[Tests] up to node v8.1, v7.10, v6.11, v4.8; newer npm fails on older nodes

Author: ljharb

.travis.yml

@@ -2,10 +2,11 @@ language: node_js
 os:
  - linux
 node_js:
-  - "7.5"
-  - "6.9"
+  - "8.1"
+  - "7.10"
+  - "6.11"
   - "5.12"
-  - "4.7"
+  - "4.8"
   - "iojs-v3.3"
   - "iojs-v2.5"
   - "iojs-v1.8"
@@ -14,7 +15,9 @@ node_js:
   - "0.8"
 before_install:
   - 'if [ "${TRAVIS_NODE_VERSION}" = "0.6" ]; then npm install -g [email protected] ; elif [ "${TRAVIS_NODE_VERSION}" != "0.9" ]; then case "$(npm --version)" in 1.*) npm install -g [email protected] ;; 2.*) npm install -g npm@2 ;; esac ; fi'
-  - 'if [ "${TRAVIS_NODE_VERSION}" != "0.6" ] && [ "${TRAVIS_NODE_VERSION}" != "0.9" ]; then npm install -g npm; fi'
+  - 'if [ "${TRAVIS_NODE_VERSION%${TRAVIS_NODE_VERSION#[0-9]}}" = "0" ] || [ "${TRAVIS_NODE_VERSION:0:4}" = "iojs" ]; then npm install -g [email protected] ; elif [ "${TRAVIS_NODE_VERSION}" != "0.6" ] && [ "${TRAVIS_NODE_VERSION}" != "0.9" ]; then npm install -g npm; fi'
+install:
+  - 'if [ "${TRAVIS_NODE_VERSION}" = "0.6" ]; then nvm install 0.8 && npm install -g [email protected] && npm install -g [email protected] && npm install -g npm@2 && npm install && nvm use "${TRAVIS_NODE_VERSION}"; else npm install; fi;'
 script:
   - 'if [ -n "${PRETEST-}" ]; then npm run pretest ; fi'
   - 'if [ -n "${POSTTEST-}" ]; then npm run posttest ; fi'
@@ -30,6 +33,18 @@ matrix:
       env: PRETEST=true
     - node_js: "node"
       env: POSTTEST=true
+    - node_js: "8.0"
+      env: TEST=true ALLOW_FAILURE=true
+    - node_js: "7.9"
+      env: TEST=true ALLOW_FAILURE=true
+    - node_js: "7.8"
+      env: TEST=true ALLOW_FAILURE=true
+    - node_js: "7.7"
+      env: TEST=true ALLOW_FAILURE=true
+    - node_js: "7.6"
+      env: TEST=true ALLOW_FAILURE=true
+    - node_js: "7.5"
+      env: TEST=true ALLOW_FAILURE=true
     - node_js: "7.4"
       env: TEST=true ALLOW_FAILURE=true
     - node_js: "7.3"
@@ -40,6 +55,10 @@ matrix:
       env: TEST=true ALLOW_FAILURE=true
     - node_js: "7.0"
       env: TEST=true ALLOW_FAILURE=true
+    - node_js: "6.10"
+      env: TEST=true ALLOW_FAILURE=true
+    - node_js: "6.9"
+      env: TEST=true ALLOW_FAILURE=true
     - node_js: "6.8"
       env: TEST=true ALLOW_FAILURE=true
     - node_js: "6.7"
@@ -82,6 +101,8 @@ matrix:
       env: TEST=true ALLOW_FAILURE=true
     - node_js: "5.0"
       env: TEST=true ALLOW_FAILURE=true
+    - node_js: "4.7"
+      env: TEST=true ALLOW_FAILURE=true
     - node_js: "4.6"
       env: TEST=true ALLOW_FAILURE=true
     - node_js: "4.5"
@@ -136,30 +157,30 @@ matrix:
       env: TEST=true ALLOW_FAILURE=true
     - node_js: "0.4"
       env: TEST=true ALLOW_FAILURE=true
-    - node_js: "7"
-      env: TEST=true
-      os: osx
-    - node_js: "6"
-      env: TEST=true
-      os: osx
-    - node_js: "5"
-      env: TEST=true
-      os: osx
-    - node_js: "4"
-      env: TEST=true
-      os: osx
-    - node_js: "iojs"
-      env: TEST=true
-      os: osx
-    - node_js: "0.12"
-      env: TEST=true
-      os: osx
-    - node_js: "0.10"
-      env: TEST=true
-      os: osx
-    - node_js: "0.8"
-      env: TEST=true
-      os: osx
+    ##- node_js: "7"
+      #env: TEST=true
+      #os: osx
+    #- node_js: "6"
+      #env: TEST=true
+      #os: osx
+    #- node_js: "5"
+      #env: TEST=true
+      #os: osx
+    #- node_js: "4"
+      #env: TEST=true
+      #os: osx
+    #- node_js: "iojs"
+      #env: TEST=true
+      #os: osx
+    #- node_js: "0.12"
+      #env: TEST=true
+      #os: osx
+    #- node_js: "0.10"
+      #env: TEST=true
+      #os: osx
+    #- node_js: "0.8"
+      #env: TEST=true
+      #os: osx
   allow_failures:
     - os: osx
     - env: TEST=true ALLOW_FAILURE=true