Artifact [41fc170a2d]

Artifact 41fc170a2d1f0283355d83640217db708ca8f7e4d8ba18a8b91db95ed79ff9b8:

• File db/config_wasm.go — part of check-in [f5744359d3] at 2026-04-19 16:30:54 on branch trunk — Initial open source release

  libfossil is a pure-Go implementation of the Fossil SCM, reading and writing the same .fossil SQLite repository format as upstream Fossil.

  This is the first public release of code that previously lived in a private repository. The module path is github.com/danmestas/libfossil and the binary is named libfossil to avoid $PATH collisions with upstream fossil.

  Included: - Repo lifecycle (create, clone), checkout/checkin, timeline, merge, diff, annotate, shun, tag, branch, bisect, stash, undo/redo - Sync-over-HTTP protocol (client and handler) - Two SQLite drivers: modernc (pure Go, default) and ncruces (wasm-capable) - Observer interfaces (SyncObserver, CheckoutObserver) with an optional OpenTelemetry implementation in observer/otel (separate submodule) - Deterministic simulation testing harness with BUGGIFY fault injection - Kong-based embeddable CLI under cli/ and a standalone binary under cmd/libfossil/ (user: [email protected], size: 726) [annotate] [blame] [check-ins using]

//go:build wasip1 || js

package db

// wasmPragmaOverrides returns browser/WASI-specific pragma overrides.
// OPFS doesn't support shared memory, so WAL is replaced with DELETE journal
// and EXCLUSIVE locking mode (single connection per Worker).
func wasmPragmaOverrides() map[string]string {
	return map[string]string{
		"journal_mode": "DELETE",
		"locking_mode": "EXCLUSIVE",
	}
}

// wasmDSNSuffix appends nolock=1 to disable file locking on WASM.
// WASI runtimes don't support POSIX/OFD/BSD file locks.
func wasmDSNSuffix() string {
	return "nolock=1"
}

// wasmClearPragmas signals that WASM builds should not skip pragmas —
// browser builds need DELETE journal + EXCLUSIVE locking.
const wasmClearPragmas = false