My current versions of node and npm are:
node --version
v10.15.3
npm --version
6.9.0
An error message I encountered is as follows:
ERROR in src/app/model/testing/index.ts(1,15): error TS2307: Cannot find module './fake-hero.service'.
src/testing/jasmine-matchers.d.ts(3,67): error TS2694: Namespace 'jasmine' has no exported member 'CustomMatcher'.
src/testing/jasmine-matchers.ts(7,3): error TS2708: Cannot use namespace 'jasmine' as a value.
src/testing/jasmine-matchers.ts(12,32): error TS2694: Namespace 'jasmine' has no exported member 'CustomMatcher'.
src/testing/jasmine-matchers.ts(14,97): error TS2694: Namespace 'jasmine' has no exported member 'CustomMatcherResult'.
The issue was resolved by commenting out the following line in the file src/app/model/testing/index.ts:
//export * from './fake-hero.service';
Although it initially appeared to be related to jasmine and CustomMatcher, further investigation revealed that wasn't the case.
Interestingly, stopping the server and running ng serve resulted in another jasmin related error. However, simply adding a space in the commented line within the file (index.ts) allowed successful compilation!
Below are my devDependencies:
"devDependencies": {
"@angular-devkit/build-angular": "^0.11.0",
"@angular/cli": "^7.1.0",
"@angular/compiler-cli": "^7.1.0",
"@angular/platform-server": "^7.1.0",
"@types/jasmine": "~2.8.8",
"@types/jasminewd2": "^2.0.4",
"@types/node": "~8.9.4",
"jasmine-core": "~2.99.1",
"jasmine-marbles": "^0.4.0",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~3.0.0",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "~2.0.1",
"karma-jasmine": "~1.1.2",
"karma-jasmine-html-reporter": "^0.2.2",
"lodash": "^4.16.2",
"protractor": "~5.4.0",
"ts-node": "~7.0.0",
"tslint": "~5.11.0",
"typescript": "~3.1.1"
}