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node_modules/is-array-buffer/index.js
43 строки
1 KB
Mikhail Popov
j
23 фев 2026, 16:12
23 фев 2026, 16:12
ff7232a
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'use strict'; var callBind = require('call-bind'); var callBound = require('call-bound'); var GetIntrinsic = require('get-intrinsic'); var $ArrayBuffer = GetIntrinsic('%ArrayBuffer%', true); /** @type {undefined | ((receiver: ArrayBuffer) => number) | ((receiver: unknown) => never)} */ var $byteLength = callBound('ArrayBuffer.prototype.byteLength', true); var $toString = callBound('Object.prototype.toString'); // in node 0.10, ArrayBuffers have no prototype methods, but have an own slot-checking `slice` method var abSlice = !!$ArrayBuffer && !$byteLength && new $ArrayBuffer(0).slice; var $abSlice = !!abSlice && callBind(abSlice); /** @type {import('.')} */ module.exports = $byteLength || $abSlice ? function isArrayBuffer(obj) { if (!obj || typeof obj !== 'object') { return false; } try { if ($byteLength) { // @ts-expect-error no idea why TS can't handle the overload $byteLength(obj); } else { // @ts-expect-error TS chooses not to type-narrow inside a closure $abSlice(obj, 0); } return true; } catch (e) { return false; } } : $ArrayBuffer // in node 0.8, ArrayBuffers have no prototype or own methods, but also no Symbol.toStringTag ? function isArrayBuffer(obj) { return $toString(obj) === '[object ArrayBuffer]'; } // @ts-expect-error : function isArrayBuffer(obj) { // eslint-disable-line no-unused-vars return false; };