From c16fd97eb821e6badd2a2f11370a71eef175afd9 Mon Sep 17 00:00:00 2001
From: wuyangfan <yangfan.wu@succaiss.com>
Date: Tue, 26 May 2026 09:41:18 +0800
Subject: [PATCH] perf: precompute time unit constants

Replace runtime multiplication chains with literal millisecond values
for each unit constant.

Fixes #271
---
 src/index.ts | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/index.ts b/src/index.ts
index d50e3c7..9b77a3f 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,10 +1,10 @@
 const s = 1000;
-const m = s * 60;
-const h = m * 60;
-const d = h * 24;
-const w = d * 7;
-const y = d * 365.25;
-const mo = y / 12;
+const m = 60_000;
+const h = 3_600_000;
+const d = 86_400_000;
+const w = 604_800_000;
+const y = 31_557_600_000;
+const mo = 2_629_800_000;
 
 type Years = 'years' | 'year' | 'yrs' | 'yr' | 'y';
 type Months = 'months' | 'month' | 'mo';