unit testing - Jest Mocking node_modules With Nested File -


i trying mock 3rd party library (in node_modules) nested in sub-directory. have created mock in __mocks__/@exponent/ex-navigation. sits @ top level next node_modules dir.

i setup mock within test file via jest.mock('@exponent/ex-navigation');.

for reason can't use mock file. think has @exponent subdirectory. if change simple fs works.

it appears jest not support mocking scoped packages (more info here). have 2 options.

1. define mock inline

jest.mock('@exponent/ex-navigation', () => {   return {     // mocked exports   }; }); 

2. manually map mock location in jest config

{   ...   "modulenamemapper": [     "@exponent/ex-navigation": "<rootdir>/__mocks__/@exponent/ex-navigation"     ...   ] } 

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