fix(urlMatcherFactory): fix tilde edge case with "string" encoding (#3018)

makes it possible to bidirectionally encode/decode "~2F"

Author: cvn

src/params/paramTypes.ts

@@ -10,8 +10,8 @@ import {ParamTypeDefinition} from "./interface";
 // If the slashes are simply URLEncoded, the browser can choose to pre-decode them,
 // and bidirectional encoding/decoding fails.
 // Tilde was chosen because it's not a RFC 3986 section 2.2 Reserved Character
-function valToString(val: any) { return val != null ? val.toString().replace(/~/g, "~~").replace(/\//g, "~2F") : val; }
-function valFromString(val: string) { return val != null ? val.toString().replace(/~2F/g, "/").replace(/~~/g, "~") : val; }
+function valToString(val: any) { return val != null ? val.toString().replace(/(~|\/)/g, m => ({'~':'~~', '/':'~2F'}[m])) : val; }
+function valFromString(val: string) { return val != null ? val.toString().replace(/(~~|~2F)/g, m => ({'~~':'~', '~2F':'/'}[m])) : val; }
 
 export class ParamTypes {
   types: any;

test/ng1/urlMatcherFactorySpec.js

@@ -111,9 +111,11 @@ describe("UrlMatcher", function () {
 
     expect(matcher1.format({ foo: "abc" })).toBe('/abc');
     expect(matcher1.format({ foo: "~abc" })).toBe('/~~abc');
+    expect(matcher1.format({ foo: "~2F" })).toBe('/~~2F');
 
     expect(matcher1.exec('/abc').foo).toBe("abc");
     expect(matcher1.exec('/~~abc').foo).toBe("~abc");
+    expect(matcher1.exec('/~~2F').foo).toBe("~2F");
   });
 
   describe("snake-case parameters", function() {