diff --git a/app/soapbox/actions/__tests__/alerts.test.ts b/app/soapbox/actions/__tests__/alerts.test.ts
new file mode 100644
index 000000000..f2419893a
--- /dev/null
+++ b/app/soapbox/actions/__tests__/alerts.test.ts
@@ -0,0 +1,149 @@
+import { AxiosError } from 'axios';
+
+import { mockStore } from 'soapbox/jest/test-helpers';
+import rootReducer from 'soapbox/reducers';
+
+import { dismissAlert, showAlert, showAlertForError } from '../alerts';
+
+const buildError = (message: string, status: number) => new AxiosError<any>(message, String(status), null, null, {
+  data: {
+    error: message,
+  },
+  statusText: String(status),
+  status,
+  headers: {},
+  config: {},
+});
+
+let store;
+
+beforeEach(() => {
+  const state = rootReducer(undefined, {});
+  store = mockStore(state);
+});
+
+describe('dismissAlert()', () => {
+  it('dispatches the proper actions', async() => {
+    const alert = 'hello world';
+    const expectedActions = [
+      { type: 'ALERT_DISMISS', alert },
+    ];
+    await store.dispatch(dismissAlert(alert));
+    const actions = store.getActions();
+
+    expect(actions).toEqual(expectedActions);
+  });
+});
+
+describe('showAlert()', () => {
+  it('dispatches the proper actions', async() => {
+    const title = 'title';
+    const message = 'msg';
+    const severity = 'info';
+    const expectedActions = [
+      { type: 'ALERT_SHOW', title, message, severity },
+    ];
+    await store.dispatch(showAlert(title, message, severity));
+    const actions = store.getActions();
+
+    expect(actions).toEqual(expectedActions);
+  });
+});
+
+describe('showAlert()', () => {
+  describe('with a 502 status code', () => {
+    it('dispatches the proper actions', async() => {
+      const message = 'The server is down';
+      const error = buildError(message, 502);
+
+      const expectedActions = [
+        { type: 'ALERT_SHOW', title: '', message, severity: 'error' },
+      ];
+      await store.dispatch(showAlertForError(error));
+      const actions = store.getActions();
+
+      expect(actions).toEqual(expectedActions);
+    });
+  });
+
+  describe('with a 404 status code', () => {
+    it('dispatches the proper actions', async() => {
+      const error = buildError('', 404);
+
+      const expectedActions = [];
+      await store.dispatch(showAlertForError(error));
+      const actions = store.getActions();
+
+      expect(actions).toEqual(expectedActions);
+    });
+  });
+
+  describe('with a 410 status code', () => {
+    it('dispatches the proper actions', async() => {
+      const error = buildError('', 410);
+
+      const expectedActions = [];
+      await store.dispatch(showAlertForError(error));
+      const actions = store.getActions();
+
+      expect(actions).toEqual(expectedActions);
+    });
+  });
+
+  describe('with an accepted status code', () => {
+    describe('with a message from the server', () => {
+      it('dispatches the proper actions', async() => {
+        const message = 'custom message';
+        const error = buildError(message, 200);
+
+        const expectedActions = [
+          { type: 'ALERT_SHOW', title: '', message, severity: 'error' },
+        ];
+        await store.dispatch(showAlertForError(error));
+        const actions = store.getActions();
+
+        expect(actions).toEqual(expectedActions);
+      });
+    });
+
+    describe('without a message from the server', () => {
+      it('dispatches the proper actions', async() => {
+        const message = 'The request has been accepted for processing';
+        const error = buildError(message, 202);
+
+        const expectedActions = [
+          { type: 'ALERT_SHOW', title: '', message, severity: 'error' },
+        ];
+        await store.dispatch(showAlertForError(error));
+        const actions = store.getActions();
+
+        expect(actions).toEqual(expectedActions);
+      });
+    });
+  });
+
+  describe('without a response', () => {
+    it('dispatches the proper actions', async() => {
+      const error = new AxiosError();
+
+      const expectedActions = [
+        {
+          type: 'ALERT_SHOW',
+          title: {
+            defaultMessage: 'Oops!',
+            id: 'alert.unexpected.title',
+          },
+          message: {
+            defaultMessage: 'An unexpected error occurred.',
+            id: 'alert.unexpected.message',
+          },
+          severity: 'error',
+        },
+      ];
+      await store.dispatch(showAlertForError(error));
+      const actions = store.getActions();
+
+      expect(actions).toEqual(expectedActions);
+    });
+  });
+});
