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41 lines
1.4 KiB
Plaintext
41 lines
1.4 KiB
Plaintext
// Copyright (C) 2019 Kubilay Kahveci (Bloomberg LP). 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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desc: Private settters are installed "when super returns" and no earlier (call in field initializer)
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info: |
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SuperCall: super Arguments
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1. Let newTarget be GetNewTarget().
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2. If newTarget is undefined, throw a ReferenceError exception.
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3. Let func be ? GetSuperConstructor().
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4. Let argList be ArgumentListEvaluation of Arguments.
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5. ReturnIfAbrupt(argList).
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6. Let result be ? Construct(func, argList, newTarget).
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7. Let thisER be GetThisEnvironment( ).
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8. Let F be thisER.[[FunctionObject]].
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9. Assert: F is an ECMAScript function object.
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10. Perform ? InitializeInstanceElements(result, F).
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EDITOR'S NOTE:
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Private fields are added to the object one by one, interspersed with
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evaluation of the initializers, following the construction of the
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receiver. These semantics allow for a later initializer to refer to
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a previous private field.
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template: default
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features: [class-methods-private, class-fields-public]
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---*/
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//- elements
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f = this.g();
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//- assertions
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class D extends C {
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g() { this.#m = 42; }
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set #m(val) {}
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}
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assert(D.prototype.hasOwnProperty('g'));
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assert.throws(TypeError, function() {
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var d = new D();
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}, 'private setters are not installed before super returns');
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