diff --git a/curriculum/challenges/english/03-front-end-development-libraries/react-and-redux/manage-state-locally-first.md b/curriculum/challenges/english/03-front-end-development-libraries/react-and-redux/manage-state-locally-first.md
index ec7c618f3d3..ad6b98eaccb 100644
--- a/curriculum/challenges/english/03-front-end-development-libraries/react-and-redux/manage-state-locally-first.md
+++ b/curriculum/challenges/english/03-front-end-development-libraries/react-and-redux/manage-state-locally-first.md
@@ -39,15 +39,13 @@ assert(
 The `DisplayMessages` component should render a `div` containing an `h2` element, a `button` element, a `ul` element, and `li` elements as children.
 
 ```js
-async () => {
+() => {
   const mockedComponent = Enzyme.mount(React.createElement(DisplayMessages));
-  const waitForIt = (fn) =>
-    new Promise((resolve, reject) => setTimeout(() => resolve(fn()), 100));
   const state = () => {
     mockedComponent.setState({ messages: ['__TEST__MESSAGE'] });
-    return waitForIt(() => mockedComponent);
+    return mockedComponent;
   };
-  const updated = await state();
+  const updated = state();
   assert(
     updated.find('div').length === 1 &&
       updated.find('h2').length === 1 &&
@@ -67,18 +65,16 @@ assert(code.match(/this\.state\.messages\.map/g));
 The `input` element should render the value of `input` in local state.
 
 ```js
-async () => {
+() => {
   const mockedComponent = Enzyme.mount(React.createElement(DisplayMessages));
-  const waitForIt = (fn) =>
-    new Promise((resolve, reject) => setTimeout(() => resolve(fn()), 100));
   const causeChange = (c, v) =>
     c.find('input').simulate('change', { target: { value: v } });
   const testValue = '__TEST__EVENT__INPUT';
   const changed = () => {
     causeChange(mockedComponent, testValue);
-    return waitForIt(() => mockedComponent);
+    return mockedComponent;
   };
-  const updated = await changed();
+  const updated = changed();
   assert(updated.find('input').props().value === testValue);
 };
 ```
@@ -86,19 +82,17 @@ async () => {
 Calling the method `handleChange` should update the `input` value in state to the current input.
 
 ```js
-async () => {
+() => {
   const mockedComponent = Enzyme.mount(React.createElement(DisplayMessages));
-  const waitForIt = (fn) =>
-    new Promise((resolve, reject) => setTimeout(() => resolve(fn()), 100));
   const causeChange = (c, v) =>
     c.find('input').simulate('change', { target: { value: v } });
   const initialState = mockedComponent.state();
   const testMessage = '__TEST__EVENT__MESSAGE__';
   const changed = () => {
     causeChange(mockedComponent, testMessage);
-    return waitForIt(() => mockedComponent);
+    return mockedComponent;
   };
-  const afterInput = await changed();
+  const afterInput = changed();
   assert(
     initialState.input === '' &&
       afterInput.state().input === '__TEST__EVENT__MESSAGE__'
@@ -109,36 +103,34 @@ async () => {
 Clicking the `Add message` button should call the method `submitMessage` which should add the current `input` to the `messages` array in state.
 
 ```js
-async () => {
+() => {
   const mockedComponent = Enzyme.mount(React.createElement(DisplayMessages));
-  const waitForIt = (fn) =>
-    new Promise((resolve, reject) => setTimeout(() => resolve(fn()), 100));
   const causeChange = (c, v) =>
     c.find('input').simulate('change', { target: { value: v } });
   const initialState = mockedComponent.state();
   const testMessage_1 = '__FIRST__MESSAGE__';
   const firstChange = () => {
     causeChange(mockedComponent, testMessage_1);
-    return waitForIt(() => mockedComponent);
+    return mockedComponent;
   };
-  const firstResult = await firstChange();
+  const firstResult = firstChange();
   const firstSubmit = () => {
     mockedComponent.find('button').simulate('click');
-    return waitForIt(() => mockedComponent);
+    return mockedComponent;
   };
-  const afterSubmit_1 = await firstSubmit();
+  const afterSubmit_1 = firstSubmit();
   const submitState_1 = afterSubmit_1.state();
   const testMessage_2 = '__SECOND__MESSAGE__';
   const secondChange = () => {
     causeChange(mockedComponent, testMessage_2);
-    return waitForIt(() => mockedComponent);
+    return mockedComponent;
   };
-  const secondResult = await secondChange();
+  const secondResult = secondChange();
   const secondSubmit = () => {
     mockedComponent.find('button').simulate('click');
-    return waitForIt(() => mockedComponent);
+    return mockedComponent;
   };
-  const afterSubmit_2 = await secondSubmit();
+  const afterSubmit_2 = secondSubmit();
   const submitState_2 = afterSubmit_2.state();
   assert(
     initialState.messages.length === 0 &&
@@ -152,25 +144,23 @@ async () => {
 The `submitMessage` method should clear the current input.
 
 ```js
-async () => {
+() => {
   const mockedComponent = Enzyme.mount(React.createElement(DisplayMessages));
-  const waitForIt = (fn) =>
-    new Promise((resolve, reject) => setTimeout(() => resolve(fn()), 100));
   const causeChange = (c, v) =>
     c.find('input').simulate('change', { target: { value: v } });
   const initialState = mockedComponent.state();
   const testMessage = '__FIRST__MESSAGE__';
   const firstChange = () => {
     causeChange(mockedComponent, testMessage);
-    return waitForIt(() => mockedComponent);
+    return mockedComponent;
   };
-  const firstResult = await firstChange();
+  const firstResult = firstChange();
   const firstState = firstResult.state();
   const firstSubmit = () => {
     mockedComponent.find('button').simulate('click');
-    return waitForIt(() => mockedComponent);
+    return mockedComponent;
   };
-  const afterSubmit = await firstSubmit();
+  const afterSubmit = firstSubmit();
   const submitState = afterSubmit.state();
   assert(firstState.input === testMessage && submitState.input === '');
 };
diff --git a/curriculum/challenges/english/03-front-end-development-libraries/react/use-a-ternary-expression-for-conditional-rendering.md b/curriculum/challenges/english/03-front-end-development-libraries/react/use-a-ternary-expression-for-conditional-rendering.md
index 33292905237..fbf6f63bbff 100644
--- a/curriculum/challenges/english/03-front-end-development-libraries/react/use-a-ternary-expression-for-conditional-rendering.md
+++ b/curriculum/challenges/english/03-front-end-development-libraries/react/use-a-ternary-expression-for-conditional-rendering.md
@@ -161,7 +161,7 @@ Your code should not contain any `if/else` statements.
 ```js
 assert(
   new RegExp(/(\s|;)if(\s|\()/).test(
-    Enzyme.mount(React.createElement(CheckUserAge)).instance().render.toString()
+    code
   ) === false
 );
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-139.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-139.md
index 3f45adcb867..e65022a4c70 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-139.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-139.md
@@ -26,13 +26,11 @@ while(i < 5) {
 See description above for instructions.
 
 ```js
-assert(
+assert.include(
   pick
     .toString()
-    .replace(/\s/g, '')
-    .includes(
-      'while(numbers.length<10){if(_LPC++%2000===0&&Date.now()-_LP>1500){'
-    )
+    .replace(/\s/g, ''),
+      'while(numbers.length<10){'
 );
 ```