[core] Drop node 6 support

.browserslistrc

@@ -3,4 +3,4 @@ edge >= 14
 firefox >= 52
 chrome >= 49
 safari >= 10
-node 6.11
+node 8.0

.circleci/config.yml

@@ -1,7 +1,7 @@
 defaults: &defaults
   working_directory: /tmp/material-ui
   docker:
-    - image: circleci/node:10.14
+    - image: circleci/node:8.15
 # CircleCI has disabled the cache across forks for security reasons.
 # Following their official statement, it was a quick solution, they
 # are working on providing this feature back with appropriate security measures.
@@ -155,7 +155,7 @@ jobs:
     # This isn't user facing code.
     # Let's take advantage of the most up to date node version.
     docker:
-      - image: circleci/node:10.14
+      - image: circleci/node:8.15
     steps:
       - checkout
       - *restore_yarn_offline_mirror
@@ -220,7 +220,7 @@ jobs:
   test_regressions:
     <<: *defaults
     docker:
-      - image: circleci/node:10.14
+      - image: circleci/node:8.15
       - image: selenium/standalone-chrome:3.11.0
     steps:
       - checkout

docs/src/pages/getting-started/supported-platforms/supported-platforms.md

@@ -19,7 +19,7 @@ You can expect Material-UI's components to render without major issues.
 ## Server
 
 Because Material-UI supports server-side rendering, we need to support the latest, stable releases of [Node.js](https://github.com/nodejs/node).
-We try to support the [last active LTS version](https://github.com/nodejs/Release#lts-schedule1). Right now, we support **node v6.x** and newer versions.
+We also try to support the [LTS versions that are in maintenance](https://github.com/nodejs/Release#lts-schedule1). Right now, we support **node v8.x** and newer versions.
 
 ### CSS prefixing
 

packages/material-ui-benchmark/package.json

@@ -21,7 +21,7 @@
   },
   "devDependencies": {},
   "engines": {
-    "node": ">=6.0.0"
+    "node": ">=8.0.0"
   },
   "license": "MIT",
   "dependencies": {

packages/material-ui-codemod/package.json

@@ -32,6 +32,6 @@
     "access": "public"
   },
   "engines": {
-    "node": ">=6.0.0"
+    "node": ">=8.0.0"
   }
 }

packages/material-ui-docs/package.json

@@ -47,6 +47,6 @@
     "access": "public"
   },
   "engines": {
-    "node": ">=6.0.0"
+    "node": ">=8.0.0"
   }
 }

packages/material-ui-icons/package.json

@@ -56,6 +56,6 @@
     "access": "public"
   },
   "engines": {
-    "node": ">=6.0.0"
+    "node": ">=8.0.0"
   }
 }

packages/material-ui-lab/package.json

@@ -50,6 +50,6 @@
     "access": "public"
   },
   "engines": {
-    "node": ">=6.0.0"
+    "node": ">=8.0.0"
   }
 }

packages/material-ui-styles/package.json

@@ -59,6 +59,6 @@
     "access": "public"
   },
   "engines": {
-    "node": ">=6.0.0"
+    "node": ">=8.0.0"
   }
 }

packages/material-ui-system/package.json

@@ -47,6 +47,6 @@
     "access": "public"
   },
   "engines": {
-    "node": ">=6.0.0"
+    "node": ">=8.0.0"
   }
 }

packages/material-ui-utils/package.json

@@ -46,6 +46,6 @@
     "access": "public"
   },
   "engines": {
-    "node": ">=6.0.0"
+    "node": ">=8.0.0"
   }
 }

packages/material-ui/package.json

@@ -69,6 +69,6 @@
     "access": "public"
   },
   "engines": {
-    "node": ">=6.0.0"
+    "node": ">=8.0.0"
   }
 }