feat(experimental): partial rebuilds (#716)

quartz/plugins/emitters/contentIndex.ts

@@ -7,6 +7,7 @@ import { QuartzEmitterPlugin } from "../types"
 import { toHtml } from "hast-util-to-html"
 import { write } from "./helpers"
 import { i18n } from "../../i18n"
+import DepGraph from "../../depgraph"
 
 export type ContentIndex = Map<FullSlug, ContentDetails>
 export type ContentDetails = {
@@ -92,6 +93,26 @@ export const ContentIndex: QuartzEmitterPlugin<Partial<Options>> = (opts) => {
   opts = { ...defaultOptions, ...opts }
   return {
     name: "ContentIndex",
+    async getDependencyGraph(ctx, content, _resources) {
+      const graph = new DepGraph<FilePath>()
+
+      for (const [_tree, file] of content) {
+        const sourcePath = file.data.filePath!
+
+        graph.addEdge(
+          sourcePath,
+          joinSegments(ctx.argv.output, "static/contentIndex.json") as FilePath,
+        )
+        if (opts?.enableSiteMap) {
+          graph.addEdge(sourcePath, joinSegments(ctx.argv.output, "sitemap.xml") as FilePath)
+        }
+        if (opts?.enableRSS) {
+          graph.addEdge(sourcePath, joinSegments(ctx.argv.output, "index.xml") as FilePath)
+        }
+      }
+
+      return graph
+    },
     async emit(ctx, content, _resources) {
       const cfg = ctx.cfg.configuration
       const emitted: FilePath[] = []