIBUTING.md","funding":null,"license":"LICENSE","code_of_conduct":"CODE_OF_CONDUCT.md","threat_model":null,"audit":null,"citation":"CITATION.cff","codeowners":null,"security":"SECURITY.md","support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null},"funding":{"github":["stdlib-js"],"open_collective":"stdlib","tidelift":"npm/@stdlib/stdlib"}},"created_at":"2021-06-15T17:50:24.000Z","updated_at":"2024-07-27T15:28:36.774Z","dependencies_parsed_at":"2023-02-17T07:01:05.002Z","dependency_job_id":"7fa9c519-7afd-411b-8c2e-8666dc4b5016","html_url":"https://github.com/stdlib-js/assert-deep-has-property","commit_stats":{"total_commits":52,"total_committers":1,"mean_commits":52.0,"dds":0.0,"last_synced_commit":"e2cb080ceb9e9bc77837786f81e8b10edd0579c2"},"previous_names":[],"tags_count":26,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/stdlib-js%2Fassert-deep-has-property","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/stdlib-js%2Fassert-deep-has-property/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/stdlib-js%2Fassert-deep-has-property/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/stdlib-js%2Fassert-deep-has-property/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/stdlib-js","download_url":"https://codeload.github.com/stdlib-js/assert-deep-has-property/tar.gz/refs/heads/main","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":230284071,"owners_count":18202330,"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":["assert","assertion","deephas","deephasown","deephasownproperty","deephasproperty","javascript","node","node-js","nodejs","obj","object","prop","property","stdlib","test","util","utilities","utility","utils"],"created_at":"2024-12-18T14:17:43.276Z","updated_at":"2025-08-18T22:31:46.408Z","avatar_url":"https://github.com/stdlib-js.png","language":"JavaScript","funding_links":["https://github.com/sponsors/stdlib-js","https://opencollective.com/stdlib","https://tidelift.com/funding/github/npm/@stdlib/stdlib"],"categories":[],"sub_categories":[],"readme":"\u003c!--\n\n@license Apache-2.0\n\nCopyright (c) 2018 The Stdlib Authors.\n\nLicensed under the Apache License, Version 2.0 (the \"License\");\nyou may not use this file except in compliance with the License.\nYou may obtain a copy of the License at\n\n   http://www.apache.org/licenses/LICENSE-2.0\n\nUnless required by applicable law or agreed to in writing, software\ndistributed under the License is distributed on an \"AS IS\" BASIS,\nWITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\nSee the License for the specific language governing permissions and\nlimitations under the License.\n\n--\u003e\n\n\n\u003cdetails\u003e\n  \u003csummary\u003e\n    About stdlib...\n  \u003c/summary\u003e\n  \u003cp\u003eWe believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.\u003c/p\u003e\n  \u003cp\u003eThe library is fully decomposable, being architected in such a way that you can swap out and mix and match APIs and functionality to cater to your exact preferences and use cases.\u003c/p\u003e\n  \u003cp\u003eWhen you use stdlib, you can be absolutely certain that you are using the most thorough, rigorous, well-written, studied, documented, tested, measured, and high-quality code out there.\u003c/p\u003e\n  \u003cp\u003eTo join us in bringing numerical computing to the web, get started by checking us out on \u003ca href=\"https://github.com/stdlib-js/stdlib\"\u003eGitHub\u003c/a\u003e, and please consider \u003ca href=\"https://opencollective.com/stdlib\"\u003efinancially supporting stdlib\u003c/a\u003e. We greatly appreciate your continued support!