drop support for Node.js v4 (#7755)

* drop support for Node.js v4; closes #7753

- remove version 4 from Travis build matrix
- update environment support doc
- update `CONTRIBUTING.md`
- update `engines` field of root `package.json`

Signed-off-by: Christopher Hiller <boneskull@boneskull.com>

* update engines for babylon

Signed-off-by: Christopher Hiller <boneskull@boneskull.com>
This commit is contained in:
Christopher Hiller
2018-04-20 22:09:10 -07:00
committed by Justin Ridgewell
parent e45b58dcb1
commit b0e1e84471
5 changed files with 4 additions and 5 deletions

View File

@@ -7,7 +7,7 @@
The Babel compiler is **only** supported in these environments:
- Modern browsers such as Chrome, Firefox, Safari, Edge etc.
- Node.js 4 and upper versions
- Node.js 6 and newer versions
## Unsupported environments