Fix copyright, jsdoc and return value type. Remove regex

Author: contractormario

src/core/format/KeyGenerator.ts

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018 NEM
+ * Copyright 2019 NEM
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,19 +19,17 @@ import { sha3_256 } from 'js-sha3';
 
 export class KeyGenerator {
     /**
+     * Generate UInt64 from a string
+     * @param {string} input Input string
      * @returns {UInt64} Deterministic uint64 value for the given string
      */
-    public static fromString(input: string) {
+    public static fromString(input: string): UInt64 {
         if (input.length === 0) {
             throw Error(`Input must not be empty`);
         }
         if (input.length > 1024) {
             throw Error(`Input exceeds 1024 characters (has ${input.length})`);
         }
-        const format = /^[a-zA-Z0-9_]+$/gm;
-        if (input.match(format) === null) {
-            throw Error(`Input has invalid format (accepted characters: a-z, A-Z, 0-9, _)`);
-        }
         const hex = sha3_256(input)
         return UInt64.fromHex(hex.substr(0, 16))
     }

test/core/format/KeyGenerator.spec.ts

@@ -25,11 +25,6 @@ describe('key generator', () => {
         it('returns UInt64', () => {
             expect(KeyGenerator.fromString('a')).to.be.instanceOf(UInt64);
         })
-        it('throws if input has invalid format', () => {
-            expect(() => KeyGenerator.fromString('$abc')).to.throw(Error, '');
-            expect(() => KeyGenerator.fromString('ab-c')).to.throw(Error, '');
-            expect(() => KeyGenerator.fromString('abc.')).to.throw(Error, '');
-        })
         it('generates correct keys', () => {
             expect(KeyGenerator.fromString('a').toHex()).to.equal('80084BF2FBA02475');
         })