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

@@ -41,7 +41,7 @@ Feel free to check out the `#discussion`/`#development` channels on our [Slack](
**Note:** Versions `< 5.1.10` can't be built.
Babel is built for Node 4 and up but we develop using Node 8 and yarn. You can check this with `node -v`.
Babel is built for Node 6 and up but we develop using Node 8 and yarn. You can check this with `node -v`.
Make sure that Yarn is installed with version >= `0.28.0`.
Installation instructions can be found here: https://yarnpkg.com/en/docs/install.