chore(deps): Upgrade node and yarn version requirements

.nvmrc

@@ -0,0 +1 @@
+lts/erbium

.travis.yml

@@ -1,6 +1,6 @@
 language: node_js
 node_js:
-    - '10'
+    - '12'
 addons:
     apt:
         packages:
@@ -11,7 +11,7 @@ cache:
         - node_modules
         - ~/.cache/Cypress
 before_install:
-    - curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --version 1.13.0
+    - curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --version 1.19.1
     - export PATH=$HOME/.yarn/bin:$PATH
 jobs:
     include:

README.md

@@ -375,7 +375,7 @@ preview.addListener('rotate', data => {
 
 ## Development Setup
 
-1. Install latest LTS version of Node v8.9.4 or higher.
+1. Install latest LTS version of Node `https://nodejs.org/en/download`.
 2. Install yarn package manager `https://yarnpkg.com/en/docs/install`. Alternatively, you can replace any `yarn` command with `npm`.
 3. Fork the upstream repo `https://github.com/box/box-content-preview`.
 4. Clone your fork locally `git clone git@github.com:[YOUR GITHUB USERNAME]/box-content-preview.git`.

package.json

@@ -85,7 +85,7 @@
         "mock-local-storage": "^1.0.2",
         "mojito-rb-gen": "^0.0.1",
         "node-noop": "^1.0.0",
-        "node-sass": "4.9.3",
+        "node-sass": "4.13.1",
         "npm-run-all": "^4.1.5",
         "optimize-css-assets-webpack-plugin": "^5.0.3",
         "phantomjs-prebuilt": "^2.1.16",
@@ -116,8 +116,8 @@
         "webpack-dev-server": "^3.7.2"
     },
     "engines": {
-        "node": ">=8.9.4",
-        "yarn": ">=1.10.0"
+        "node": ">=10.x",
+        "yarn": ">=1.19.x"
     },
     "scripts": {
         "build": "yarn setup && yarn clean && yarn build:i18n && yarn build:dev",