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周林芳
2023-08-11 10:45:20 +08:00
commit 161ca982f3
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node_modules/core-js/internals/array-buffer-transfer.js generated vendored Normal file
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'use strict';
var global = require('../internals/global');
var uncurryThis = require('../internals/function-uncurry-this');
var uncurryThisAccessor = require('../internals/function-uncurry-this-accessor');
var toIndex = require('../internals/to-index');
var isDetached = require('../internals/array-buffer-is-detached');
var arrayBufferByteLength = require('../internals/array-buffer-byte-length');
var PROPER_TRANSFER = require('../internals/structured-clone-proper-transfer');
var TypeError = global.TypeError;
var structuredClone = global.structuredClone;
var ArrayBuffer = global.ArrayBuffer;
var DataView = global.DataView;
var min = Math.min;
var ArrayBufferPrototype = ArrayBuffer.prototype;
var DataViewPrototype = DataView.prototype;
var slice = uncurryThis(ArrayBufferPrototype.slice);
var isResizable = uncurryThisAccessor(ArrayBufferPrototype, 'resizable', 'get');
var maxByteLength = uncurryThisAccessor(ArrayBufferPrototype, 'maxByteLength', 'get');
var getInt8 = uncurryThis(DataViewPrototype.getInt8);
var setInt8 = uncurryThis(DataViewPrototype.setInt8);
module.exports = PROPER_TRANSFER && function (arrayBuffer, newLength, preserveResizability) {
var byteLength = arrayBufferByteLength(arrayBuffer);
var newByteLength = newLength === undefined ? byteLength : toIndex(newLength);
var fixedLength = !isResizable || !isResizable(arrayBuffer);
if (isDetached(arrayBuffer)) throw TypeError('ArrayBuffer is detached');
var newBuffer = structuredClone(arrayBuffer, { transfer: [arrayBuffer] });
if (byteLength == newByteLength && (preserveResizability || fixedLength)) return newBuffer;
if (byteLength >= newByteLength && (!preserveResizability || fixedLength)) return slice(newBuffer, 0, newByteLength);
var options = (preserveResizability && !fixedLength) && maxByteLength ? { maxByteLength: maxByteLength(newBuffer) } : undefined;
var newNewBuffer = new ArrayBuffer(newByteLength, options);
var a = new DataView(newBuffer);
var b = new DataView(newNewBuffer);
var copyLength = min(newByteLength, byteLength);
for (var i = 0; i < copyLength; i++) setInt8(b, i, getInt8(a, i));
return newNewBuffer;
};