ReactFlightServer-test.js — react Source File

Source Code

/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @emails react-core
 * @jest-environment node
 */

'use strict';

if (typeof Blob === 'undefined') {
  global.Blob = require('buffer').Blob;
}
if (typeof File === 'undefined' || typeof FormData === 'undefined') {
  global.File = require('undici').File;
  global.FormData = require('undici').FormData;
}

function normalizeCodeLocInfo(str) {
  return (
    str &&
    str.replace(/^ +(?:at|in) ([\S]+)[^\n]*/gm, function (m, name) {
      const dot = name.lastIndexOf('.');
      if (dot !== -1) {
        name = name.slice(dot + 1);
      }
      return '    in ' + name + (/\d/.test(m) ? ' (at **)' : '');
    })
  );
}

let ReactServer;
let ReactNoopFlightServer;
let Scheduler;
let advanceTimersByTime;
let assertLog;
let assertConsoleErrorDev;

describe('ReactFlight', () => {
  beforeEach(() => {
    // Mock performance.now for timing tests
    let time = 0;
    advanceTimersByTime = timeMS => {
      time += timeMS;
      jest.advanceTimersByTime(timeMS);
    };
    const now = jest.fn().mockImplementation(() => {
      return time++;
    });
    Object.defineProperty(performance, 'timeOrigin', {
      value: time,
      configurable: true,
    });
    Object.defineProperty(performance, 'now', {
      value: now,
      configurable: true,
    });

// ... (141 more lines)