fixes #3, allow a minus sign before decimal values

Author: disjunction

src/ValueDetector.js

@@ -14,7 +14,7 @@ class ValueDetector {
     const base64Quartets = minBase64Length / 4;
 
     this.valueMasks = (replaceMasks || [
-      /^\d+$/,
+      /^\-?\d+$/,
 
       /^(\d{2}|\d{4})\-\d\d\-\d\d$/, // date
 

test/UrlValueParser.spec.js

@@ -22,6 +22,12 @@ describe('UrlValueParser', () => {
       expect(replaced).toBe('/in/world/#val/userId/#val');
     });
 
+    it('works with negative decimal numbers', () => {
+      const o = new UrlValueParser();
+      const replaced = o.replacePathValues('/some/path/-154/userId/-ABC363AFE2');
+      expect(replaced).toBe('/some/path/#val/userId/-ABC363AFE2');
+    });
+
     it('works with a replacement as a callback', () => {
       const o = new UrlValueParser();
       const replaced = o.replacePathValues(