rsnext/examples/with-strict-csp
Aaron Campbell c703fae24c
Allow unsafe-eval during development (#55998)
Fixes issue where a freshly cloned example will not work in development
mode due to `unsafe-eval` being blocked by the CSP.

Currently, the example will not work in development. Running the example
with `run dev` will produce EvalError errors in console which prevent
the app from functioning. This error also prevents any `<Script>`
components with `afterInteractive` from being loaded. These issues do
not occur in production where `eval` is not used.

This PR:
- Fixes the issue by allowing `unsafe-eval` if the environment is not
`production`.
- Improves the `script-src` value by [allowing backwards compatibility
with
browsers](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src#strict-dynamic)
that do not support `strict-dynamic` (`https: http: 'unsafe-inline'`
will be ignored by browsers that support `strict-dynamic`).

Some further details are available here:
https://github.com/vercel/next.js/issues/55638. This PR is not a fix for
the issue however.

- Fixes https://github.com/vercel/next.js/issues/61316

Co-authored-by: Sam Ko <sam@vercel.com>
2024-03-11 18:15:13 +00:00
..
app chore(examples): use default prettier for examples/templates (#60530) 2024-01-11 16:01:44 -07:00
.gitignore Add .yarn/install-state.gz to .gitignore (#56637) 2023-10-18 16:34:48 +00:00
middleware.js Allow unsafe-eval during development (#55998) 2024-03-11 18:15:13 +00:00
package.json Update Examples to use React 18 (#42027) 2022-10-28 17:43:20 +00:00
README.md docs: Add docs on CSP and nonce generation (#54601) 2023-09-01 22:13:49 +00:00

Content Security Policy with Nonce

This example shows how to create a Next.js application that sets a strict Content Security Policy (CSP) for your pages, including generating a dynamic nonce.

Deploy your own

Deploy with Vercel

How to use

Execute create-next-app with npm, Yarn, or pnpm to bootstrap the example:

npx create-next-app --example with-strict-csp with-strict-csp-app
yarn create next-app --example with-strict-csp with-strict-csp-app
pnpm create next-app --example with-strict-csp with-strict-csp-app

Deploy it to the cloud with Vercel (Documentation).