Senior LevelVue JS
How do you configure Vue 3 runtime and Vite builds to comply with strict Content Security Policy (CSP) nonce rules?
❓ Interview Prompt: Explain Content Security Policy (CSP) strict compliance, unsafe-eval, unsafe-inline styles, and Vite CSP nonce injection.
Strict Content Security Policy (CSP) rules prohibit 'unsafe-eval' (blocking 'new Function()') and 'unsafe-inline' (blocking inline '<style>' tags).
Enforcing Strict CSP in Vue 3:
1
No 'unsafe-eval': Vue 3's runtime-only build ('vue.runtime.esm-bundler.js') compiles all templates at build time, completely eliminating 'eval()' or 'new Function()'.
2
CSP Nonces for Dynamic Styles: Configure Vite to inject a cryptographic nonce attribute into all dynamically injected style tags by setting the global '__webpack_nonce__' or Vite CSP plugin options!
Code Implementation Example
html
<!-- Strict CSP Meta Header with Nonce -->
<meta
http-equiv="Content-Security-Policy"
content="default-src 'self'; style-src 'self' 'nonce-rAnd0m123'; script-src 'self';"
/>💡Configuring strict Content Security Policy headers with script and style nonces.
🎯 Interview Key Takeaway
Use Vue runtime-only builds and configure Vite to attach cryptographic nonces to dynamic style tags for strict CSP compliance.
#CSP#Security#Nonce#Senior
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