diff --git a/CMakeLists.txt b/CMakeLists.txt
index d5eec13..b7768bd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -76,7 +76,7 @@ foreach(lib screen dom component)
     PRIVATE src
   )
   target_compile_features(${lib} PUBLIC cxx_std_17)
-  target_compile_options(${lib} PRIVATE -Wall -Werror -Wextra)
+  target_compile_options(${lib} PRIVATE -Wall -Werror -pedantic -Wextra)
 endforeach()
 
 if(FTXUI_ENABLE_INSTALL)
diff --git a/examples/component/gallery.cpp b/examples/component/gallery.cpp
index 9458442..276cfa9 100644
--- a/examples/component/gallery.cpp
+++ b/examples/component/gallery.cpp
@@ -65,14 +65,10 @@ class MyComponent : public Component {
   Element Render() override {
     return
       vbox(
-        Render(L"menu", menu),
-        separator(),
-        Render(L"toggle", toggle),
-        separator(),
-        Render(L"checkbox", checkbox_container),
-        separator(),
-        Render(L"radiobox", radiobox),
-        separator(),
+        Render(L"menu", menu), separator(),
+        Render(L"toggle", toggle), separator(),
+        Render(L"checkbox", checkbox_container), separator(),
+        Render(L"radiobox", radiobox), separator(),
         Render(L"input", input) | size(WIDTH, LESS_THAN, 30)
       ) | border;
   }
diff --git a/include/ftxui/dom/elements.hpp b/include/ftxui/dom/elements.hpp
index 815f861..6a6828d 100644
--- a/include/ftxui/dom/elements.hpp
+++ b/include/ftxui/dom/elements.hpp
@@ -11,7 +11,7 @@ namespace ftxui {
 using Element = std::unique_ptr<Node>;
 using Elements = std::vector<Element>;
 using Decorator = std::function<Element(Element)>;
-using GraphFunction = std::function<std::vector<int>(int,int)>;
+using GraphFunction = std::function<std::vector<int>(int, int)>;
 
 // --- Widget ---
 Element text(std::wstring text);
@@ -22,7 +22,7 @@ Element border(Element);
 Decorator borderWith(Pixel);
 Element window(Element title, Element content);
 Element spinner(int charset_index, size_t image_index);
-Elements paragraph(std::wstring text); // Use inside hflow(). Split by space.
+Elements paragraph(std::wstring text);  // Use inside hflow(). Split by space.
 Element graph(GraphFunction);
 
 // -- Decorator ---
@@ -83,6 +83,6 @@ TAKE_ANY_ARGS(hbox)
 TAKE_ANY_ARGS(dbox)
 TAKE_ANY_ARGS(hflow)
 
-};  // namespace ftxui
+}  // namespace ftxui
 
 #endif /* end of include guard: FTXUI_DOM_ELEMENTS_HPP */
diff --git a/include/ftxui/dom/node.hpp b/include/ftxui/dom/node.hpp
index f055326..18b8405 100644
--- a/include/ftxui/dom/node.hpp
+++ b/include/ftxui/dom/node.hpp
@@ -37,6 +37,6 @@ class Node {
 
 void Render(Screen& screen, Node* node);
 
-};  // namespace ftxui
+}  // namespace ftxui
 
 #endif /* end of include guard: FTXUI_DOM_NODE_HPP */
diff --git a/include/ftxui/dom/requirement.hpp b/include/ftxui/dom/requirement.hpp
index b8cf19b..d3bda6a 100644
--- a/include/ftxui/dom/requirement.hpp
+++ b/include/ftxui/dom/requirement.hpp
@@ -21,6 +21,6 @@ struct Requirement {
   Box selected_box;
 };
 
-}; // namespace ftxui
+} // namespace ftxui
 
 #endif /* end of include guard: FTXUI_REQUIREMENT_HPP */
diff --git a/include/ftxui/screen/box.hpp b/include/ftxui/screen/box.hpp
index e1906be..e020b64 100644
--- a/include/ftxui/screen/box.hpp
+++ b/include/ftxui/screen/box.hpp
@@ -12,6 +12,6 @@ struct Box {
   static Box Intersection(Box a, Box b);
 };
 
-}; // namespace ftxui
+}  // namespace ftxui
 
 #endif /* end of include guard: FTXUI_SCREEN_BOX_HPP */
diff --git a/include/ftxui/screen/color.hpp b/include/ftxui/screen/color.hpp
index faeb35d..63eda3c 100644
--- a/include/ftxui/screen/color.hpp
+++ b/include/ftxui/screen/color.hpp
@@ -35,6 +35,6 @@ enum class Color : uint8_t {
   YellowLight = 93,
 };
 
