upgrade minimum nodejs version, yarn dev deps

Looks like I basically had to do this to keep up. With nodejs version 12
(current LTS), the version of fsevents I installed wouldn't build. A
"yarn upgrade" by itself resulted in a new problem as described in #69.
Conversely, the new versions don't install with nodejs 8. So I bit the
bullet and upgraded all the dev dependency stuff and the nodejs at once.
nodejs 10 seems capable of running either the old or new, fwiw.

I'm a little sad that this seems to have made the UI bundle 5% larger.
Before, "yarn build" said 350 KiB. After, 369 KiB. A little bit in
several places. For example, jquery-ui.bundle.js went from 156 KiB (in
2 chunks) to 160 KiB (in 1 chunk) for some reason.

.travis.yml

@@ -33,7 +33,7 @@ matrix:
         - yarn build
         - node_modules/eslint/bin/eslint.js ui-src
     - language: node_js
-      node_js: "8"
+      node_js: "lts/*"
       script:
         - yarn
         - yarn build

package.json

@@ -18,23 +18,23 @@
   "repository": "scottlamb/moonfire-nvr",
   "version": "0.1.0",
   "devDependencies": {
-    "babel-core": "^6.26.0",
-    "babel-loader": "^7.1.4",
-    "babel-plugin-transform-imports": "^1.5.0",
-    "babel-preset-env": "^1.6.1",
-    "clean-webpack-plugin": "^0.1.18",
-    "compression-webpack-plugin": "^1.1.10",
-    "css-loader": "^0.28.10",
-    "eslint": "^4.18.2",
-    "eslint-config-google": "^0.9.1",
-    "file-loader": "^1.1.11",
+    "@babel/core": "^7.8.6",
+    "@babel/preset-env": "^7.8.6",
+    "babel-loader": "^8.0.6",
+    "babel-plugin-transform-imports": "^2.0.0",
+    "clean-webpack-plugin": "^3.0.0",
+    "compression-webpack-plugin": "^3.1.0",
+    "css-loader": "^3.4.2",
+    "eslint": "^6.8.0",
+    "eslint-config-google": "^0.14.0",
+    "file-loader": "^5.1.0",
     "html-loader": "^0.5.5",
-    "html-webpack-plugin": "^3.0.6",
-    "prettier": "1.11.1",
-    "style-loader": "^0.19.0",
-    "webpack": "^4.0.1",
-    "webpack-cli": "^2.0.10",
-    "webpack-dev-server": "^3.1.0",
-    "webpack-merge": "^4.1.2"
+    "html-webpack-plugin": "^3.2.0",
+    "prettier": "1.19.1",
+    "style-loader": "^1.1.3",
+    "webpack": "^4.41.6",
+    "webpack-cli": "^3.3.11",
+    "webpack-dev-server": "^3.10.3",
+    "webpack-merge": "^4.2.2"
   }
 }

scripts/script-functions.sh

@@ -37,7 +37,7 @@ fi
 
 # Useful constants
 #
-NODE_MIN_VERSION="8"
+NODE_MIN_VERSION="10"
 YARN_MIN_VERSION="1.0"
 CARGO_MIN_VERSION="0.2"
 RUSTC_MIN_VERSION="1.40"

webpack/base.config.js

@@ -49,10 +49,17 @@ module.exports = {
         test: /\.js$/,
         loader: 'babel-loader',
         query: {
-          presets: ['env', {modules: false}],
+          presets: [
+            ['@babel/preset-env', {
+              targets: {
+                esmodules: true,
+              },
+              modules: false
+            }]
+          ],
         },
         exclude: /(node_modules|bower_components)/,
-        include: ['./ui-src'],
+        include: [path.resolve('./ui-src')],
       },
       {
         test: /\.png$/,

webpack/prod.config.js

@@ -35,7 +35,7 @@ const CompressionPlugin = require('compression-webpack-plugin');
 const baseConfig = require('./base.config.js');
 const merge = require('webpack-merge');
 
-const CleanWebpackPlugin = require('clean-webpack-plugin');
+const { CleanWebpackPlugin } = require('clean-webpack-plugin');
 
 module.exports = (env, args) => {
   return merge(baseConfig, {
@@ -88,7 +88,7 @@ module.exports = (env, args) => {
     plugins: [
       new CleanWebpackPlugin(),
       new CompressionPlugin({
-        asset: '[path].gz[query]',
+        filename: '[path].gz[query]',
         algorithm: 'gzip',
         test: /\.js$|\.css$|\.html$/,
         threshold: 10240,