add game config configuration

packages/hono-helpers/src/helpers/env.ts

@@ -0,0 +1,19 @@
+/**
+ * Read an integer worker var, falling back to `fallback` when it is unset or unusable.
+ *
+ * A var arrives as a number when it's declared in wrangler.jsonc `vars`, but as a string
+ * when it's set anywhere else (the dashboard, `wrangler deploy --var`, `.dev.vars`), so
+ * both have to be accepted — the same var is a different type depending on where the
+ * operator set it.
+ *
+ * Anything that isn't a finite integer (an empty string, a typo, `3.5`) is treated as
+ * unset rather than coerced: `Number.parseInt` would read `"3abc"` as 3 and `"3.9"` as 3,
+ * which turns a typo into a silently wrong limit. Falling back to the documented default
+ * is the safe failure here.
+ */
+export function intVar(value: unknown, fallback: number): number {
+	if (typeof value === 'number') return Number.isInteger(value) ? value : fallback
+	if (typeof value !== 'string' || value.trim() === '') return fallback
+	const parsed = Number(value)
+	return Number.isInteger(parsed) ? parsed : fallback
+}

packages/hono-helpers/src/index.ts

@@ -1,4 +1,5 @@
 export type { HonoApp, SharedHonoEnv, SharedHonoVariables, SharedAppContext } from './types'
+export * from './helpers/env'
 export { logger } from './helpers/logger'
 export { getRequestLogData, type LogDataRequest } from './helpers/request'
 export * from './helpers/errors'