-}; // namespace ftxui
+} // namespace ftxui
 
 #endif /* end of include guard: FTXUI_COLOR_H_ */
diff --git a/include/ftxui/screen/screen.hpp b/include/ftxui/screen/screen.hpp
index 3d1eae8..06c764a 100644
--- a/include/ftxui/screen/screen.hpp
+++ b/include/ftxui/screen/screen.hpp
@@ -75,6 +75,6 @@ class Screen {
   Cursor cursor_;
 };
 
-};  // namespace ftxui
+}  // namespace ftxui
 
 #endif /* end of include guard: FTXUI_SCREEN_SCREEN */
diff --git a/src/ftxui/component/event.cpp b/src/ftxui/component/event.cpp
index 0c0ff4f..f47470b 100644
--- a/src/ftxui/component/event.cpp
+++ b/src/ftxui/component/event.cpp
@@ -59,7 +59,7 @@ Event ParseCSI(std::function<char()> getchar, std::string& input) {
       return Event::Special(input);
 
     // Invalid ESC in CSI.
-    if (c == '\e')
+    if (c == '\x1B')
       return Event::Special(input);
   }
 }
@@ -68,7 +68,7 @@ Event ParseDCS(std::function<char()> getchar, std::string& input) {
   // Parse until the string terminator ST.
   while (1) {
     input += getchar();
-    if (input.back() != '\e')
+    if (input.back() != '\x1B')
       continue;
     input += getchar();
     if (input.back() != '\\')
@@ -81,7 +81,7 @@ Event ParseOSC(std::function<char()> getchar, std::string& input) {
   // Parse until the string terminator ST.
   while (1) {
     input += getchar();
-    if (input.back() != '\e')
+    if (input.back() != '\x1B')
       continue;
     input += getchar();
     if (input.back() != '\\')
@@ -115,7 +115,7 @@ Event Event::GetEvent(std::function<char()> getchar) {
     case 'P':
       return ParseDCS(getchar, input);
 
-    case '\e':
+    case '\x1B':
       return ParseESC(getchar, input);
   }
 
@@ -129,28 +129,28 @@ Event Event::GetEvent(std::function<char()> getchar) {
 }
 
 // --- Arrow ---
-Event Event::ArrowLeft = Event::Special("\e[D");
-Event Event::ArrowRight = Event::Special("\e[C");
-Event Event::ArrowUp = Event::Special("\e[A");
-Event Event::ArrowDown = Event::Special("\e[B");
+Event Event::ArrowLeft = Event::Special("\x1B[D");
+Event Event::ArrowRight = Event::Special("\x1B[C");
+Event Event::ArrowUp = Event::Special("\x1B[A");
+Event Event::ArrowDown = Event::Special("\x1B[B");
 Event Event::Backspace = Event::Special({127});
-Event Event::Delete = Event::Special("\e[3~");
-Event Event::Escape = Event::Special("\e");
+Event Event::Delete = Event::Special("\x1B[3~");
+Event Event::Escape = Event::Special("\x1B");
 Event Event::Return = Event::Special({10});
 Event Event::Tab = Event::Special({9});
 Event Event::TabReverse = Event::Special({27, 91, 90});
-Event Event::F1 = Event::Special("\e[OP");
-Event Event::F2 = Event::Special("\e[OQ");
-Event Event::F3 = Event::Special("\e[OR");
-Event Event::F4 = Event::Special("\e[OS");
-Event Event::F5 = Event::Special("\e[15~");
-Event Event::F6 = Event::Special("\e[17~");
-Event Event::F7 = Event::Special("\e[18~");
-Event Event::F8 = Event::Special("\e[19~");
-Event Event::F9 = Event::Special("\e[20~");
-Event Event::F10 = Event::Special("\e[21~");
-Event Event::F11 = Event::Special("\e[21~");  // Doesn't exist
-Event Event::F12 = Event::Special("\e[24~");
+Event Event::F1 = Event::Special("\x1B[OP");
+Event Event::F2 = Event::Special("\x1B[OQ");
+Event Event::F3 = Event::Special("\x1B[OR");
+Event Event::F4 = Event::Special("\x1B[OS");
+Event Event::F5 = Event::Special("\x1B[15~");
+Event Event::F6 = Event::Special("\x1B[17~");
+Event Event::F7 = Event::Special("\x1B[18~");
+Event Event::F8 = Event::Special("\x1B[19~");
+Event Event::F9 = Event::Special("\x1B[20~");
+Event Event::F10 = Event::Special("\x1B[21~");
+Event Event::F11 = Event::Special("\x1B[21~");  // Doesn't exist
+Event Event::F12 = Event::Special("\x1B[24~");
 Event Event::Custom = Event::Special({0});
 
