fix: parseExpressionAt

__test__/api/parseExpressionAt.test.ts

@@ -0,0 +1,22 @@
+import { generateSource, Parser } from '../utils'
+
+function parseExpressionAt(input: string, pos: number) {
+  return Parser.parseExpressionAt(input, pos, {
+    sourceType: 'module',
+    ecmaVersion: 'latest',
+    locations: true
+  })
+}
+
+describe('parseExpressionAt API', function() {
+  it('normal', function() {
+    const node = parseExpressionAt(generateSource([
+      `<tag prop={`,
+      `  (): void => {}`,
+      `} />`
+    ]), 14)
+
+    expect(node.type).toEqual('ArrowFunctionExpression')
+  })
+})
+

__test__/utils.ts

@@ -1,7 +1,7 @@
 import * as acorn from 'acorn'
 import tsPlugin from '../src'
 
-const Parser = acorn.Parser.extend(tsPlugin({
+export const Parser = acorn.Parser.extend(tsPlugin({
   jsx: {
     allowNamespacedObjects: true,
     allowNamespaces: true

src/index.ts

@@ -5169,7 +5169,7 @@ function tsPlugin(options?: {
           parser.isAmbientContext = true
         }
         parser.nextToken()
-        return (parser as any).parseExpressionAt()
+        return parser.parseExpression()
       }
 
       parseImportSpecifiers() {