From 202d51c6a2aea6c24af00605dd76b4fc37e42630 Mon Sep 17 00:00:00 2001
From: Florian Dold <florian.dold@gmail.com>
Date: Thu, 4 Jan 2018 11:35:04 +0100
Subject: refactor / put some types where they belong

---
 src/helpers.ts | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'src/helpers.ts')

diff --git a/src/helpers.ts b/src/helpers.ts
index 42863c65b..3b7cd36f5 100644
--- a/src/helpers.ts
+++ b/src/helpers.ts
@@ -138,6 +138,9 @@ export function getTalerStampDate(stamp: string): Date | null {
   return new Date(sec * 1000);
 }
 
+/**
+ * Compute the hash function of a JSON object.
+ */
 export function hash(val: any): number {
   const str = canonicalJson(val);
   // https://github.com/darkskyapp/string-hash
@@ -152,3 +155,17 @@ export function hash(val: any): number {
   * signed int to an unsigned by doing an unsigned bitshift. */
   return h >>> 0;
 }
+
+
+/**
+ * Lexically compare two strings.
+ */
+export function strcmp(s1: string, s2: string): number {
+  if (s1 < s2) {
+    return -1;
+  }
+  if (s1 > s2) {
+    return 1;
+  }
+  return 0;
+}
-- 
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