incremental all the things

quartz/plugins/emitters/contentPage.tsx

@@ -1,21 +1,50 @@
 import path from "path"
-import { visit } from "unist-util-visit"
-import { Root } from "hast"
-import { VFile } from "vfile"
 import { QuartzEmitterPlugin } from "../types"
 import { QuartzComponentProps } from "../../components/types"
 import HeaderConstructor from "../../components/Header"
 import BodyConstructor from "../../components/Body"
 import { pageResources, renderPage } from "../../components/renderPage"
 import { FullPageLayout } from "../../cfg"
-import { Argv } from "../../util/ctx"
-import { FilePath, isRelativeURL, joinSegments, pathToRoot } from "../../util/path"
+import { pathToRoot } from "../../util/path"
 import { defaultContentPageLayout, sharedPageComponents } from "../../../quartz.layout"
 import { Content } from "../../components"
 import chalk from "chalk"
 import { write } from "./helpers"
+import { BuildCtx } from "../../util/ctx"
+import { Node } from "unist"
+import { StaticResources } from "../../util/resources"
+import { QuartzPluginData } from "../vfile"
+
+async function processContent(
+  ctx: BuildCtx,
+  tree: Node,
+  fileData: QuartzPluginData,
+  allFiles: QuartzPluginData[],
+  opts: FullPageLayout,
+  resources: StaticResources,
+) {
+  const slug = fileData.slug!
+  const cfg = ctx.cfg.configuration
+  const externalResources = pageResources(pathToRoot(slug), resources)
+  const componentData: QuartzComponentProps = {
+    ctx,
+    fileData,
+    externalResources,
+    cfg,
+    children: [],
+    tree,
+    allFiles,
+  }
+
+  const content = renderPage(cfg, slug, componentData, opts, externalResources)
+  return write({
+    ctx,
+    content,
+    slug,
+    ext: ".html",
+  })
+}
 
-// TODO check for transclusions in partial rebuild
 export const ContentPage: QuartzEmitterPlugin<Partial<FullPageLayout>> = (userOpts) => {
   const opts: FullPageLayout = {
     ...sharedPageComponents,
@@ -45,38 +74,18 @@ export const ContentPage: QuartzEmitterPlugin<Partial<FullPageLayout>> = (userOp
       ]
     },
     async *emit(ctx, content, resources) {
-      const cfg = ctx.cfg.configuration
       const allFiles = content.map((c) => c[1].data)
-
       let containsIndex = false
+
       for (const [tree, file] of content) {
         const slug = file.data.slug!
         if (slug === "index") {
           containsIndex = true
         }
 
-        if (file.data.slug?.endsWith("/index")) {
-          continue
-        }
-
-        const externalResources = pageResources(pathToRoot(slug), file.data, resources)
-        const componentData: QuartzComponentProps = {
-          ctx,
-          fileData: file.data,
-          externalResources,
-          cfg,
-          children: [],
-          tree,
-          allFiles,
-        }
-
-        const content = renderPage(cfg, slug, componentData, opts, externalResources)
-        yield write({
-          ctx,
-          content,
-          slug,
-          ext: ".html",
-        })
+        // only process home page, non-tag pages, and non-index pages
+        if (slug.endsWith("/index") || slug.startsWith("tags/")) continue
+        yield processContent(ctx, tree, file.data, allFiles, opts, resources)
       }
 
       if (!containsIndex) {
@@ -87,5 +96,25 @@ export const ContentPage: QuartzEmitterPlugin<Partial<FullPageLayout>> = (userOp
         )
       }
     },
+    async *partialEmit(ctx, content, resources, changeEvents) {
+      const allFiles = content.map((c) => c[1].data)
+
+      // find all slugs that changed or were added
+      const changedSlugs = new Set<string>()
+      for (const changeEvent of changeEvents) {
+        if (!changeEvent.file) continue
+        if (changeEvent.type === "add" || changeEvent.type === "change") {
+          changedSlugs.add(changeEvent.file.data.slug!)
+        }
+      }
+
+      for (const [tree, file] of content) {
+        const slug = file.data.slug!
+        if (!changedSlugs.has(slug)) continue
+        if (slug.endsWith("/index") || slug.startsWith("tags/")) continue
+
+        yield processContent(ctx, tree, file.data, allFiles, opts, resources)
+      }
+    },
   }
 }