Updated to Drupal 8.6.4, which is PHP 7.3 friendly. Also updated HTMLaw library....

[yaffs-website] / node_modules / grunt-legacy-util / node_modules / lodash / _metaMap.js

var WeakMap = require('./_WeakMap');

/** Used to store function metadata. */
var metaMap = WeakMap && new WeakMap;

module.exports = metaMap;