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node_modules/jest-worker/build/workers/ChildProcessWorker.d.ts

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+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+/// <reference types="node" />
+import { WorkerInterface, ChildMessage, OnEnd, OnStart, WorkerOptions, ParentMessage } from '../types';
+/**
+ * This class wraps the child process and provides a nice interface to
+ * communicate with. It takes care of:
+ *
+ *  - Re-spawning the process if it dies.
+ *  - Queues calls while the worker is busy.
+ *  - Re-sends the requests if the worker blew up.
+ *
+ * The reason for queueing them here (since childProcess.send also has an
+ * internal queue) is because the worker could be doing asynchronous work, and
+ * this would lead to the child process to read its receiving buffer and start a
+ * second call. By queueing calls here, we don't send the next call to the
+ * children until we receive the result of the previous one.
+ *
+ * As soon as a request starts to be processed by a worker, its "processed"
+ * field is changed to "true", so that other workers which might encounter the
+ * same call skip it.
+ */
+export default class ChildProcessWorker implements WorkerInterface {
+    private _child;
+    private _options;
+    private _onProcessEnd;
+    private _fakeStream;
+    private _request;
+    private _retries;
+    private _stderr;
+    private _stdout;
+    constructor(options: WorkerOptions);
+    initialize(): void;
+    private _shutdown;
+    onMessage(response: ParentMessage): void;
+    onExit(exitCode: number): void;
+    send(request: ChildMessage, onProcessStart: OnStart, onProcessEnd: OnEnd): void;
+    getWorkerId(): number;
+    getStdout(): NodeJS.ReadableStream | null;
+    getStderr(): NodeJS.ReadableStream | null;
+    private _getFakeStream;
+}
+//# sourceMappingURL=ChildProcessWorker.d.ts.map