initial commit & scaffold

node-health/src/index.ts

@@ -0,0 +1,30 @@
+/**
+ * Simple liveness & readiness helpers
+ */
+
+export type ReadinessResult = {
+  ok: boolean;
+  details: { name: string; ok: boolean; error?: string }[];
+};
+
+export function liveness() {
+  return {
+    status: 'ok',
+    timestamp: Date.now(),
+  };
+}
+
+export async function readiness(
+  checks: Array<{ name: string; fn: () => Promise<boolean> | boolean }>
+): Promise<ReadinessResult> {
+  const results: ReadinessResult['details'] = [];
+  for (const c of checks) {
+    try {
+      const r = await Promise.resolve(c.fn());
+      results.push({ name: c.name, ok: !!r });
+    } catch (err: any) {
+      results.push({ name: c.name, ok: false, error: err?.message ?? String(err) });
+    }
+  }
+  return { ok: results.every((r) => r.ok), details: results };
+}