\u003c/p\u003e\n\u003c/details\u003e\n\n# deepHasProp\n\n[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] \u003c!-- [![dependencies][dependencies-image]][dependencies-url] --\u003e\n\n\u003e Test whether an object contains a nested key path, either own or inherited.\n\n\u003csection class=\"installation\"\u003e\n\n## Installation\n\n```bash\nnpm install @stdlib/assert-deep-has-property\n```\n\nAlternatively,\n\n-   To load the package in a website via a `script` tag without installation and bundlers, use the [ES Module][es-module] available on the [`esm`][esm-url] branch (see [README][esm-readme]).\n-   If you are using Deno, visit the [`deno`][deno-url] branch (see [README][deno-readme] for usage intructions).\n-   For use in Observable, or in browser/node environments, use the [Universal Module Definition (UMD)][umd] build available on the [`umd`][umd-url] branch (see [README][umd-readme]).\n\nThe [branches.md][branches-url] file summarizes the available branches and displays a diagram illustrating their relationships.\n\nTo view installation and usage instructions specific to each branch build, be sure to explicitly navigate to the respective README files on each branch, as linked to above.\n\n\u003c/section\u003e\n\n\u003csection class=\"usage\"\u003e\n\n## Usage\n\n```javascript\nvar deepHasProp = require( '@stdlib/assert-deep-has-property' );\n```\n\n#### deepHasProp( value, path\\[, options] )\n\nReturns a `boolean` indicating if a `value` has a specified `path`, either own or inherited.\n\n\u003c!-- eslint-disable object-curly-newline, object-curly-spacing --\u003e\n\n```javascript\nfunction Foo() {\n    return this;\n}\nFoo.prototype.b = {\n    'c': 'd'\n};\n\nvar obj = { 'a': new Foo() };\n\nvar bool = deepHasProp( obj, 'a.b.c' );\n// returns true\n\nbool = deepHasProp( obj, 'a.b.c.d.e' );\n// returns false\n```\n\nIf a key path includes an `array`, specify the numeric index.\n\n\u003c!-- eslint-disable object-curly-newline, object-curly-spacing --\u003e\n\n```javascript\nvar arr = [\n    {\n        'a': [\n            {\n                'b': [\n                    { 'c': 'd' },\n                    { 'e': 'f' }\n                ]\n            }\n        ]\n    }\n];\n\nvar bool = deepHasProp( arr, '0.a.0.b.0.c' );\n// returns true\n\nbool = deepHasProp( arr, '0.a.1.b.0.c' );\n// returns false\n\nbool = deepHasProp( arr, '0.a.0.b.1.c' );\n// returns false\n```\n\nThe key path may be specified as either a delimited `string` or a key `array`.\n\n\u003c!-- eslint-disable object-curly-newline, object-curly-spacing --\u003e\n\n```javascript\nvar obj = { 'a': { 'b': { 'c': 'd' } } };\n\nvar bool = deepHasProp( obj, [ 'a', 'b', 'c' ] );\n// returns true\n```\n\nThe function accepts the following `options`:\n\n-   **sep**: key path separator. Default: `'.'`.\n\nBy default, the function assumes `.` separated key values. To specify an alternative separator, set the `sep` option.\n\n\u003c!-- eslint-disable object-curly-newline, object-curly-spacing --\u003e\n\n```javascript\nvar obj = { 'a': { 'b': { 'c': 'd' } } };\n\nvar bool = deepHasProp( obj, 'a/b/c', {\n    'sep': '/'\n});\n// returns true\n```\n\n#### deepHasProp.factory( path\\[, options] )\n\nReturns a `function` which tests whether a `value` contains a nested key `path`, either own or inherited.\n\n```javascript\nvar has = deepHasProp.factory( 'a/b/c', {\n    'sep': '/'\n});\n```\n\n#### has( value )\n\nReturns a `boolean` indicating whether a `value` contains a nested key `path`, either own or inherited.\n\n\u003c!