fix: plugin mapping from configuration

quartz.config.ts

@@ -1,151 +1,2 @@
-import { QuartzConfig } from "./quartz/cfg"
-import * as Plugin from "./quartz/plugins"
-import * as ExternalPlugin from "./.quartz/plugins"
-import { layout } from "./quartz.layout"
-
-const config: QuartzConfig = {
-  configuration: {
-    pageTitle: "Quartz 5",
-    pageTitleSuffix: "",
-    enableSPA: true,
-    enablePopovers: true,
-    analytics: {
-      provider: "plausible",
-    },
-    locale: "en-US",
-    baseUrl: "quartz.jzhao.xyz",
-    ignorePatterns: ["private", "templates", ".obsidian"],
-    defaultDateType: "modified",
-    theme: {
-      fontOrigin: "googleFonts",
-      cdnCaching: true,
-      typography: {
-        header: "Schibsted Grotesk",
-        body: "Source Sans Pro",
-        code: "IBM Plex Mono",
-      },
-      colors: {
-        lightMode: {
-          light: "#faf8f8",
-          lightgray: "#e5e5e5",
-          gray: "#b8b8b8",
-          darkgray: "#4e4e4e",
-          dark: "#2b2b2b",
-          secondary: "#284b63",
-          tertiary: "#84a59d",
-          highlight: "rgba(143, 159, 169, 0.15)",
-          textHighlight: "#fff23688",
-        },
-        darkMode: {
-          light: "#161618",
-          lightgray: "#393639",
-          gray: "#646464",
-          darkgray: "#d4d4d4",
-          dark: "#ebebec",
-          secondary: "#7b97aa",
-          tertiary: "#84a59d",
-          highlight: "rgba(143, 159, 169, 0.15)",
-          textHighlight: "#b3aa0288",
-        },
-      },
-    },
-  },
-  plugins: {
-    transformers: [
-      ExternalPlugin.NoteProperties({
-        includeAll: false,
-        includedProperties: ["description", "tags", "aliases"],
-        excludedProperties: [],
-        hidePropertiesView: false,
-        delimiters: "---",
-        language: "yaml",
-      }),
-      ExternalPlugin.CreatedModifiedDate({
-        priority: ["frontmatter", "git", "filesystem"],
-      }),
-      ExternalPlugin.SyntaxHighlighting({
-        theme: {
-          light: "github-light",
-          dark: "github-dark",
-        },
-        keepBackground: false,
-      }),
-      ExternalPlugin.ObsidianFlavoredMarkdown({ enableInHtmlEmbed: false, enableCheckbox: true }),
-      ExternalPlugin.GitHubFlavoredMarkdown(),
-      ExternalPlugin.TableOfContentsTransformer(),
-      ExternalPlugin.CrawlLinks({ markdownLinkResolution: "shortest" }),
-      ExternalPlugin.Description(),
-      ExternalPlugin.Latex({ renderEngine: "katex" }),
-    ],
-    filters: [ExternalPlugin.RemoveDrafts()],
-    emitters: [
-      ExternalPlugin.AliasRedirects(),
-      Plugin.ComponentResources(),
-      ExternalPlugin.ContentIndex({
-        enableSiteMap: true,
-        enableRSS: true,
-      }),
-      Plugin.Assets(),
-      Plugin.Static(),
-      ExternalPlugin.Favicon(),
-      Plugin.PageTypes.PageTypeDispatcher({
-        defaults: layout.defaults,
-        byPageType: layout.byPageType,
-      }),
-      ExternalPlugin.CustomOgImages(),
-      ExternalPlugin.CNAME(),
-    ],
-    pageTypes: [
-      ExternalPlugin.CanvasPage(),
-      ExternalPlugin.BasesPage(),
-      ExternalPlugin.ContentPage(),
-      ExternalPlugin.FolderPage(),
-      ExternalPlugin.TagPage(),
-      Plugin.PageTypes.NotFoundPageType(),
-    ],
-  },
-  externalPlugins: [
-    "github:quartz-community/explorer",
-    "github:quartz-community/graph",
-    "github:quartz-community/search",
-    "github:quartz-community/table-of-contents",
-    "github:quartz-community/backlinks",
-    "github:quartz-community/comments",
-    "github:quartz-community/article-title",
-    "github:quartz-community/tag-list",
-    "github:quartz-community/page-title",
-    "github:quartz-community/darkmode",
-    "github:quartz-community/reader-mode",
-    "github:quartz-community/content-meta",
-    "github:quartz-community/footer",
-    "github:quartz-community/content-page",
-    "github:quartz-community/folder-page",
-    "github:quartz-community/tag-page",
-    "github:quartz-community/latex",
-    "github:quartz-community/created-modified-date",
-    "github:quartz-community/syntax-highlighting",
-    "github:quartz-community/obsidian-flavored-markdown",
-    "github:quartz-community/github-flavored-markdown",
-    "github:quartz-community/crawl-links",
-    "github:quartz-community/description",
-    "github:quartz-community/hard-line-breaks",
-    "github:quartz-community/citations",
-    "github:quartz-community/ox-hugo",
-    "github:quartz-community/roam",
-    "github:quartz-community/remove-draft",
-    "github:quartz-community/explicit-publish",
-    "github:quartz-community/alias-redirects",
-    "github:quartz-community/cname",
-    "github:quartz-community/favicon",
-    "github:quartz-community/content-index",
-    "github:quartz-community/og-image",
-    "github:quartz-community/canvas-page",
-    "github:quartz-community/note-properties",
-    "github:quartz-community/bases-page",
-    "github:quartz-community/breadcrumbs",
-    "github:quartz-community/spacer",
-    "github:quartz-community/recent-notes",
-  ],
-}
-
-export default config
+import { loadQuartzConfig } from "./quartz/plugins/loader/config-loader"
+export default await loadQuartzConfig()

