diff --git a/packages/core/src/index.ts b/packages/core/src/index.ts
new file mode 100644
index 0000000..549d64f
--- /dev/null
+++ b/packages/core/src/index.ts
@@ -0,0 +1,31 @@
+// packages/core/src/index.ts
+// Main entry — re-exports everything for convenience.
+// Prefer sub-path imports (e.g. "pettyui/dialog") for tree-shaking.
+
+export { Dialog } from "./components/dialog/index";
+export type { DialogRootProps } from "./components/dialog/dialog-root";
+export type { DialogContentProps } from "./components/dialog/dialog-content";
+export type { DialogTitleProps } from "./components/dialog/dialog-title";
+export type { DialogDescriptionProps } from "./components/dialog/dialog-description";
+export type { DialogTriggerProps } from "./components/dialog/dialog-trigger";
+export type { DialogCloseProps } from "./components/dialog/dialog-close";
+export type { DialogPortalProps } from "./components/dialog/dialog-portal";
+export type { DialogOverlayProps } from "./components/dialog/dialog-overlay";
+
+export { Presence } from "./utilities/presence/index";
+export type { PresenceProps, PresenceChildProps } from "./utilities/presence/index";
+
+export { Portal } from "./utilities/portal/index";
+export type { PortalProps } from "./utilities/portal/index";
+
+export { VisuallyHidden } from "./utilities/visually-hidden/index";
+export type { VisuallyHiddenProps } from "./utilities/visually-hidden/index";
+
+export { createFocusTrap } from "./utilities/focus-trap/index";
+export type { FocusTrap } from "./utilities/focus-trap/index";
+
+export { createScrollLock } from "./utilities/scroll-lock/index";
+export type { ScrollLock } from "./utilities/scroll-lock/index";
+
+export { createDismiss } from "./utilities/dismiss/index";
+export type { CreateDismissOptions, Dismiss } from "./utilities/dismiss/index";
diff --git a/packages/core/src/primitives/create-disclosure-state.ts b/packages/core/src/primitives/create-disclosure-state.ts
index 7e9a6b0..67ee140 100644
--- a/packages/core/src/primitives/create-disclosure-state.ts
+++ b/packages/core/src/primitives/create-disclosure-state.ts
@@ -19,9 +19,7 @@ export interface DisclosureState {
  * Tooltip, Collapsible, etc.). Wraps createControllableSignal with
  * convenience open/close/toggle methods.
  */
-export function createDisclosureState(
-  options: CreateDisclosureStateOptions,
-): DisclosureState {
+export function createDisclosureState(options: CreateDisclosureStateOptions): DisclosureState {
   const [isOpen, setIsOpen] = createControllableSignal<boolean>({
     value: () => options.open,
     defaultValue: () => options.defaultOpen ?? false,
diff --git a/packages/core/src/utilities/focus-trap/create-focus-trap.ts b/packages/core/src/utilities/focus-trap/create-focus-trap.ts
index c3dcc8d..b58cc50 100644
--- a/packages/core/src/utilities/focus-trap/create-focus-trap.ts
+++ b/packages/core/src/utilities/focus-trap/create-focus-trap.ts
@@ -36,8 +36,8 @@ export function createFocusTrap(getContainer: Accessor<HTMLElement | null>): Foc
       return;
     }
 
-    const first = focusable[0]!;
-    const last = focusable[focusable.length - 1]!;
+    const first = focusable[0] as HTMLElement;
+    const last = focusable[focusable.length - 1] as HTMLElement;
 
     if (e.shiftKey) {
       if (document.activeElement === first) {
diff --git a/packages/core/src/utilities/portal/portal.tsx b/packages/core/src/utilities/portal/portal.tsx
index c5ce33e..b4dddcc 100644
--- a/packages/core/src/utilities/portal/portal.tsx
+++ b/packages/core/src/utilities/portal/portal.tsx
@@ -17,9 +17,5 @@ export function Portal(props: PortalProps): JSX.Element {
     return <>{props.children}</>;
   }
 
-  return (
-    <SolidPortal mount={props.target ?? document.body}>
-      {props.children}
-    </SolidPortal>
-  );
+  return <SolidPortal mount={props.target ?? document.body}>{props.children}</SolidPortal>;
 }
diff --git a/packages/core/src/utilities/presence/presence.tsx b/packages/core/src/utilities/presence/presence.tsx
index 1d008f4..9e3af6d 100644
--- a/packages/core/src/utilities/presence/presence.tsx
+++ b/packages/core/src/utilities/presence/presence.tsx
@@ -75,12 +75,12 @@ export function Presence(props: PresenceProps): JSX.Element {
   // Wrap in a function so Show evaluates children lazily (only when mounted).
   return (
     <Show when={shouldMount()}>
-      {(
-        () =>
+      {
+        (() =>
           typeof props.children === "function"
             ? (props.children as (p: PresenceChildProps) => JSX.Element)(childProps)
-            : props.children
-      ) as unknown as JSX.Element}
+            : props.children) as unknown as JSX.Element
+      }
     </Show>
   );
 }
diff --git a/packages/core/tests/utilities/focus-trap.test.ts b/packages/core/tests/utilities/focus-trap.test.ts
index 81dfb2f..2907ca0 100644
--- a/packages/core/tests/utilities/focus-trap.test.ts
+++ b/packages/core/tests/utilities/focus-trap.test.ts
@@ -96,7 +96,12 @@ describe("createFocusTrap", () => {
       const trap = createFocusTrap(() => container);
       trap.activate();
       // button1 is already focused after activate
-      const event = new KeyboardEvent("keydown", { key: "Tab", shiftKey: true, bubbles: true, cancelable: true });
+      const event = new KeyboardEvent("keydown", {
+        key: "Tab",
+        shiftKey: true,
+        bubbles: true,
+        cancelable: true,
+      });
       document.dispatchEvent(event);
       expect(document.activeElement).toBe(button2);
       trap.deactivate();
@@ -138,7 +143,9 @@ describe("createFocusTrap", () => {
       // Tab from the only element — Tab wraps back to itself (first === last)
       // What matters is it doesn't fire twice causing erratic behaviour
       expect(() => {
-        document.dispatchEvent(new KeyboardEvent("keydown", { key: "Tab", bubbles: true, cancelable: true }));
+        document.dispatchEvent(
+          new KeyboardEvent("keydown", { key: "Tab", bubbles: true, cancelable: true }),
+        );
       }).not.toThrow();
       trap.deactivate();
       dispose();
diff --git a/packages/core/tests/utilities/portal.test.tsx b/packages/core/tests/utilities/portal.test.tsx
index 3f6dc7a..8141dd0 100644
--- a/packages/core/tests/utilities/portal.test.tsx
+++ b/packages/core/tests/utilities/portal.test.tsx
@@ -4,7 +4,11 @@ import { Portal } from "../../src/utilities/portal/portal";
 
 describe("Portal", () => {
   it("renders children into document.body by default", () => {
-    render(() => <Portal><div data-testid="portal-content">hello</div></Portal>);
+    render(() => (
+      <Portal>
+        <div data-testid="portal-content">hello</div>
+      </Portal>
+    ));
     // Content should be in document.body, not the render container
     expect(document.body.querySelector("[data-testid='portal-content']")).toBeTruthy();
   });