From c538c151c7462ad0395ff2c15c5e11e89e362aa8 Mon Sep 17 00:00:00 2001
From: Striven <sg.striven@cutecat.club>
Date: Sat, 04 Apr 2026 19:47:16 +0000
Subject: [PATCH] Initial commit

---
 quartz/build.ts |  345 +++++++++++++++++++++++++++++++++++++++------------------
 1 files changed, 234 insertions(+), 111 deletions(-)

diff --git a/quartz/build.ts b/quartz/build.ts
index ae5fd40..b98f4a8 100644
--- a/quartz/build.ts
+++ b/quartz/build.ts
@@ -1,42 +1,55 @@
 import sourceMapSupport from "source-map-support"
-sourceMapSupport.install({
-  retrieveSourceMap(source) {
-    // source map hack to get around query param
-    // import cache busting
-    if (source.includes(".quartz-cache")) {
-      let realSource = fileURLToPath(source.split("?", 2)[0] + ".map")
-      return {
-        map: fs.readFileSync(realSource, "utf8"),
-      }
-    } else {
-      return null
-    }
-  },
-})
-
+sourceMapSupport.install(options)
 import path from "path"
-import { PerfTimer } from "./perf"
-import { rimraf } from "rimraf"
-import { isGitIgnored } from "globby"
-import chalk from "chalk"
+import { PerfTimer } from "./util/perf"
+import { rm } from "fs/promises"
+import { GlobbyFilterFunction, isGitIgnored } from "globby"
+import { styleText } from "util"
 import { parseMarkdown } from "./processors/parse"
 import { filterContent } from "./processors/filter"
 import { emitContent } from "./processors/emit"
 import cfg from "../quartz.config"
-import { FilePath, joinSegments, slugifyFilePath } from "./path"
+import { FilePath, joinSegments, slugifyFilePath } from "./util/path"
 import chokidar from "chokidar"
 import { ProcessedContent } from "./plugins/vfile"
-import { Argv, BuildCtx } from "./ctx"
-import { glob, toPosixPath } from "./glob"
-import { trace } from "./trace"
-import { fileURLToPath } from "url"
-import fs from "fs"
+import { Argv, BuildCtx } from "./util/ctx"
+import { glob, toPosixPath } from "./util/glob"
+import { trace } from "./util/trace"
+import { options } from "./util/sourcemap"
+import { Mutex } from "async-mutex"
+import { getStaticResourcesFromPlugins } from "./plugins"
+import { randomIdNonSecure } from "./util/random"
+import { ChangeEvent } from "./plugins/types"
+import { minimatch } from "minimatch"
 
-async function buildQuartz(argv: Argv, clientRefresh: () => void) {
+type ContentMap = Map<
+  FilePath,
+  | {
+      type: "markdown"
+      content: ProcessedContent
+    }
+  | {
+      type: "other"
+    }
+>
+
+type BuildData = {
+  ctx: BuildCtx
+  ignored: GlobbyFilterFunction
+  mut: Mutex
+  contentMap: ContentMap
+  changesSinceLastBuild: Record<FilePath, ChangeEvent["type"]>
+  lastBuildMs: number
+}
+
+async function buildQuartz(argv: Argv, mut: Mutex, clientRefresh: () => void) {
   const ctx: BuildCtx = {
+    buildId: randomIdNonSecure(),
     argv,
     cfg,
     allSlugs: [],
+    allFiles: [],
+    incremental: false,
   }
 
   const perf = new PerfTimer()
@@ -52,131 +65,241 @@
     console.log(`  Emitters: ${pluginNames("emitters").join(", ")}`)
   }
 