quartz.layout.ts

@@ -1,150 +1,2 @@
-import { FullPageLayout } from "./quartz/cfg"
-import * as Component from "./quartz/components"
-import * as Plugin from "./.quartz/plugins"
-
-// Create plugin components once and reuse across layouts
-const explorerComponent = Plugin.Explorer()
-const graphComponent = Plugin.Graph()
-const searchComponent = Plugin.Search()
-const backlinksComponent = Plugin.Backlinks()
-const tocComponent = Plugin.TableOfContents()
-const articleTitleComponent = Plugin.ArticleTitle()
-const contentMetaComponent = Plugin.ContentMeta()
-const tagListComponent = Plugin.TagList()
-const pageTitleComponent = Plugin.PageTitle()
-const darkmodeComponent = Plugin.Darkmode()
-const readerModeComponent = Plugin.ReaderMode()
-const breadcrumbsComponent = Plugin.Breadcrumbs()
-const notePropertiesComponent = Plugin.NotePropertiesComponent()
-
-export const layout: {
-  defaults: Partial<FullPageLayout>
-  byPageType: Record<string, Partial<FullPageLayout>>
-} = {
-  // Components shared across all page types (can be overridden per page type)
-  defaults: {
-    head: Component.Head(),
-    header: [],
-    afterBody: [
-      // Plugin.Comments({
-      //   provider: "giscus",
-      //   options: {}}),
-    ],
-    footer: Plugin.Footer({
-      links: {
-        GitHub: "https://github.com/jackyzha0/quartz",
-        "Discord Community": "https://discord.gg/cRFFHYye7t",
-      },
-    }),
-  },
-
-  // Per-page-type layout overrides
-  byPageType: {
-    // Content pages (single notes)
-    content: {
-      beforeBody: [
-        Component.ConditionalRender({
-          component: breadcrumbsComponent,
-          condition: (page) => page.fileData.slug !== "index",
-        }),
-        articleTitleComponent,
-        notePropertiesComponent,
-        contentMetaComponent,
-        tagListComponent,
-      ],
-      left: [
-        pageTitleComponent,
-        Component.MobileOnly(Component.Spacer()),
-        Component.Flex({
-          components: [
-            {
-              Component: searchComponent,
-              grow: true,
-            },
-            { Component: darkmodeComponent },
-            { Component: readerModeComponent },
-          ],
-        }),
-        explorerComponent,
-      ],
-      right: [graphComponent, Component.DesktopOnly(tocComponent), backlinksComponent],
-    },
-
-    // Folder listing pages
-    folder: {
-      beforeBody: [
-        breadcrumbsComponent,
-        articleTitleComponent,
-        notePropertiesComponent,
-        contentMetaComponent,
-      ],
-      left: [
-        pageTitleComponent,
-        Component.MobileOnly(Component.Spacer()),
-        Component.Flex({
-          components: [
-            {
-              Component: searchComponent,
-              grow: true,
-            },
-            { Component: darkmodeComponent },
-          ],
-        }),
-        explorerComponent,
-      ],
-      right: [],
-    },
-
-    // Tag listing pages
