[BREAKING CHANGE] Require Node.js >= 10

- Several deps started requiring it
- CI started breaking on Node 8
- Node 8 is end-of-life, no longer maintained
- Even latest Debian stable and Ubuntu LTS ship Node 10:
    https://packages.debian.org/search?suite=stable&keywords=nodejs
    https://packages.ubuntu.com/search?searchon=names&suite=all&section=all&keywords=nodejs

So, requiring Node 10 and npm 6 going with it.

.travis.yml

@@ -4,15 +4,15 @@ os:
 - osx
 - windows
 node_js:
-- '13'
-- '12' # Changing this? Remind to keep linter+deploy conditions below aligned
-- '8'
+- '14' # Changing this? Remind to keep linter+deploy conditions below aligned
+- '12'
+- '10'
 install:
 - npm run dev-up
 - npm run build
 script:
 # Only run linter once, for faster CI. Remind to keep linter+deploy conditions below aligned
-- if [ "$TRAVIS_OS_NAME" = "linux" ] && [ "$TRAVIS_NODE_VERSION" = "12" ]; then npm run lint; fi
+- if [ "$TRAVIS_OS_NAME" = "linux" ] && [ "$TRAVIS_NODE_VERSION" = "14" ]; then npm run lint; fi
 - npm test
 # https://docs.travis-ci.com/user/deployment
 deploy:
@@ -24,5 +24,5 @@ deploy:
   on:
     tags: true
     repo: jiahaog/nativefier
-    node_js: '12' # Remind to keep linter+deploy conditions above aligned
+    node_js: '14' # Remind to keep linter+deploy conditions above aligned
     condition: '$TRAVIS_OS_NAME = linux'

package.json

@@ -5,8 +5,8 @@
   "license": "MIT",
   "author": "Goh Jia Hao",
   "engines": {
-    "node": ">= 8.10.0",
-    "npm": ">= 5.6.0"
+    "node": ">= 10.0.0",
+    "npm": ">= 6.0.0"
   },
   "keywords": [
     "desktop",
@@ -84,7 +84,7 @@
     "jest": "26.x",
     "prettier": "2.x",
     "rimraf": "3.x",
-    "ts-loader": "6.x",
+    "ts-loader": "7.x",
     "typescript": "3.x",
     "webpack": "4.x",
     "webpack-cli": "3.x"