Update and polish

.travis.yml

@@ -1,26 +1,19 @@
 ---
 branches:
   only:
-  - master
-  - develop
-  - /^greenkeeper/.*$/
+    - master
+    - develop
+    - /^greenkeeper/.*$/
+    - /^feature/.*$/
 language: node_js
 node_js:
   - stable
+  - 10
   - 9
   - 8
-sudo: false
-notifications:
-  webhooks:
-    urls:
-      - https://webhooks.gitter.im/e/d0418713e51ac049564a
-    on_success: always
-    on_failure: change
-    on_start: never
 env:
   global:
     - CC_TEST_REPORTER_ID=21230ba3bdbb39a3c727e3108d571aab3de79a8f454f742b7adb13e4a816316a
-    - secure: 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
 before_install:
   - '[[ $(node -v) =~ ^v10.*$ ]] || npm install -g npm@latest'
   - npm install -g greenkeeper-lockfile

gulpfile.js

@@ -1,9 +1,11 @@
 const gulp = require('gulp')
 const rename = require('gulp-rename')
 const rollup = require('gulp-better-rollup')
+const resolve = require('rollup-plugin-node-resolve')
+const commonjs = require('rollup-plugin-commonjs')
 const babel = require('rollup-plugin-babel')
 
-const external = ['read-pkg-up']
+const external = id => !id.startsWith('.') && !id.startsWith('/') && !id.startsWith('\0')
 
 const babelConfig = {
 	presets: [
@@ -22,7 +24,7 @@ gulp.task('cjs', () =>
 	gulp.src('src/index.js')
 		.pipe(rollup({
 			external,
-			plugins: [babel(babelConfig)]
+			plugins: [resolve(), commonjs(), babel(babelConfig)]
 		}, {
 			format: 'cjs'
 		}))
@@ -33,7 +35,7 @@ gulp.task('es6', () =>
 	gulp.src('src/index.js')
 		.pipe(rollup({
 			external,
-			plugins: [babel(babelConfig)]
+			plugins: [resolve(), commonjs(), babel(babelConfig)]
 		}, {
 			format: 'es'
 		}))