diff --git a/app/soapbox/actions/alerts.js b/app/soapbox/actions/alerts.js
deleted file mode 100644
index c71ce3e87..000000000
--- a/app/soapbox/actions/alerts.js
+++ /dev/null
@@ -1,68 +0,0 @@
-import { defineMessages } from 'react-intl';
-
-import { httpErrorMessages } from 'soapbox/utils/errors';
-
-const messages = defineMessages({
-  unexpectedTitle: { id: 'alert.unexpected.title', defaultMessage: 'Oops!' },
-  unexpectedMessage: { id: 'alert.unexpected.message', defaultMessage: 'An unexpected error occurred.' },
-});
-
-export const ALERT_SHOW    = 'ALERT_SHOW';
-export const ALERT_DISMISS = 'ALERT_DISMISS';
-export const ALERT_CLEAR   = 'ALERT_CLEAR';
-
-const noOp = () => {};
-
-export function dismissAlert(alert) {
-  return {
-    type: ALERT_DISMISS,
-    alert,
-  };
-}
-
-export function clearAlert() {
-  return {
-    type: ALERT_CLEAR,
-  };
-}
-
-export function showAlert(title = messages.unexpectedTitle, message = messages.unexpectedMessage, severity = 'info') {
-  return {
-    type: ALERT_SHOW,
-    title,
-    message,
-    severity,
-  };
-}
-
-export function showAlertForError(error) {
-  return (dispatch, _getState) => {
-    if (error.response) {
-      const { data, status, statusText } = error.response;
-
-      if (status === 502) {
-        return dispatch(showAlert('', 'The server is down', 'error'));
-      }
-
-      if (status === 404 || status === 410) {
-        // Skip these errors as they are reflected in the UI
-        return dispatch(noOp);
-      }
-
-      let message = statusText;
-
-      if (data.error) {
-        message = data.error;
-      }
-
-      if (!message) {
-        message = httpErrorMessages.find((httpError) => httpError.code === status)?.description;
-      }
-
-      return dispatch(showAlert('', message, 'error'));
-    } else {
-      console.error(error);
-      return dispatch(showAlert(undefined, undefined, 'error'));
-    }
-  };
-}
diff --git a/app/soapbox/actions/alerts.ts b/app/soapbox/actions/alerts.ts
new file mode 100644
index 000000000..b0af2af35
--- /dev/null
+++ b/app/soapbox/actions/alerts.ts
@@ -0,0 +1,74 @@
+import { AnyAction } from '@reduxjs/toolkit';
+import { AxiosError } from 'axios';
+import { defineMessages, MessageDescriptor } from 'react-intl';
+
+import { httpErrorMessages } from 'soapbox/utils/errors';
+
+import { SnackbarActionSeverity } from './snackbar';
+
+const messages = defineMessages({
+  unexpectedTitle: { id: 'alert.unexpected.title', defaultMessage: 'Oops!' },
+  unexpectedMessage: { id: 'alert.unexpected.message', defaultMessage: 'An unexpected error occurred.' },
+});
+
+export const ALERT_SHOW = 'ALERT_SHOW';
+export const ALERT_DISMISS = 'ALERT_DISMISS';
+export const ALERT_CLEAR = 'ALERT_CLEAR';
+
+const noOp = () => { };
+
+function dismissAlert(alert: any) {
+  return {
+    type: ALERT_DISMISS,
+    alert,
+  };
+}
+
+function showAlert(
+  title: MessageDescriptor | string = messages.unexpectedTitle,
+  message: MessageDescriptor | string = messages.unexpectedMessage,
+  severity: SnackbarActionSeverity = 'info',
+) {
+  return {
+    type: ALERT_SHOW,
+    title,
+    message,
+    severity,
+  };
+}
+
+const showAlertForError = (error: AxiosError<any>) => (dispatch: React.Dispatch<AnyAction>, _getState: any) => {
+  if (error.response) {
+    const { data, status, statusText } = error.response;
+
+    if (status === 502) {
+      return dispatch(showAlert('', 'The server is down', 'error'));
+    }
+
+    if (status === 404 || status === 410) {
+      // Skip these errors as they are reflected in the UI
+      return dispatch(noOp as any);
+    }
+
+    let message: string | undefined = statusText;
+
+    if (data.error) {
+      message = data.error;
+    }
+
+    if (!message) {
+      message = httpErrorMessages.find((httpError) => httpError.code === status)?.description;
+    }
+
+    return dispatch(showAlert('', message, 'error'));
+  } else {
+    console.error(error);
+    return dispatch(showAlert(undefined, undefined, 'error'));
+  }
+};
+
+export {
+  dismissAlert,
+  showAlert,
+  showAlertForError,
+};
diff --git a/app/soapbox/actions/snackbar.ts b/app/soapbox/actions/snackbar.ts
index d1cda0d94..d4238cf33 100644
--- a/app/soapbox/actions/snackbar.ts
+++ b/app/soapbox/actions/snackbar.ts
@@ -2,7 +2,7 @@ import { ALERT_SHOW } from './alerts';
 
 import type { MessageDescriptor } from 'react-intl';
 
-type SnackbarActionSeverity = 'info' | 'success' | 'error'
+export type SnackbarActionSeverity = 'info' | 'success' | 'error'
 
 type SnackbarMessage = string | MessageDescriptor