# Cloudflare Pages response headers (#335, web storage via drift/SQLite-WASM).
#
# Syntax: a URL pattern, then indented headers. Cloudflare Pages reads this
# file from the build output and can add, override or remove response headers.
#
# Two things drift needs on the web:
#
# 1. sqlite3.wasm MUST be served as Content-Type: application/wasm, or
#    WebAssembly streaming compilation refuses it.
#
# 2. COOP + COEP (cross-origin isolation) unlock drift's best storage backend,
#    OPFS (`opfsLocks`). Verified locally: with these headers drift logs
#    "Using WasmStorageImplementation.opfsLocks". WITHOUT them it still works,
#    falling back to IndexedDB, which is slower but still unbounded compared to
#    localStorage's 5 MiB cap. So these are a performance tier, not a
#    correctness requirement.
#
# Verify after the first deploy:
#   curl -sI https://<host>/sqlite3.wasm | grep -i 'content-type'
#   -> expect: content-type: application/wasm
# and check the browser console for the opfsLocks line above.

/sqlite3.wasm
  Content-Type: application/wasm

/*
  Cross-Origin-Opener-Policy: same-origin
  Cross-Origin-Embedder-Policy: require-corp