indexr/dist/modules/watch/index.js

Automated dynamic indexes for your ES6+ source code.

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.watchFiles = undefined;

var _chokidar = require('chokidar');

var _chokidar2 = _interopRequireDefault(_chokidar);

var _ensureArray = require('../../utils/ensureArray');

var _ensureArray2 = _interopRequireDefault(_ensureArray);

var _path = require('path');

var _path2 = _interopRequireDefault(_path);

var _throttle = require('lodash/throttle');

var _throttle2 = _interopRequireDefault(_throttle);

var _chainMap = require('../../utils/chainMap');

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var watchFiles = exports.watchFiles = function watchFiles(config) {
  return function () {
    for (var _len = arguments.length, fns = Array(_len), _key = 0; _key < _len; _key++) {
      fns[_key] = arguments[_key];
    }

    return function (next) {
      // Destructure vars
      var outputFilename = config.outputFilename;
      var modules = config.modules;
      var watchGlobs = config.watch;

      // Ignore the output files from the process to avoid infinite repeat

      var nullStringIfFalsy = function nullStringIfFalsy(value) {
        return value || '';
      };
      var addOutputFilename = function addOutputFilename(value) {
        return _path2.default.join(value, outputFilename);
      };
      var ignored = (0, _ensureArray2.default)(modules).map(nullStringIfFalsy).map(addOutputFilename);

      // Run once if watching was not required
      var watchFunc = _chainMap.chain.apply(undefined, fns);
      if (!watchGlobs) return watchFunc(next);

      // Watch glob might be true or a glob so provide a default
      var watchGlob = typeof watchGlobs === 'string' ? watchGlobs : '**/*';
      var handleWatchChange = (0, _throttle2.default)(watchFunc, 2000);

      // Run a watch
      _chokidar2.default.watch(watchGlob, { ignored: ignored })
      // TODO: performance rebuild only sub folders from the returnPath
      .on('all', function () {
        return handleWatchChange();
      });
    };
  };
};

exports.default = { watchFiles: watchFiles };