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backend/node_modules/hono/dist/utils/stream.js

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+// src/utils/stream.ts
+var StreamingApi = class {
+  writer;
+  encoder;
+  writable;
+  abortSubscribers = [];
+  responseReadable;
+  /**
+   * Whether the stream has been aborted.
+   */
+  aborted = false;
+  /**
+   * Whether the stream has been closed normally.
+   */
+  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 the stream.
+   * You can call this method when stream is aborted by external event.
+   */
+  abort() {
+    if (!this.aborted) {
+      this.aborted = true;
+      this.abortSubscribers.forEach((subscriber) => subscriber());
+    }
+  }
+};
+export {
+  StreamingApi
+};