hataraku/dist/esm/utils/async.js

An autonomous coding agent for building AI-powered development tools. The name "Hataraku" (働く) means "to work" in Japanese.

// A helper that creates an async stream with push/end capabilities.
export function createAsyncStream() {
    const buffer = [];
    let finished = false;
    let resolver = null;
    const generator = {
        async next() {
            if (buffer.length > 0) {
                return { value: buffer.shift(), done: false };
            }
            if (finished) {
                return { value: undefined, done: true };
            }
            return new Promise(resolve => {
                resolver = resolve;
            });
        },
        async return() {
            finished = true;
            return { value: undefined, done: true };
        },
        async throw(err) {
            finished = true;
            return { value: undefined, done: true };
        },
        [Symbol.asyncIterator]() { return this; },
        // Implement dispose method without using Symbol.asyncDispose
        async dispose() {
            finished = true;
        }
    };
    const stream = {
        push(item) {
            if (resolver) {
                resolver({ value: item, done: false });
                resolver = null;
            }
            else {
                buffer.push(item);
            }
        },
        end() {
            finished = true;
            if (resolver) {
                resolver({ value: undefined, done: true });
                resolver = null;
            }
        }
    };
    return { ...generator, ...stream };
}
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