chore: prep repo for node.js v10 EOL (#7359)

.github/workflows/nodejs.yml

@@ -15,15 +15,22 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [10.13.x, 10.x, 12.x, 14.x]
+        node-version: [12.x, 14.x, 16.x]
 
     steps:
     - uses: actions/checkout@v2
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v1
+      uses: actions/setup-node@v2
       with:
         node-version: ${{ matrix.node-version }}
+    - name: Cache Node Modules
+      id: cache-node-modules
+      uses: actions/cache@v2
+      with:
+        path: node_modules
+        key: node-modules-${{ hashFiles('package-lock.json') }}
     - name: Install dependencies
+      if: steps.cache-node-modules.outputs.cache-hit != 'true'
       run: npm ci
     - name: Lint code for errors only
       run: npm run lint-errors
@@ -37,12 +44,12 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [10.x, 12.x, 14.x]
+        node-version: [12.x, 14.x, 16.x]
 
     steps:
     - uses: actions/checkout@v2
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v1
+      uses: actions/setup-node@v2
       with:
         node-version: ${{ matrix.node-version }}
     - name: Install dependencies
@@ -58,6 +65,6 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: Use Node.js
-      uses: actions/setup-node@v1
+      uses: actions/setup-node@v2
       with:
         node-version: 14.x

.nvmrc

@@ -0,0 +1 @@
+14.17

docs/development/setting-up.md

@@ -5,21 +5,22 @@ Swagger UI includes a development server that provides hot module reloading and
 ### Prerequisites
 
 - git, any version
-- NPM 6.x
+- NPM >=6.12.x
 
 Generally, we recommend the following guidelines from [Node.js Releases](https://nodejs.org/en/about/releases/) to only use Active LTS or Maintenance LTS releases.
 
+Current Node.js:
+- Node.js 16.x
+- NPM >=7.10.x
+
 Current Node.js Active LTS:
-- Node.js 12.x
-- NPM 6.x
+- Node.js 14.x
+- NPM >=6.12.x
 
 Current Node.js Maintenance LTS:
-- Node.js 10.x
-- NPM 6.x
+- Node.js 12.x
+- NPM >= 6.12.x
 
-Unsupported Node.js LTS that should still work:
-- Node.js 8.13.0 or greater
-- NPM 6.x
 
 ### Steps