fix: types

sxzz · Apr 16, 2024 · 07d38fc · 07d38fc
1 parent 6f20847
commit 07d38fc
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Showing 2 changed files with 10 additions and 4 deletions.
diff --git a/src/index.ts b/src/index.ts
@@ -7,8 +7,8 @@ import type { Node } from '@babel/types'
 export * from 'magic-string'
 export { MagicStringBase }
 
-// @ts-expect-error
-export class MagicString implements MagicStringBase {
+// @ts-expect-error whatever
+class MagicStringImpl implements MagicStringBase {
   offset: number
   s: MagicStringBase
 
@@ -19,7 +19,6 @@ export class MagicString implements MagicStringBase {
       offset?: number
     },
   ) {
-    // super(str, options)
     this.s = new MagicStringBase(str, options)
     this.offset = options?.offset ?? 0
     return new Proxy(this.s, {
@@ -89,6 +88,12 @@ export class MagicString implements MagicStringBase {
   }
 }
 
+export const MagicString = MagicStringImpl as any as {
+  new (
+    ...args: ConstructorParameters<typeof MagicStringImpl>
+  ): MagicStringImpl & MagicStringBase
+}
+
 function isEmptyNodes(nodes: Node | Node[]) {
   return Array.isArray(nodes) && nodes.length === 0
 }

diff --git a/tests/index.test.ts b/tests/index.test.ts
@@ -3,7 +3,8 @@ import { MagicString, MagicStringBase } from '../src'
 
 test('basic', () => {
   const s = new MagicString('foo')
-  expect(s.toString()).toBe('foo')
+  s.append('hello')
+  expect(s.toString()).toBe('foohello')
   expect(s instanceof MagicStringBase).toBe(true)
 })