feat: migrate to shikiji (#3237)

Author: antfu

__tests__/e2e/markdown-extensions/markdown-extensions.test.ts

@@ -163,19 +163,19 @@ describe('Line Numbers', () => {
 describe('Import Code Snippets', () => {
   test('basic', async () => {
     const lines = page.locator('#basic-code-snippet + div code > span')
-    expect(await lines.count()).toBe(22)
+    expect(await lines.count()).toBe(11)
   })
 
   test('specify region', async () => {
     const lines = page.locator('#specify-region + div code > span')
-    expect(await lines.count()).toBe(6)
+    expect(await lines.count()).toBe(3)
   })
 
   test('with other features', async () => {
     const div = page.locator('#with-other-features + div')
     expect(await getClassList(div)).toContain('line-numbers-mode')
     const lines = div.locator('code > span')
-    expect(await lines.count()).toBe(6)
+    expect(await lines.count()).toBe(3)
     expect(await getClassList(lines.nth(0))).toContain('highlighted')
   })
 })
@@ -216,10 +216,10 @@ describe('Code Groups', () => {
 
     // blocks
     const blocks = div.locator('.blocks > div')
-    expect(await blocks.nth(0).locator('code > span').count()).toBe(22)
+    expect(await blocks.nth(0).locator('code > span').count()).toBe(11)
     expect(await getClassList(blocks.nth(1))).toContain('line-numbers-mode')
     expect(await getClassList(blocks.nth(1))).toContain('language-ts')
-    expect(await blocks.nth(1).locator('code > span').count()).toBe(6)
+    expect(await blocks.nth(1).locator('code > span').count()).toBe(3)
     expect(
       await getClassList(blocks.nth(1).locator('code > span').nth(0))
     ).toContain('highlighted')

docs/.vitepress/config.ts

@@ -13,7 +13,15 @@ export default defineConfig({
   cleanUrls: true,
 
   markdown: {
-    math: true
+    math: true,
+    codeTransformers: [
+      // We use `[!!code` in demo to prevent transformation, here we revert it back.
+      {
+        postprocess(code) {
+          return code.replace(/\[\!\!code/g, '[!code')
+        }
+      }
+    ]
   },
 
   sitemap: {

docs/guide/markdown.md

@@ -80,7 +80,7 @@ For more details, see [Frontmatter](../reference/frontmatter-config).
 
 **Input**
 
-```
+```md
 | Tables        |      Are      |  Cool |
 | ------------- | :-----------: | ----: |
 | col 3 is      | right-aligned | $1600 |
@@ -265,7 +265,7 @@ Wraps in a <div class="vp-raw">
 
 ## Syntax Highlighting in Code Blocks
 
-VitePress uses [Shiki](https://shiki.matsu.io/) to highlight language syntax in Markdown code blocks, using coloured text. Shiki supports a wide variety of programming languages. All you need to do is append a valid language alias to the beginning backticks for the code block:
+VitePress uses [Shikiji](https://github.com/antfu/shikiji) (an improved version of [Shiki](https://shiki.matsu.io/)) to highlight language syntax in Markdown code blocks, using coloured text. Shiki supports a wide variety of programming languages. All you need to do is append a valid language alias to the beginning backticks for the code block:
 
 **Input**
 
@@ -377,7 +377,7 @@ export default { // Highlighted
 }
 ```
 
-Alternatively, it's possible to highlight directly in the line by using the `// [!code hl]` comment.
+Alternatively, it's possible to highlight directly in the line by using the `// [!code hightlight]` comment.
 
 **Input**
 
@@ -386,7 +386,7 @@ Alternatively, it's possible to highlight directly in the line by using the `//
 export default {
   data () {
     return {
-      msg: 'Highlighted!' // [!code  hl]
+      msg: 'Highlighted!' // [!!code highlight]
     }
   }
 }
@@ -399,7 +399,7 @@ export default {
 export default {
   data() {
     return {
-      msg: 'Highlighted!' // [!code hl]
+      msg: 'Highlighted!' // [!code highlight]
     }
   }
 }
@@ -413,14 +413,12 @@ Additionally, you can define a number of lines to focus using `// [!code focus:<
 
 **Input**
 
-Note that only one space is required after `!code`, here are two to prevent processing.
-
 ````
 ```js
 export default {
   data () {
     return {
-      msg: 'Focused!' // [!code  focus]
+      msg: 'Focused!' // [!!code focus]
     }
   }
 }
@@ -445,15 +443,13 @@ Adding the `// [!code --]` or `// [!code ++]` comments on a line will create a d
 
 **Input**
 
-Note that only one space is required after `!code`, here are two to prevent processing.
-
 ````
 ```js
 export default {
   data () {
     return {
-      msg: 'Removed' // [!code  --]
-      msg: 'Added' // [!code  ++]
+      msg: 'Removed' // [!!code --]
+      msg: 'Added' // [!!code ++]
     }
   }
 }
@@ -479,15 +475,13 @@ Adding the `// [!code warning]` or `// [!code error]` comments on a line will co
 
 **Input**
 
-Note that only one space is required after `!code`, here are two to prevent processing.
-
 ````
 ```js
 export default {
   data () {
     return {
-      msg: 'Error', // [!code  error]
-      msg: 'Warning' // [!code  warning]
+      msg: 'Error', // [!!code error]
+      msg: 'Warning' // [!!code warning]
     }
   }
 }

docs/reference/site-config.md

@@ -454,95 +454,15 @@ When using the default theme, enabling this option will display each page's last
 
 - Type: `MarkdownOption`
 
-Configure Markdown parser options. VitePress uses [Markdown-it](https://github.com/markdown-it/markdown-it) as the parser, and [Shiki](https://shiki.matsu.io/) to highlight language syntax. Inside this option, you may pass various Markdown related options to fit your needs.
+Configure Markdown parser options. VitePress uses [Markdown-it](https://github.com/markdown-it/markdown-it) as the parser, and [Shikiji](https://github.com/antfu/shikiji) (an improved version of [Shiki](https://shiki.matsu.io/)) to highlight language syntax. Inside this option, you may pass various Markdown related options to fit your needs.
 
