test: add coverage

.gitignore

@@ -335,7 +335,6 @@ src/**/*.js
 !src/__mocks__/*.js
 src/**/*.js.map
 src/**/*.d.ts
-!src/@types/progress.d.ts
 lib/**/*
 
 # IDEs
@@ -355,3 +354,4 @@ yarn.lock
 .DS_Store
 
 out/
+coverage/

.npmignore

@@ -2,3 +2,4 @@
 *.test.json
 __mocks__
 __tests__
+coverage/

package.json

@@ -16,6 +16,7 @@
     "format:check": "prettier -l \"./src/**/*.{json,ts}\"",
     "test:jest": "jest",
     "test:jest:watch": "jest --watch",
+    "test:coverage": "jest --coverage",
     "copy:builders:json": "cp ./src/builders/*.json ./out/builders",
     "copy:ngadd:json": "cp ./src/ng-add/*.json ./out/ng-add"
   },