James Mosier 435bf65784 Warn/revert custom devtool in development mode (#14285) ... Warn users and revert their `devtool` when they manually change the `devtool` in development mode. For this addition, I check to ensure the `devtool` is custom (i.e. different than what is set by Next) and has a value (`false` is fine as a custom `devtool`!). As described in [this issue (13963)](https://github.com/vercel/next.js/issues/13963), changing the `devtool` in development mode can cause issues with performance. Fixes #13963		2020-06-24 04:15:57 +00:00
..
index.js	Warn/revert custom devtool in development mode (#14285)	2020-06-24 04:15:57 +00:00