atom-nuclide/pkg/nuclide-format-js-common/lib/utils/getJSXIdentifiers.js

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

/*
 * Copyright (c) 2015-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the license found in the LICENSE file in
 * the root directory of this source tree.
 */

var _jscodeshift2;

function _jscodeshift() {
  return _jscodeshift2 = _interopRequireDefault(require('jscodeshift'));
}

var _StringUtils2;

function _StringUtils() {
  return _StringUtils2 = require('./StringUtils');
}

// TODO: make this configurable somehow, we probably don't want to explicitly
// list out all of the lowercase html tags that are built-in
var LOWER_CASE_WHITE_LIST = new Set(['fbt']);

/**
 * This will get a list of identifiers for JSXElements in the AST
 */
function getJSXIdentifiers(root) {
  var ids = new Set();
  root
  // There should be an opening element for every single closing element so
  // we can just look for opening ones
  .find((_jscodeshift2 || _jscodeshift()).default.JSXOpeningElement).filter(function (path) {
    return (_jscodeshift2 || _jscodeshift()).default.JSXIdentifier.check(path.node.name);
  }).forEach(function (path) {
    var name = path.node.name.name;
    // TODO: should this be here or in addMissingRequires?
    if (!(0, (_StringUtils2 || _StringUtils()).isLowerCase)(name) || LOWER_CASE_WHITE_LIST.has(name)) {
      ids.add(name);
    }
  });
  return ids;
}

module.exports = getJSXIdentifiers;