fix(typescript): tighten TypeScript typings and modernize project tooling configuration

test/test.both.ts

@@ -1,4 +1,4 @@
-import { expect, tap } from '@push.rocks/tapbundle';
+import { expect, tap } from '@git.zone/tstest/tapbundle';
 import * as smartpromise from '../ts/index.js';
 
 tap.test('should return a Deferred for .defer()', async () => {
@@ -17,7 +17,7 @@ tap.test('should let types flow through the Promise', async () => {
 
 tap.test('should map callbacks', async () => {
   const inputArray = ['hi', 'awesome'];
-  const myPromisified = async (myInput) => {
+  const myPromisified = async (myInput: string) => {
     return myInput;
   };
   const result = await smartpromise.map(inputArray, myPromisified);

test/test.readme.node.ts

@@ -1,5 +1,5 @@
 import * as smartpromise from '../ts/index.js';
-import { tap, expect } from '@push.rocks/tapbundle';
+import { tap, expect } from '@git.zone/tstest/tapbundle';
 
 tap.test('simple deferred should resolve with correct value', async () => {
   const done = smartpromise.defer<string>();