fix(waitFor) leaking callback

Author: KevinBonHubspot

src/wait-for.js

@@ -16,7 +16,7 @@ function copyStackTrace(target, source) {
 }
 
 function waitFor(
-  callback,
+  originalCallback,
   {
     container = getDocument(),
     timeout = getConfig().asyncUtilTimeout,
@@ -41,6 +41,10 @@ function waitFor(
     throw new TypeError('Received `callback` arg must be a function')
   }
 
+  // callback will be replaced by a noop function as soon as it finishes
+  // to prevent callback leaking calls
+  let callback = originalCallback;
+
   return new Promise(async (resolve, reject) => {
     let lastError, intervalId, observer
     let finished = false
@@ -107,6 +111,7 @@ function waitFor(
 
     function onDone(error, result) {
       finished = true
+      callback = () => {};
       clearTimeout(overallTimeoutTimer)
 
       if (!usingJestFakeTimers) {