tests: run content tests on all MDX files inside ./puzzles

lib/utils/get-unique-elements-from-mdx-source.ts

@@ -0,0 +1,36 @@
+// -----------------------------------------------------------------------------
+// Constants
+// -----------------------------------------------------------------------------
+
+const P1 = /(_jsxs|_jsx)\(_components.[a-zA-Z-_0-9]+/g;
+const P2 = /(_jsxs|_jsx)\("[a-zA-Z-_0-9]+"/g;
+const P3 = /(_jsxs|_jsx)\([a-zA-Z-_0-9]+/g;
+export const JSX_ELEMENTS_PATTERN = new RegExp(`${P1.source}|${P2.source}|${P3.source}`, 'g');
+
+// -----------------------------------------------------------------------------
+// Function
+// -----------------------------------------------------------------------------
+
+const getUniqueElementsFromMDXSource = (mdxSource: string): string[] => {
+  const elements = mdxSource.match(JSX_ELEMENTS_PATTERN) ?? [];
+
+  return [
+    ...new Set(
+      [...new Set(elements)].map((e) => {
+        let e_ = e;
+        // Remove `_jsxs(` and `_jsx(` from the beginning of the string.
+        if (e.startsWith('_jsxs(')) e_ = e.substring(6);
+        else if (e.startsWith('_jsx(')) e_ = e.substring(5);
+
+        // Remove `"` from the beginning and end of the string or remove
+        // `_components.` from the beginning of the string.
+        if (e_.startsWith('"') && e_.endsWith('"')) e_ = e_.substring(1, e_.length - 1);
+        else if (e_.startsWith('_components.')) e_ = e_.substring(12);
+
+        return e_;
+      }),
+    ),
+  ];
+};
+
+export default getUniqueElementsFromMDXSource;

lib/utils/index.ts

@@ -1,4 +1,5 @@
+import getUniqueElementsFromMDXSource from './get-unique-elements-from-mdx-source';
 import readFile from './read-file';
 import serializeToMDXSource from './serialize-to-mdx-source';
 
-export { readFile, serializeToMDXSource };
+export { getUniqueElementsFromMDXSource, readFile, serializeToMDXSource };

package.json

@@ -25,6 +25,7 @@
   "dependencies": {
     "@mdx-js/react": "^3.0.0",
     "@types/react": "^18.2.41",
+    "glob": "^10.3.10",
     "next-mdx-remote": "^4.4.1",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",