 }  // namespace ftxui
diff --git a/src/ftxui/component/screen_interactive.cpp b/src/ftxui/component/screen_interactive.cpp
index d8c9231..c9f915a 100644
--- a/src/ftxui/component/screen_interactive.cpp
+++ b/src/ftxui/component/screen_interactive.cpp
@@ -18,11 +18,11 @@
 
 namespace ftxui {
 
-static const char* HIDE_CURSOR = "\e[?25l";
-static const char* SHOW_CURSOR = "\e[?25h";
+static const char* HIDE_CURSOR = "\x1B[?25l";
+static const char* SHOW_CURSOR = "\x1B[?25h";
 
-static const char* DISABLE_LINE_WRAP = "\e[7l";
-static const char* ENABLE_LINE_WRAP = "\e[7h";
+static const char* DISABLE_LINE_WRAP = "\x1B[7l";
+static const char* ENABLE_LINE_WRAP = "\x1B[7h";
 
 std::stack<std::function<void()>> on_exit_functions;
 void OnExit(int signal) {
@@ -188,12 +188,12 @@ void ScreenInteractive::Draw(Component* component) {
   int dy = dimy_ - 1 - cursor_.y;
 
   if (dx != 0) {
-    set_cursor_position += "\e[" + std::to_string(dx) + "D";
-    reset_cursor_position += "\e[" + std::to_string(dx) + "C";
+    set_cursor_position += "\x1B[" + std::to_string(dx) + "D";
+    reset_cursor_position += "\x1B[" + std::to_string(dx) + "C";
   }
   if (dy != 0) {
-    set_cursor_position +=  "\e[" + std::to_string(dy) + "A";
-    reset_cursor_position += "\e[" + std::to_string(dy) + "B";
+    set_cursor_position +=  "\x1B[" + std::to_string(dy) + "A";
+    reset_cursor_position += "\x1B[" + std::to_string(dy) + "B";
   }
 }
 
