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Chris Tate
54f12d73dc
- A built-in typed-array constructor set as a view's `constructor` is its own species, as the getter it inherits from %TypedArray% returns it: `u8.constructor = Float64Array; u8.map(f)` makes a Float64Array. An own Symbol.species on the constructor still wins. - TypedArray.prototype.slice with a species constructor creates the result first and then copies the source's current elements, up to its current length: a constructor that changes the source is seen. - Object.defineProperty on a typed-array element reads the descriptor as ToPropertyDescriptor does, through its getters and in its order, and throws a TypeError for a primitive descriptor or an accessor with a value. The generic object path shares the same reader.