Remove Belt from array-and-keys.mdx

Author: nojaf

bun.lockb

@@ -19,8 +19,8 @@ Keys help React identify which elements have been changed, added, or removed thr
 ```res
 let numbers = [1, 2, 3, 4, 5];
 
-let items = Belt.Array.map(numbers, (number) => {
-  <li key={Belt.Int.toString(number)}> {React.int(number)} </li>
+let items = Array.map(numbers, (number) => {
+  <li key={Int.toString(number)}> {React.int(number)} </li>
 })
 ```
 
@@ -34,17 +34,17 @@ let todos = [
   {id: "todo2", text: "Todo 2"}
 ]
 
-let items = Belt.Array.map(todos, todo => {
+let items = Array.map(todos, todo => {
   <li key={todo.id}> {React.string(todo.text)} </li>
 })
 ```
 
 If you don’t have stable IDs for rendered items, you may use the item index as a key as a last resort:
 
 ```res {1..3}
-let items = Belt.Array.mapWithIndex(todos, (i, todo) => {
+let items = Array.mapWithIndex(todos, (i, todo) => {
   // Only do this if items have no stable id
-  <li key={Belt.Int.toString(i)}>
+  <li key={Int.toString(i)}>
     {todo.text}
   </li>
 });
@@ -63,15 +63,15 @@ module Blog = {
     let sidebar =
       <ul>
         {
-          Belt.Array.map(posts, (post) => {
+          Array.map(posts, (post) => {
             <li key={post.id}>
               {React.string(post.title)}
             </li>
           })->React.array
         }
       </ul>
 
-    let content = Belt.Array.map(posts, (post) => {
+    let content = Array.map(posts, (post) => {
         <div key={post.id}>
           <h3>{React.string(post.title)}</h3>
           <p>{React.string(post.content)}</p>
@@ -111,8 +111,8 @@ let make = () => {
 
   let items =
     todoList
-    ->Belt.List.toArray
-    ->Belt.Array.map(todo => {
+    ->List.toArray
+    ->Array.map(todo => {
       <li key={todo.id}> {React.string(todo.text)} </li>
     })
 
@@ -121,7 +121,7 @@ let make = () => {
 
 ```
 
-We use `Belt.List.toArray` to convert our list to an array before creating our `array<React.element>`. Please note that using `list` has performance impact due to extra conversion costs.
+We use `List.toArray` to convert our list to an array before creating our `array<React.element>`. Please note that using `list` has performance impact due to extra conversion costs.
 
 99% of the time you'll want to use arrays (seamless interop, faster JS code), but in some cases it might make sense to use a `list` to leverage advanced pattern matching features etc.