diff --git a/src/ftxui/dom/blink.cpp b/src/ftxui/dom/blink.cpp
index 80debd6..936eed3 100644
--- a/src/ftxui/dom/blink.cpp
+++ b/src/ftxui/dom/blink.cpp
@@ -22,4 +22,4 @@ std::unique_ptr<Node> blink(Element child) {
   return std::make_unique<Blink>(unpack(std::move(child)));
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/dom/bold.cpp b/src/ftxui/dom/bold.cpp
index dbce334..cbd9a70 100644
--- a/src/ftxui/dom/bold.cpp
+++ b/src/ftxui/dom/bold.cpp
@@ -22,4 +22,4 @@ std::unique_ptr<Node> bold(Element child) {
   return std::make_unique<Bold>(unpack(std::move(child)));
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/dom/border.cpp b/src/ftxui/dom/border.cpp
index 90bf0c2..ee50ac0 100644
--- a/src/ftxui/dom/border.cpp
+++ b/src/ftxui/dom/border.cpp
@@ -115,4 +115,4 @@ Decorator borderWith(Pixel pixel) {
   };
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/dom/color.cpp b/src/ftxui/dom/color.cpp
index 8d5bedf..29a5b67 100644
--- a/src/ftxui/dom/color.cpp
+++ b/src/ftxui/dom/color.cpp
@@ -58,4 +58,4 @@ Decorator bgcolor(Color c) {
   };
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/dom/dbox.cpp b/src/ftxui/dom/dbox.cpp
index c72db4b..fd96383 100644
--- a/src/ftxui/dom/dbox.cpp
+++ b/src/ftxui/dom/dbox.cpp
@@ -37,4 +37,4 @@ std::unique_ptr<Node> dbox(Elements children) {
   return std::make_unique<DBox>(std::move(children));
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/dom/dim.cpp b/src/ftxui/dom/dim.cpp
index f5b622f..8a80abe 100644
--- a/src/ftxui/dom/dim.cpp
+++ b/src/ftxui/dom/dim.cpp
@@ -24,4 +24,4 @@ std::unique_ptr<Node> dim(Element child) {
   return std::make_unique<Dim>(unpack(std::move(child)));
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/dom/flex.cpp b/src/ftxui/dom/flex.cpp
index d25f4d3..6ff5910 100644
--- a/src/ftxui/dom/flex.cpp
+++ b/src/ftxui/dom/flex.cpp
@@ -55,4 +55,4 @@ std::unique_ptr<Node> notflex(Element child) {
   return std::make_unique<NotFlex>(std::move(child));
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/dom/frame.cpp b/src/ftxui/dom/frame.cpp
index 958ce65..d154bf8 100644
--- a/src/ftxui/dom/frame.cpp
+++ b/src/ftxui/dom/frame.cpp
@@ -123,4 +123,4 @@ std::unique_ptr<Node> frame(Element child) {
   return std::make_unique<Frame>(unpack(std::move(child)));
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/dom/gauge.cpp b/src/ftxui/dom/gauge.cpp
index f9a2c97..4755bae 100644
--- a/src/ftxui/dom/gauge.cpp
+++ b/src/ftxui/dom/gauge.cpp
@@ -36,4 +36,4 @@ std::unique_ptr<Node> gauge(float progress) {
   return std::make_unique<Gauge>(progress);
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/dom/graph.cpp b/src/ftxui/dom/graph.cpp
index efe8555..520dd38 100644
--- a/src/ftxui/dom/graph.cpp
+++ b/src/ftxui/dom/graph.cpp
@@ -42,4 +42,4 @@ std::unique_ptr<Node> graph(GraphFunction graph_function) {
   return std::make_unique<Graph>(graph_function);
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/dom/hbox.cpp b/src/ftxui/dom/hbox.cpp
index 00a71f0..4272d3e 100644
--- a/src/ftxui/dom/hbox.cpp
+++ b/src/ftxui/dom/hbox.cpp
@@ -69,4 +69,4 @@ std::unique_ptr<Node> hbox(Elements children) {
   return std::make_unique<HBox>(std::move(children));
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/dom/hflow.cpp b/src/ftxui/dom/hflow.cpp
index bf49251..1904f9f 100644
--- a/src/ftxui/dom/hflow.cpp
+++ b/src/ftxui/dom/hflow.cpp
@@ -56,4 +56,4 @@ std::unique_ptr<Node> hflow(Elements children) {
   return std::make_unique<HFlow>(std::move(children));
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/dom/inverted.cpp b/src/ftxui/dom/inverted.cpp
index 7b9fa5e..eb39278 100644
--- a/src/ftxui/dom/inverted.cpp
+++ b/src/ftxui/dom/inverted.cpp
@@ -24,4 +24,4 @@ std::unique_ptr<Node> inverted(Element child) {
   return std::make_unique<Inverted>(unpack(std::move(child)));
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/dom/node.cpp b/src/ftxui/dom/node.cpp
index c1798ba..f30330e 100644
--- a/src/ftxui/dom/node.cpp
+++ b/src/ftxui/dom/node.cpp
@@ -44,4 +44,4 @@ void Render(Screen& screen, Node* node) {
   screen.ApplyShader();
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/dom/node_decorator.cpp b/src/ftxui/dom/node_decorator.cpp
index 73061f9..f690e57 100644
--- a/src/ftxui/dom/node_decorator.cpp
+++ b/src/ftxui/dom/node_decorator.cpp
@@ -12,4 +12,4 @@ void NodeDecorator::SetBox(Box box) {
   children[0]->SetBox(box);
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/dom/node_decorator.hpp b/src/ftxui/dom/node_decorator.hpp
index 42f4025..fc94502 100644
--- a/src/ftxui/dom/node_decorator.hpp
+++ b/src/ftxui/dom/node_decorator.hpp
@@ -15,6 +15,6 @@ class NodeDecorator : public Node {
   void SetBox(Box box) override;
 };
 