-- eslint-disable object-curly-newline, object-curly-spacing --\u003e\n\n```javascript\nvar has = deepHasProp.factory( 'a.b.c' );\n\nfunction Foo() {\n    return this;\n}\nFoo.prototype.b = {\n    'c': 'd'\n};\n\nvar obj = { 'a': new Foo() };\n\nvar bool = has( obj );\n// returns true\n```\n\n\u003c/section\u003e\n\n\u003c!-- /.usage --\u003e\n\n\u003csection class=\"notes\"\u003e\n\n## Notes\n\n-   When provided `null` or `undefined`, the function result is always `false`.\n\n    ```javascript\n    var bool = deepHasProp( null, 'a.b.c' );\n    // returns false\n\n    bool = deepHasProp( void 0, 'a.b.c' );\n    // returns false\n    ```\n\n-   Property values other than `null` or `undefined` are coerced to `objects`.\n\n    ```javascript\n    var obj = {\n        'a': 'b'\n    };\n\n    var bool = deepHasProp( obj, 'a.length' );\n    // returns true\n    ```\n\n-   Key path `array` elements are coerced to `strings`.\n\n    ```javascript\n    var obj = {\n        'null': false\n    };\n    var bool = deepHasProp( obj, [ null ] );\n    // returns true\n\n    obj = {\n        '[object Object]': false\n    };\n    bool = deepHasProp( obj, [ {} ] );\n    // returns true\n    ```\n\n\u003c/section\u003e\n\n\u003c!-- /.notes --\u003e\n\n\u003csection class=\"examples\"\u003e\n\n## Examples\n\n\u003c!-- eslint-disable object-curly-newline, object-curly-spacing --\u003e\n\n\u003c!-- eslint no-undef: \"error\" --\u003e\n\n```javascript\nvar deepHasProp = require( '@stdlib/assert-deep-has-property' );\n\nvar bool = deepHasProp( { 'a': { 'b': { 'c': 'd' } } }, 'a.b.c' );\n// returns true\n\nbool = deepHasProp( { 'a': { 'b': { 'c': 'd' } } }, [ 'a', 'b', 'hasOwnProperty' ] );\n// returns true\n\nbool = deepHasProp( { 'a': { 'b': { 'c': 'd' } } }, 'a/b/c', {\n    'sep': '/'\n});\n// returns true\n\nbool = deepHasProp( { 'a': { 'b': { 'c': 'd' } } }, 'a.b.c.d' );\n// returns false\n\nbool = deepHasProp( { 'a': [ { 'b': { 'c': 'd' } } ] }, [ 'a', '0', 'b', 'c', 'd' ] );\n// returns false\n\nbool = deepHasProp( { 'a': { 'b': { 'c': 'd' } } }, 'a/b/c/d/e', {\n    'sep': '/'\n});\n// returns false\n\n// Create a customized function:\nvar has = deepHasProp.factory( 'a_b_c', {\n    'sep': '_'\n});\n\nbool = has( { 'a': { 'b': { 'c': 'd' } } } );\n// returns true\n\nbool = has( { 'a': [ { 'b': { 'c': 'd' } } ] } );\n// returns false\n```\n\n\u003c/section\u003e\n\n\u003c!-- /.examples --\u003e\n\n\u003c!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. --\u003e\n\n\u003csection class=\"related\"\u003e\n\n* * *\n\n## See Also\n\n-   \u003cspan class=\"package-name\"\u003e[`@stdlib/assert-deep-has-own-property`][@stdlib/assert/deep-has-own-property]\u003c/span\u003e\u003cspan class=\"delimiter\"\u003e: \u003c/span\u003e\u003cspan class=\"description\"\u003etest whether an object contains a nested key path.\u003c/span\u003e\n-   \u003cspan class=\"package-name\"\u003e[`@stdlib/assert-has-own-property`][@stdlib/assert/has-own-property]\u003c/span\u003e\u003cspan class=\"delimiter\"\u003e: \u003c/span\u003e\u003cspan class=\"description\"\u003etest if an object has a specified property.\u003c/span\u003e\n-   \u003cspan class=\"package-name\"\u003e[`@stdlib/utils-deep-get`][@stdlib/utils/deep-get]\u003c/span\u003e\u003cspan class=\"delimiter\"\u003e: \u003c/span\u003e\u003cspan class=\"description\"\u003eget a nested property value.\u003c/span\u003e\n-   \u003cspan class=\"package-name\"\u003e[`@stdlib/utils-deep-pluck`][@stdlib/utils/deep-pluck]\u003c/span\u003e\u003cspan class=\"delimiter\"\u003e: \u003c/span\u003e\u003cspan class=\"description\"\u003eextract a nested property value from each element of an object array.