botframework-webchat-component/lib/Utils/addTargetBlankToHyperlinksMarkdown.js

React component of botframework-webchat

"use strict";

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

var _updateMarkdownAttrs = _interopRequireDefault(require("./updateMarkdownAttrs"));

var _walkMarkdownTokens = _interopRequireDefault(require("./walkMarkdownTokens"));

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

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function addTargetBlankToHyperlinksMarkdown(tokens) {
  return (0, _walkMarkdownTokens.default)(tokens, function (token) {
    switch (token.type) {
      case 'link_open':
        token = (0, _updateMarkdownAttrs.default)(token, function (attrs) {
          return (// Adds only for external links, e.g. https://, data:
            // Don't add for internal links, e.g. #ref-1, ?q=doc
            /^[0-9A-Z_a-z]/.test(attrs.href) ? _objectSpread(_objectSpread({}, attrs), {}, {
              rel: 'noopener noreferrer',
              target: '_blank'
            }) : attrs
          );
        });
        break;

      default:
        break;
    }

    return token;
  });
}
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