-    tag: {
-      beforeBody: [
-        breadcrumbsComponent,
-        articleTitleComponent,
-        notePropertiesComponent,
-        contentMetaComponent,
-      ],
-      left: [
-        pageTitleComponent,
-        Component.MobileOnly(Component.Spacer()),
-        Component.Flex({
-          components: [
-            {
-              Component: searchComponent,
-              grow: true,
-            },
-            { Component: darkmodeComponent },
-          ],
-        }),
-        explorerComponent,
-      ],
-      right: [],
-    },
-
-    // 404 page — minimal layout
-    "404": {
-      beforeBody: [],
-      left: [],
-      right: [],
-    },
-
-    // Canvas pages — expansive layout, no sidebars
-    canvas: {
-      beforeBody: [breadcrumbsComponent, articleTitleComponent, notePropertiesComponent],
-      left: [
-        pageTitleComponent,
-        Component.MobileOnly(Component.Spacer()),
-        Component.Flex({
-          components: [
-            {
-              Component: searchComponent,
-              grow: true,
-            },
-            { Component: darkmodeComponent },
-          ],
-        }),
-        explorerComponent,
-      ],
-      right: [graphComponent, Component.DesktopOnly(tocComponent), backlinksComponent],
-    },
-  },
-}
+import { loadQuartzLayout } from "./quartz/plugins/loader/config-loader"
+export const layout = await loadQuartzLayout()

quartz/components/registry.ts

@@ -25,7 +25,8 @@ class ComponentRegistry {
     source: string,
     manifest?: ComponentManifest,
   ): void {
-    if (this.components.has(name)) {
+    const existing = this.components.get(name)
+    if (existing && existing.source !== source) {
       console.warn(`Component "${name}" is being overwritten by ${source}`)
     }
     this.components.set(name, { component, source, manifest })
@@ -40,12 +41,27 @@ class ComponentRegistry {
   }
 
   getAllComponents(): QuartzComponent[] {
-    return Array.from(this.components.values()).map((r) => {
-      if (typeof r.component === "function") {
-        return (r.component as QuartzComponentConstructor)(undefined)
+    // Deduplicate by component reference (same constructor may be registered under multiple keys)
+    const seen = new Set<QuartzComponent | QuartzComponentConstructor>()
+    const results: QuartzComponent[] = []
+    for (const r of this.components.values()) {
+      if (seen.has(r.component)) continue
+      seen.add(r.component)
+      try {
+        let instance: QuartzComponent
+        if (typeof r.component === "function") {
+          instance = (r.component as QuartzComponentConstructor)(undefined)
+        } else {
+          instance = r.component as QuartzComponent
+        }
+        if (instance) {
+          results.push(instance)
+        }
+      } catch {
+        // Skip components that fail to instantiate
       }
-      return r.component as QuartzComponent
-    })
+    }
+    return results
   }
 }
 

