feat(twoslash): expose twoslasher option to be override

Author: antfu

packages/shikiji-twoslash/src/core.ts

@@ -26,7 +26,7 @@ export function defaultTwoSlashOptions() {
   }
 }
 
-export function createTransformer(runTwoslasher: typeof twoslasher) {
+export function createTransformerFactory(defaultTwoslasher: typeof twoslasher) {
   return function transformerTwoSlash(options: TransformerTwoSlashOptions = {}): ShikijiTransformer {
     const {
       langs = ['ts', 'tsx'],
@@ -36,6 +36,7 @@ export function createTransformer(runTwoslasher: typeof twoslasher) {
         json5: 'json',
         yml: 'yaml',
       },
+      twoslasher = defaultTwoslasher,
       explicitTrigger = false,
       renderer = rendererClassic(),
       throws = true,
@@ -49,7 +50,7 @@ export function createTransformer(runTwoslasher: typeof twoslasher) {
 
         if (filter(lang, code, shikijiOptions)) {
           shikijiOptions.mergeWhitespaces = false
-          const twoslash = runTwoslasher(code, lang, twoslashOptions)
+          const twoslash = twoslasher(code, lang, twoslashOptions)
           this.meta.twoslash = twoslash
           return twoslash.code
         }

packages/shikiji-twoslash/src/index.ts

@@ -1,6 +1,6 @@
 import { twoslasher } from '@typescript/twoslash'
-import { createTransformer } from './core'
+import { createTransformerFactory } from './core'
 
 export * from './core'
 
-export const transformerTwoSlash = createTransformer(twoslasher)
+export const transformerTwoSlash = createTransformerFactory(twoslasher)

packages/shikiji-twoslash/src/types.ts

@@ -1,4 +1,4 @@
-import type { TwoSlashOptions, TwoSlashReturn } from '@typescript/twoslash'
+import type { TwoSlashOptions, TwoSlashReturn, twoslasher } from '@typescript/twoslash'
 import type { CodeToHastOptions, ShikijiTransformerContext } from 'shikiji-core'
 import type { Element, ElementContent, Text } from 'hast'
 
@@ -28,6 +28,10 @@ export interface TransformerTwoSlashOptions {
    * When specified, `langs` and `explicitTrigger` will be ignored
    */
   filter?: (lang: string, code: string, options: CodeToHastOptions) => boolean
+  /**
+   * Custom instance of twoslasher function
+   */
+  twoslasher?: typeof twoslasher
   /**
    * Options to pass to twoslash
    */