29 lines
1007 B
JavaScript
29 lines
1007 B
JavaScript
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'use strict';
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var $TypeError = require('es-errors/type');
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var $byteLength = require('array-buffer-byte-length');
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var availableTypedArrays = require('available-typed-arrays')();
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var callBound = require('call-bind/callBound');
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var isArrayBuffer = require('is-array-buffer');
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var isSharedArrayBuffer = require('is-shared-array-buffer');
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var $sabByteLength = callBound('SharedArrayBuffer.prototype.byteLength', true);
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// https://262.ecma-international.org/8.0/#sec-isdetachedbuffer
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module.exports = function IsDetachedBuffer(arrayBuffer) {
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var isSAB = isSharedArrayBuffer(arrayBuffer);
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if (!isArrayBuffer(arrayBuffer) && !isSAB) {
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throw new $TypeError('Assertion failed: `arrayBuffer` must be an Object with an [[ArrayBufferData]] internal slot');
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}
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if ((isSAB ? $sabByteLength : $byteLength)(arrayBuffer) === 0) {
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try {
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new global[availableTypedArrays[0]](arrayBuffer); // eslint-disable-line no-new
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} catch (error) {
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return !!error && error.name === 'TypeError';
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}
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}
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return false;
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};
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