Converting to ES2015, inspired by georgie105

More cleanup

updating linters and more fixes

Updating travis ci and removing lint errors

Updating CI test runner and eslint for console logs

Working on mocha tests, because context is a thing

More mild approach

Updating version and more ES2015 conversion

Author: redaktice

.eslintrc.yml

@@ -1,5 +1,8 @@
 root: true
-extends: standard
+extends:
+  - 'eslint:recommended'
+  - 'plugin:node/recommended'
 rules:
   no-param-reassign: error
   no-shadow: error
+  no-console: off

.travis.yml

@@ -1,16 +1,10 @@
 language: node_js
 node_js:
-  - "0.10"
-  - "0.12"
-  - "1.8"
-  - "2.5"
-  - "3.3"
-  - "4.9"
-  - "5.12"
-  - "6.16"
-  - "7.10"
-  - "8.15"
-  - "9.11"
+  - '8.15'
+  - '9.11'
+  - 10
+  - 11
+  - 12
 matrix:
   fast_finish: true
 sudo: false
@@ -22,33 +16,6 @@ before_install:
   - |
     # Skip updating shrinkwrap / lock
     npm config set shrinkwrap false
-  # Setup Node.js version-specific dependencies
-  - |
-    # eslint for linting
-    # - remove on Node.js < 6
-    if [[ "$(cut -d. -f1 <<< "$TRAVIS_NODE_VERSION")" -lt 6 ]]; then
-      node -pe 'Object.keys(require("./package").devDependencies).join("\n")' | \
-        grep -E '^eslint(-|$)' | \
-        xargs npm rm --save-dev
-    fi
-  - |
-    # mocha for testing
-    # - use 3.x for Node.js < 4
-    # - use 5.x for Node.js < 6
-    if [[ "$(cut -d. -f1 <<< "$TRAVIS_NODE_VERSION")" -lt 4 ]]; then
-      npm install --save-dev mocha@3.5.3
-    elif [[ "$(cut -d. -f1 <<< "$TRAVIS_NODE_VERSION")" -lt 6 ]]; then
-      npm install --save-dev mocha@5.2.0
-    fi
-  - |
-    # supertest for http calls
-    # - use 2.0.0 for Node.js < 4
-    # - use 3.4.2 for Node.js < 6
-    if [[ "$(cut -d. -f1 <<< "$TRAVIS_NODE_VERSION")" -lt 4 ]]; then
-      npm install --save-dev supertest@2.0.0
-    elif [[ "$(cut -d. -f1 <<< "$TRAVIS_NODE_VERSION")" -lt 6 ]]; then
-      npm install --save-dev supertest@3.4.2
-    fi
   # Update Node.js modules
   - |
     # Prune and rebuild node_modules

appveyor.yml

@@ -1,16 +1,10 @@
 environment:
   matrix:
-    - nodejs_version: "0.10"
-    - nodejs_version: "0.12"
-    - nodejs_version: "1.8"
-    - nodejs_version: "2.5"
-    - nodejs_version: "3.3"
-    - nodejs_version: "4.9"
-    - nodejs_version: "5.12"
-    - nodejs_version: "6.16"
-    - nodejs_version: "7.10"
-    - nodejs_version: "8.15"
-    - nodejs_version: "9.11"
+    - nodejs_version: '8.15'
+    - nodejs_version: '9.11'
+    - nodejs_version: '10'
+    - nodejs_version: '11'
+    - nodejs_version: '12'
 cache:
   - node_modules
 install:
@@ -28,25 +22,6 @@ install:
       cmd.exe /c "node -pe `"Object.keys(require('./package').devDependencies).join('\n')`"" | `
         sls "^eslint(-|$)" | `
         %{ npm rm --silent --save-dev $_ }
-  # Setup Node.js version-specific dependencies
-  - ps: |
-      # mocha for testing
-      # - use 3.x for Node.js < 4
-      # - use 5.x for Node.js < 6
-      if ([int]$env:nodejs_version.split(".")[0] -lt 4) {
-        npm install --silent --save-dev mocha@3.5.3
-      } elseif ([int]$env:nodejs_version.split(".")[0] -lt 6) {
-        npm install --silent --save-dev mocha@5.2.0
-      }
-  - ps: |
-      # supertest for http calls
-      # - use 2.0.0 for Node.js < 4
-      # - use 3.4.2 for Node.js < 6
-      if ([int]$env:nodejs_version.split(".")[0] -lt 4) {
-        npm install --silent --save-dev supertest@2.0.0
-      } elseif ([int]$env:nodejs_version.split(".")[0] -lt 6) {
-        npm install --silent --save-dev supertest@3.4.2
-      }
   # Update Node.js modules
   - ps: |
       # Prune & rebuild node_modules
@@ -64,4 +39,4 @@ test_script:
       npm --version
   # Run test script
   - npm run test-ci
-version: "{build}"
+version: '{build}'