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[cli] Support root-level Middleware file in vc dev (#7973)

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Adds initial support for a root-level `middleware.js` / `middleware.ts` file in the `vercel dev` CLI command. This leverages the existing Edge Function invoking logic in `@vercel/node`'s `startDevServer()` function and applies the necessary response / rewrites / mutations to the HTTP request based on the result of the middleware invocation.
This commit is contained in:
Nathan Rajlich
2022-06-27 12:56:32 -07:00
committed by GitHub
parent 570fd24e29
commit ee1211416f
16 changed files with 299 additions and 59 deletions
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72
packages/cli/test/dev/integration-4.test.ts
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@@ -433,3 +433,75 @@ test(
await testPath(404, '/i-do-not-exist');
})
);
test(
'[vercel dev] Middleware that returns a 200 response',
testFixtureStdio('middleware-response', async (testPath: any) => {
await testPath(200, '/', 'hi from middleware');
await testPath(200, '/another', 'hi from middleware');
})
);
test(
'[vercel dev] Middleware that does basic rewrite',
testFixtureStdio('middleware-rewrite', async (testPath: any) => {
await testPath(200, '/', '<h1>Index</h1>');
await testPath(200, '/index', '<h1>Another</h1>');
await testPath(200, '/another', '<h1>Another</h1>');
await testPath(200, '/another.html', '<h1>Another</h1>');
await testPath(200, '/foo', '<h1>Another</h1>');
})
);
test(
'[vercel dev] Middleware that rewrites with custom query params',
testFixtureStdio('middleware-rewrite-query', async (testPath: any) => {
await testPath(200, '/?foo=bar', '{"url":"/?from-middleware=true"}');
await testPath(
200,
'/another?foo=bar',
'{"url":"/another?from-middleware=true"}'
);
await testPath(
200,
'/api/fn?foo=bar',
'{"url":"/api/fn?from-middleware=true"}'
);
})
);
test(
'[vercel dev] Middleware that redirects',
testFixtureStdio('middleware-redirect', async (testPath: any) => {
await testPath(302, '/', null, {
location: 'https://vercel.com/',
});
await testPath(302, '/home', null, {
location: 'https://vercel.com/home',
});
await testPath(302, '/?foo=bar', null, {
location: 'https://vercel.com/?foo=bar',
});
})
);
test(
'[vercel dev] Middleware with error in function handler',
testFixtureStdio('middleware-error-in-handler', async (testPath: any) => {
await testPath(500, '/', /EDGE_FUNCTION_INVOCATION_FAILED/);
})
);
test(
'[vercel dev] Middleware with error at init',
testFixtureStdio('middleware-error-at-init', async (testPath: any) => {
await testPath(500, '/', /EDGE_FUNCTION_INVOCATION_FAILED/);
})
);
test(
'[vercel dev] Middleware with an explicit 500 response',
testFixtureStdio('middleware-500-response', async (testPath: any) => {
await testPath(500, '/', /EDGE_FUNCTION_INVOCATION_FAILED/);
})
);