feat(experimental): partial rebuilds (#716)

quartz/plugins/emitters/assets.ts

@@ -3,6 +3,7 @@ import { QuartzEmitterPlugin } from "../types"
 import path from "path"
 import fs from "fs"
 import { glob } from "../../util/glob"
+import DepGraph from "../../depgraph"
 
 export const Assets: QuartzEmitterPlugin = () => {
   return {
@@ -10,6 +11,24 @@ export const Assets: QuartzEmitterPlugin = () => {
     getQuartzComponents() {
       return []
     },
+    async getDependencyGraph(ctx, _content, _resources) {
+      const { argv, cfg } = ctx
+      const graph = new DepGraph<FilePath>()
+
+      const fps = await glob("**", argv.directory, ["**/*.md", ...cfg.configuration.ignorePatterns])
+
+      for (const fp of fps) {
+        const ext = path.extname(fp)
+        const src = joinSegments(argv.directory, fp) as FilePath
+        const name = (slugifyFilePath(fp as FilePath, true) + ext) as FilePath
+
+        const dest = joinSegments(argv.output, name) as FilePath
+
+        graph.addEdge(src, dest)
+      }
+
+      return graph
+    },
     async emit({ argv, cfg }, _content, _resources): Promise<FilePath[]> {
       // glob all non MD/MDX/HTML files in content folder and copy it over
       const assetsPath = argv.output