Updated travis to run mutations on changed files only

.scrutinizer.yml

@@ -1,5 +1,6 @@
 build:
   environment:
-    node: v10.4.1
+    node: v10.15.3
 tools:
-  external_code_coverage: true
+  external_code_coverage:
+    timeout: 1200

.travis.yml

@@ -13,11 +13,14 @@ services:
 install:
   - npm ci
 
+before_script:
+  - export MUTATION_FILES=$(git diff ${TRAVIS_COMMIT_RANGE:-origin/master} --name-only | grep src/ | paste -sd ",")
+
 script:
   - npm run lint
   - npm run test:ci
   - if [[ -z $TRAVIS_TAG ]]; then docker build -t shlink-web-client:test . ; fi
-  - if [[ -z $TRAVIS_TAG ]]; then npm run mutate ; fi
+  - if [[ -z $TRAVIS_TAG ]]; then npm run mutate:ci ; fi
 
 after_success:
   - node_modules/.bin/ocular coverage/clover.xml

package.json

@@ -16,7 +16,8 @@
     "test": "node scripts/test.js --env=jsdom --colors",
     "test:ci": "npm run test -- --coverage --coverageReporters=text --coverageReporters=text-summary --coverageReporters=clover",
     "test:pretty": "npm run test -- --coverage --coverageReporters=text --coverageReporters=text-summary --coverageReporters=html",
-    "mutate": "./node_modules/.bin/stryker run"
+    "mutate": "./node_modules/.bin/stryker run",
+    "mutate:ci": "npm run mutate -- --mutate=$MUTATION_FILES"
   },
   "dependencies": {
     "@fortawesome/fontawesome-free": "^5.6.3",

stryker.conf.js

@@ -1,15 +1,10 @@
 const jestConfig = require(`${__dirname}/jest.config.js`);
 
-// reporters: clear-text
-
 module.exports = (config) => config.set({
   mutate: jestConfig.collectCoverageFrom,
-  mutator: {
-    name: 'javascript',
-    excludedMutations: [ 'BooleanSubstitution', 'StringLiteral' ],
-  },
+  mutator: 'javascript',
   testRunner: 'jest',
-  reporters: [ 'progress' ],
+  reporters: [ 'progress', 'clear-text' ],
   coverageAnalysis: 'off',
   jest: {
     projectType: 'custom',
@@ -21,4 +16,7 @@ module.exports = (config) => config.set({
     low: 60,
     break: null,
   },
+  clearTextReporter: {
+    logTests: false,
+  },
 });