Fixed transformObjectKeys with mangled identifier generator causing variable shadowing when extracted object variable name matched an existing inner scope variable

test/functional-tests/issues/fixtures/issue1232.js

@@ -0,0 +1 @@
+[].forEach(a => a === { a: 1 });

test/functional-tests/issues/issue1232.spec.ts

@@ -0,0 +1,32 @@
+import { assert } from 'chai';
+import { NO_ADDITIONAL_NODES_PRESET } from '../../../src/options/presets/NoCustomNodes';
+import { readFileAsString } from '../../helpers/readFileAsString';
+import { JavaScriptObfuscator } from '../../../src/JavaScriptObfuscatorFacade';
+
+//
+// https://github.com/javascript-obfuscator/javascript-obfuscator/issues/1232
+//
+describe('Issue #1232', () => {
+    describe('transformObjectKeys should not cause variable shadowing with mangled identifiers', () => {
+        let obfuscatedCode: string;
+
+        before(() => {
+            const code: string = readFileAsString(__dirname + '/fixtures/issue1232.js');
+
+            obfuscatedCode = JavaScriptObfuscator.obfuscate(code, {
+                ...NO_ADDITIONAL_NODES_PRESET,
+                identifierNamesGenerator: 'mangled',
+                transformObjectKeys: true
+            }).getObfuscatedCode();
+        });
+
+        it('should not rename extracted object variable to same name as function parameter', () => {
+            const shadowingPattern = /(\w+)\s*===\s*\1[)\s;,]/;
+
+            assert.isFalse(
+                shadowingPattern.test(obfuscatedCode),
+                `Variable shadowing detected in obfuscated code: ${obfuscatedCode}`
+            );
+        });
+    });
+});