-};  // namespace ftxui
+}  // namespace ftxui
 
 #endif /* end of include guard: FTXUI_DOM_NODE_DECORATOR_H_ */
diff --git a/src/ftxui/dom/separator.cpp b/src/ftxui/dom/separator.cpp
index a59fbea..0c86327 100644
--- a/src/ftxui/dom/separator.cpp
+++ b/src/ftxui/dom/separator.cpp
@@ -53,4 +53,4 @@ std::unique_ptr<Node> separator(Pixel pixel) {
   return std::make_unique<SeparatorWithPixel>(pixel);
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/dom/size.cpp b/src/ftxui/dom/size.cpp
index 0439551..d4b5af4 100644
--- a/src/ftxui/dom/size.cpp
+++ b/src/ftxui/dom/size.cpp
@@ -74,4 +74,4 @@ Decorator size(Direction direction, Constraint constraint, int value) {
   };
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/dom/spinner.cpp b/src/ftxui/dom/spinner.cpp
index 9bf5fad..b9b4b31 100644
--- a/src/ftxui/dom/spinner.cpp
+++ b/src/ftxui/dom/spinner.cpp
@@ -276,4 +276,4 @@ std::unique_ptr<Node> spinner(int c, size_t index) {
   return vbox(std::move(lines));
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/dom/text.cpp b/src/ftxui/dom/text.cpp
index 1206192..e58a1e1 100644
--- a/src/ftxui/dom/text.cpp
+++ b/src/ftxui/dom/text.cpp
@@ -36,4 +36,4 @@ std::unique_ptr<Node> text(std::wstring text) {
   return std::make_unique<Text>(text);
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/dom/underlined.cpp b/src/ftxui/dom/underlined.cpp
index 42b11a6..7c51108 100644
--- a/src/ftxui/dom/underlined.cpp
+++ b/src/ftxui/dom/underlined.cpp
@@ -24,4 +24,4 @@ std::unique_ptr<Node> underlined(Element child) {
   return std::make_unique<Underlined>(unpack(std::move(child)));
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/dom/vbox.cpp b/src/ftxui/dom/vbox.cpp
index a9d77e0..6d0a353 100644
--- a/src/ftxui/dom/vbox.cpp
+++ b/src/ftxui/dom/vbox.cpp
@@ -69,4 +69,4 @@ std::unique_ptr<Node> vbox(Elements children) {
   return std::make_unique<VBox>(std::move(children));
 }
 
-};  // namespace ftxui
+}  // namespace ftxui
diff --git a/src/ftxui/screen/screen.cpp b/src/ftxui/screen/screen.cpp
index c6ad86f..525d204 100644
--- a/src/ftxui/screen/screen.cpp
+++ b/src/ftxui/screen/screen.cpp
@@ -8,24 +8,24 @@
 namespace ftxui {
 
 namespace {
-static const wchar_t* BOLD_SET = L"\e[1m";
-static const wchar_t* BOLD_RESET = L"\e[22m";  // Can't use 21 here.
+static const wchar_t* BOLD_SET = L"\x1B[1m";
+static const wchar_t* BOLD_RESET = L"\x1B[22m";  // Can't use 21 here.
 
-static const wchar_t* DIM_SET = L"\e[2m";
-static const wchar_t* DIM_RESET = L"\e[22m";
+static const wchar_t* DIM_SET = L"\x1B[2m";
+static const wchar_t* DIM_RESET = L"\x1B[22m";
 
-static const wchar_t* UNDERLINED_SET = L"\e[4m";
-static const wchar_t* UNDERLINED_RESET = L"\e[24m";
+static const wchar_t* UNDERLINED_SET = L"\x1B[4m";
+static const wchar_t* UNDERLINED_RESET = L"\x1B[24m";
 
-static const wchar_t* BLINK_SET = L"\e[5m";
-static const wchar_t* BLINK_RESET = L"\e[25m";
+static const wchar_t* BLINK_SET = L"\x1B[5m";
+static const wchar_t* BLINK_RESET = L"\x1B[25m";
 
-static const wchar_t* INVERTED_SET = L"\e[7m";
-static const wchar_t* INVERTED_RESET = L"\e[27m";
+static const wchar_t* INVERTED_SET = L"\x1B[7m";
+static const wchar_t* INVERTED_RESET = L"\x1B[27m";
 
 static const char* MOVE_LEFT = "\r";
-static const char* MOVE_UP = "\e[1A";
-static const char* CLEAR_LINE = "\e[2K";
+static const char* MOVE_UP = "\x1B[1A";
+static const char* CLEAR_LINE = "\x1B[2K";
 
 bool In(const Box& stencil, int x, int y) {
   return stencil.x_min <= x && x <= stencil.x_max &&  //
@@ -86,9 +86,9 @@ void UpdatePixelStyle(std::wstringstream& ss, Pixel& previous, Pixel& next) {
 
   if (next.foreground_color != previous.foreground_color ||
       next.background_color != previous.background_color) {
-    ss << L"\e[" + to_wstring(std::to_string((uint8_t)next.foreground_color)) +
-              L"m";
-    ss << L"\e[" +
+    ss << L"\x1B[" +
+              to_wstring(std::to_string((uint8_t)next.foreground_color)) + L"m";
+    ss << L"\x1B[" +
               to_wstring(std::to_string(10 + (uint8_t)next.background_color)) +
               L"m";
   }
@@ -168,4 +168,4 @@ void Screen::ApplyShader() {
 }
 // clang-format on
 
-};  // namespace ftxui
+}  // namespace ftxui