chore: remove old parser

tools/challenge-parser/parser/plugins/add-tests.js

@@ -0,0 +1,32 @@
+const chunk = require('lodash/chunk');
+const getAllBetween = require('./utils/between-headings');
+const mdastToHtml = require('./utils/mdast-to-html');
+
+function plugin() {
+  return transformer;
+
+  function transformer(tree, file) {
+    const hintNodes = getAllBetween(tree, '--hints--');
+    if (hintNodes.length % 2 !== 0)
+      throw Error('Tests must be in (text, ```testString```) order');
+
+    const tests = chunk(hintNodes, 2).map(getTest);
+    file.data.tests = tests;
+  }
+}
+
+function getTest(hintNodes) {
+  const [textNode, testStringNode] = hintNodes;
+  const text = mdastToHtml([textNode]);
+  const testString = testStringNode.value;
+
+  if (!text) throw Error('text is missing from hint');
+  // stub tests (i.e. text, but no testString) are allowed, but the md must
+  // have a code block, even if it is empty.
+  if (!testString && testString !== '')
+    throw Error('testString (code block) is missing from hint');
+
+  return { text, testString };
+}
+
+module.exports = plugin;