@stdlib/object-ctor

Object constructor.

https://github.com/stdlib-js/object-ctor

Science Score: 44.0%

This score indicates how likely this project is to be science-related based on various indicators:

✓
CITATION.cff file
Found CITATION.cff file
✓
codemeta.json file
Found codemeta.json file
✓
.zenodo.json file
Found .zenodo.json file
○
DOI references
○
Academic publication links
○
Committers with academic emails
○
Institutional organization owner
○
JOSS paper metadata
○
Scientific vocabulary similarity
Low similarity (15.2%) to scientific vocabulary

Keywords

constructor ctor javascript node node-js nodejs object stdlib

Last synced: 6 months ago · JSON representation ·

Repository

Object constructor.

Basic Info

Host: GitHub
Owner: stdlib-js
License: apache-2.0
Language: JavaScript
Default Branch: main
Homepage: https://github.com/stdlib-js/stdlib
Size: 387 KB

Statistics

Stars: 2
Watchers: 3
Forks: 0
Open Issues: 0
Releases: 0

Topics

constructor ctor javascript node node-js nodejs object stdlib

Created over 3 years ago · Last pushed about 1 year ago

Metadata Files

Readme Changelog Contributing License Code of conduct Citation Security

We 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.

The 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.

When 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.

To join us in bringing numerical computing to the web, get started by checking us out on GitHub, and please consider financially supporting stdlib. We greatly appreciate your continued support!

Object

Object constructor.

## Installation ```bash npm install @stdlib/object-ctor ``` Alternatively, - 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]). - If you are using Deno, visit the [`deno`][deno-url] branch (see [README][deno-readme] for usage intructions). - 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]). The [branches.md][branches-url] file summarizes the available branches and displays a diagram illustrating their relationships. To 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.

