fix: add script file

.travis.yml

@@ -7,11 +7,8 @@ notifications:
   email: false
 node_js:
   - '8'
-script:
-  - npm run validate
-after_success:
-  - npx codecov
-  - npx -p semantic-release@7 -c "semantic-release pre && npm publish && semantic-release post"
+script: npm run validate
+after_success: node src travis-after-success
 branches:
   only:
     - master

src/scripts/travis-after-success.js

@@ -0,0 +1,16 @@
+const spawn = require('cross-spawn')
+const {resolveBin, getConcurrentlyArgs} = require('../utils')
+
+const result = spawn.sync(
+  resolveBin('concurrently'),
+  getConcurrentlyArgs(
+    {
+      codecov: `echo installing codecov && npx -p codecov -c 'echo running codecov && codecov'`,
+      release: `echo installing semantic-release && npx -p semantic-release@8 -c 'echo running semantic-release && semantic-release pre && npm publish && semantic-release post'`,
+    },
+    {killOthers: false},
+  ),
+  {stdio: 'inherit'},
+)
+
+process.exit(result.status)