1 files changed, 17 insertions, 0 deletions
diff --git a/src/lib/strings/helpers.ts b/src/lib/strings/helpers.ts
index 183d53e31..ef93a366f 100644
--- a/src/lib/strings/helpers.ts
+++ b/src/lib/strings/helpers.ts
@@ -15,3 +15,20 @@ export function enforceLen(str: string, len: number, ellipsis = false): string {
   }
   return str
 }
+
+// https://stackoverflow.com/a/52171480
+export function toHashCode(str: string, seed = 0): number {
+  let h1 = 0xdeadbeef ^ seed,
+    h2 = 0x41c6ce57 ^ seed
+  for (let i = 0, ch; i < str.length; i++) {
+    ch = str.charCodeAt(i)
+    h1 = Math.imul(h1 ^ ch, 2654435761)
+    h2 = Math.imul(h2 ^ ch, 1597334677)
+  }
+  h1 = Math.imul(h1 ^ (h1 >>> 16), 2246822507)
+  h1 ^= Math.imul(h2 ^ (h2 >>> 13), 3266489909)
+  h2 = Math.imul(h2 ^ (h2 >>> 16), 2246822507)
+  h2 ^= Math.imul(h1 ^ (h1 >>> 13), 3266489909)
+
+  return 4294967296 * (2097151 & h2) + (h1 >>> 0)
+}