Usage from Jest in Typescript

The documentation mentions adding the following to spec files to get the added matchers:

import JasmineExpect from 'jasmine-expect';

However this does not work as expected with my combination of packages (should be current latest at time of writing):

• typescript: 2.8.3
• jest: 22.4.3
• jasmine-expect: 3.8.3

The snippet above gives the error: “…/node_modules/jasmine-expect/jasmine-matchers.d.ts is not a module”. If I copy the .d.ts file into my repo root folder and change the namespace declaration from jasmine to jest and remove the import statement, then the problem goes away.

I’m not actually sure how this should be resolved, short of repeating the declare namespace for jasmine and jest. Personally, I think it’s a little silly that jest is “rebranding” the jasmine namespace 😕

[jelling]

Please update the homepage to include the example code provided by LarsImNetz, specifcally using import "jasmine-expect";. Also it is no longer necessary to get the @types since they’re included.

[JamieMason]

perfect 👍