chore: install cssbundling rails and set up compilation

spec/dummy/node_modules/yaml/dist/doc/anchors.d.ts

@@ -0,0 +1,24 @@
+import type { Node } from '../nodes/Node.js';
+import type { Document } from './Document.js';
+/**
+ * Verify that the input string is a valid anchor.
+ *
+ * Will throw on errors.
+ */
+export declare function anchorIsValid(anchor: string): true;
+export declare function anchorNames(root: Document<Node, boolean> | Node): Set<string>;
+/** Find a new anchor name with the given `prefix` and a one-indexed suffix. */
+export declare function findNewAnchor(prefix: string, exclude: Set<string>): string;
+export declare function createNodeAnchors(doc: Document<Node, boolean>, prefix: string): {
+    onAnchor: (source: unknown) => string;
+    /**
+     * With circular references, the source node is only resolved after all
+     * of its child nodes are. This is why anchors are set only after all of
+     * the nodes have been created.
+     */
+    setAnchors: () => void;
+    sourceObjects: Map<unknown, {
+        anchor: string | null;
+        node: Node | null;
+    }>;
+};