Drop support for node v8 (#2350)

- Update dependencies
- Fix issues

Co-authored-by: Roberto Huertas <roberto.huertas@outlook.com>

.appveyor.yml

@@ -7,9 +7,9 @@ environment:
   # Define versions of Node.js
   matrix:
     - node_js: ''      # latest node
-    - node_js: 10.11.0 # vscode >= 1.36.0
+    - node_js: 12.4.0  # vscode >= 1.40.0
+    - node_js: 10.11.0 # vscode >= 1.36.0 < 1.40.0
     - node_js: 10.2.0  # vscode >= 1.31.0 < 1.36.0
-    - node_js: 8.9.3   # vscode >= 1.26.0 < 1.31.0
 matrix:
   fast_finish: true
   allow_failures:
@@ -18,7 +18,7 @@ matrix:
 platform:
   - x64
 cache:
-  # - node_modules
+  - node_modules
 init:
   # Install the platform version of Node.js
   - ps: Install-Product node $env:node_js $env:platform

.travis.yml

@@ -4,9 +4,9 @@ os:
   - osx
 node_js:
   - node    # latest node
-  - 10.11.0 # vscode >= 1.36.0
+  - 12.4.0  # vscode >= 1.40.0
+  - 10.11.0 # vscode >= 1.36.0 < 1.40.0
   - 10.2.0  # vscode >= 1.31.0 < 1.36.0
-  - 8.9.3   # vscode >= 1.26.0 < 1.31.0
 git:
   depth: 5
   submodules: false
@@ -48,7 +48,7 @@ jobs:
     - stage: publish
       if: repo =~ ^vscode-icons AND tag IS present AND type = push
       os: linux
-      node_js: 8.9.3
+      node_js: 10.2.0
       install:
         - npm run preinstall
         - npm i vsce --no-save

README.md

@@ -22,7 +22,7 @@
 
 ---
 
-Bring icons to your [Visual Studio Code](https://code.visualstudio.com/) (**minimum supported version: `1.26.1`**)
+Bring icons to your [Visual Studio Code](https://code.visualstudio.com/) (**minimum supported version: `1.31.1`**)
 
 ![demo](https://raw.githubusercontent.com/vscode-icons/vscode-icons/master/images/screenshot.gif)