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which-typed-array
Advanced tools
Which kind of Typed Array is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.
The `which-typed-array` npm package is designed to identify the type of a given typed array instance. It supports all built-in JavaScript typed array types, including `Int8Array`, `Uint8Array`, `Uint8ClampedArray`, `Int16Array`, `Uint16Array`, `Int32Array`, `Uint32Array`, `Float32Array`, `Float64Array`, and `BigInt64Array`, `BigUint64Array`. This package is useful for applications that need to process or manipulate typed arrays and must determine their specific types to apply the correct operations.
Identifying Typed Array Type
This feature allows the identification of the type of a typed array. The function `whichTypedArray` is called with a typed array as its argument, and it returns a string representing the type of the typed array.
"use strict";\nconst whichTypedArray = require('which-typed-array');\nconsole.log(whichTypedArray(new Uint8Array())); // 'Uint8Array'\nconsole.log(whichTypedArray(new Float32Array())); // 'Float32Array'"
The `is-typedarray` package is similar to `which-typed-array` in that it is used to check if a given object is a typed array. However, unlike `which-typed-array`, it does not specify the type of the typed array; it only checks if the object is a typed array or not.
Which kind of Typed Array is this JavaScript value? Works cross-realm, without instanceof
, and despite Symbol.toStringTag.
var whichTypedArray = require('which-typed-array');
var assert = require('assert');
assert.equal(false, whichTypedArray(undefined));
assert.equal(false, whichTypedArray(null));
assert.equal(false, whichTypedArray(false));
assert.equal(false, whichTypedArray(true));
assert.equal(false, whichTypedArray([]));
assert.equal(false, whichTypedArray({}));
assert.equal(false, whichTypedArray(/a/g));
assert.equal(false, whichTypedArray(new RegExp('a', 'g')));
assert.equal(false, whichTypedArray(new Date()));
assert.equal(false, whichTypedArray(42));
assert.equal(false, whichTypedArray(NaN));
assert.equal(false, whichTypedArray(Infinity));
assert.equal(false, whichTypedArray(new Number(42)));
assert.equal(false, whichTypedArray('foo'));
assert.equal(false, whichTypedArray(Object('foo')));
assert.equal(false, whichTypedArray(function () {}));
assert.equal(false, whichTypedArray(function* () {}));
assert.equal(false, whichTypedArray(x => x * x));
assert.equal(false, whichTypedArray([]));
assert.equal('Int8Array', whichTypedArray(new Int8Array()));
assert.equal('Uint8Array', whichTypedArray(new Uint8Array()));
assert.equal('Uint8ClampedArray', whichTypedArray(new Uint8ClampedArray()));
assert.equal('Int16Array', whichTypedArray(new Int16Array()));
assert.equal('Uint16Array', whichTypedArray(new Uint16Array()));
assert.equal('Int32Array', whichTypedArray(new Int32Array()));
assert.equal('Uint32Array', whichTypedArray(new Uint32Array()));
assert.equal('Float32Array', whichTypedArray(new Float32Array()));
assert.equal('Float64Array', whichTypedArray(new Float64Array()));
assert.equal('BigInt64Array', whichTypedArray(new BigInt64Array()));
assert.equal('BigUint64Array', whichTypedArray(new BigUint64Array()));
Simply clone the repo, npm install
, and run npm test
FAQs
Which kind of Typed Array is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.
The npm package which-typed-array receives a total of 37,407,243 weekly downloads. As such, which-typed-array popularity was classified as popular.
We found that which-typed-array demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
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