Information on Typescript module files here NodeJS TypeScript.
Add "jasmine", "jasmine-browser-runner", "typescript"
to your package.json
then npm install
If you are adding this into an existing project then you will need the tsconfig.json
npm test
to run the tests in the console for example in CI.
npx jasmine-browser-runner serve
to run the tests in the browser runner
If everything is running fine you should see Jasmine Browser Runner at localhost:8888