chore: add jest global variables (#42573)

tools/challenge-parser/parser/plugins/utils/between-headings.test.js

@@ -1,4 +1,3 @@
-/* global expect*/
 const isArray = require('lodash/isArray');
 const find = require('unist-util-find');
 const { root } = require('mdast-builder');

tools/challenge-parser/parser/plugins/utils/get-id.test.js

@@ -1,4 +1,3 @@
-/* global expect*/
 const getId = require('./get-id');
 const idNode = require('./__fixtures__/id-node.json');
 const imageNode = require('./__fixtures__/image-node.json');

tools/challenge-parser/parser/plugins/utils/mdast-to-html.test.js

@@ -1,4 +1,3 @@
-/* global expect*/
 const mdastToHTML = require('./mdast-to-html');
 const mdastMixedNodes = require('./__fixtures__/mdast-mixed-nodes.json');
 const mdastWithEmNode = require('./__fixtures__/mdast-with-em.json');