initial

test/test.ts

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+import { expect, tap } from 'tapbundle'
+
+import * as smartevent from '../dist/index'
+
+let myEventEmitter: smartevent.EventEmitter
+
+tap.test('should create an emitter ->', async () => {
+  myEventEmitter = new smartevent.EventEmitter()
+  expect(myEventEmitter).to.be.instanceof(smartevent.EventEmitter)
+})
+
+tap.test('smartevent.once -> should return a promise', async () => {
+  let oncePromise = smartevent.once(myEventEmitter, 'customEvent')
+  expect(oncePromise).to.be.instanceof(Promise)
+  expect(oncePromise).to.not.be.fulfilled
+  myEventEmitter.emit('customEvent')
+  await expect(oncePromise).to.eventually.be.fulfilled
+})
+
+tap.start()