Function removeLinesBeforeExternalMatcherTrap

packages/jest-snapshot/src/utils.ts:42–54

(stack: string)

    : string;

export const removeLinesBeforeExternalMatcherTrap = (stack: string): string => {
  const lines = stack.split('\n');

  for (let i = 0; i < lines.length; i += 1) {
    // It's a function name specified in `packages/expect/src/index.ts`
    // for external custom matchers.
    if (lines[i].includes('__EXTERNAL_MATCHER_TRAP__')) {
      return lines.slice(i + 1).join('\n');
    }
  }

  return stack;
};

const escapeRegex = true;
const printFunctionName = false;