+  const release = await mut.acquire()
   perf.addEvent("clean")
-  await rimraf(output)
+  await rm(output, { recursive: true, force: true })
   console.log(`Cleaned output directory \`${output}\` in ${perf.timeSince("clean")}`)
 
   perf.addEvent("glob")
   const allFiles = await glob("**/*.*", argv.directory, cfg.configuration.ignorePatterns)
-  const fps = allFiles.filter((fp) => fp.endsWith(".md"))
+  const markdownPaths = allFiles.filter((fp) => fp.endsWith(".md")).sort()
   console.log(
-    `Found ${fps.length} input files from \`${argv.directory}\` in ${perf.timeSince("glob")}`,
+    `Found ${markdownPaths.length} input files from \`${argv.directory}\` in ${perf.timeSince("glob")}`,
   )
 
-  const filePaths = fps.map((fp) => joinSegments(argv.directory, fp) as FilePath)
+  const filePaths = markdownPaths.map((fp) => joinSegments(argv.directory, fp) as FilePath)
+  ctx.allFiles = allFiles
   ctx.allSlugs = allFiles.map((fp) => slugifyFilePath(fp as FilePath))
 
   const parsedFiles = await parseMarkdown(ctx, filePaths)
   const filteredContent = filterContent(ctx, parsedFiles)
-  await emitContent(ctx, filteredContent)
-  console.log(chalk.green(`Done processing ${fps.length} files in ${perf.timeSince()}`))
 
-  if (argv.serve) {
-    return startServing(ctx, parsedFiles, clientRefresh)
+  await emitContent(ctx, filteredContent)
+  console.log(
+    styleText("green", `Done processing ${markdownPaths.length} files in ${perf.timeSince()}`),
+  )
+  release()
+
+  if (argv.watch) {
+    ctx.incremental = true
+    return startWatching(ctx, mut, parsedFiles, clientRefresh)
   }
 }
 
 // setup watcher for rebuilds
-async function startServing(
+async function startWatching(
   ctx: BuildCtx,
+  mut: Mutex,
   initialContent: ProcessedContent[],
   clientRefresh: () => void,
 ) {
-  const { argv } = ctx
+  const { argv, allFiles } = ctx
 
-  const ignored = await isGitIgnored()
-  const contentMap = new Map<FilePath, ProcessedContent>()
-  for (const content of initialContent) {
-    const [_tree, vfile] = content
-    contentMap.set(vfile.data.filePath!, content)
+  const contentMap: ContentMap = new Map()
+  for (const filePath of allFiles) {
+    contentMap.set(filePath, {
+      type: "other",
+    })
   }
 
-  let timeoutId: ReturnType<typeof setTimeout> | null = null
-  let toRebuild: Set<FilePath> = new Set()
-  let toRemove: Set<FilePath> = new Set()
-  let trackedAssets: Set<FilePath> = new Set()
-  async function rebuild(fp: string, action: "add" | "change" | "delete") {
-    // don't do anything for gitignored files
-    if (ignored(fp)) {
-      return
-    }
+  for (const content of initialContent) {
+    const [_tree, vfile] = content
+    contentMap.set(vfile.data.relativePath!, {
+      type: "markdown",
+      content,
+    })
+  }
 
