Function createStackParser

packages/core/src/utils/stacktrace.ts:19–64

(...parsers: StackLineParser[])

 *
 */
export function createStackParser(...parsers: StackLineParser[]): StackParser {
  const sortedParsers = parsers.sort((a, b) => a[0] - b[0]).map(p => p[1]);

  return (stack: string, skipFirstLines: number = 0, framesToPop: number = 0): StackFrame[] => {
    const frames: StackFrame[] = [];
    const lines = stack.split('\n');

    for (let i = skipFirstLines; i < lines.length; i++) {
      let line = lines[i] as string;
      // Truncate lines over 1kb because many of the regular expressions use
      // backtracking which results in run time that increases exponentially
      // with input size. Huge strings can result in hangs/Denial of Service:
      // https://github.com/getsentry/sentry-javascript/issues/2286
      if (line.length > 1024) {
        line = line.slice(0, 1024);
      }

      // https://github.com/getsentry/sentry-javascript/issues/5459
      // Remove webpack (error: *) wrappers
      const cleanedLine = WEBPACK_ERROR_REGEXP.test(line) ? line.replace(WEBPACK_ERROR_REGEXP, '$1') : line;

      // https://github.com/getsentry/sentry-javascript/issues/7813
      // Skip Error: lines
      // Using includes() instead of a regex to avoid O(n²) backtracking on long lines
      // https://github.com/getsentry/sentry-javascript/issues/20052
      if (cleanedLine.includes('Error: ')) {
        continue;
      }

      for (const parser of sortedParsers) {
        const frame = parser(cleanedLine);

        if (frame) {
          frames.push(frame);
          break;
        }
      }

      if (frames.length >= STACKTRACE_FRAME_LIMIT + framesToPop) {
        break;
      }
    }

    return stripSentryFramesAndReverse(frames.slice(framesToPop));
  };
}

/**
 * Gets a stack parser implementation from Options.stackParser