How do you use Istanbul Code Coverage with transpiled Typescript?

Question

I\'ve been reading articles on this all morning trying to get my environment setup correctly. But for some reason I\'m not getting it. My setup-

/app
    ... sou         


        

Answer 1

As blakeembrey mentioned. Istanbul 1.x handles it well.

Below an example of pure npm script that does it with Jasmine.

See https://github.com/Izhaki/Typescript-Jasmine-Istanbul-Boilerplate.

package.json (the relevant stuff)

{
  "scripts": {
    "postinstall": "typings install dt~jasmine --save --global",
    "test": "ts-node node_modules/.bin/jasmine JASMINE_CONFIG_PATH=jasmine.json",
    "test:coverage": "ts-node node_modules/istanbul/lib/cli.js cover -e .ts  -x \"*.d.ts\" -x \"*.spec.ts\" node_modules/jasmine/bin/jasmine.js -- JASMINE_CONFIG_PATH=jasmine.json"
  },
  "devDependencies": {
    "istanbul": "^1.1.0-alpha.1",
    "jasmine": "^2.4.1",
    "ts-node": "^0.9.3",
    "typescript": "^1.8.10",
    "typings": "^1.3.1"
  },
}

Output