chore: work on depgraph

tests/dependency-graph.test.js

@@ -0,0 +1,27 @@
+import { describe, it } from 'node:test';
+import assert from 'node:assert/strict';
+
+describe('Dependency Graph', () => {
+
+  const withFrontmatter = (str, data) => `---json\n${JSON.stringify(data)}\n---\n${str}`
+
+  function setupVFS(files) {
+    const vFS = new Map();
+    for (const [file, content] of Object.entries(files)) {
+      vFS.set(file, content);
+    }
+    return (...paths) => {
+      const resource = path.normalize(path.join(...paths));
+      return vFS.get(resource);
+    }
+  }
+
+
+  it('should return a map, mapping each dependants per file', () => {
+    const resolve = setupVFS({
+      'index.html': withFrontmatter('# {{ title }}', {title: 'Hello', layout: 'base.html'})
+    });
+
+
+  });
+});