gatsby-remark-pre-content/index.js

Expose pre tag content in custom shortcode

"use strict";

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

function _iterableToArrayLimit(arr, i) { if (typeof Symbol === "undefined" || !(Symbol.iterator in Object(arr))) return; var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

var visit = require('unist-util-visit');

var qs = require('query-string');

module.exports = function gatsbyRemarkPreContent(_ref, options) {
  var markdownAST = _ref.markdownAST;
  visit(markdownAST, 'code', function (node, index) {
    var _split = (node.lang || '').split(':'),
        _split2 = _slicedToArray(_split, 2),
        language = _split2[0],
        params = _split2[1];

    var parsed = qs.parse(params);
    var expose = parsed.expose;

    if (expose === 'true') {
      var value = markdownAST.children[index].value;
      value = value.replace(/"/gm, '&quot;').replace(/`/gm, '\\`').replace(/\$/gm, '\\$');
      var customNode = {
        type: 'html',
        value: "\n            <precontent\n              content=\"".concat(value, "\"\n            >\n            </precontent>\n            ").trim()
      };
      markdownAST.children.splice(index, 0, customNode);
      parsed.expose = 'false';
    } else if (expose === 'false') {
      delete parsed.expose;
    }

    var newQuery = '';

    if (Object.keys(parsed).length) {
      newQuery = ":".concat(Object.keys(parsed).map(function (key) {
        return "".concat(key, "=").concat(parsed[key]);
      }).join('&'));
    }

    node.lang = language + newQuery;
  });
};