preprocessData.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.
 *
 * @flow
 */

import {
  importFromChromeTimeline,
  Flamechart as SpeedscopeFlamechart,
} from '@elg/speedscope';
import type {TimelineEvent} from '@elg/speedscope';
import type {
  ErrorStackFrame,
  BatchUID,
  Flamechart,
  Milliseconds,
  NativeEvent,
  NetworkMeasure,
  Phase,
  ReactLane,
  ReactComponentMeasure,
  ReactComponentMeasureType,
  ReactMeasure,
  ReactMeasureType,
  TimelineData,
  SchedulingEvent,
  SuspenseEvent,
  Snapshot,
} from '../types';
import {
  REACT_TOTAL_NUM_LANES,
  SCHEDULING_PROFILER_VERSION,
  SNAPSHOT_MAX_HEIGHT,
} from '../constants';
import InvalidProfileError from './InvalidProfileError';
import {getBatchRange} from '../utils/getBatchRange';
import ErrorStackParser from 'error-stack-parser';

type MeasureStackElement = {
  type: ReactMeasureType,
  depth: number,
  measure: ReactMeasure,
  startTime: Milliseconds,
  stopTime?: Milliseconds,
};

type ProcessorState = {
  asyncProcessingPromises: Promise<any>[],
  batchUID: BatchUID,
  currentReactComponentMeasure: ReactComponentMeasure | null,
  internalModuleCurrentStackFrame: ErrorStackFrame | null,
  internalModuleStackStringSet: Set<string>,
  measureStack: MeasureStackElement[],
  nativeEventStack: NativeEvent[],
  nextRenderShouldGenerateNewBatchID: boolean,
  potentialLongEvents: Array<[NativeEvent, BatchUID]>,
  potentialLongNestedUpdate: SchedulingEvent | null,
// ... (1115 more lines)