Upgrade dependencies

Some changes were necesssary after upgrading babel deps:

 - preset-stage-3 has been removed because it is deprecated. Instead
 the separate proposals which are necessary for typescript were added
 - removed some configuration from the transform-runtime plugin that
 were already the default

Some changes were necessary after upgrading TypeScript:
 - Declarations output is now a temporary directory, after which the
 files are copied to their final destination using shx. This is
 because TypeScript adds the output directory of a build to the
 excludes array, which causes issues when the output directory is
 the root of the repository

Other updates:
 - The minimum node version was bumped from 6 to 8

.babelrc

@@ -3,21 +3,20 @@
     ["@babel/env", {
       "targets": {
         "browsers": ["last 2 versions"],
-        "node": "6"
+        "node": "8"
       },
       "loose": true,
       "useBuiltIns": false
     }],
-    "@babel/preset-stage-3",
     "@babel/typescript"
   ],
   "plugins": [
     ["@babel/plugin-transform-runtime", {
       "helpers": true,
-      "polyfill": false,
-      "regenerator": false,
-      "moduleName": "@babel/runtime"
-    }]
+      "regenerator": false
+    }],
+    "@babel/proposal-class-properties",
+    "@babel/proposal-object-rest-spread"
   ],
   "env": {
     "test": {

.gitignore

@@ -11,6 +11,7 @@ node_modules/
 /coverage/
 /.nyc_output/
 /tmp/
+/decl/
 
 ## only ignore in git
 /lib

.npmignore

@@ -10,6 +10,7 @@ node_modules/
 /coverage/
 /.nyc_output/
 /tmp/
+/decl/
 
 # .npmignore
 .babelrc

.travis.yml

@@ -4,7 +4,6 @@ cache: yarn
 
 node_js:
   - 'stable'
-  - '6'
   - '8'
   - '10'
 

package.json

@@ -12,7 +12,7 @@
     "dev:ts": "tsc --noEmit --allowJs --watch",
     "build": "npm-run-all -s clean build:*",
     "build:babel": "babel ./src -x \".ts\" -x \".js\" --out-dir ./",
-    "build:ts": "tsc -p ./tsconfig.build.json",
+    "build:ts": "tsc -p ./tsconfig.build.json && shx cp -Rf decl/* .",
     "test": "cross-env NODE_ENV=test nyc --all mocha \"./test/**/*.spec.{ts,js}\"",
     "test:dev": "mocha -w --watch-extensions ts,js \"./test/**/*.spec.{ts,js}\"",
     "clean": "npm-run-all clean:*",
@@ -59,13 +59,14 @@
     "url": "https://github.com/mediamonks/seng-boilerplate.git"
   },
   "devDependencies": {
-    "@babel/cli": "^7.0.0-beta.35",
-    "@babel/core": "^7.0.0-beta.35",
-    "@babel/plugin-transform-runtime": "^7.0.0-beta.35",
-    "@babel/preset-env": "^7.0.0-beta.35",
-    "@babel/preset-stage-3": "^7.0.0-beta.35",
-    "@babel/preset-typescript": "^7.0.0-beta.35",
-    "@babel/register": "^7.0.0-beta.35",
+    "@babel/cli": "^7.5.0",
+    "@babel/core": "^7.5.0",
+    "@babel/plugin-proposal-class-properties": "^7.5.0",
+    "@babel/plugin-proposal-object-rest-spread": "^7.5.2",
+    "@babel/plugin-transform-runtime": "^7.5.0",
+    "@babel/preset-env": "^7.5.2",
+    "@babel/preset-typescript": "^7.3.3",
+    "@babel/register": "^7.4.4",
     "@types/chai": "^4.0.10",
     "@types/mocha": "^2.2.44",
     "@types/sinon": "^4.1.2",
@@ -98,9 +99,9 @@
     "tslint-config-airbnb": "^5.4.2",
     "tslint-config-prettier": "^1.6.0",
     "typedoc": "^0.9.0",
-    "typescript": "^2.6.2"
+    "typescript": "^3.5.3"
   },
   "dependencies": {
-    "@babel/runtime": "^7.0.0-beta.35"
+    "@babel/runtime": "^7.5.2"
   }
 }

src/lib/Dummy.ts

@@ -19,6 +19,6 @@ export default class Dummy {
     if (typeof str === 'undefined') {
       return 'baz';
     }
-    return str + 'bar';
+    return `${str}bar`;
   }
 }

src/lib/Example.ts

@@ -15,6 +15,6 @@ export default class Example {
     if (typeof str === 'undefined') {
       return 'baz';
     }
-    return str + 'bar';
+    return `${str}bar`;
   }
 }

test/_setup/setup.js

@@ -1,5 +1,5 @@
-require("@babel/register")({
+require('@babel/register')({
   // Setting this will remove the currently hooked extensions of .es6, `.es`, `.jsx`
   // and .js so you'll have to add them back if you want them to be used again.
-  extensions: [".es6", ".es", ".jsx", ".js", ".ts"],
+  extensions: ['.es6', '.es', '.jsx', '.js', '.ts'],
 });

tsconfig.build.json

@@ -4,6 +4,8 @@
     "allowJs": false,
     "outDir": "tmp",
     "declaration": true,
-    "declarationDir": "./"
+    "declarationDir": "./decl",
+    "baseUrl": ".",
+    "emitDeclarationOnly": true
   }
 }