quartz/plugins/loader/componentLoader.ts

@@ -1,39 +1,72 @@
 import { componentRegistry } from "../../components/registry"
 import { ComponentManifest, PluginManifest } from "./types"
 import { QuartzComponentConstructor } from "../../components/types"
+import { getPluginSubpathEntry } from "./gitLoader"
 
 export async function loadComponentsFromPackage(
-  packageName: string,
+  pluginName: string,
   manifest: PluginManifest | null,
+  subdir?: string,
 ): Promise<void> {
   if (!manifest?.components) return
 
   try {
-    const componentsModule = await import(`${packageName}/components`)
+    const componentsPath = getPluginSubpathEntry(pluginName, "./components", subdir)
 
-    for (const [exportName, componentManifest] of Object.entries(manifest.components)) {
+    let componentsModule: Record<string, unknown>
+    if (componentsPath) {
+      componentsModule = await import(componentsPath)
+    } else {
+      componentsModule = await import(`${pluginName}/components`)
+    }
+
+    const componentEntries = Object.entries(manifest.components)
+    for (const [exportName, componentManifest] of componentEntries) {
       const component = componentsModule[exportName]
       if (!component) {
         console.warn(
-          `Component "${exportName}" declared in manifest but not found in ${packageName}/components`,
+          `Component "${exportName}" declared in manifest but not found in ${pluginName}/components`,
         )
         continue
       }
 
-      const fullName = `${packageName}/${exportName}`
+      // Register under the fully-qualified key (pluginName/exportName)
       componentRegistry.register(
-        fullName,
+        `${pluginName}/${exportName}`,
         component as QuartzComponentConstructor,
-        packageName,
+        pluginName,
         componentManifest as ComponentManifest,
       )
+
+      // Also register under just the export name (e.g. "Footer", "NotePropertiesComponent")
+      // so buildLayoutForEntries can find it via PascalCase conversion of plugin name
+      if (!componentRegistry.get(exportName)) {
+        componentRegistry.register(
+          exportName,
+          component as QuartzComponentConstructor,
+          pluginName,
+          componentManifest as ComponentManifest,
+        )
+      }
+    }
+
+    // If plugin has exactly one component, also register under just the plugin name
+    // (e.g. "footer", "note-properties") for direct kebab-case lookup
+    if (componentEntries.length === 1) {
+      const [exportName] = componentEntries[0]
+      const component = componentsModule[exportName]
+      if (component && !componentRegistry.get(pluginName)) {
+        componentRegistry.register(
+          pluginName,
+          component as QuartzComponentConstructor,
+          pluginName,
+          componentEntries[0][1] as ComponentManifest,
+        )
+      }
     }
   } catch {
-    // Components module doesn't exist, that's okay for plugins without components
     if (manifest.components && Object.keys(manifest.components).length > 0) {
-      console.warn(
-        `Plugin ${packageName} declares components but failed to load them from ${packageName}/components`,
-      )
+      console.warn(`Plugin "${pluginName}" declares components but failed to load them`)
     }
   }
 }

