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node_modules/core-js/modules/es.array-buffer.slice.js

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+'use strict';
+var $ = require('../internals/export');
+var uncurryThis = require('../internals/function-uncurry-this-clause');
+var fails = require('../internals/fails');
+var ArrayBufferModule = require('../internals/array-buffer');
+var anObject = require('../internals/an-object');
+var toAbsoluteIndex = require('../internals/to-absolute-index');
+var toLength = require('../internals/to-length');
+var speciesConstructor = require('../internals/species-constructor');
+
+var ArrayBuffer = ArrayBufferModule.ArrayBuffer;
+var DataView = ArrayBufferModule.DataView;
+var DataViewPrototype = DataView.prototype;
+var nativeArrayBufferSlice = uncurryThis(ArrayBuffer.prototype.slice);
+var getUint8 = uncurryThis(DataViewPrototype.getUint8);
+var setUint8 = uncurryThis(DataViewPrototype.setUint8);
+
+var INCORRECT_SLICE = fails(function () {
+  return !new ArrayBuffer(2).slice(1, undefined).byteLength;
+});
+
+// `ArrayBuffer.prototype.slice` method
+// https://tc39.es/ecma262/#sec-arraybuffer.prototype.slice
+$({ target: 'ArrayBuffer', proto: true, unsafe: true, forced: INCORRECT_SLICE }, {
+  slice: function slice(start, end) {
+    if (nativeArrayBufferSlice && end === undefined) {
+      return nativeArrayBufferSlice(anObject(this), start); // FF fix
+    }
+    var length = anObject(this).byteLength;
+    var first = toAbsoluteIndex(start, length);
+    var fin = toAbsoluteIndex(end === undefined ? length : end, length);
+    var result = new (speciesConstructor(this, ArrayBuffer))(toLength(fin - first));
+    var viewSource = new DataView(this);
+    var viewTarget = new DataView(result);
+    var index = 0;
+    while (first < fin) {
+      setUint8(viewTarget, index++, getUint8(viewSource, first++));
+    } return result;
+  }
+});