-    // dont bother rebuilding for non-content files, just track and refresh
-    if (path.extname(fp) !== ".md") {
-      fp = toPosixPath(fp)
-      const filePath = joinSegments(argv.directory, fp) as FilePath
-      if (action === "add" || action === "change") {
-        trackedAssets.add(filePath)
-      } else if (action === "delete") {
-        trackedAssets.add(filePath)
-      }
-      clientRefresh()
-      return
-    }
-
-    fp = toPosixPath(fp)
-    const filePath = joinSegments(argv.directory, fp) as FilePath
-    if (action === "add" || action === "change") {
-      toRebuild.add(filePath)
-    } else if (action === "delete") {
-      toRemove.add(filePath)
-    }
-
-    if (timeoutId) {
-      clearTimeout(timeoutId)
-    }
-
-    // debounce rebuilds every 250ms
-    timeoutId = setTimeout(async () => {
-      const perf = new PerfTimer()
-      console.log(chalk.yellow("Detected change, rebuilding..."))
-      try {
-        const filesToRebuild = [...toRebuild].filter((fp) => !toRemove.has(fp))
-
-        ctx.allSlugs = [...new Set([...contentMap.keys(), ...toRebuild, ...trackedAssets])]
-          .filter((fp) => !toRemove.has(fp))
-          .map((fp) => slugifyFilePath(path.posix.relative(argv.directory, fp) as FilePath))
-
-        const parsedContent = await parseMarkdown(ctx, filesToRebuild)
-        for (const content of parsedContent) {
-          const [_tree, vfile] = content
-          contentMap.set(vfile.data.filePath!, content)
+  const gitIgnoredMatcher = await isGitIgnored()
+  const buildData: BuildData = {
+    ctx,
+    mut,
+    contentMap,
+    ignored: (fp) => {
+      const pathStr = toPosixPath(fp.toString())
+      if (pathStr.startsWith(".git/")) return true
+      if (gitIgnoredMatcher(pathStr)) return true
+      for (const pattern of cfg.configuration.ignorePatterns) {
+        if (minimatch(pathStr, pattern)) {
+          return true
         }
-
-        for (const fp of toRemove) {
-          contentMap.delete(fp)
-        }
-
-        await rimraf(argv.output)
-        const parsedFiles = [...contentMap.values()]
-        const filteredContent = filterContent(ctx, parsedFiles)
-        await emitContent(ctx, filteredContent)
-        console.log(chalk.green(`Done rebuilding in ${perf.timeSince()}`))
-      } catch {
-        console.log(chalk.yellow(`Rebuild failed. Waiting on a change to fix the error...`))
       }
 
-      clientRefresh()
-      toRebuild.clear()
-      toRemove.clear()
-    }, 250)
+      return false
+    },
+
+    changesSinceLastBuild: {},
+    lastBuildMs: 0,
   }
 
   const watcher = chokidar.watch(".", {
+    awaitWriteFinish: { stabilityThreshold: 250 },
     persistent: true,
     cwd: argv.directory,
     ignoreInitial: true,
   })
 
+  const changes: ChangeEvent[] = []
   watcher
-    .on("add", (fp) => rebuild(fp, "add"))
-    .on("change", (fp) => rebuild(fp, "change"))
-    .on("unlink", (fp) => rebuild(fp, "delete"))
+    .on("add", (fp) => {
+      fp = toPosixPath(fp)
+      if (buildData.ignored(fp)) return
+      changes.push({ path: fp as FilePath, type: "add" })
+      void rebuild(changes, clientRefresh, buildData)
+    })
+    .on("change", (fp) => {
+      fp = toPosixPath(fp)
+      if (buildData.ignored(fp)) return
+      changes.push({ path: fp as FilePath, type: "change" })
+      void rebuild(changes, clientRefresh, buildData)
+    })
+    .on("unlink", (fp) => {
+      fp = toPosixPath(fp)
+      if (buildData.ignored(fp)) return
+      changes.push({ path: fp as FilePath, type: "delete" })
+      void rebuild(changes, clientRefresh, buildData)
+    })
+
+  return async () => {
+    await watcher.close()
+  }
 }
 