quartz/plugins/loader/config-loader.ts

@@ -12,7 +12,6 @@ import {
   LayoutConfig,
   PluginLayoutDeclaration,
   FlexGroupConfig,
-  PluginCategory,
 } from "./types"
 import { parsePluginSource, installPlugin, getPluginEntryPoint } from "./gitLoader"
 import { loadComponentsFromPackage } from "./componentLoader"
@@ -284,8 +283,17 @@ export async function loadQuartzConfig(): Promise<QuartzConfig> {
         pageTypes.push({ entry, manifest })
         break
       default: {
-        // Try to detect category from the loaded module
         const gitSpec = parsePluginSource(entry.source)
+        const isComponentOnly =
+          resolvedCategory === "component" ||
+          (Array.isArray(category) && category.every((c) => c === "component"))
+
+        if (isComponentOnly) {
+          if (manifest?.components && Object.keys(manifest.components).length > 0) {
+            await loadComponentsFromPackage(gitSpec.name, manifest, gitSpec.subdir)
+          }
+          break
+        }
         const entryPoint = getPluginEntryPoint(gitSpec.name, gitSpec.subdir)
         try {
           const module = await import(entryPoint)
@@ -298,6 +306,8 @@ export async function loadQuartzConfig(): Promise<QuartzConfig> {
               pageType: pageTypes,
             }[detected]
             target.push({ entry, manifest })
+          } else if (manifest?.components && Object.keys(manifest.components).length > 0) {
+            await loadComponentsFromPackage(gitSpec.name, manifest, gitSpec.subdir)
           } else {
             console.warn(
               styleText("yellow", `⚠`) +
@@ -305,10 +315,14 @@ export async function loadQuartzConfig(): Promise<QuartzConfig> {
             )
           }
         } catch {
-          console.warn(
-            styleText("yellow", `⚠`) +
-              ` Could not load plugin "${extractPluginName(entry.source)}" to detect category. Skipping.`,
-          )
+          if (manifest?.components && Object.keys(manifest.components).length > 0) {
+            await loadComponentsFromPackage(gitSpec.name, manifest, gitSpec.subdir)
+          } else {
+            console.warn(
+              styleText("yellow", `⚠`) +
+                ` Could not load plugin "${extractPluginName(entry.source)}" to detect category. Skipping.`,
+            )
+          }
         }
       }
     }
@@ -332,6 +346,7 @@ export async function loadQuartzConfig(): Promise<QuartzConfig> {
   // Instantiate plugins
   const instantiate = async (
     items: { entry: PluginJsonEntry; manifest: PluginManifest | undefined }[],
+    expectedCategory: ProcessingCategory,
   ) => {
     const instances = []
     for (const { entry, manifest } of items) {
@@ -339,22 +354,18 @@ export async function loadQuartzConfig(): Promise<QuartzConfig> {
         const gitSpec = parsePluginSource(entry.source)
         const entryPoint = getPluginEntryPoint(gitSpec.name, gitSpec.subdir)
         const module = await import(entryPoint)
-
-        // Load components if declared
         if (manifest?.components && Object.keys(manifest.components).length > 0) {
-          await loadComponentsFromPackage(entryPoint, manifest)
+          await loadComponentsFromPackage(gitSpec.name, manifest, gitSpec.subdir)
         }
 
-        const factory = module.default ?? module.plugin
-        if (typeof factory !== "function") {
+        const factory = findFactory(module, expectedCategory)
+        if (!factory) {
           console.warn(
             styleText("yellow", `⚠`) +
-              ` Plugin "${extractPluginName(entry.source)}" has no factory function. Skipping.`,
+              ` Plugin "${extractPluginName(entry.source)}" has no factory function for category "${expectedCategory}". Skipping.`,
           )
           continue
         }
-
-        // Merge default options with user options
         const options = { ...manifest?.defaultOptions, ...entry.options }
         instances.push(factory(Object.keys(options).length > 0 ? options : undefined))
       } catch (err) {
@@ -378,19 +389,77 @@ export async function loadQuartzConfig(): Promise<QuartzConfig> {
   const builtinPageTypes = [builtinPlugins.PageTypes.NotFoundPageType()]
 
   const plugins: PluginTypes = {
-    transformers: [...builtinTransformers, ...(await instantiate(transformers))],
-    filters: await instantiate(filters),
-    emitters: [...builtinEmitters, ...(await instantiate(emitters))],
-    pageTypes: [...(await instantiate(pageTypes)), ...builtinPageTypes],
+    transformers: [...builtinTransformers, ...(await instantiate(transformers, "transformer"))],
+    filters: await instantiate(filters, "filter"),
+    emitters: [...builtinEmitters, ...(await instantiate(emitters, "emitter"))],
+    pageTypes: [...(await instantiate(pageTypes, "pageType")), ...builtinPageTypes],
   }
 
