import { ExecutionContext, type ParseNode, PromiseCapabilityRecord, type AsyncBuiltinSteps } from '#self';
/** https://tc39.es/ecma262/#sec-async-function-objects */
/** https://tc39.es/ecma262/#sec-asyncblockstart */
export declare function AsyncBlockStart(promiseCapability: PromiseCapabilityRecord, asyncBody: ParseNode.AsyncBody | ParseNode.ExpressionBody | ParseNode.Module | AsyncBuiltinSteps, asyncContext: ExecutionContext): Generator<import("#self").EvaluatorYieldType, import("#self").UndefinedValue, import("#self").EvaluatorNextType>;
/** https://tc39.es/ecma262/#sec-async-functions-abstract-operations-async-function-start */
export declare function AsyncFunctionStart(promiseCapability: PromiseCapabilityRecord, asyncFunctionBody: ParseNode.AsyncBody | ParseNode.ExpressionBody | AsyncBuiltinSteps): Generator<import("#self").EvaluatorYieldType, void, import("#self").EvaluatorNextType>;
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