is-array-buffer (original) (raw)

3.0.5 • Public • Published 5 months ago

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is-array-buffer

Is this value a JS ArrayBuffer? This module works cross-realm/iframe, does not depend on instanceof or mutable properties, and despite ES6 Symbol.toStringTag.

Example

var assert = require('assert'); var isArrayBuffer = require('is-array-buffer');

assert(!isArrayBuffer(function () {})); assert(!isArrayBuffer(null)); assert(!isArrayBuffer(function* () { yield 42; return Infinity; }); assert(!isArrayBuffer(Symbol('foo'))); assert(!isArrayBuffer(1n)); assert(!isArrayBuffer(Object(1n)));

assert(!isArrayBuffer(new Set())); assert(!isArrayBuffer(new WeakSet())); assert(!isArrayBuffer(new Map())); assert(!isArrayBuffer(new WeakMap())); assert(!isArrayBuffer(new WeakRef({}))); assert(!isArrayBuffer(new FinalizationRegistry(() => {}))); assert(!isArrayBuffer(new SharedArrayBuffer()));

assert(isArrayBuffer(new ArrayBuffer()));

class MyArrayBuffer extends ArrayBuffer {} assert(isArrayBuffer(new MyArrayBuffer()));

Tests

Simply clone the repo, npm install, and run npm test