From 5d951b30cf986026d226f410b85d55fb10853c04 Mon Sep 17 00:00:00 2001
From: Khanh Nguyen <clarkkent.k41@gmail.com>
Date: Fri, 15 Dec 2023 02:43:03 +0700
Subject: [PATCH] fix: cannot find decoder, proxy functions because of some
 empty statements

---
 src/transformers/demangle.ts      | 3 ++-
 src/transformers/stringdecoder.ts | 9 ++-------
 2 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/src/transformers/demangle.ts b/src/transformers/demangle.ts
index 1d9d439..4c767c1 100644
--- a/src/transformers/demangle.ts
+++ b/src/transformers/demangle.ts
@@ -1,5 +1,4 @@
 import {
-  Program,
   BlockStatement,
   sp,
   Function,
@@ -17,6 +16,7 @@ import { Transformer, TransformerOptions } from './transformer'
 import { walk } from '../util/walk'
 import * as Guard from '../util/guard'
 import Context from '../context'
+import { filterEmptyStatements } from '../util/helpers'
 
 export interface DemangleOptions extends TransformerOptions {}
 export default class Demangle extends Transformer<DemangleOptions> {
@@ -29,6 +29,7 @@ export default class Demangle extends Transformer<DemangleOptions> {
   demangleProxies(context: Context) {
     function visitor(func: Function) {
       if (!Guard.isBlockStatement(func.body)) return
+      func.body.body = filterEmptyStatements(func.body.body) as Statement[];
       if (func.body.body.length !== 2) return
       let body = func.body.body
 
diff --git a/src/transformers/stringdecoder.ts b/src/transformers/stringdecoder.ts
index 47c9718..0e5bb7a 100644
--- a/src/transformers/stringdecoder.ts
+++ b/src/transformers/stringdecoder.ts
@@ -1,19 +1,13 @@
 import {
-  Program,
-  BlockStatement,
   Node,
   sp,
   VariableDeclaration,
-  ExpressionStatement,
-  ReturnStatement,
-  CallExpression,
   FunctionExpression,
   AssignmentExpression,
   StringLiteral,
   Identifier,
   Statement,
   Literal,
-  UnaryExpression,
   Expression,
   BinaryExpression,
   VariableDeclarator,
@@ -338,7 +332,8 @@ export default class StringDecoder extends Transformer<StringDecoderOptions> {
         const block = node.body
         const fnId = node.id.name
 
-        if (block.body.length > 3 && block.body.length < 1) return
+        block.body = filterEmptyStatements(block.body) as Statement[];
+        if (block.body.length > 3 || block.body.length < 1) return
         if (!block.body[0]) return
         // stringArray declaration
         if (