ai-utils.js/model-function/generate-text/AsyncQueue.js

Build AI applications, chatbots, and agents with JavaScript and TypeScript.

/**
 * @internal
 */
export class AsyncQueue {
    constructor() {
        Object.defineProperty(this, "queue", {
            enumerable: true,
            configurable: true,
            writable: true,
            value: void 0
        });
        Object.defineProperty(this, "resolvers", {
            enumerable: true,
            configurable: true,
            writable: true,
            value: []
        });
        Object.defineProperty(this, "closed", {
            enumerable: true,
            configurable: true,
            writable: true,
            value: void 0
        });
        this.queue = [];
        this.resolvers = [];
        this.closed = false;
    }
    push(value) {
        if (this.closed) {
            throw new Error("Pushing to a closed queue");
        }
        const resolve = this.resolvers.shift();
        if (resolve) {
            resolve({ value, done: false });
        }
        else {
            this.queue.push(value);
        }
    }
    close() {
        while (this.resolvers.length) {
            const resolve = this.resolvers.shift();
            resolve?.({ value: undefined, done: true });
        }
        this.closed = true;
    }
    [Symbol.asyncIterator]() {
        return {
            next: () => {
                if (this.queue.length > 0) {
                    return Promise.resolve({ value: this.queue.shift(), done: false });
                }
                else if (this.closed) {
                    return Promise.resolve({ value: undefined, done: true });
                }
                else {
                    return new Promise((resolve) => this.resolvers.push(resolve));
                }
            },
        };
    }
}