Ensure code samples matched exercises

Author: mattpocock

exercises/05-createComponent.code.ts

@@ -2,7 +2,7 @@ export const createComponent = <TConfig extends Record<string, string>>(
   config: TConfig,
 ) => {
   return (variant: keyof TConfig, ...otherClasses: string[]): string => {
-    return [config[variant], otherClasses].join(" ");
+    return config[variant] + " " + otherClasses.join(" ");
   };
 };
 

exercises/07-databaseSeeder.exercise.ts

@@ -170,14 +170,10 @@ const usage = async () => {
 
 /**
  * 🛠 We're going to build this up again from scratch. To
- * get started, comment out DbSeeder AND usage above, and
- * uncomment DbSeeder and usage below:
+ * get started, comment out DbSeeder AND usage. Add the
+ * commented-out code above INSTEAD and uncomment it.
  */
 
-/**
- * 💡 Note that DbSeeder is no longer generic. Neither
- * are addUser and addPost.
- */
 // export class DbSeeder {
 //   public users: DbShape["users"] = {};
 //   public posts: DbShape["posts"] = {};

exercises/08-removeMapsFromObj.code.ts

@@ -25,5 +25,3 @@ export const removeMapsPrefixFromObj = <TObj>(
   }
   return newObj;
 };
-
-const newObj = removeMapsPrefixFromObj({ "maps:longitude": 12 });

exercises/09-router.code.ts

@@ -32,9 +32,8 @@ const routes = makeRouter({
   },
 });
 
+routes.goTo("/");
 routes.goTo("/dashboard", {
   page: "1",
   something: "",
 });
-
-routes.goTo("/");