parseStackTrace.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 type {ReactStackTrace, ReactFunctionLocation} from 'shared/ReactTypes';

function parseStackTraceFromChromeStack(
  stack: string,
  skipFrames: number,
): ReactStackTrace {
  if (stack.startsWith('Error: react-stack-top-frame\n')) {
    // V8's default formatting prefixes with the error message which we
    // don't want/need.
    stack = stack.slice(29);
  }
  let idx = stack.indexOf('react_stack_bottom_frame');
  if (idx === -1) {
    idx = stack.indexOf('react-stack-bottom-frame');
  }
  if (idx !== -1) {
    idx = stack.lastIndexOf('\n', idx);
  }
  if (idx !== -1) {
    // Cut off everything after the bottom frame since it'll be internals.
    stack = stack.slice(0, idx);
  }
  const frames = stack.split('\n');
  const parsedFrames: ReactStackTrace = [];
  // We skip top frames here since they may or may not be parseable but we
  // want to skip the same number of frames regardless. I.e. we can't do it
  // in the caller.
  for (let i = skipFrames; i < frames.length; i++) {
    const parsed = chromeFrameRegExp.exec(frames[i]);
    if (!parsed) {
      continue;
    }
    let name = parsed[1] || '';
    let isAsync = parsed[8] === 'async ';
    if (name === '<anonymous>') {
      name = '';
    } else if (name.startsWith('async ')) {
      name = name.slice(5);
      isAsync = true;
    }
    let filename = parsed[2] || parsed[5] || '';
    if (filename === '<anonymous>') {
      filename = '';
    }
    const line = +(parsed[3] || parsed[6] || 0);
    const col = +(parsed[4] || parsed[7] || 0);
    parsedFrames.push([name, filename, line, col, 0, 0, isAsync]);
  }
  return parsedFrames;
}
// ... (307 more lines)