From aa9d1c7555b9ecea43987d03dbac2b66c58fb974 Mon Sep 17 00:00:00 2001
From: Jakob Helgesson <jakob.helgesson@gmail.com>
Date: Sun, 2 Jan 2022 23:21:46 +0100
Subject: [PATCH] Update return type to throw Error instead of return null (#9)

---
 src/hex2dec.ts | 4 +---
 src/index.ts   | 2 +-
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/hex2dec.ts b/src/hex2dec.ts
index 6f6fc24..8931b76 100644
--- a/src/hex2dec.ts
+++ b/src/hex2dec.ts
@@ -46,7 +46,7 @@ const parseToDigitsArray = (str: string, base: number) => {
     for (let i = digits.length - 1; i >= 0; i--) {
         let n = parseInt(digits[i], base);
 
-        if (isNaN(n)) return null;
+        if (isNaN(n)) throw new Error(`'${digits[i]}' is not a valid digit in base ${base}`);
 
         ary.push(n);
     }
@@ -57,8 +57,6 @@ const parseToDigitsArray = (str: string, base: number) => {
 const convertBase = (str: string, fromBase: number, toBase: number) => {
     let digits = parseToDigitsArray(str, fromBase);
 
-    if (digits === null) return null;
-
     let outArray: number[] = [];
     let power = [1];
     for (let i = 0; i < digits.length; i++) {
diff --git a/src/index.ts b/src/index.ts
index ba32ba2..c8fadda 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -20,7 +20,7 @@ export type SunflakeConfig = {
     epoch?: number;
 };
 
-export const generateSunflake = (config: SunflakeConfig) => async (time: number = Date.now()) => {
+export const generateSunflake = (config: SunflakeConfig) => async (time: number = Date.now()): Promise<string> => {
     let { machineID = 1, epoch = 1640988001000 } = config;
 
     lastTime = time;