By popular request, this pull request adds support for returning `fallback: 'blocking'` from `getStaticPaths`.
This new mode will cause unknown paths to be rendered on-demand ("SSR") without the static (placeholder) fallback.
This feature is **currently experimental and should not be used in production yet**. It's currently flagged behind `unstable_`:
```
fallback: 'unstable_blocking'
```
TODO:
- [x] Next.js tests
- [ ] Add Vercel support
- [ ] Vercel tests
---
Fixes#15637
Next.js forcibly setting `module: 'esnext'` in `tsconfig.json` is necessary to prevent TypeScript from erroring on the following code:
```tsx
import dynamic from 'next/dynamic';
const A = dynamic(() => import('../A'));
```
```
ERROR in /Users/joe/Desktop/scratch/test-cjs/pages/index.tsx(5,25):
5:25 Dynamic imports are only supported when the '--module' flag is set to 'es2020', 'esnext', 'commonjs', 'amd', 'system', or 'umd'.
> 5 | const A = dynamic(() => import("../test"));
```
However, users may want to use one of the many other targets for better interoperability with projects that co-exist with their Next.js project (like `commonjs`).
When cross referenced with:
```
Option '--resolveJsonModule' can only be specified when module code generation is 'commonjs', 'amd', 'es2015' or 'esNext'.ts
```
That means we can permit any of these values:
```json5
parsedValues: [
ts.ModuleKind.ES2020,
ts.ModuleKind.ESNext,
ts.ModuleKind.CommonJS,
ts.ModuleKind.AMD,
],
```
This PR updates Next.js to allow those!
---
Fixes#15275
This adds handling for custom-routes with `basePath` to automatically add the `basePath` for custom-routes `source` and `destination` unless `basePath: false` is set for the route.
Closes: https://github.com/vercel/next.js/issues/14782
This adds additional checks against the routeKeys used to build the named regexes for dynamic routes to ensure they follow PCRE rules for named capture groups
x-ref: https://github.com/vercel/vercel/pull/4813
Avoid trailing slashes on urls that look like files. The redirect for `trailingSlash: true` will now look like:
```
Redirects
┌ source: /:path*/:file.:ext/
├ destination: /:path*/:file.:ext
└ permanent: true
┌ source: /:path*/:notfile([^/.]+)
├ destination: /:path*/:notfile/
└ permanent: true
```
The default still looks like:
```
Redirects
┌ source: /:path+/
├ destination: /:path+
└ permanent: true
```
After this gets merged, I have a few optimizations planned on the normalization code that should reduce the client bundle a little and that consolidates the `trailingSlash` and `exportTrailingSlash` options
This builds off of @timneutkens's PR instead of updating it because it's his `canary` branch.
Updated to still `stat`, as it's the only way to test the difference between a file and directory.
---
Closes#13506Fixes#12235
Extracted from https://github.com/vercel/next.js/pull/13333, the same exact code lives in that PR as well, but we can merge this separately if it makes reviewing https://github.com/vercel/next.js/pull/13333 easier
This PR does 3 things
- deduplicate code from build and next-dev-server that loads custom routes from next.config.js (`loadCustomRoutes`)
- in `loadCustomRoutes`, load these rewrites, headers and redirects configs concurrently instead of sequentially.
- in next-server, make `this.customRoutes` always defined, this allows us to remove the big `if` around its initialization code in `generateRoutes`, which in turn makes it possible to reuse this code for other routing than user defined routes, which is how https://github.com/vercel/next.js/pull/13333 adds its redirects.
Was going through _document and noticed some variable shadowing going on. Added a rule for it to our eslint configuration and went through all warnings with @Timer.
This removes `fork-ts-checker-webpack-plugin` and instead directly calls the TypeScript API.
This is approximately 10x faster.
Base build: 7s (no TypeScript features enabled)
- `fork-ts-checker-webpack-plugin@3.1.1`: 90s, computer sounds like an airplane
- `fork-ts-checker-webpack-plugin@4.1.6`: 84s, computer did **not** sound like an airplane
- `fork-ts-checker-webpack-plugin@5.0.0-alpha.14`: 90s, regressed
- `npx tsc -p tsconfig.json --noEmit`: 12s (time: `18.57s user 0.97s system 169% cpu 11.525 total`)
- **This PR**: 22s, expected to get better when we run this as a side-car
All of these tests were run 3 times and repeat-accurate within +/- 0.5s.
This pull request refactors our TypeScript preflight check in preparation for dropping the `fork-ts-checker-webpack-plugin` plugin.
This will make reviewing the subsequent PR much easier.
---
There is no behavior change, so the existing test should cover this adequately.
This pull request updates our TypeScript verification process to not wipe out potentially vital user comments.
Introducing a prompt process was mostly a side effect of users wanting to keep comments.
There's no reason we really need this prompt, as answering no would refuse to boot the Next.js server anyway.
---
Fixes#8128Closes#11440
As discussed this adds bundling of `.env` files in `serverless` mode so that the environment values are also available when deploying with this target
closes: https://github.com/zeit/next.js/issues/13332
A minor chage, that makes `.env` clickable in terminals. When Next.js starts, I am showing some variables in the terminal. To jump to the .env file, adding `./` in front of it makes it clickable.
Example:
One disadvantage is that I am unsure how well this is supported in terminals in general (I am using VSCode's built-in one here)
Any other disadvantages?
* 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>
* Rename unstable GSP revalidate field
* Update error message
* Tweak error message some more
* Apply suggestions from code review
Co-Authored-By: Joe Haddad <joe.haddad@zeit.co>
Co-authored-by: Joe Haddad <joe.haddad@zeit.co>