\u003c/span\u003e\n-   \u003cspan class=\"package-name\"\u003e[`@stdlib/utils-deep-set`][@stdlib/utils/deep-set]\u003c/span\u003e\u003cspan class=\"delimiter\"\u003e: \u003c/span\u003e\u003cspan class=\"description\"\u003eset a nested property value.\u003c/span\u003e\n\n\u003c/section\u003e\n\n\u003c!-- /.related --\u003e\n\n\u003c!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. --\u003e\n\n\n\u003csection class=\"main-repo\" \u003e\n\n* * *\n\n## Notice\n\nThis package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.\n\nFor more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].\n\n#### Community\n\n[![Chat][chat-image]][chat-url]\n\n---\n\n## License\n\nSee [LICENSE][stdlib-license].\n\n\n## Copyright\n\nCopyright \u0026copy; 2016-2025. The Stdlib [Authors][stdlib-authors].\n\n\u003c/section\u003e\n\n\u003c!-- /.stdlib --\u003e\n\n\u003c!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. --\u003e\n\n\u003csection class=\"links\"\u003e\n\n[npm-image]: http://img.shields.io/npm/v/@stdlib/assert-deep-has-property.svg\n[npm-url]: https://npmjs.org/package/@stdlib/assert-deep-has-property\n\n[test-image]: https://github.com/stdlib-js/assert-deep-has-property/actions/workflows/test.yml/badge.svg?branch=main\n[test-url]: https://github.com/stdlib-js/assert-deep-has-property/actions/workflows/test.yml?query=branch:main\n\n[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/assert-deep-has-property/main.svg\n[coverage-url]: https://codecov.io/github/stdlib-js/assert-deep-has-property?branch=main\n\n\u003c!--\n\n[dependencies-image]: https://img.shields.io/david/stdlib-js/assert-deep-has-property.svg\n[dependencies-url]: https://david-dm.org/stdlib-js/assert-deep-has-property/main\n\n--\u003e\n\n[chat-image]: https://img.shields.io/gitter/room/stdlib-js/stdlib.svg\n[chat-url]: https://app.gitter.im/#/room/#stdlib-js_stdlib:gitter.im\n\n[stdlib]: https://github.com/stdlib-js/stdlib\n\n[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors\n\n[umd]: https://github.com/umdjs/umd\n[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules\n\n[deno-url]: https://github.com/stdlib-js/assert-deep-has-property/tree/deno\n[deno-readme]: https://github.com/stdlib-js/assert-deep-has-property/blob/deno/README.md\n[umd-url]: https://github.com/stdlib-js/assert-deep-has-property/tree/umd\n[umd-readme]: https://github.com/stdlib-js/assert-deep-has-property/blob/umd/README.md\n[esm-url]: https://github.com/stdlib-js/assert-deep-has-property/tree/esm\n[esm-readme]: https://github.com/stdlib-js/assert-deep-has-property/blob/esm/README.md\n[branches-url]: https://github.com/stdlib-js/assert-deep-has-property/blob/main/branches.md\n\n[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/assert-deep-has-property/main/LICENSE\n\n\u003c!-- \u003crelated-links\u003e --\u003e\n\n[@stdlib/assert/deep-has-own-property]: https://github.com/stdlib-js/assert-deep-has-own-property\n\n[@stdlib/assert/has-own-property]: https://github.com/stdlib-js/assert-has-own-property\n\n[@stdlib/utils/deep-get]: https://github.com/stdlib-js/utils-deep-get\n\n[@stdlib/utils/deep-pluck]: https://github.com/stdlib-js/utils-deep-pluck\n\n[@stdlib/utils/deep-set]: https://github.com/stdlib-js/utils-deep-set\n\n\u003c!-- \u003c/related-links\u003e --\u003e\n\n\u003c/section\u003e\n\n\u003c!-- /.links --\u003e\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fstdlib-js%2Fassert-deep-has-property","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fstdlib-js%2Fassert-deep-has-property","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fstdlib-js%2Fassert-deep-has-property/lists"}