Testing Azure Functions v4 Node & TypeScript with Jest

To write and run tests for Azure Functions with Node / Typescript, we need a bit of extra setup. We’ll start with a new function project with an http trigger and then add the required dependencies:

npm install --save-dev jest typescript ts-jest @types/jest ts-node

I added ts-node as an additional dependency which is not listed in the ts-jest Getting started but required to run the tests.

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