cellxgene/server/utils.js

/* eslint-disable */
var chalk = require('chalk');

var friendlySyntaxErrorLabel = 'Syntax error:';

function isLikelyASyntaxError(message) {
  return message.indexOf(friendlySyntaxErrorLabel) !== -1;
}

function formatMessage(message) {
  return message
    .replace('Module build failed: SyntaxError:', friendlySyntaxErrorLabel)
    .replace(
      /Module not found: Error: Cannot resolve 'file' or 'directory'/,
      'Module not found:'
    )
    .replace(/^\s*at\s.*:\d+:\d+[\s\)]*\n/gm, '')
    .replace('./~/css-loader!./~/postcss-loader!', '');
}
var clearConsole = () => {
  process.stdout.write('\x1bc');
};

var formatStats = (stats, port) => {
  clearConsole();
  var hasErrors = stats.hasErrors();
  var hasWarnings = stats.hasWarnings();
  if (!hasErrors && !hasWarnings) {
    console.log(chalk.green('Compiled successfully!'));
    console.log();
    console.log('The app is running at http://localhost:' + port + '/');
    console.log();
    return;
  }

  var json = stats.toJson();
  var formattedErrors = json.errors.map(
    message => 'Error in ' + formatMessage(message)
  );
  var formattedWarnings = json.warnings.map(
    message => 'Warning in ' + formatMessage(message)
  );

  if (hasErrors) {
    console.log(chalk.red('Failed to compile.'));
    console.log();
    if (formattedErrors.some(isLikelyASyntaxError)) {
      formattedErrors = formattedErrors.filter(isLikelyASyntaxError);
    }
    formattedErrors.forEach(message => {
      console.log(message);
      console.log();
    });
    return;
  }

  if (hasWarnings) {
    console.log(chalk.yellow('Compiled with warnings.'));
    console.log();
    formattedWarnings.forEach(message => {
      console.log(message);
      console.log();
    });

    console.log('You may use special comments to disable some warnings.');
    console.log(
      'Use ' +
        chalk.yellow('// eslint-disable-next-line') +
        ' to ignore the next line.'
    );
    console.log(
      'Use ' +
        chalk.yellow('/* eslint-disable */') +
        ' to ignore all warnings in a file.'
    );
  }
};

module.exports = { formatStats: formatStats, clearConsole: clearConsole };