refactor: reuse undefined effect (#44010)
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@@ -841,17 +841,17 @@ export class Interpreter<R> {
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private customIterator(value: unknown, node: AstNode, allowAsync = true) {
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if (value instanceof CodeModeGenerator) {
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if (value.asynchronous && !allowAsync) return Effect.succeed(undefined)
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if (value.asynchronous && !allowAsync) return Effect.undefined
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return Effect.succeed({
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iterator: value,
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next: new GeneratorMethodReference(value, "next"),
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asynchronous: value.asynchronous,
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})
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}
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if (!isRecord(value) || isRuntimeReference(value)) return Effect.succeed(undefined)
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if (!isRecord(value) || isRuntimeReference(value)) return Effect.undefined
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const asyncMethod = allowAsync ? Reflect.get(value, AsyncIteratorSymbol) : undefined
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const method = asyncMethod ?? Reflect.get(value, IteratorSymbol)
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if (method === undefined || method === null) return Effect.succeed(undefined)
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if (method === undefined || method === null) return Effect.undefined
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const self = this
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return Effect.map(
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this.invokeCallable(this.requireIteratorMethod(method, "Iterator method", node), [], node),
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