# compute-dtype > Determines the underlying data type of an input value. Latest version **1.0.0** (published 2015-06-03) · MIT license · 0 weekly downloads ## Install ```sh npm install compute-dtype pnpm add compute-dtype yarn add compute-dtype bun add compute-dtype ``` ## Health **Score 15/100 (F)** — status: abandoned. Positive: no vulnerabilities. Warnings: low downloads; no types; no esm support. Negative: abandoned; low maintenance score. ## Facts | | | |---|---| | Version | 1.0.0 | | Published | 2015-06-03 | | First published | 2015-06-03 | | Weekly downloads | 0 | | License | MIT | | TypeScript types | none | | Module format | CommonJS | | Dependencies | 2 | | Known vulnerabilities | 0 | | Install scripts | no | | GitHub stars | 3 | | Author | Athan Reines | | Maintainers | kgryte | | Keywords | compute.io, compute, computation, dtype, data, type, ctor, constructor, typeof, array, object, util, utils, utility, utilities | ## Links - npm: https://www.npmjs.com/package/compute-dtype - Repository: https://github.com/compute-io/dtype - Homepage: https://github.com/compute-io/dtype#readme - Issues: https://github.com/compute-io/dtype/issues - npm.io page: https://npm.io/package/compute-dtype ## Dependencies (2) - [type-name](https://npm.io/package/type-name.md) ^1.0.1 - [compute-array-dtype](https://npm.io/package/compute-array-dtype.md) ^1.0.0 ## Alternatives - [@libsql/sqlite3](https://npm.io/package/@libsql/sqlite3.md) — 39.8K weekly downloads - [@fortemi/core](https://npm.io/package/@fortemi/core.md) — 461 weekly downloads - [cdb-converter](https://npm.io/package/cdb-converter.md) — 341 weekly downloads - [@uplo/adapter-prisma](https://npm.io/package/@uplo/adapter-prisma.md) — 75 weekly downloads - [typeorm-aios](https://npm.io/package/typeorm-aios.md) — 30 weekly downloads ## Recent versions - 1.0.0 (latest) — 2015-06-03 - 0.0.0 — 2015-06-03 ## README dtype === [![NPM version][npm-image]][npm-url] [![Build Status][travis-image]][travis-url] [![Coverage Status][coveralls-image]][coveralls-url] [![Dependencies][dependencies-image]][dependencies-url] > Determines the underlying data type of an input value. ## Installation ``` bash $ npm install compute-dtype ``` For use in the browser, use [browserify](https://github.com/substack/node-browserify). ## Usage ``` javascript var dtype = require( 'compute-dtype' ); ``` #### dtype( value ) Determines the underlying data type of an input `value`. ``` javascript var dt = dtype( Int16Array( 10 ) ); // returns 'int16' dt = dtype( true ); // returns 'boolean' ``` The following input values are supported: | Value | Data Type | |:------|:------------| | [`undefined`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/undefined) | undefined | | [`null`](https://developer.mozilla.org/en-US/docs/Glossary/Primitive) | null | | [`true|false`](https://developer.mozilla.org/en-US/docs/Glossary/Primitive) | boolean | | [``](https://developer.mozilla.org/en-US/docs/Glossary/Primitive) | number | | [``](https://developer.mozilla.org/en-US/docs/Glossary/Primitive) | string | | [``](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol) | symbol | | [``](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function) | function | | [`Buffer`](https://nodejs.org/api/buffer.html) | binary | | [`ArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer) | binary | | [`Int8Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Int8Array) | int8 | | [`Uint8Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array) | uint8 | | [`Uint8ClampedArray`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8ClampedArray) | uint8_clamped | | [`Int16Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Int16Array) | int16 | | [`Uint16Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint16Array) | uint16 | | [`Int32Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Int32Array) | int32 | | [`Uint32Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint32Array) | uint32 | | [`Float32Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Float32Array) | float32 | | [`Float64Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Float64Array) | float64 | | [`Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array) | generic | | Other | generic | __Note__: values created using `String`, `Boolean`, and `Number` constructors are `Objects` and considered `generic`. ## Examples ``` javascript var dtype = require( 'compute-dtype' ); console.log( dtype( null ) ); // returns 'null' console.log( dtype( undefined ) ); // returns 'undefined' console.log( dtype( true ) ); // returns 'boolean' console.log( dtype( Math.PI ) ); // returns 'number' console.log( dtype( 'beep' ) ); // returns 'string' console.log( dtype( function beep(){} ) ); // returns 'function' console.log( dtype( new Int8Array( 10 ) ) ); // returns 'int8' console.log( dtype( new Float64Array( 20 ) ) ); // returns 'float64' console.log( dtype( new Buffer( 'woot' ) ) ); // returns 'binary' console.log( dtype( [] ) ); // returns 'generic' console.log( dtype( {} ) ); // returns 'generic' console.log( dtype( new String( 'beep' ) ) ); // returns 'generic' console.log( dtype( new Boolean( true ) ) ); // returns 'generic' console.log( dtype( new Number( 5 ) ) ); // returns 'generic' ``` To run the example code from the top-level application directory, ``` bash $ node ./examples/index.js ``` ## Tests ### Unit Unit tests use the [Mocha](http://mochajs.org/) test framework with [Chai](http://chaijs.com) assertions. To run the tests, execute the following command in the top-level application directory: ``` bash $ make test ``` All new feature development should have corresponding unit tests to validate correct functionality. ### Test Coverage This repository uses [Istanbul](https://github.com/gotwarlost/istanbul) as its code coverage tool. To generate a test coverage report, execute the following command in the top-level application directory: ``` bash $ make test-cov ``` Istanbul creates a `./reports/coverage` directory. To access an HTML version of the report, ``` bash $ make view-cov ``` --- ## License [MIT license](http://opensource.org/licenses/MIT). ## Copyright Copyright © 2015. The Compute.io Authors. 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