fix coverage report & update scripts

.travis.yml

@@ -12,5 +12,4 @@ matrix:
 
 cache: npm
 
-script:
-  - npm run coverage
+after_success: npm run coverage

package.json

@@ -8,9 +8,8 @@
     "scripts": {
         "build": "pika build --out dist/",
         "prepublishOnly": "npm run build",
-        "test": "cross-env BABEL_ENV=test mocha --require @babel/register --throw-deprecation test/*.js",
-        "report": "cross-env BABEL_ENV=coverage nyc --reporter lcov --reporter text mocha -R spec test/*.js",
-        "coverage": "cross-env BABEL_ENV=coverage nyc --reporter json --reporter text mocha -R spec test/*.js && codecov -f coverage/coverage-final.json",
+        "test": "nyc --reporter=html --reporter=text mocha --require @babel/register --throw-deprecation",
+        "coverage": "nyc report --reporter=text-lcov | coveralls",
         "lint": "xo"
     },
     "repository": {
@@ -36,17 +35,18 @@
         "@babel/core": "^7.9.0",
         "@babel/preset-env": "^7.9.5",
         "@babel/register": "^7.9.0",
+        "@istanbuljs/nyc-config-babel": "^3.0.0",
         "@pika/pack": "^0.5.0",
         "@pika/plugin-build-node": "^0.9.2",
         "@pika/plugin-standard-pkg": "^0.9.2",
         "abort-controller": "^3.0.0",
         "abortcontroller-polyfill": "^1.4.0",
+        "babel-plugin-istanbul": "^6.0.0",
         "chai": "^4.2.0",
         "chai-as-promised": "^7.1.1",
         "chai-iterator": "^3.0.2",
         "chai-string": "^1.5.0",
-        "codecov": "^3.6.5",
-        "cross-env": "^7.0.2",
+        "coveralls": "^3.0.11",
         "form-data": "^3.0.0",
         "mocha": "^7.1.1",
         "nyc": "^15.0.1",
@@ -62,8 +62,12 @@
     },
     "@pika/pack": {
         "pipeline": [
-			["@pika/plugin-standard-pkg"],
-			["@pika/plugin-build-node"]
+            [
+                "@pika/plugin-standard-pkg"
+            ],
+            [
+                "@pika/plugin-build-node"
+            ]
         ]
     },
     "xo": {
@@ -115,14 +119,13 @@
                     }
                 }
             ]
+        ],
+        "plugins": [
+            "istanbul"
         ]
     },
     "nyc": {
-        "require": [
-            "@babel/register"
-        ],
-        "sourceMap": false,
-        "instrument": false
+        "extends": "@istanbuljs/nyc-config-babel"
     },
     "runkitExampleFilename": "example.js"
 }