rollbar/src/react-native/transforms.js

Effortlessly track and debug errors in your JavaScript applications with Rollbar. This package includes advanced error tracking features and an intuitive interface to help you identify and fix issues more quickly.

var _ = require('../utility');
var scrub = require('../scrub');
var errorParser = require('../errorParser');

function baseData(item, options, callback) {
  var environment =
    (options.payload && options.payload.environment) || options.environment;
  var data = {
    timestamp: Math.round(item.timestamp / 1000),
    environment: item.environment || environment,
    level: item.level || 'error',
    platform: options.platform || 'client',
    language: 'javascript',
    framework: item.framework || options.framework,
    uuid: item.uuid,
    notifier: JSON.parse(JSON.stringify(options.notifier)),
    custom: item.custom,
  };

  if (options.codeVersion) {
    data.code_version = options.codeVersion;
  } else if (options.code_version) {
    data.code_version = options.code_version;
  }

  var props = Object.getOwnPropertyNames(item.custom || {});
  props.forEach(function (name) {
    if (!data.hasOwnProperty(name)) {
      data[name] = item.custom[name];
    }
  });

  item.data = data;
  callback(null, item);
}

function addMessageData(item, options, callback) {
  item.data = item.data || {};
  item.data.body = item.data.body || {};
  var message = item.message || 'Item sent with null or missing arguments.';
  item.data.body.message = {
    body: message,
  };
  callback(null, item);
}

function addErrorData(item, options, callback) {
  if (item.stackInfo) {
    item.data = item.data || {};
    item.data.body = item.data.body || {};
    item.data.body.trace = item.stackInfo;
  }
  callback(null, item);
}

function addBody(item, options, callback) {
  if (item.stackInfo) {
    addErrorData(item, options, callback);
  } else {
    addMessageData(item, options, callback);
  }
}

function handleItemWithError(item, options, callback) {
  if (!item.err) {
    return callback(null, item);
  }

  if (options.addErrorContext) {
    _.addErrorContext(item, [item.err]);
  }

  var err = item.err;
  var parsedError = errorParser.parse(err);
  var guess = errorParser.guessErrorClass(parsedError.message);
  var message = guess[1];
  var stackInfo = {
    frames: _buildFrames(parsedError.stack, options),
    exception: {
      class: _errorClass(parsedError.name, guess[0], options),
      message: message,
    },
  };
  if (err.description) {
    stackInfo.exception.description = String(err.description);
  }
  item.stackInfo = stackInfo;
  callback(null, item);
}

function scrubPayload(item, options, callback) {
  var scrubHeaders = options.scrubHeaders || [];
  var scrubFields = options.scrubFields || [];
  var scrubPaths = options.scrubPaths || [];
  scrubFields = scrubHeaders.concat(scrubFields);
  item.data = scrub(item.data, scrubFields, scrubPaths);
  callback(null, item);
}

/** Helpers **/

function _errorClass(name, guess, options) {
  if (name) {
    return name;
  } else if (options.guessErrorClass) {
    return guess;
  } else {
    return '<unknown>';
  }
}

function _buildFrames(stack, options) {
  if (!stack) {
    return [];
  }

  var frames = [];
  for (var i = 0; i < stack.length; ++i) {
    var stackFrame = stack[i];
    var filename = stackFrame.url ? _.sanitizeUrl(stackFrame.url) : '<unknown>';
    var frame = {
      filename: _rewriteFilename(filename, options),
      lineno: stackFrame.line || null,
      method:
        !stackFrame.func || stackFrame.func === '?'
          ? '[anonymous]'
          : stackFrame.func,
      colno: stackFrame.column,
    };
    frames.push(frame);
  }
  return frames;
}

function _rewriteFilename(filename, options) {
  var match = filename && filename.match && _matchFilename(filename, options);
  if (match) {
    return 'http://reactnativehost/' + match;
  } else {
    return 'http://reactnativehost/' + filename;
  }
}

function _matchFilename(filename, options) {
  var patterns = options.rewriteFilenamePatterns || [];
  var length = patterns.length || 0;

  for (var i = 0; i < length; i++) {
    var pattern = new RegExp(patterns[i]);
    var match = filename.match(pattern);
    if (match && match[1]) {
      return match[1];
    }
  }
  return null;
}

module.exports = {
  baseData: baseData,
  handleItemWithError: handleItemWithError,
  addBody: addBody,
  scrubPayload: scrubPayload,
  _matchFilename: _matchFilename, // to enable unit test
};