Chore: add cache key to fs cache

Build/lib/string-hash.ts

@@ -0,0 +1,48 @@
+/**
+ * FNV-1a Hash implementation
+ * @author Travis Webb (tjwebb) <me@traviswebb.com>
+ *
+ * Ported from https://github.com/tjwebb/fnv-plus/blob/master/index.js
+ *
+ * Simplified, optimized and add modified for 52 bit, which provides a larger hash space
+ * and still making use of Javascript's 53-bit integer space.
+ */
+export const fnv1a52 = (str: string) => {
+  const len = str.length;
+  let i = 0,
+    t0 = 0,
+    v0 = 0x2325,
+    t1 = 0,
+    v1 = 0x8422,
+    t2 = 0,
+    v2 = 0x9CE4,
+    t3 = 0,
+    v3 = 0xCBF2;
+
+  while (i < len) {
+    v0 ^= str.charCodeAt(i++);
+    t0 = v0 * 435;
+    t1 = v1 * 435;
+    t2 = v2 * 435;
+    t3 = v3 * 435;
+    t2 += v0 << 8;
+    t3 += v1 << 8;
+    t1 += t0 >>> 16;
+    v0 = t0 & 65535;
+    t2 += t1 >>> 16;
+    v1 = t1 & 65535;
+    v3 = (t3 + (t2 >>> 16)) & 65535;
+    v2 = t2 & 65535;
+  }
+
+  return (
+    (v3 & 15) * 281_474_976_710_656
+    + v2 * 4_294_967_296
+    + v1 * 65536
+    + (v0 ^ (v3 >> 4))
+  );
+};
+
+export const stringHash = (payload: string) => {
+  return fnv1a52(payload).toString(36) + payload.length.toString(36);
+};