whole_func_string: function formatMessage(message, isError) {
    var lines = message.split('\n');
  
    if (lines.length > 2 && lines[1] === '') {
      // Remove extra newline.
      lines.splice(1, 1);
    }
  
    // Remove webpack-specific loader notation from filename.
    // Before:
    // ./~/css-loader!./~/postcss-loader!./src/App.css
    // After:
    // ./src/App.css
    if (lines[0].lastIndexOf('!') !== -1) {
      lines[0] = lines[0].substr(lines[0].lastIndexOf('!') + 1);
    }
  
    lines = lines.filter(function (line) {
      // Webpack adds a list of entry points to warning messages:
      //  @ ./src/index.js
      //  @ multi react-scripts/~/react-dev-utils/webpackHotDevClient.js ...
      // It is misleading (and unrelated to the warnings) so we clean it up.
      // It is only useful for syntax errors but we have beautiful frames for them.
      return line.indexOf(' @ ') !== 0;
    });
  
    // line #0 is filename
    // line #1 is the main error message
    if (!lines[0] || !lines[1]) {
      return lines.join('\n');
    }
  
    // Cleans up verbose "module not found" messages for files and packages.
    if (lines[1].indexOf('Module not found: ') === 0) {
      lines = [lines[0],
      // Clean up message because "Module not found: " is descriptive enough.
      lines[1].replace('Cannot resolve \'file\' or \'directory\' ', '').replace('Cannot resolve module ', '').replace('Error: ', '').replace('[CaseSensitivePathsPlugin] ', '')];
    }
  
    // Cleans up syntax error messages.
    if (lines[1].indexOf('Module build failed: ') === 0) {
      lines[1] = lines[1].replace('Module build failed: SyntaxError:', friendlySyntaxErrorLabel);
    }
  
    // Clean up export errors.
    // TODO: we should really send a PR to Webpack for this.
    var exportError = /\s*(.+?)\s*(")?export '(.+?)' was not found in '(.+?)'/;
    if (lines[1].match(exportError)) {
      lines[1] = lines[1].replace(exportError, '$1 \'$4\' does not contain an export named \'$3\'.');
    }
  
    lines[0] = colors.inverse(lines[0]);
  
    // Reassemble the message.
    message = lines.map(function (line) {
      if (line.indexOf('vue-template-compiler must be installed as a peer dependency') > -1) {
        return 'You need to install "vue-template-compiler" alongside "vue" in your project.'
      }
      return line
    }).join('\n');
    // Internal stacks are generally useless so we strip them... with the
    // exception of:
    // 1: stacks containing `webpack:` because they're normally
    // from user code generated by WebPack. For more information see
    // https://github.com/facebookincubator/create-react-app/pull/1050
    // 2: from eval-loader
    var isEvalLoaderError = /webpack\/eval-loader\.js/.exec(lines[1])
    if (!isEvalLoaderError) {
      message = message.replace(/^\s*at\s((?!webpack:).)*:\d+:\d+[\s)]*(\n|$)/gm, ''); // at ... ...:x:y
    }
  
    return message.trim();
  }
func_code_string: function formatMessage(message, isError) {
    var lines = message.split('\n');
  
    if (lines.length > 2 && lines[1] === '') {
      // Remove extra newline.
      lines.splice(1, 1);
    }
  
    // Remove webpack-specific loader notation from filename.
    // Before:
    // ./~/css-loader!./~/postcss-loader!./src/App.css
    // After:
    // ./src/App.css
    if (lines[0].lastIndexOf('!') !== -1) {
      lines[0] = lines[0].substr(lines[0].lastIndexOf('!') + 1);
    }
  
    lines = lines.filter(function (line) {
      // Webpack adds a list of entry points to warning messages:
      //  @ ./src/index.js
      //  @ multi react-scripts/~/react-dev-utils/webpackHotDevClient.js ...
      // It is misleading (and unrelated to the warnings) so we clean it up.
      // It is only useful for syntax errors but we have beautiful frames for them.
      return line.indexOf(' @ ') !== 0;
    });
  
    // line #0 is filename
    // line #1 is the main error message
    if (!lines[0] || !lines[1]) {
      return lines.join('\n');
    }
  
    // Cleans up verbose "module not found" messages for files and packages.
    if (lines[1].indexOf('Module not found: ') === 0) {
      lines = [lines[0],
      // Clean up message because "Module not found: " is descriptive enough.
      lines[1].replace('Cannot resolve \'file\' or \'directory\' ', '').replace('Cannot resolve module ', '').replace('Error: ', '').replace('[CaseSensitivePathsPlugin] ', '')];
    }
  
    // Cleans up syntax error messages.
    if (lines[1].indexOf('Module build failed: ') === 0) {
      lines[1] = lines[1].replace('Module build failed: SyntaxError:', friendlySyntaxErrorLabel);
    }
  
    // Clean up export errors.
    // TODO: we should really send a PR to Webpack for this.
    var exportError = /\s*(.+?)\s*(")?export '(.+?)' was not found in '(.+?)'/;
    if (lines[1].match(exportError)) {
      lines[1] = lines[1].replace(exportError, '$1 \'$4\' does not contain an export named \'$3\'.');
    }
  
    lines[0] = colors.inverse(lines[0]);
  
    // Reassemble the message.
    message = lines.map(function (line) {
      if (line.indexOf('vue-template-compiler must be installed as a peer dependency') > -1) {
        return 'You need to install "vue-template-compiler" alongside "vue" in your project.'
      }
      return line
    }).join('\n');
    // Internal stacks are generally useless so we strip them... with the
    // exception of:
    // 1: stacks containing `webpack:` because they're normally
    // from user code generated by WebPack. For more information see
    // https://github.com/facebookincubator/create-react-app/pull/1050
    // 2: from eval-loader
    var isEvalLoaderError = /webpack\/eval-loader\.js/.exec(lines[1])
    if (!isEvalLoaderError) {
      message = message.replace(/^\s*at\s((?!webpack:).)*:\d+:\d+[\s)]*(\n|$)/gm, ''); // at ... ...:x:y
    }
  
    return message.trim();
  }
func_documentation_string: Cleans up webpack error messages. eslint-disable-next-line no-unused-vars