Bradley Axen
40 lines
1.0 KiB
TypeScript
40 lines
1.0 KiB
TypeScript
/**
|
|
* Gated performance logger for frontend timing instrumentation.
|
|
*
|
|
* Enabled when any of the following is true:
|
|
* - Running under Vite dev (`import.meta.env.DEV`)
|
|
* - `localStorage.getItem("goose.perf") === "1"`
|
|
*
|
|
* Otherwise a no-op, so perf call sites add zero runtime cost in release
|
|
* builds for users who have not opted in.
|
|
*
|
|
* Messages are prefixed with `[perf:<channel>]` by callers; this helper
|
|
* is intentionally dumb and forwards the already-formatted string.
|
|
*/
|
|
function isEnabled(): boolean {
|
|
try {
|
|
if (import.meta.env?.DEV) return true;
|
|
} catch {
|
|
// import.meta may be unavailable in some test contexts
|
|
}
|
|
try {
|
|
if (
|
|
typeof localStorage !== "undefined" &&
|
|
localStorage.getItem("goose.perf") === "1"
|
|
) {
|
|
return true;
|
|
}
|
|
} catch {
|
|
// localStorage can throw in restricted contexts
|
|
}
|
|
return false;
|
|
}
|
|
|
|
const enabled = isEnabled();
|
|
|
|
export function perfLog(message: string): void {
|
|
if (!enabled) return;
|
|
// eslint-disable-next-line no-console
|
|
console.log(message);
|
|
}
|