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chore: relax COOP on preview deploys #7875

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chore: relax COOP on preview deploys #7875

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7 changes: 4 additions & 3 deletions apps/cowswap-frontend/vercel.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -67,6 +67,8 @@ const csp = buildCsp([
['upgrade-insecure-requests', []],
])

const crossOriginOpenerPolicy = process.env.VERCEL_ENV === 'production' ? 'same-origin-allow-popups' : 'unsafe-none'

// ---------------------------------------------------------------------------
// Vercel config
// ---------------------------------------------------------------------------
Expand All @@ -87,9 +89,8 @@ export const config: VercelConfig = {
routes.header('/(.*)', [
// Controls which resources the browser is allowed to load; prevents XSS and data injection attacks.
{ key: 'Content-Security-Policy', value: csp },
// Isolates the browsing context so cross-origin pages cannot access window.opener,
// while still allowing this page to open popups (needed for wallet connections).
{ key: 'Cross-Origin-Opener-Policy', value: 'same-origin-allow-popups' },
// Preview deploys use unsafe-none so Tag Assistant can keep its cross-origin debug connection.
{ key: 'Cross-Origin-Opener-Policy', value: crossOriginOpenerPolicy },
// Allows any origin to load this page as an iframe, required for the embeddable widget.
{ key: 'Cross-Origin-Resource-Policy', value: 'cross-origin' },
// Prevents browsers from MIME-sniffing a response away from the declared Content-Type.
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