## Usage ```javascript var Object = require( '@stdlib/object-ctor' ); ``` #### Object( value ) Returns a new [object][mdn-object]. ```javascript var o = new Object( null ); // returns {} ``` * * * ### Properties #### Object.prototype.constructor Property whose value is a reference to the constructor function that created the instance object. ```javascript var o = new Object( null ); var ctr = o.constructor; // returns Object ``` * * * ### Methods #### Object.assign( target, ...sources ) Assigns enumerable properties of one or more source objects to a target object. ```javascript var o = Object.assign( {}, { 'a': 1, 'b': 2 } ); // returns { 'a': 1, 'b': 2 } ``` #### Object.create( prototype, properties ) Returns a new object with the given prototype and properties. ```javascript var o = Object.create( null, { 'a': { 'value': 1 }, 'b': { 'value': 2 } }); // returns { 'a': 1, 'b': 2 } function Person( first, last ) { this.first = first; this.last = last; } var p = Object.create( Person.prototype, { 'first': { 'value': 'Jane' }, 'last': { 'value': 'Doe' } }); // returns Person { 'first': 'Jane', 'last': 'Doe' } ``` #### Object.defineProperties( target, properties ) Defines new or modifies existing properties directly on an object, returning the object. ```javascript var o = Object.defineProperties( {}, { 'a': { 'value': 1 }, 'b': { 'value': 2 } }); // returns { 'a': 1, 'b': 2 } ``` #### Object.defineProperty( target, property, descriptor ) Defines a new property directly on an object, or modifies an existing property on an object, and returns the object. ```javascript var o = Object.defineProperty( {}, 'a', { 'value': 1, 'writable': true, 'enumerable': true, 'configurable': true }); // returns { 'a': 1 } ``` #### Object.entries( obj ) Returns an array of a given object's own enumerable string-keyed property entries, i.e. `[key, value]` pairs. ```javascript var o = { 'a': 1, 'b': 2 }; var arr = Object.entries( o ); // e.g., returns [ [ 'a', 1 ], [ 'b', 2 ] ] ``` #### Object.freeze( o ) Freezes an object. A frozen object can no longer be changed; freezing an object prevents new properties from being added to it, existing properties from being removed, and existing properties from being changed. ```javascript var o = { 'a': 1 }; Object.freeze( o ); // returns { 'a': 1 } o.b = 1; var v = o.b; // returns undefined ``` #### Object.getOwnPropertyDescriptor( o, p ) Returns an object that contains the properties of the given object. ```javascript var o = { 'a': 1 }; var d = Object.getOwnPropertyDescriptor( o, 'a' ); // returns { 'value': 1, 'writable': true, 'enumerable': true, 'configurable': true } ``` #### Object.getOwnPropertyDescriptors( o ) Returns an object whose properties are the result of calling `Object.getOwnPropertyDescriptor()` on every property of the given object. ```javascript var o = { 'a': 1, 'b': 2 }; var d = Object.getOwnPropertyDescriptors( o ); // returns { 'a': { 'value': 1, 'writable': true, 'enumerable': true, 'configurable': true }, 'b': { 'value': 2, 'writable': true, 'enumerable': true, 'configurable': true } } ``` #### Object.getOwnPropertyNames( o ) Returns an array of a given object's own property names. ```javascript var o = { 'a': 1, 'b': 2 }; var arr = Object.getOwnPropertyNames( o ); // e.g., returns [ 'a', 'b' ] ``` #### Object.getOwnPropertySymbols( o ) Returns an array of a given object's own property symbols. ```javascript var o = { 'a': 1 }; o[ Symbol( 'b' ) ] = 2; var arr = Object.getOwnPropertySymbols( o ); // returns [ Symbol(b) ] ``` #### Object.getPrototypeOf( o ) Returns the prototype of an object. ```javascript var o = { 'a': 1 }; var p = Object.getPrototypeOf( o ); // returns {} ``` #### Object.hasOwn( o, p ) Returns a boolean indicating whether an object has a property with the specified name. ```javascript var o = { 'a': 1 }; var b = Object.hasOwn( o, 'b' ); // returns false ``` #### Object.prototype.hasOwnProperty( p ) Returns a boolean indicating whether an object has a property with the specified name. ```javascript var o = { 'a': 1 }; var b = o.hasOwnProperty( 'a' ); // returns true ``` #### Object.is( value1, value2 ) Returns a boolean indicating whether two values are the same value. ```javascript var b = Object.is( 1, 1 ); // returns true b = Object.is( 1, '1' ); // returns false ``` #### Object.isExtensible( o ) Returns a boolean indicating whether an object is extensible (whether new properties can be added to it). ```javascript var o = { 'a': 1 }; var b = Object.isExtensible( o ); // returns true Object.preventExtensions( o ); b = Object.isExtensible( o ); // returns false ``` #### Object.isFrozen( o ) Returns a boolean indicating whether an object is frozen. Frozen objects can no longer be changed; freezing an object prevents new properties from being added to it, existing properties from being removed, and existing properties from being changed. ```javascript var o = { 'a': 1 }; var b = Object.isFrozen( o ); // returns false Object.freeze( o ); b = Object.isFrozen( o ); // returns true ``` #### Object.prototype.isPrototypeOf( o ) Returns a boolean indicating whether an object is in the prototype chain of another object. ```javascript var o = { 'a': 1 }; var p = { '__proto__': o }; var b = o.isPrototypeOf( p ); // returns true ``` #### Object.isSealed( o ) Returns a boolean indicating whether an object is sealed. An object is sealed if it is not extensible and all of its properties are non-configurable. ```javascript var o = { 'a': 1 }; var b = Object.isSealed( o ); // returns false Object.seal( o ); b = Object.isSealed( o ); // returns true ``` #### Object.keys( o ) Returns an array of a given object's own enumerable property names. ```javascript var o = { 'a': 1, 'b': 2 }; var arr = Object.keys( o ); // e.g., returns [ 'a', 'b' ] ``` #### Object.preventExtensions( o ) Prevents new properties from being added to an object. ```javascript var o = { 'a': 1 }; Object.preventExtensions( o ); o.b = 2; var b = ( o.b === void 0 ); // returns true o.a = 3; b = ( o.a === 3 ); // returns true ``` #### Object.prototype.propertyIsEnumerable( p ) Returns a boolean indicating whether a property is enumerable. ```javascript var o = { 'a': 1 }; var b = o.propertyIsEnumerable( 'a' ); // returns true var arr = [ 1, 2, 3 ]; b = arr.propertyIsEnumerable( 'length' ); // returns false ``` #### Object.seal( o ) Seals an object, preventing new properties from being added to it (i.e., making it non extensible) and marking all existing properties as non-configurable. ```javascript var o = { 'a': 1 }; Object.seal( o ); o.b = 2; var b = ( o.b === void 0 ); // returns true ``` #### Object.setPrototypeOf( o, proto ) Sets the prototype of an object. ```javascript var o = { 'a': 1 }; var p = { 'b': 2 }; Object.setPrototypeOf( o, p ); var b = ( o.b === 2 ); // returns true ``` #### Object.prototype.toLocaleString() Returns a string representing the object. ```javascript var o = { 'a': 1 }; var str = o.toLocaleString(); // returns ``` #### Object.prototype.toString() Returns a string representing the object. ```javascript var o = { 'a': 1 }; var str = o.toString(); // returns ``` #### Object.prototype.valueOf() Returns the primitive value of the object. ```javascript var o = {}; var v = o.valueOf(); // returns {} ``` #### Object.values( o ) Returns an array of a given object's own enumerable property values. ```javascript var o = { 'a': 1, 'b': 2 }; var arr = Object.values( o ); // e.g., returns [ 1, 2 ] ```

