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Cannot read property 'type' of undefined when using transformObjectKeys

See original GitHub issue

Expected Behavior

Using transformObjectKeys should not cause an error

Current Behavior

It causes the following error.

Steps to Reproduce (for bugs)

Unknown

Your Environment

Obfuscator version used: Versions 0.14 through 0.18 have had this issue
Node version used: 8.11.3

The code is generated by Webpack and the Webpack output.libraryTarget is ‘commonjs2’

Stack trace

C:\Projects\myApp\node_modules\javascript-obfuscator\dist\webpack:\JavaScriptObfuscator\src\node\NodeGuards.ts:262
        return node.type === NodeType.ObjectPattern;
                    ^
TypeError: Cannot read property 'type' of undefined
    at Function.type (C:\Projects\myApp\node_modules\javascript-obfuscator\dist\webpack:\JavaScriptObfuscator\src\node\NodeGuards.ts:262:21)
    at Function.isObjectPatternNode (C:\Projects\myApp\node_modules\javascript-obfuscator\dist\webpack:\JavaScriptObfuscator\src\node-transformers\converting-transformers\properties-extractors\AbstractPropertiesExtractor.ts:78:27)
    at t.isProhibitedPattern (C:\Projects\myApp\node_modules\javascript-obfuscator\dist\webpack:\JavaScriptObfuscator\src\node-transformers\converting-transformers\properties-extractors\AbstractPropertiesExtractor.ts:112:45)
    at t.extractPropertiesToExpressionStatements (C:\Projects\myApp\node_modules\javascript-obfuscator\dist\webpack:\JavaScriptObfuscator\src\node-transformers\converting-transformers\properties-extractors\AbstractPropertiesExtractor.ts:179:14)
    at transformObjectExpressionNode (C:\Projects\myApp\node_modules\javascript-obfuscator\dist\webpack:\JavaScriptObfuscator\src\node-transformers\converting-transformers\properties-extractors\VariableDeclaratorPropertiesExtractor.ts:42:21)
    at t.extract (C:\Projects\myApp\node_modules\javascript-obfuscator\dist\webpack:\JavaScriptObfuscator\src\node-transformers\converting-transformers\ObjectExpressionKeysTransformer.ts:104:36)
    at transformNode (C:\Projects\myApp\node_modules\javascript-obfuscator\dist\webpack:\JavaScriptObfuscator\src\node-transformers\converting-transformers\ObjectExpressionKeysTransformer.ts:67:33)
    at Controller.visitorFunction (C:\Projects\myApp\node_modules\javascript-obfuscator\dist\webpack:\JavaScriptObfuscator\src\node-transformers\TransformersRunner.ts:111:55)
    at Controller.__execute (C:\Projects\myApp\node_modules\estraverse\estraverse.js:397:31)
    at Controller.replace (C:\Projects\myApp\node_modules\estraverse\estraverse.js:637:27)
error Command failed with exit code 1.

Minimal working example that will help to reproduce issue

Unknown

Issue Analytics

State:
Created 5 years ago
Comments:10 (4 by maintainers)

Top GitHub Comments

1reaction

sanex3339commented, Aug 31, 2018

Hi, i’ll look into this issue but currently i take a 1-2 months timeout with this project to doing renovations on my flat. So, until october i’ll have no time to look into this.

0reactions

Instupelligidentcommented, Feb 23, 2021

Hello. I tried testing this using my application and when trying to use the transformObjectKeys option, I received the same “Cannot read property ‘type’ of undefined” error. Currently, I am using version 2.10.3 but did go through this thread and tried the .16 and .18 before writing this up (I am receiving the error on them all). I was wondering if anyone had the ability to relook into this.