Fixes
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tar "Cannot connect to C: resolve failed" when creating a zip on Windows from Node/Git Bash
#18tar: Cannot connect to C: resolve failed (exit 128) when a Node script runs execFileSync("tar", ["-a", "-c", "-f", "C:\\path\\out.zip", ...]) on Windows with Git Bash installed
node --test <folder>/ fails with Cannot find module on Node 22+
#17Error: Cannot find module '/path/to/project/tests' (MODULE_NOT_FOUND) when running node --test tests/
Vercel CLI hangs on 'Waiting for terms acceptance in browser'
#16vercel integration add neon: Opening browser for terms acceptance. Waiting for terms acceptance in browser...
React hydration mismatch from dates or locale formatting
#15Error: Text content does not match server-rendered HTML / Hydration failed because the server rendered text didn't match the client.
Generated tsvector column fails: generation expression is not immutable
#14ERROR: generation expression is not immutable
PowerShell 5.1: '&&' is not a valid statement separator
#13The token '&&' is not a valid statement separator in this version.
Browser call to Anthropic API blocked by CORS
#12Access to fetch at 'https://api.anthropic.com/v1/messages' from origin ... has been blocked by CORS policy.
MCP stdio server breaks: client shows JSON parse errors
#11MCP client reports invalid JSON / 'Unexpected token' and the server disconnects right after starting.
Stripe webhook signature verification fails in Next.js App Router
#10StripeSignatureVerificationError: No signatures found matching the expected signature for payload.
Next.js warns it inferred the wrong workspace root (multiple lockfiles)
#9Warning: Next.js inferred your workspace root, but it may not be correct. We detected multiple lockfiles and selected the directory of <home>/package-lock.json as the root directory.
create-next-app fails: name can no longer contain capital letters
#8Could not create a project called "MyApp" because of npm naming restrictions: name can no longer contain capital letters
node --test can't import project files: Cannot use import statement outside a module
#7SyntaxError: Cannot use import statement outside a module (or ERR_REQUIRE_ESM) when running node --test against lib/*.js files that use import/export.
New Vercel environment variable is undefined in production
#6process.env.MY_VAR is undefined on the live site even though it was added in the Vercel dashboard.
Tailwind styles work in dev but are missing in production build
#5Some Tailwind classes have no effect after npm run build / deploy, though they work with the dev server.
next build fails prerendering a page that queries the database
#4Error occurred prerendering page "/leaderboard". Error: DATABASE_URL is not set. Export encountered an error, exiting the build.
Next.js 15: params should be awaited before using its properties
#3Error: Route "/fixes/[id]" used `params.id`. `params` should be awaited before using its properties.
Supabase table readable by anyone with the anon key
#2Data in a Supabase table can be fetched from the browser with only the public anon key, no login.
Postgres function still callable by anon after REVOKE FROM anon
#1Supabase RPC behind a paywall still returns data to logged-out users even after REVOKE EXECUTE ... FROM anon.