surma
d44f1d9677
Checkpoint before integration and package validation. Assisted-by: SurmAgent:unknown [read] [edit] [bash]
24 lines
796 B
JavaScript
24 lines
796 B
JavaScript
import { assert, assertArrayEquals } from "./assert.js";
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/* Array.fromAsync must create its elements with CreateDataPropertyOrThrow,
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i.e. enumerable own data properties, so they show up in Object.keys and
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spreads. */
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/* array-like source */
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{
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const arr = await Array.fromAsync([10, 20, 30]);
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assertArrayEquals(Object.keys(arr), ["0", "1", "2"]);
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const d = Object.getOwnPropertyDescriptor(arr, 0);
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assert(d.enumerable, true);
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assert(d.writable, true);
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assert(d.configurable, true);
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}
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/* async-iterable source */
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{
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const iter = { async *[Symbol.asyncIterator]() { yield "a"; yield "b"; } };
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const arr = await Array.fromAsync(iter);
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assertArrayEquals(Object.keys(arr), ["0", "1"]);
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assert(Object.getOwnPropertyDescriptor(arr, 0).enumerable, true);
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}
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