## Notes - If provided `null` or `undefined`, the function returns an empty object. - If provided an existing object, the function returns the input value unchanged. - Otherwise, if provided any other value (e.g., a number, string, etc), the function will return an object of the corresponding type.

## Examples ```javascript var Object = require( '@stdlib/object-ctor' ); var values = [ '5', 5, true, false, null, void 0, [], {} ]; var i; for ( i = 0; i < values.length; i++ ) { console.log( new Object( values[ i ] ) ); } ```

* * * ## Notice This 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. For 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]. #### Community [![Chat][chat-image]][chat-url] --- ## License See [LICENSE][stdlib-license]. ## Copyright Copyright © 2016-2024. The Stdlib [Authors][stdlib-authors].

Owner

Name: stdlib
Login: stdlib-js
Kind: organization

Website: https://stdlib.io
Twitter: stdlibjs
Repositories: 3,692
Profile: https://github.com/stdlib-js

Standard library for JavaScript.

Citation (CITATION.cff)

cff-version: 1.2.0
title: stdlib
message: >-
  If you use this software, please cite it using the
  metadata from this file.

type: software

authors:
  - name: The Stdlib Authors
    url: https://github.com/stdlib-js/stdlib/graphs/contributors

repository-code: https://github.com/stdlib-js/stdlib
url: https://stdlib.io

abstract: |
  Standard library for JavaScript and Node.js.

keywords:
  - JavaScript
  - Node.js
  - TypeScript
  - standard library
  - scientific computing
  - numerical computing
  - statistical computing

license: Apache-2.0 AND BSL-1.0

date-released: 2016

GitHub Events

Total

Push event: 14

Last Year

Push event: 14

Committers

Last synced: about 2 years ago

All Time

Total Commits: 30
Total Committers: 1
Avg Commits per committer: 30.0
Development Distribution Score (DDS): 0.0

Past Year

Commits: 16
Committers: 1
Avg Commits per committer: 16.0
Development Distribution Score (DDS): 0.0

Top Committers

Name	Email	Commits
stdlib-bot	n**y@s**o	30

Committer Domains (Top 20 + Academic)

stdlib.io: 1

Issues and Pull Requests

Last synced: 6 months ago

All Time

Total issues: 0
Total pull requests: 0
Average time to close issues: N/A
Average time to close pull requests: N/A
Total issue authors: 0
Total pull request authors: 0
Average comments per issue: 0
Average comments per pull request: 0
Merged pull requests: 0
Bot issues: 0
Bot pull requests: 0

