fix: support useConfig and composables in markdown templates

Author: cossssmin

src/composables/renderContext.ts

@@ -27,4 +27,5 @@ export interface RenderContext {
   tailwindBlocks?: TailwindBlock[]
 }
 
-export const RenderContextKey: InjectionKey<RenderContext> = Symbol('RenderContext')
+// Global symbol registry — same rationale as MaizzleConfigKey in useConfig.ts.
+export const RenderContextKey: InjectionKey<RenderContext> = Symbol.for('maizzle.renderContext')

src/composables/useConfig.ts

@@ -2,7 +2,14 @@ import { inject } from 'vue'
 import type { InjectionKey } from 'vue'
 import type { MaizzleConfig } from '../types/index.ts'
 
-export const MaizzleConfigKey: InjectionKey<MaizzleConfig> = Symbol('MaizzleConfig')
+/**
+ * Use the global symbol registry so the key is identical across every
+ * module instance. In dev, `render()` (Node) and the SFC's auto-imported
+ * composables can resolve to two separate instances of this module; a plain
+ * `Symbol()` would differ between them, so `app.provide()` and the SFC's
+ * `inject()` would miss each other and `useConfig()` would throw.
+ */
+export const MaizzleConfigKey: InjectionKey<MaizzleConfig> = Symbol.for('maizzle.config')
 
 export function useConfig(): MaizzleConfig {
   const config = inject(MaizzleConfigKey)

src/render/createRenderer.ts

@@ -307,6 +307,15 @@ export async function createRenderer(
           resolve(__dirname, '../filters'),
         ],
         imports: ['vue', unheadVueComposablesImports],
+        /**
+         * unplugin-auto-import's default `include` doesn't match `.md`, so
+         * auto-imports (Vue, unhead and Maizzle composables/filters) were
+         * never injected into Markdown templates — `useConfig()` and friends
+         * threw at runtime. Extend the default list with `.md` (and its
+         * `?vue` script sub-requests) to mirror the `.md` coverage the
+         * Components plugin already declares below.
+         */
+        include: [/\.[jt]sx?$/, /\.vue$/, /\.vue\?vue/, /\.md$/, /\.md\?vue/],
         dts: dts ? resolve(dtsDir, 'auto-imports.d.ts') : false,
       }),
       Components({