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Jest Image from https://jestjs.io/Jest is a delightful Javascript Testing Framework created by Facebook. It’s used extensively by lots of companies, including us — Walmart Online Grocery.We started using Jest a long time ago(version 18), but we didn’t have a chance to upgrade it until recently. Since v18 is an outdated version, and we lack many major new features due to this, we plan to start this upgrade: from v18 to v23.I was tasked with upgrading from v18 to the latest v23. Since I could not ...