chore: remove old parser

tools/challenge-parser/solution-to-data.js

@@ -0,0 +1,55 @@
+const visit = require('unist-util-visit');
+const { selectAll } = require('hast-util-select');
+
+const { sectionFilter } = require('./utils');
+const { createCodeGetter, defaultFile } = require('./challengeSeed-to-data');
+const { isEmpty } = require('lodash');
+
+const solutionRE = /(.+)-solution$/;
+
+function indexByKey(obj) {
+  return { [obj.key]: { ...obj } };
+}
+
+function createPlugin() {
+  return function transformer(tree, file) {
+    function visitor(node) {
+      if (sectionFilter(node, 'solution')) {
+        // fallback for single-file challenges
+        const rawSolutions = selectAll('code', node).map(element => ({
+          lang: element.properties.className[0].split('-')[1],
+          contents: element.children[0].value
+        }));
+
+        const solutionFiles = {};
+
+        const codeDivs = selectAll('div', node);
+        const solutionContainers = codeDivs.filter(({ properties: { id } }) =>
+          solutionRE.test(id)
+        );
+        solutionContainers.forEach(
+          createCodeGetter('contents', solutionRE, solutionFiles)
+        );
+
+        const solutionsAsFiles = rawSolutions
+          .map(({ lang, contents }) => ({
+            ...defaultFile(lang),
+            contents
+          }))
+          .map(indexByKey);
+
+        const solutions = isEmpty(solutionFiles)
+          ? solutionsAsFiles
+          : [solutionFiles];
+
+        file.data = {
+          ...file.data,
+          solutions
+        };
+      }
+    }
+    visit(tree, 'element', visitor);
+  };
+}
+
+module.exports = createPlugin;