hono/dist/cjs/utils/stream.js

Web framework built on Web Standards

"use strict";
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 stream_exports = {};
__export(stream_exports, {
  StreamingApi: () => StreamingApi
});
module.exports = __toCommonJS(stream_exports);
class StreamingApi {
  writer;
  encoder;
  writable;
  abortSubscribers = [];
  responseReadable;
  aborted = false;
  closed = false;
  constructor(writable, _readable) {
    this.writable = writable;
    this.writer = writable.getWriter();
    this.encoder = new TextEncoder();
    const reader = _readable.getReader();
    this.abortSubscribers.push(async () => {
      await reader.cancel();
    });
    this.responseReadable = new ReadableStream({
      async pull(controller) {
        const { done, value } = await reader.read();
        done ? controller.close() : controller.enqueue(value);
      },
      cancel: () => {
        this.abort();
      }
    });
  }
  async write(input) {
    try {
      if (typeof input === "string") {
        input = this.encoder.encode(input);
      }
      await this.writer.write(input);
    } catch {
    }
    return this;
  }
  async writeln(input) {
    await this.write(input + "\n");
    return this;
  }
  sleep(ms) {
    return new Promise((res) => setTimeout(res, ms));
  }
  async close() {
    try {
      await this.writer.close();
    } catch {
    }
    this.closed = true;
  }
  async pipe(body) {
    this.writer.releaseLock();
    await body.pipeTo(this.writable, { preventClose: true });
    this.writer = this.writable.getWriter();
  }
  onAbort(listener) {
    this.abortSubscribers.push(listener);
  }
  abort() {
    if (!this.aborted) {
      this.aborted = true;
      this.abortSubscribers.forEach((subscriber) => subscriber());
    }
  }
}
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  StreamingApi
});