Include working coverage script (#2997)

* Include working coverage script

* Increase timeouts for CLI tests

* Run coverage on CI

* Fix typo

* Remove solo test

* Run codecov on CI

* Simplify setup as it appears special instrumentation is not really necessary for nyc
(and we could have had this much earlier...)

.circleci/config.yml

@@ -54,7 +54,13 @@ jobs:
   node-v12-latest:
     docker:
       - image: rollupcabal/circleci-node-v12:latest
-    <<: *unit_tests_12
+    steps:
+      - checkout
+      - restore_cache:
+          key: dependency-cache-{{ checksum "package-lock.json" }}
+      - run:
+          name: Run tests with coverage.
+          command: npm run ci:coverage
 
 workflows:
   version: 2

.gitignore

@@ -8,8 +8,10 @@ coverage
 .commithash
 .idea
 bin/rollup
+bin/rollup.map
 test/_tmp
 test/hooks/tmp
 test/tmp
 test/typescript/typings
 perf/
+.nyc_output/

.nycrc

@@ -0,0 +1,4 @@
+{
+  "exclude": ["*commonjsHelpers.js", "test"],
+  "extension": [".ts", ""]
+}