Drop support for node 4

.circleci/config.yml

@@ -76,17 +76,6 @@ jobs:
       - save-cache: *save-cache
       - run: yarn run test-ci
 
-  test-node-4:
-    working_directory: ~/jest
-    docker:
-      - image: circleci/node:4
-    steps:
-      - checkout
-      - restore-cache: *restore-cache
-      - *yarn-install
-      - save-cache: *save-cache
-      - run: npm run test-ci-partial
-
   test-and-deploy-website:
     working_directory: ~/jest
     docker:
@@ -107,6 +96,5 @@ workflows:
     jobs:
       - test-node-8
       - test-node-6
-      - test-node-4
       - test-browser
       - test-and-deploy-website

CHANGELOG.md

@@ -42,6 +42,7 @@
 * `[jest-worker]` Initial version of parallel worker abstraction, say hello! ([#4497](https://github.com/facebook/jest/pull/4497))
 
 ### Chore & Maintenance
+* `[*]` [**BREAKING**] Drop support for Node.js version 4
 * `[babel-jest]` Explicitly bump istanbul to newer versions ([#4616](https://github.com/facebook/jest/pull/4616))
 * `[expect]` Upgrade mocha and rollup for browser testing ([#4642](https://github.com/facebook/jest/pull/4642))
 * `[docs]` Add info about `coveragePathIgnorePatterns` ([#4602](https://github.com/facebook/jest/pull/4602))

packages/jest-cli/package.json

@@ -39,7 +39,7 @@
     "jest": "./bin/jest.js"
   },
   "engines": {
-    "node": ">= 4"
+    "node": ">= 6"
   },
   "repository": {
     "type": "git",

packages/jest/package.json

@@ -10,7 +10,7 @@
     "jest": "./bin/jest.js"
   },
   "engines": {
-    "node": ">= 4"
+    "node": ">= 6"
   },
   "repository": {
     "type": "git",