The package ts-deepmerge before 2.0.2 are vulnerable to Prototype Pollution due to missing sanitization of the merge function.
https://security.snyk.io/vuln/SNYK-JS-TSDEEPMERGE-2959975
https://github.com/voodoocreation/ts-deepmerge/releases/tag/2.0.2
https://github.com/voodoocreation/ts-deepmerge/commit/9be5148773343c57be9de39728d6ead18eddf10b