+  // Load layout and add PageTypeDispatcher to emitters.
+  // This must happen after plugin instantiation so the component registry is populated.
+  const layout = await loadQuartzLayout()
+  plugins.emitters.push(
+    builtinPlugins.PageTypes.PageTypeDispatcher({
+      defaults: layout.defaults,
+      byPageType: layout.byPageType,
+    }),
+  )
   return {
     configuration,
     plugins,
   }
 }
 
-function detectCategoryFromModule(module: unknown): PluginCategory | null {
+type ProcessingCategory = "transformer" | "filter" | "emitter" | "pageType"
+
+function matchesCategory(factory: Function, expected: ProcessingCategory): boolean {
+  try {
+    const instance = factory()
+    if (!instance || typeof instance !== "object") return false
+    switch (expected) {
+      case "pageType":
+        return "match" in instance && "body" in instance && "layout" in instance
+      case "emitter":
+        return "emit" in instance
+      case "filter":
+        return "shouldPublish" in instance
+      case "transformer":
+        return (
+          "textTransform" in instance || "markdownPlugins" in instance || "htmlPlugins" in instance
+        )
+    }
+  } catch {
+    return false
+  }
+}
+
+function findFactory(
+  module: Record<string, unknown>,
+  expectedCategory: ProcessingCategory,
+): Function | null {
+  if (
+    typeof module.default === "function" &&
+    matchesCategory(module.default as Function, expectedCategory)
+  ) {
+    return module.default as Function
+  }
+  if (
+    typeof module.plugin === "function" &&
+    matchesCategory(module.plugin as Function, expectedCategory)
+  ) {
+    return module.plugin as Function
+  }
+
+  for (const [, value] of Object.entries(module)) {
+    if (typeof value === "function" && matchesCategory(value as Function, expectedCategory)) {
+      return value as Function
+    }
+  }
+
+  return null
+}
+
+function detectCategoryFromModule(module: unknown): ProcessingCategory | null {
   if (!module || typeof module !== "object") return null
   const mod = module as Record<string, unknown>
 
@@ -474,23 +543,24 @@ export async function loadQuartzLayout(): Promise<{
   const HeadModule = await import("../../components/Head")
   const head = HeadModule.default()
 
-  // Find footer plugin
+  // Find footer from component registry (loaded during plugin instantiation)
   const footerEntry = json.plugins.find(
     (e) => e.enabled && extractPluginName(e.source) === "footer",
   )
   let footer: QuartzComponent | undefined
   if (footerEntry) {
-    try {
-      const gitSpec = parsePluginSource(footerEntry.source)
-      const entryPoint = getPluginEntryPoint(gitSpec.name, gitSpec.subdir)
-      const module = await import(entryPoint)
-      const factory = module.default ?? module.plugin
-      if (typeof factory === "function") {
-        const options = { ...footerEntry.options }
-        footer = factory(Object.keys(options).length > 0 ? options : undefined)
+    // Try registry lookup: plugin name ("footer") or export name ("Footer")
+    const footerReg = componentRegistry.get("footer") ?? componentRegistry.get("Footer")
+    if (footerReg) {
+      if (typeof footerReg.component === "function" && !("displayName" in footerReg.component)) {
+        // It's a constructor, instantiate with options
+        const opts = { ...footerEntry.options }
+        footer = (footerReg.component as Function)(
+          Object.keys(opts).length > 0 ? opts : undefined,
+        ) as QuartzComponent
+      } else {
+        footer = footerReg.component as QuartzComponent
       }
-    } catch {
-      // Footer not available
     }
   }
 

quartz/plugins/loader/gitLoader.ts

@@ -168,31 +168,102 @@ export function isPluginInstalled(name: string): boolean {
 }
 
