@genkit-ai/core
Version:
Genkit AI framework core libraries.
132 lines • 3.22 kB
JavaScript
;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
for (var name in all)
__defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
if (from && typeof from === "object" || typeof from === "function") {
for (let key of __getOwnPropNames(from))
if (!__hasOwnProp.call(to, key) && key !== except)
__defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
}
return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
var async_exports = {};
__export(async_exports, {
AsyncTaskQueue: () => AsyncTaskQueue,
Channel: () => Channel,
LazyPromise: () => LazyPromise,
createTask: () => createTask,
lazy: () => lazy
});
module.exports = __toCommonJS(async_exports);
function createTask() {
let resolve, reject;
const promise = new Promise(
(res, rej) => [resolve, reject] = [res, rej]
);
return {
resolve,
reject,
promise
};
}
class Channel {
ready = createTask();
buffer = [];
err = null;
send(value) {
this.buffer.push(value);
this.ready.resolve();
}
close() {
this.buffer.push(null);
this.ready.resolve();
}
error(err) {
this.err = err;
this.ready.reject(err);
}
[Symbol.asyncIterator]() {
return {
next: async () => {
if (this.err) {
throw this.err;
}
if (!this.buffer.length) {
await this.ready.promise;
}
const value = this.buffer.shift();
if (!this.buffer.length) {
this.ready = createTask();
}
return {
value,
done: !value
};
}
};
}
}
class LazyPromise {
executor;
promise;
constructor(executor) {
this.executor = executor;
}
then(onfulfilled, onrejected) {
this.promise ??= new Promise(this.executor);
return this.promise.then(onfulfilled, onrejected);
}
}
function lazy(fn) {
return new LazyPromise((resolve, reject) => {
try {
resolve(fn());
} catch (e) {
reject(e);
}
});
}
class AsyncTaskQueue {
last = Promise.resolve();
options;
constructor(options) {
this.options = options || {};
}
/**
* Adds a task to the queue.
* The task will be executed when its turn comes up in the queue.
* @param task A function that returns a value or a PromiseLike.
*/
enqueue(task) {
if (this.options.stopOnError) {
this.last = this.last.then(() => lazy(task)).then((res) => res);
} else {
this.last = this.last.catch(() => {
}).then(() => lazy(task)).then((res) => res);
}
this.last.catch(() => {
});
}
/**
* Waits for all tasks currently in the queue to complete.
*/
async merge() {
await this.last;
}
}
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
AsyncTaskQueue,
Channel,
LazyPromise,
createTask,
lazy
});
//# sourceMappingURL=async.js.map