Include node 8.0 to travis config & update tests (#5807)

* Remove node 7 and introduce node 8 in travis config

Progress on #5804

* Run yarn install with node 8

Progress on #5804

* Remove expose_debug_as from tests; replace with expose_gc_as

Fixes #5804

* Remove dashed options since they aren't listed

* Revert "Remove dashed options since they aren't listed"

This reverts commit f826167e320ee85331e09ac63b5674401cac6236.

.travis.yml

@@ -7,7 +7,7 @@ cache:
   directories:
   - node_modules
 node_js:
-  - '7'
+  - '8'
   - '6'
   - '4'
 

packages/babel-cli/test/fixtures/babel-node/v8Flag-dashed-with-param/options.json

@@ -1,4 +1,4 @@
 {
-  "args": ["--expose-debug-as=customDebug", "--eval", "console.log(customDebug.Debug.DebugEvent.Break)"],
-  "stdout": "1"
+  "args": ["--expose-gc-as=garbageCollector", "--eval", "console.log(typeof global.garbageCollector)"],
+  "stdout": "function"
 }

packages/babel-cli/test/fixtures/babel-node/v8Flag-underscored-with-param/options.json

@@ -1,4 +1,4 @@
 {
-  "args": ["--expose_debug_as=customDebug", "--eval", "console.log(customDebug.Debug.DebugEvent.Break)"],
-  "stdout": "1"
+  "args": ["--expose_gc_as=garbageCollector", "--eval", "console.log(typeof global.garbageCollector)"],
+  "stdout": "function"
 }

yarn.lock

@@ -842,16 +842,16 @@ babel-register@7.0.0-alpha.12:
     pirates "^3.0.1"
     source-map-support "^0.4.2"
 
-babel-runtime@^6.18.0, babel-runtime@^6.23.0:
-  version "6.23.0"
-  resolved "https://registry.yarnpkg.com/babel-runtime/-/babel-runtime-6.23.0.tgz#0a9489f144de70efb3ce4300accdb329e2fc543b"
+babel-runtime@^6.18.0, babel-runtime@^6.22.0:
+  version "6.22.0"
+  resolved "https://registry.yarnpkg.com/babel-runtime/-/babel-runtime-6.22.0.tgz#1cf8b4ac67c77a4ddb0db2ae1f74de52ac4ca611"
   dependencies:
     core-js "^2.4.0"
     regenerator-runtime "^0.10.0"
 
-babel-runtime@^6.22.0:
-  version "6.22.0"
-  resolved "https://registry.yarnpkg.com/babel-runtime/-/babel-runtime-6.22.0.tgz#1cf8b4ac67c77a4ddb0db2ae1f74de52ac4ca611"
+babel-runtime@^6.23.0:
+  version "6.23.0"
+  resolved "https://registry.yarnpkg.com/babel-runtime/-/babel-runtime-6.23.0.tgz#0a9489f144de70efb3ce4300accdb329e2fc543b"
   dependencies:
     core-js "^2.4.0"
     regenerator-runtime "^0.10.0"