 ```js
 export default {
   markdown: {...}
 }
 ```
 
-Below are all the options that you can have in this object:
-
-```ts
-interface MarkdownOptions extends MarkdownIt.Options {
-  // Custom theme for syntax highlighting.
-  // You can use an existing theme.
-  // See: https://github.com/shikijs/shiki/blob/main/docs/themes.md#all-themes
-  // Or add your own theme.
-  // See: https://github.com/shikijs/shiki/blob/main/docs/themes.md#loading-theme
-  theme?:
-    | Shiki.IThemeRegistration
-    | { light: Shiki.IThemeRegistration; dark: Shiki.IThemeRegistration }
-
-  // Enable line numbers in code block.
-  lineNumbers?: boolean
-
-  // Add support for your own languages.
-  // https://github.com/shikijs/shiki/blob/main/docs/languages.md#supporting-your-own-languages-with-shiki
-  languages?: Shiki.ILanguageRegistration[]
-
-  // markdown-it-anchor plugin options.
-  // See: https://github.com/valeriangalliat/markdown-it-anchor#usage
-  anchor?: anchorPlugin.AnchorOptions
-
-  // markdown-it-attrs plugin options.
-  // See: https://github.com/arve0/markdown-it-attrs
-  attrs?: {
-    leftDelimiter?: string
-    rightDelimiter?: string
-    allowedAttributes?: Array<string | RegExp>
-    disable?: boolean
-  }
-
-  // specify default language for syntax highlighter
-  defaultHighlightLang?: string
-
-  // @mdit-vue/plugin-frontmatter plugin options.
-  // See: https://github.com/mdit-vue/mdit-vue/tree/main/packages/plugin-frontmatter#options
-  frontmatter?: FrontmatterPluginOptions
-
-  // @mdit-vue/plugin-headers plugin options.
-  // See: https://github.com/mdit-vue/mdit-vue/tree/main/packages/plugin-headers#options
-  headers?: HeadersPluginOptions | boolean
-
-  // @mdit-vue/plugin-sfc plugin options.
-  // See: https://github.com/mdit-vue/mdit-vue/tree/main/packages/plugin-sfc#options
-  sfc?: SfcPluginOptions
-
-  // @mdit-vue/plugin-toc plugin options.
-  // See: https://github.com/mdit-vue/mdit-vue/tree/main/packages/plugin-toc#options
-  toc?: TocPluginOptions
-
-  // @mdit-vue/plugin-component plugin options.
-  // See: https://github.com/mdit-vue/mdit-vue/tree/main/packages/plugin-component#options
-  component?: ComponentPluginOptions
-
-  // Configure the Markdown-it instance.
-  config?: (md: MarkdownIt) => void
-
-  // Same as `config` but will be applied before all other plugins.
-  preConfig?: (md: MarkdownIt) => void
-
-  // Disable cache (experimental)
-  cache?: boolean
-
-  // Math support (experimental)
-  // You need to install `markdown-it-mathjax3` and set `math` to `true` to enable it.
-  // You can also pass options to `markdown-it-mathjax3` here.
-  // See: https://github.com/tani/markdown-it-mathjax3#customization
-  math?: boolean | any
-
-  // Global custom container titles
-  container?: {
-    infoLabel?: string
-    tipLabel?: string
-    warningLabel?: string
-    dangerLabel?: string
-    detailsLabel?: string
-  }
-}
-```
+Check the [type declaration and jsdocs](https://github.com/vuejs/vitepress/blob/main/src/node/markdown/markdown.ts) for all the options available.
 
 ### vite
 

package.json

@@ -101,7 +101,8 @@
     "mark.js": "8.11.1",
     "minisearch": "^6.2.0",
     "mrmime": "^1.0.1",
-    "shiki": "^0.14.5",
+    "shikiji": "^0.7.2",
+    "shikiji-transformers": "^0.7.2",
     "vite": "^5.0.0",
     "vue": "^3.3.8"
   },
@@ -187,7 +188,6 @@
     "rollup-plugin-dts": "^6.1.0",
     "rollup-plugin-esbuild": "^6.1.0",
     "semver": "^7.5.4",
-    "shiki-processor": "^0.1.3",
     "simple-git-hooks": "^2.9.0",
     "sirv": "^2.0.3",
     "sitemap": "^7.1.1",