neat-stack.js

neat-stack.js

import cleanStack from 'clean-stack';

// dims non-useful log lines in stack traces
const neatStack = (colorize, stack) => {
  // add parts of stack trace lines here that should be ignored
  const regexParts = [
    '(node_modules)',
    '(WEBPACK_IMPORTED)',
    '(next_tick.js)',
    '(domain.js)',
    '(timers.js)',
    '(overloadSequlizeFind)',
    '(Array.)',
    '(at new Promise)',
    '(_next)',
    '(_callee)',
    '(__webpack_require__)',
  ].join('|');
  const internalStackRegex = new RegExp(`at.*${regexParts}`);
  const cleanedStack = cleanStack(String(stack));

  const stackLines = cleanedStack.split('\n');
  const title = R.head(stackLines);

  const colorizedStackLines = R.pipe(
    R.tail,
    R.map(line =>
      line.match(internalStackRegex) || line.match('From previous event')
        ? chalk.dim(line)
        : colorize(line),
    ),
    R.join('\n'),
  )(stackLines);

  return colorize(`${title}\n${colorizedStackLines}`);
};