Treat DebuggerStmt as EmptyStmt, fixes #370

tdewolff · Jan 29, 2021 · dd03d38 · dd03d38
1 parent 0df2feb
commit dd03d38
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Showing 3 changed files with 5 additions and 0 deletions.
diff --git a/js/js_test.go b/js/js_test.go
@@ -640,6 +640,7 @@ func TestJS(t *testing.T) {
 		{`for(var a;;)a();var b=5`, `for(var a,b;;)a();b=5`},                                            // #346
 		{`if(e?0:n=1,o=2){o.a}`, `(e?0:n=1,o=2)&&o.a`},                                                  // #347
 		{`const a=(a,b)=>({...a,b})`, `const a=(a,b)=>({...a,b})`},                                      // #369
+		{`if(!a)debugger;`, `!a`},                                                                       // #370
 	}
 
 	m := minify.New()

diff --git a/js/stmtlist.go b/js/stmtlist.go
@@ -101,6 +101,8 @@ func (m *jsMinifier) optimizeStmt(i js.IStmt) js.IStmt {
 			return &js.EmptyStmt{}
 		}
 		return blockStmt
+	} else if _, ok := i.(*js.DebuggerStmt); ok {
+		return &js.EmptyStmt{}
 	}
 	return i
 }

diff --git a/js/util.go b/js/util.go
@@ -303,6 +303,8 @@ func (m *jsMinifier) isEmptyStmt(stmt js.IStmt) bool {
 		return true
 	} else if _, ok := stmt.(*js.EmptyStmt); ok {
 		return true
+	} else if _, ok := stmt.(*js.DebuggerStmt); ok {
+		return true
 	} else if decl, ok := stmt.(*js.VarDecl); ok && m.varsHoisted != nil && decl != m.varsHoisted {
 		for _, item := range decl.List {
 			if item.Default != nil {