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48 lines
1.4 KiB
JavaScript
48 lines
1.4 KiB
JavaScript
// Copyright (C) 2016 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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es6id: 24.2.2.1
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esid: sec-dataview-buffer-byteoffset-bytelength
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description: >
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Use newTarget's custom constructor prototype if Object
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info: |
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24.2.2.1 DataView (buffer, byteOffset, byteLength )
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...
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12. Let O be ? OrdinaryCreateFromConstructor(NewTarget, "%DataViewPrototype%",
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« [[DataView]], [[ViewedArrayBuffer]], [[ByteLength]], [[ByteOffset]] »).
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...
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17. Return O.
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9.1.13 OrdinaryCreateFromConstructor ( constructor, intrinsicDefaultProto [ ,
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internalSlotsList ] )
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...
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2. Let proto be ? GetPrototypeFromConstructor(constructor,
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intrinsicDefaultProto).
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3. Return ObjectCreate(proto, internalSlotsList).
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9.1.15 GetPrototypeFromConstructor ( constructor, intrinsicDefaultProto )
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...
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3. Let proto be ? Get(constructor, "prototype").
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4. If Type(proto) is not Object, then
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a. Let realm be ? GetFunctionRealm(constructor).
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b. Let proto be realm's intrinsic object named intrinsicDefaultProto.
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5. Return proto.
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...
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features: [Reflect.construct]
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---*/
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var buffer = new ArrayBuffer(8);
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function newTarget() {}
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var proto = {};
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newTarget.prototype = proto;
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var sample = Reflect.construct(DataView, [buffer, 0], newTarget);
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assert.sameValue(sample.constructor, Object);
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assert.sameValue(Object.getPrototypeOf(sample), proto);
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