feat: renamed files/folders to lowercase

validation/guide-folder-checks/frontmatter-check.js

@@ -0,0 +1,23 @@
+const matter = require('gray-matter');
+const _ = require('lodash');
+const dedent = require('dedent');
+
+const frontmatterCheck = (fullPath, isTranslation, fileContent) => {
+  const { data: frontmatter } = matter(fileContent);
+  let errors = [];
+  if (!frontmatter || _.isEmpty(frontmatter) || !frontmatter.title) {
+    errors.push({
+      msg: `Misplaced or missing \`title\` keyword in the front matter block. Review the [style guide](https://github.com/freeCodeCamp/freeCodeCamp/blob/master/docs/style-guide-for-guide-articles.md#title) for more details.`,
+      fullPath
+    });
+  }
+  if (isTranslation && !frontmatter.localeTitle) {
+    errors.push({
+      msg: `Missing \`localeTitle\` keyword in the front matter block. Review the [style guide](https://github.com/freeCodeCamp/freeCodeCamp/blob/master/docs/style-guide-for-guide-articles.md#title) for more details.`,
+      fullPath
+    });
+  }
+  return errors;
+};
+
+module.exports = { frontmatterCheck };