-export default async (argv: Argv, clientRefresh: () => void) => {
+async function rebuild(changes: ChangeEvent[], clientRefresh: () => void, buildData: BuildData) {
+  const { ctx, contentMap, mut, changesSinceLastBuild } = buildData
+  const { argv, cfg } = ctx
+
+  const buildId = randomIdNonSecure()
+  ctx.buildId = buildId
+  buildData.lastBuildMs = new Date().getTime()
+  const numChangesInBuild = changes.length
+  const release = await mut.acquire()
+
+  // if there's another build after us, release and let them do it
+  if (ctx.buildId !== buildId) {
+    release()
+    return
+  }
+
+  const perf = new PerfTimer()
+  perf.addEvent("rebuild")
+  console.log(styleText("yellow", "Detected change, rebuilding..."))
+
+  // update changesSinceLastBuild
+  for (const change of changes) {
+    changesSinceLastBuild[change.path] = change.type
+  }
+
+  const staticResources = getStaticResourcesFromPlugins(ctx)
+  const pathsToParse: FilePath[] = []
+  for (const [fp, type] of Object.entries(changesSinceLastBuild)) {
+    if (type === "delete" || path.extname(fp) !== ".md") continue
+    const fullPath = joinSegments(argv.directory, toPosixPath(fp)) as FilePath
+    pathsToParse.push(fullPath)
+  }
+
+  const parsed = await parseMarkdown(ctx, pathsToParse)
+  for (const content of parsed) {
+    contentMap.set(content[1].data.relativePath!, {
+      type: "markdown",
+      content,
+    })
+  }
+
+  // update state using changesSinceLastBuild
+  // we do this weird play of add => compute change events => remove
+  // so that partialEmitters can do appropriate cleanup based on the content of deleted files
+  for (const [file, change] of Object.entries(changesSinceLastBuild)) {
+    if (change === "delete") {
+      // universal delete case
+      contentMap.delete(file as FilePath)
+    }
+
+    // manually track non-markdown files as processed files only
+    // contains markdown files
+    if (change === "add" && path.extname(file) !== ".md") {
+      contentMap.set(file as FilePath, {
+        type: "other",
+      })
+    }
+  }
+
+  const changeEvents: ChangeEvent[] = Object.entries(changesSinceLastBuild).map(([fp, type]) => {
+    const path = fp as FilePath
+    const processedContent = contentMap.get(path)
+    if (processedContent?.type === "markdown") {
+      const [_tree, file] = processedContent.content
+      return {
+        type,
+        path,
+        file,
+      }
+    }
+
+    return {
+      type,
+      path,
+    }
+  })
+
+  // update allFiles and then allSlugs with the consistent view of content map
+  ctx.allFiles = Array.from(contentMap.keys())
+  ctx.allSlugs = ctx.allFiles.map((fp) => slugifyFilePath(fp as FilePath))
+  let processedFiles = filterContent(
+    ctx,
+    Array.from(contentMap.values())
+      .filter((file) => file.type === "markdown")
+      .map((file) => file.content),
+  )
+
+  let emittedFiles = 0
+  for (const emitter of cfg.plugins.emitters) {
+    // Try to use partialEmit if available, otherwise assume the output is static
+    const emitFn = emitter.partialEmit ?? emitter.emit
+    const emitted = await emitFn(ctx, processedFiles, staticResources, changeEvents)
+    if (emitted === null) {
+      continue
+    }
+
+    if (Symbol.asyncIterator in emitted) {
+      // Async generator case
+      for await (const file of emitted) {
+        emittedFiles++
+        if (ctx.argv.verbose) {
+          console.log(`[emit:${emitter.name}] ${file}`)
+        }
+      }
+    } else {
+      // Array case
+      emittedFiles += emitted.length
+      if (ctx.argv.verbose) {
+        for (const file of emitted) {
+          console.log(`[emit:${emitter.name}] ${file}`)
+        }
+      }
+    }
+  }
+
+  console.log(`Emitted ${emittedFiles} files to \`${argv.output}\` in ${perf.timeSince("rebuild")}`)
+  console.log(styleText("green", `Done rebuilding in ${perf.timeSince()}`))
+  changes.splice(0, numChangesInBuild)
+  clientRefresh()
+  release()
+}
+
+export default async (argv: Argv, mut: Mutex, clientRefresh: () => void) => {
   try {
-    return await buildQuartz(argv, clientRefresh)
+    return await buildQuartz(argv, mut, clientRefresh)
   } catch (err) {
     trace("\nExiting Quartz due to a fatal error", err as Error)
   }

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