 /**
- * Get the entry point for a plugin
+ * Get the entry point for a plugin.
+ * Prefers compiled dist/ output over raw src/ to avoid ESM resolution issues.
  */
 export function getPluginEntryPoint(name: string, subdir?: string): string {
   const pluginDir = getPluginDir(name)
   const searchDir = subdir ? path.join(pluginDir, subdir) : pluginDir
+  // Check package.json exports first (most reliable)
+  const pkgJsonPath = path.join(searchDir, "package.json")
+  if (fs.existsSync(pkgJsonPath)) {
+    try {
+      const pkg = JSON.parse(fs.readFileSync(pkgJsonPath, "utf-8"))
+      const exportEntry = pkg.exports?.["."]
+      const importPath = typeof exportEntry === "string" ? exportEntry : exportEntry?.import
+      if (importPath) {
+        const resolved = path.join(searchDir, importPath)
+        if (fs.existsSync(resolved)) {
+          return resolved
+        }
+      }
+      // Fall back to main/module fields
+      const mainField = pkg.module ?? pkg.main
+      if (mainField) {
+        const resolved = path.join(searchDir, mainField)
+        if (fs.existsSync(resolved)) {
+          return resolved
+        }
+      }
+    } catch {
+      // package.json parse error, fall through to candidates
+    }
+  }
 
-  // Try common entry points
+  // Try common entry points — prefer compiled dist/ over raw src/
   const candidates = [
-    path.join(searchDir, "src", "index.ts"),
-    path.join(searchDir, "src", "index.js"),
-    path.join(searchDir, "index.ts"),
-    path.join(searchDir, "index.js"),
     path.join(searchDir, "dist", "index.js"),
+    path.join(searchDir, "dist", "index.mjs"),
+    path.join(searchDir, "index.js"),
+    path.join(searchDir, "index.ts"),
+    path.join(searchDir, "src", "index.js"),
+    path.join(searchDir, "src", "index.ts"),
   ]
-
   for (const candidate of candidates) {
     if (fs.existsSync(candidate)) {
       return candidate
     }
   }
-
   // If no entry found, return the search dir and let Node handle it
   return searchDir
 }
 
+/**
+ * Resolve a subpath export for a plugin (e.g. "./components").
+ * Uses package.json exports map, then falls back to dist/ directory structure.
+ */
+export function getPluginSubpathEntry(
+  name: string,
+  subpath: string,
+  subdir?: string,
+): string | null {
+  const pluginDir = getPluginDir(name)
+  const searchDir = subdir ? path.join(pluginDir, subdir) : pluginDir
+
+  // Check package.json exports map
+  const pkgJsonPath = path.join(searchDir, "package.json")
+  if (fs.existsSync(pkgJsonPath)) {
+    try {
+      const pkg = JSON.parse(fs.readFileSync(pkgJsonPath, "utf-8"))
+      const exportEntry = pkg.exports?.[subpath]
+      const importPath = typeof exportEntry === "string" ? exportEntry : exportEntry?.import
+      if (importPath) {
+        const resolved = path.join(searchDir, importPath)
+        if (fs.existsSync(resolved)) {
+          return resolved
+        }
+      }
+    } catch {
+      // fall through
+    }
+  }
+
+  // Fall back: try dist/<subpath>/index.js
+  const subpathClean = subpath.replace(/^\.\/?/, "")
+  const fallbackCandidates = [
+    path.join(searchDir, "dist", subpathClean, "index.js"),
+    path.join(searchDir, "dist", `${subpathClean}.js`),
+    path.join(searchDir, subpathClean, "index.js"),
+  ]
+
+  for (const candidate of fallbackCandidates) {
+    if (fs.existsSync(candidate)) {
+      return candidate
+    }
+  }
+
+  return null
+}
 /**
  * Update all installed plugins
  */

quartz/plugins/loader/types.ts

@@ -6,7 +6,7 @@ import {
 } from "../types"
 import { BuildCtx } from "../../util/ctx"
 
-export type PluginCategory = "transformer" | "filter" | "emitter" | "pageType"
+export type PluginCategory = "transformer" | "filter" | "emitter" | "pageType" | "component"
 
 export type LayoutPosition = "left" | "right" | "beforeBody" | "afterBody"