feat: improve dist type

Author: antfu

build.config.ts

@@ -1,3 +1,5 @@
+import fs from 'node:fs/promises'
+import { glob } from 'tinyglobby'
 import { defineBuildConfig } from 'unbuild'
 
 export default defineBuildConfig({
@@ -9,4 +11,19 @@ export default defineBuildConfig({
   rollup: {
     emitCJS: true,
   },
+  hooks: {
+    'build:done': async () => {
+      for (const file of await glob('./dist/*.d.{cts,mts,ts}')) {
+        const content = await fs.readFile(file, 'utf-8')
+        // Override `options` type on dist dts only
+        const newContent = content.replace(
+          'class MarkdownItAsync extends MarkdownIt {',
+          'class MarkdownItAsync extends MarkdownIt {\n    options: MarkdownItAsyncOptions',
+        )
+        if (content === newContent)
+          throw new Error(`Failed to replace for ${file}`)
+        await fs.writeFile(file, newContent, 'utf-8')
+      }
+    },
+  },
 })

package.json

@@ -63,6 +63,7 @@
     "pnpm": "^9.15.4",
     "shiki": "^1.27.2",
     "simple-git-hooks": "^2.11.1",
+    "tinyglobby": "^0.2.10",
     "typescript": "^5.7.3",
     "unbuild": "^3.3.1",
     "vite": "^6.0.7",

pnpm-lock.yaml

@@ -44,7 +44,7 @@ describe('markdown-it-async', async () => {
     const mda = createMarkdownItAsync()
 
     mda.use((md) => {
-      // @ts-expect-error cast, not yet have a solution to override this type
+      // @ts-expect-error cast, patched in dist
       md.options.highlight = async (str, lang) => {
         return await codeToHtml(str, {
           lang,