set chai-as-promised to dynamic import

test/mocha.setup.js

@@ -6,7 +6,7 @@ process.on('unhandledRejection', (e) => {
 // enable the should interface with sinon
 // and load chai-as-promised and sinon-chai by default
 const sinonChai = require('sinon-chai');
-const chaiAsPromised = require('chai-as-promised');
+const chaiAsPromised = (...args) => import('chai-as-promised').then(({default: chaiAsPromised}) => chaiAsPromised(...args));
 const { should, use } = require('chai');
 
 should();