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
**First, apologies for a second PR on the same issue but I was working on this already so I thought I'd push it and let you decide which you want to merge.**
The PR is related to [13466](https://github.com/vercel/next.js/issues/13466).
Based on my research, the error happens if the options are empty, null, or undefined. That's why I have decided that the most proper check would be using the! post-fix expression operator may assert that its operand is non-null and non-undefined. ``if (options == null)``
(Optional)
I have also added a warning, which warns the user if the passed "dev" variable is not a boolean.
It's my first PR on the "packages" part of the repo so I'd be glad to receive all kinds of critics. If you want me to change or remove anything, I'm open to suggestions.
---
Fixes#13466
* Enable .env support by default
Given we've had tons of reports from various people that expected .env support to work even though they had dotenv installed already I think it's fine to enable it as a default:
Fixes#12728
* Remove old test
* Fix duplicate env loading
* Update docs
Co-authored-by: JJ Kasper <jj@jjsweb.site>
* Add initial process.env stubbing for new env support
* Fix server process.env being stubbed in production
* bump
Co-authored-by: Joe Haddad <joe.haddad@zeit.co>
* Add error/warning when a page is rendered without a /
Throws an error for development and gives a warning in production
* Add tests for error when rendering without starting slash
* Update to always warn and add err.sh
* Update errors/render-no-starting-slash.md
Co-authored-by: JJ Kasper <jj@jjsweb.site>
Co-authored-by: Tim Neutkens <tim@timneutkens.nl>
* Warn when user has pages/_error but no pages/404
* Update test
* Update custom-error-no-custom-404.md
* Apply suggestions from code review
Co-Authored-By: Tim Neutkens <tim@timneutkens.nl>
Co-authored-by: Tim Neutkens <tim@timneutkens.nl>
* Add initial support for new env config file
* Fix serverless processEnv call when no env is provided
* Add missing await for test method
* Update env config to .env.json and add dotenv loading
* ncc dotenv package
* Update type
* Update with new discussed behavior removing .env.json
* Update hot-reloader createEntrypoints
* Make sure .env is loaded before next.config.js
* Add tests for all separate .env files
* Remove comments
* Add override tests
* Add test for overriding env vars based on local environment
* Add support for .env.test
* Apply suggestions from code review
Co-Authored-By: Joe Haddad <joe.haddad@zeit.co>
* Use chalk for env loaded message
* Remove constant as it’s not needed
* Update test
* Update errsh, taskr, and CNA template ignores
* Make sure to only consider undefined missing
* Remove old .env ignore
* Update to not populate process.env with loaded env
* Add experimental flag and add loading of global env values
Co-authored-by: Tim Neutkens <timneutkens@me.com>
Co-authored-by: Joe Haddad <joe.haddad@zeit.co>
* Rename getServerProps to getServerSideProps
* Remove unstable_ prefix from new methods
* Add error when legacy methods are detected
* Add legacy methods for babel transform
* Add unstable_getServerSideProps also
* Apply suggestions from code review
Co-Authored-By: Joe Haddad <joe.haddad@zeit.co>
* Update types import
Co-authored-by: Joe Haddad <timer150@gmail.com>
* Ability to Disable SSG Fallback
* Throw error when value is missing
* Fix existing tests
* Adjust error message
* Do not render fallback at build time for `fallback: false` page
* Fix existing fallback behavior
* fix build
* fix version
* fix some tests
* Fix last test
* Add docs for get static paths
* Add explicit mode tests
* test for fallback error message
* Make sure to show error when url prop is returned for a page
* Update test and handle undefined pageProps
* Handle empty props
* Apply suggestions from code review
Co-Authored-By: Tim Neutkens <tim@timneutkens.nl>
* Update tests
* Update to not add url prop for SSG/SSP pages
* Update errsh for reserved prop
* Update errsh wording some more
* Update tests and to warn instead of error
* Update reserved prop warning
* Include page in url prop warning
Co-authored-by: Tim Neutkens <tim@timneutkens.nl>
Co-authored-by: Joe Haddad <timer150@gmail.com>
