Angular 2 Unit Tests: Cannot find name 'describe'
I hope you've installed -
npm install --save-dev @types/jasmineThen put following import at the top of the hero.spec.ts file -
import 'jasmine';It should solve the problem.
With Typescript@2.0 or later you can install types with:
npm install -D @types/jasmineThen import the types automatically using the types option in tsconfig.json:
"types": ["jasmine"],This solution does not require import {} from 'jasmine'; in each spec file.
npm install @types/jasmineAs mentioned in some comments the "types": ["jasmine"] is not needed anymore, all @types packages are automatically included in compilation (since v2.1 I think).
In my opinion the easiest solution is to exclude the test files in your tsconfig.json like:
"exclude": [ "node_modules", "**/*.spec.ts"]This works for me.
Further information in the official tsconfig docs.