Past Year

Issues: 0
Pull requests: 0
Average time to close issues: N/A
Average time to close pull requests: N/A
Issue authors: 0
Pull request authors: 0
Average comments per issue: 0
Average comments per pull request: 0
Merged pull requests: 0
Bot issues: 0
Bot pull requests: 0

View more stats

Top Authors

Issue Authors

Pull Request Authors

Top Labels

Issue Labels

Pull Request Labels

Packages

Total packages: 1
Total downloads:
- npm 190,717 last-month
Total docker downloads: 97,465

Total dependent packages: 28
Total dependent repositories: 3
Total versions: 5
Total maintainers: 4

npmjs.org: @stdlib/object-ctor

Object constructor.

Homepage: https://stdlib.io
License: Apache-2.0
Latest release: 0.2.1
published almost 2 years ago

Versions: 5
Dependent Packages: 28
Dependent Repositories: 3
Downloads: 190,717 Last month
Docker Downloads: 97,465

Rankings

Downloads: 0.6%

Dependent packages count: 0.9%

Dependent repos count: 6.4%

Average: 7.6%

Stargazers count: 14.5%

Forks count: 15.4%

Maintainers (4)

planeshifter rreusser stdlib-bot kgryte

Funding

type: opencollective
url: https://opencollective.com/stdlib

Last synced: 6 months ago

Dependencies

package.json npm

@stdlib/bench ^0.0.x development
@stdlib/boolean-ctor ^0.0.x development
@stdlib/number-ctor ^0.0.x development
istanbul ^0.4.1 development
tap-spec 5.x.x development
tape git+https://github.com/kgryte/tape.git#fix/globby development

.github/workflows/benchmark.yml actions

actions/checkout v3 composite
actions/setup-node v3 composite

.github/workflows/cancel.yml actions

styfle/cancel-workflow-action 0.11.0 composite

.github/workflows/close_pull_requests.yml actions

superbrothers/close-pull-request v3 composite

.github/workflows/examples.yml actions

actions/checkout v3 composite
actions/setup-node v3 composite

.github/workflows/npm_downloads.yml actions

actions/checkout v3 composite
actions/setup-node v3 composite
actions/upload-artifact v3 composite
distributhor/workflow-webhook v3 composite

.github/workflows/productionize.yml actions

act10ns/slack v1 composite
actions/checkout v3 composite
actions/setup-node v3 composite
stdlib-js/bundle-action main composite
stdlib-js/transform-errors-action main composite

.github/workflows/publish.yml actions

JS-DevTools/npm-publish v1 composite
act10ns/slack v1 composite
actions/checkout v3 composite
actions/setup-node v3 composite
styfle/cancel-workflow-action 0.11.0 composite

.github/workflows/test.yml actions

act10ns/slack v1 composite
actions/checkout v3 composite
actions/setup-node v3 composite

.github/workflows/test_bundles.yml actions

act10ns/slack v1 composite
actions/checkout v3 composite
actions/setup-node v3 composite
denoland/setup-deno v1 composite

.github/workflows/test_coverage.yml actions

act10ns/slack v1 composite
actions/checkout v3 composite
actions/setup-node v3 composite
codecov/codecov-action v3 composite
distributhor/workflow-webhook v3 composite

.github/workflows/test_install.yml actions

act10ns/slack v1 composite
actions/checkout v3 composite
actions/setup-node v3 composite

@stdlib/object-ctor

Science Score: 44.0%

Keywords

Repository

Basic Info

Statistics

Topics

Metadata Files

README.md

Object

Owner

Citation (CITATION.cff)

GitHub Events

Total

Last Year

Committers

All Time

Past Year

Top Committers

Committer Domains (Top 20 + Academic)

Issues and Pull Requests

All Time

Past Year

Top Authors

Issue Authors

Pull Request Authors

Top Labels

Issue Labels

Pull Request Labels

Packages

npmjs.org: @stdlib/object-ctor

Rankings

Maintainers (4)

Funding

Dependencies