Function formatLines

packages/jest-snapshot/src/__tests__/printSnapshot.test.ts:150–162

(chalkInstance: chalk.Chalk)

  // Simulate comparison lines from printSnapshotAndReceived.
  const formatLines = (chalkInstance: chalk.Chalk) => {
    const aColor = getSnapshotColorForChalkInstance(chalkInstance);
    const bColor = getReceivedColorForChalkInstance(chalkInstance);
    const cColor = chalkInstance.dim;
    const changeLineTrailingSpaceColor = noColor;
    const commonLineTrailingSpaceColor = chalkInstance.bgYellow;

    return [
      aColor(`- delete 1${changeLineTrailingSpaceColor(' ')}`),
      cColor(`  common 2${commonLineTrailingSpaceColor('  ')}`),
      bColor('+ insert 0'),
    ].join('\n');
  };

  const expected0 = '- delete 1 \n  common 2  \n+ insert 0';
  const expected1 =