Solution

src/App.scss

@@ -1,3 +1,5 @@
+@import 'bulma/css/bulma.min.css';
+
 iframe {
   display: none;
 }

src/App.tsx

@@ -1,73 +1,26 @@
-import React from 'react';
+import React, { useState } from 'react';
 import './App.scss';
 import { peopleFromServer } from './data/people';
+import { Person } from './types/Person';
+import Input from './components/Input';
 
 export const App: React.FC = () => {
-  const { name, born, died } = peopleFromServer[0];
+  const [selectedPerson, setSelectedPerson] = useState<Person | null>(null);
 
   return (
     <div className="container">
       <main className="section is-flex is-flex-direction-column">
-        <h1 className="title" data-cy="title">
-          {`${name} (${born} - ${died})`}
+        <h1 className="title" data-cy="title" data-qa="title">
+          {selectedPerson
+            ? `${selectedPerson.name} (${selectedPerson.born} - ${selectedPerson.died})`
+            : 'No selected person'}
         </h1>
-
-        <div className="dropdown is-active">
-          <div className="dropdown-trigger">
-            <input
-              type="text"
-              placeholder="Enter a part of the name"
-              className="input"
-              data-cy="search-input"
-            />
-          </div>
-
-          <div className="dropdown-menu" role="menu" data-cy="suggestions-list">
-            <div className="dropdown-content">
-              <div className="dropdown-item" data-cy="suggestion-item">
-                <p className="has-text-link">Pieter Haverbeke</p>
-              </div>
-
-              <div className="dropdown-item" data-cy="suggestion-item">
-                <p className="has-text-link">Pieter Bernard Haverbeke</p>
-              </div>
-
-              <div className="dropdown-item" data-cy="suggestion-item">
-                <p className="has-text-link">Pieter Antone Haverbeke</p>
-              </div>
-
-              <div className="dropdown-item" data-cy="suggestion-item">
-                <p className="has-text-danger">Elisabeth Haverbeke</p>
-              </div>
-
-              <div className="dropdown-item" data-cy="suggestion-item">
-                <p className="has-text-link">Pieter de Decker</p>
-              </div>
-
-              <div className="dropdown-item" data-cy="suggestion-item">
-                <p className="has-text-danger">Petronella de Decker</p>
-              </div>
-
-              <div className="dropdown-item" data-cy="suggestion-item">
-                <p className="has-text-danger">Elisabeth Hercke</p>
-              </div>
-            </div>
-          </div>
-        </div>
-
-        <div
-          className="
-            notification
-            is-danger
-            is-light
-            mt-3
-            is-align-self-flex-start
-          "
-          role="alert"
-          data-cy="no-suggestions-message"
-        >
-          <p className="has-text-danger">No matching suggestions</p>
-        </div>
+        <Input
+          people={peopleFromServer}
+          delay={300}
+          onSelected={person => setSelectedPerson(person)}
+          onInputChange={() => setSelectedPerson(null)}
+        />
       </main>
     </div>
   );

src/components/Input.tsx

@@ -0,0 +1,108 @@
+import { Person } from '../types/Person';
+import { useEffect, useRef, useState } from 'react';
+interface Props {
+  people: Person[];
+  delay?: number;
+  onSelected: (person: Person) => void;
+  onInputChange?: () => void;
+}
+
+export default function Input({
+  people,
+  delay = 300,
+  onSelected,
+  onInputChange,
+}: Props) {
+  const [query, setQuery] = useState('');
+  const [isOpen, setIsOpen] = useState(false);
+  const [suggestions, setSuggestions] = useState<Person[]>([]);
+  const lastTrimmedRef = useRef('');
+
+  useEffect(() => {
+    const trimmed = query.trim().toLowerCase();
+
+    if (lastTrimmedRef.current === trimmed) {
+      return;
+    }
+
+    lastTrimmedRef.current = trimmed;
+
+    const timeout = window.setTimeout(() => {
+      const nextSuggestions =
+        trimmed === ''
+          ? people
+          : people.filter(pers => pers.name.toLowerCase().includes(trimmed));
+
+      setSuggestions(nextSuggestions);
+    }, delay);
+
+    return () => {
+      clearTimeout(timeout);
+    };
+  }, [query, delay, people]);
+
+  const handleSelect = (selectedPerson: Person) => {
+    setQuery(selectedPerson.name);
+    setIsOpen(false);
+    onSelected(selectedPerson);
+  };
+
+  return (
+    <div className={isOpen ? 'dropdown is-active' : 'dropdown'}>
+      <div className="dropdown-trigger">
+        <input
+          className="input is-medium"
+          type="text"
+          placeholder="Enter a part of the name"
+          value={query}
+          onChange={e => {
+            setQuery(e.target.value);
+            setIsOpen(true);
+            onInputChange?.();
+          }}
+          onFocus={() => {
+            setIsOpen(true);
+            if (query.trim() === '') {
+              setSuggestions(people);
+            }
+          }}
+          data-cy="search-input"
+          data-qa="search-input"
+        />
+      </div>
+      <div className="dropdown-menu" id="dropdown-menu" role="menu">
+        <div
+          className="dropdown-content"
+          data-cy="suggestions-list"
+          data-qa="suggestions-list"
+        >
+          {query.trim() !== '' && suggestions.length === 0 ? (
+            <div
+              className="dropdown-item"
+              data-cy="no-suggestions-message"
+              data-qa="no-suggestions-message"
+            >
+              No matching suggestions
+            </div>
+          ) : (
+            suggestions.map(pers => (
+              <button
+                key={pers.slug}
+                type="button"
+                className="dropdown-item"
+                data-cy="suggestion-item"
+                data-qa="suggestion-item"
+                onMouseDown={e => {
+                  e.preventDefault();
+                  handleSelect(pers);
+                }}
+              >
+                {pers.name}
+              </button>
+            ))
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}