initial commit

lib/siliconId.ts

@@ -0,0 +1,36 @@
+/**
+ * Encode number to Base62
+ */
+function toBase62(num: number): string {
+  const base62 = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'
+  let encoded = ''
+  let n = num
+  if (n === 0) return '0'
+
+  while (n > 0) {
+    encoded = base62[n % 62] + encoded
+    n = Math.floor(n / 62)
+  }
+  return encoded
+}
+
+/**
+ * Generate compact Silicon ID
+ * Format: base62(timestamp + random), min length 8 chars
+ */
+export function generateSiliconId(): string {
+  const epochStart = new Date('2020-01-01').getTime()
+  const now = Date.now()
+
+  // relative timestamp since epochStart
+  const timestamp = (now - epochStart) % 1_000_000_000_000
+
+  // add randomness (0–999)
+  const randomNum = Math.floor(Math.random() * 1000)
+
+  // combine into one big number
+  const finalNum = timestamp * 1000 + randomNum
+
+  // convert to base62
+  return toBase62(finalNum).padStart(10, '0') // always at least 10 chars
+}