chore(xen-api): use @vates/coalesce-calls

packages/xen-api/package.json

@@ -31,6 +31,7 @@
     "node": ">=7.6"
   },
   "dependencies": {
+    "@vates/coalesce-calls": "^0.1.0",
     "bind-property-descriptor": "^1.0.0",
     "blocked": "^1.2.1",
     "debug": "^4.0.1",

packages/xen-api/src/_coalesceCalls.js

@@ -1,15 +0,0 @@
-// decorates fn so that more than one concurrent calls will be coalesced
-export default function coalesceCalls(fn) {
-  let promise
-  const clean = () => {
-    promise = undefined
-  }
-  return function () {
-    if (promise !== undefined) {
-      return promise
-    }
-    promise = fn.apply(this, arguments)
-    promise.then(clean, clean)
-    return promise
-  }
-}

packages/xen-api/src/_coalesceCalls.spec.js

@@ -1,26 +0,0 @@
-/* eslint-env jest */
-
-import pDefer from 'promise-toolbox/defer'
-
-import coalesceCalls from './_coalesceCalls'
-
-describe('coalesceCalls', () => {
-  it('decorates an async function', async () => {
-    const fn = coalesceCalls(promise => promise)
-
-    const defer1 = pDefer()
-    const promise1 = fn(defer1.promise)
-    const defer2 = pDefer()
-    const promise2 = fn(defer2.promise)
-
-    defer1.resolve('foo')
-    expect(await promise1).toBe('foo')
-    expect(await promise2).toBe('foo')
-
-    const defer3 = pDefer()
-    const promise3 = fn(defer3.promise)
-
-    defer3.resolve('bar')
-    expect(await promise3).toBe('bar')
-  })
-})