diff --git a/src/components/ErrorBoundary/ErrorBoundary.tsx b/src/components/ErrorBoundary/ErrorBoundary.tsx
index ea10dfda..97689461 100644
--- a/src/components/ErrorBoundary/ErrorBoundary.tsx
+++ b/src/components/ErrorBoundary/ErrorBoundary.tsx
@@ -1,51 +1,91 @@
-import React from "react";
 import * as Sentry from "@sentry/react";
-import { logger } from "@utils/logger";
+import { logger } from "@/utils/logger";
+import { getTypeSafeError } from "@/utils/typeSafety/getTypeSafeError";
+import { DefaultErrorFallback } from "./DefaultErrorFallback";
 
 /**
- * A reusable error-boundary with `Sentry` and logging integrations.
- *
- * **NOTE:** ErrorBoundary WON'T catch the following:
- * - Event-driven errors
- * - Uncaught promise rejections
+ * Default `onError` handler fn for {@link ErrorBoundary}
  */
-export class ErrorBoundary extends React.Component<ErrorBoundaryProps, ErrorBoundaryState> {
-  public override state: ErrorBoundaryState = {
-    error: null,
-    hasError: false,
-  };
-
-  public static getDerivedStateFromError(error: Error) {
-    logger.error(error, "ErrorBoundary.getDerivedStateFromError");
-    return { hasError: true };
-  }
-
-  public override componentDidCatch(error: Error, errorInfo: React.ErrorInfo) {
-    logger.error(
-      `${error}
-      ${errorInfo}`,
-      `ErrorBoundary${this.props?.identifier ? `:${this.props.identifier}` : null}`
-    );
-  }
+const defaultErrorBoundaryOnErrorHandler: ErrorBoundaryOnErrorHandler = (
+  error: Error,
+  _componentStack: string,
+  _eventId: string
+) => {
+  logger.error(error, "Sentry.ErrorBoundary");
+};
 
-  public override render() {
-    const { showDialog = true, ...props } = this.props;
+/**
+ * Default `fallback` render fn for {@link ErrorBoundary}
+ */
+const defaultErrorBoundaryFallback: ErrorBoundaryFallbackFn = ({ error }) => (
+  <DefaultErrorFallback errorMessage={getTypeSafeError(error).message} />
+);
 
-    return (
-      <Sentry.ErrorBoundary showDialog={showDialog} {...props}>
-        {this.props.children}
-      </Sentry.ErrorBoundary>
-    );
-  }
+/**
+ ;* A reusable [`Sentry ErrorBoundary`][sentry-eb-docs] component.
+ *
+ * > **NOTE:** ErrorBoundary components DO NOT catch the following:
+ * >   - Event-driven errors
+ * >   - Uncaught promise rejections
+ *
+ * #### [Sentry.ErrorBoundary Options][sentry-eb-opts]:
+ *
+ * - `showDialog` - If a [Sentry User Feedback Widget][sentry-feedback-widget] should be rendered
+ *   when the ErrorBoundary catches an error.
+ *
+ *   - _**Default:**_ `true`
+ *
+ * - `dialogOptions` - Options that are passed into the Sentry User Feedback Widget. See all
+ *   possible customization options [here][sentry-feedback-widget-opts].
+ *
+ * - `fallback` - JSX to render when the ErrorBoundary catches an error. Can be JSX or a fn that
+ *   returns JSX. If you provide a fn, Sentry will call it with additional info and helpers.
+ *
+ *   - _**Default:**_ {@link DefaultErrorFallback|`DefaultErrorFallback`}
+ *
+ * - `onError` - A fn that gets called when the ErrorBoundary encounters an error. `onError` is
+ *   useful if you want to propagate the error into a state management library like Redux, or if
+ *   you want to check any side effects that could have occurred due to the error.
+ *
+ *   - _**Default:**_ {@link logger.error|`logger.error`}
+ *
+ * - `onMount` - A fn that gets called in `componentDidMount()`.
+ *
+ * - `onUnmount` - A fn that gets called in `componentWillUnmount()`.
+ *
+ * - `beforeCapture` - A fn that gets called before an error is sent to Sentry, allowing for extra
+ *   tags or context to be added to the error.
+ *
+ * Click [here to view source code][sentry-eb-src] for `Sentry.ErrorBoundary`.
+ *
+ * @docs
+ * - [React docs: Error Boundaries][react-eb-docs]
+ * - [Sentry.ErrorBoundary][sentry-eb-docs]
+ * - [Sentry.ErrorBoundary Options][sentry-eb-opts]
+ *
+ * [react-eb-docs]: https://react.dev/reference/react/Component#catching-rendering-errors-with-an-error-boundary
+ * [sentry-eb-src]: https://github.com/getsentry/sentry-javascript/blob/develop/packages/react/src/errorboundary.tsx
+ * [sentry-eb-docs]: https://docs.sentry.io/platforms/javascript/guides/react/features/error-boundary/
+ * [sentry-eb-opts]: https://docs.sentry.io/platforms/javascript/guides/react/features/error-boundary/#options
+ * [sentry-feedback-widget]: https://docs.sentry.io/platforms/javascript/guides/react/enriching-events/user-feedback/
+ * [sentry-feedback-widget-opts]: https://docs.sentry.io/platforms/javascript/guides/react/enriching-events/user-feedback/#customizing-the-widget
+ */
+export class ErrorBoundary extends Sentry.ErrorBoundary {
+  public static readonly defaultProps = {
+    showDialog: true,
+    onError: defaultErrorBoundaryOnErrorHandler,
+    fallback: defaultErrorBoundaryFallback,
+  } satisfies Partial<Sentry.ErrorBoundaryProps>;
 }
 
-export type ErrorBoundaryProps = React.ComponentProps<typeof Sentry.ErrorBoundary> & {
-  showDialog?: boolean;
-  identifier?: string;
-  children?: React.ReactNode;
-};
+/**
+ * `onError` handler fn for {@link ErrorBoundary}
+ * @note Available `onError` fn args: `error`, `componentStack`, `eventId`
+ */
+export type ErrorBoundaryOnErrorHandler = NonNullable<Sentry.ErrorBoundaryProps["onError"]>;
 
-interface ErrorBoundaryState {
-  error: Error | string | null;
-  hasError: boolean;
-}
+/**
+ * `fallback` render fn for {@link ErrorBoundary}
+ * @note Available `fallback` fn args: { `error`, `componentStack`, `eventId`, `resetError` }
+ */
+export type ErrorBoundaryFallbackFn = NonNullable<Sentry.ErrorBoundaryProps["fallback"]>;
diff --git a/src/components/ErrorBoundary/classNames.ts b/src/components/ErrorBoundary/classNames.ts
new file mode 100644
index 00000000..34f1ca2a
--- /dev/null
+++ b/src/components/ErrorBoundary/classNames.ts
@@ -0,0 +1,6 @@
+/**
+ * Class names for `ErrorBoundary` components (src/components/ErrorBoundary/).
+ */
+export const errorBoundaryClassNames = {
+  defaultErrorFallbackRoot: "error-boundary__default-error-fallback-root",
+} as const;