diff --git a/.eslintrc.js b/.eslintrc.js
index bfb17bd1f..1e4509d9b 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -36,6 +36,9 @@ const rules = {
   // useful for unused or internal fields
   'no-underscore-dangle': 'off',
 
+  // Temp: We have because TypeScript's `allowUnreachableCode` option is on.
+  'no-unreachable': 'error',
+
   // though we have a logger, we still remap console to log to disk
   'no-console': 'error',
 
diff --git a/ts/ConversationController.ts b/ts/ConversationController.ts
index 17cadc722..a33f2fcc2 100644
--- a/ts/ConversationController.ts
+++ b/ts/ConversationController.ts
@@ -18,7 +18,7 @@ import * as log from './logging/log';
 import * as Errors from './types/errors';
 import { getContactId } from './messages/helpers';
 import { maybeDeriveGroupV2Id } from './groups';
-import { assert, strictAssert } from './util/assert';
+import { assertDev, strictAssert } from './util/assert';
 import { isGroupV1, isGroupV2 } from './util/whatTypeOfConversation';
 import { getConversationUnreadCountForAppBadge } from './util/getConversationUnreadCountForAppBadge';
 import { UUID, isValidUuid, UUIDKind } from './types/UUID';
@@ -686,7 +686,7 @@ export class ConversationController {
     //   conflict case, to keep the one with activity the most recently.
     for (let i = models.length - 1; i >= 0; i -= 1) {
       const conversation = models[i];
-      assert(
+      assertDev(
         conversation,
         'Expected conversation to be found in array during iteration'
       );
@@ -781,7 +781,7 @@ export class ConversationController {
       if (isGroupV1(conversation.attributes)) {
         maybeDeriveGroupV2Id(conversation);
         groupV2Id = conversation.get('derivedGroupV2Id');
-        assert(
+        assertDev(
           groupV2Id,
           'checkForConflicts: expected the group V2 ID to have been derived, but it was falsy'
         );
@@ -842,7 +842,7 @@ export class ConversationController {
     }
 
     if (obsolete.get('type') !== conversationType) {
-      assert(
+      assertDev(
         false,
         `${logId}: cannot combine a private and group conversation. Doing nothing`
       );
diff --git a/ts/SignalProtocolStore.ts b/ts/SignalProtocolStore.ts
index 7d3f777ef..55c0a6849 100644
--- a/ts/SignalProtocolStore.ts
+++ b/ts/SignalProtocolStore.ts
@@ -18,7 +18,7 @@ import {
 
 import * as Bytes from './Bytes';
 import { constantTimeEqual, sha256 } from './Crypto';
-import { assert, strictAssert } from './util/assert';
+import { assertDev, strictAssert } from './util/assert';
 import { isNotNil } from './util/isNotNil';
 import { Zone } from './util/Zone';
 import { isMoreRecentThan } from './util/timestamp';
@@ -836,13 +836,16 @@ export class SignalProtocolStore extends EventsMixin {
     // Apply changes to in-memory storage after successful DB write.
 
     const { sessions } = this;
-    assert(sessions !== undefined, "Can't commit unhydrated session storage");
+    assertDev(
+      sessions !== undefined,
+      "Can't commit unhydrated session storage"
+    );
     pendingSessions.forEach((value, key) => {
       sessions.set(key, value);
     });
 
     const { senderKeys } = this;
-    assert(
+    assertDev(
       senderKeys !== undefined,
       "Can't commit unhydrated sender key storage"
     );
@@ -871,7 +874,7 @@ export class SignalProtocolStore extends EventsMixin {
   private enterZone(zone: Zone, name: string): void {
     this.currentZoneDepth += 1;
     if (this.currentZoneDepth === 1) {
-      assert(this.currentZone === undefined, 'Should not be in the zone');
+      assertDev(this.currentZone === undefined, 'Should not be in the zone');
       this.currentZone = zone;
 
       if (zone !== GLOBAL_ZONE) {
@@ -881,10 +884,13 @@ export class SignalProtocolStore extends EventsMixin {
   }
 
   private leaveZone(zone: Zone): void {
-    assert(this.currentZone === zone, 'Should be in the correct zone');
+    assertDev(this.currentZone === zone, 'Should be in the correct zone');
 
     this.currentZoneDepth -= 1;
-    assert(this.currentZoneDepth >= 0, 'Unmatched number of leaveZone calls');
+    assertDev(
+      this.currentZoneDepth >= 0,
+      'Unmatched number of leaveZone calls'
+    );
 
     // Since we allow re-entering zones we might actually be in two overlapping
     // async calls. Leave the zone and yield to another one only if there are
@@ -908,7 +914,7 @@ export class SignalProtocolStore extends EventsMixin {
 
     while (this.zoneQueue[0]?.zone === next.zone) {
       const elem = this.zoneQueue.shift();
-      assert(elem, 'Zone element should be present');
+      assertDev(elem, 'Zone element should be present');
 
       toEnter.push(elem);
     }
@@ -1080,7 +1086,7 @@ export class SignalProtocolStore extends EventsMixin {
           item: record,
         };
 
-        assert(this.currentZone, 'Must run in the zone');
+        assertDev(this.currentZone, 'Must run in the zone');
 
         this.pendingSessions.set(id, newSession);
 
@@ -1388,7 +1394,7 @@ export class SignalProtocolStore extends EventsMixin {
       const conversation = window.ConversationController.lookupOrCreate({
         uuid: uuid.toString(),
       });
-      assert(conversation, `lightSessionReset/${id}: missing conversation`);
+      assertDev(conversation, `lightSessionReset/${id}: missing conversation`);
 
       log.warn(`lightSessionReset/${id}: Resetting session`);
 
diff --git a/ts/background.ts b/ts/background.ts
index 0abc9ea34..fdbe76eb2 100644
--- a/ts/background.ts
+++ b/ts/background.ts
@@ -35,7 +35,7 @@ import { ChallengeHandler } from './challenge';
 import * as durations from './util/durations';
 import { explodePromise } from './util/explodePromise';
 import { isWindowDragElement } from './util/isWindowDragElement';
-import { assert, strictAssert } from './util/assert';
+import { assertDev, strictAssert } from './util/assert';
 import { normalizeUuid } from './util/normalizeUuid';
 import { filter } from './util/iterables';
 import { isNotNil } from './util/isNotNil';
@@ -3359,7 +3359,7 @@ export async function startApp(): Promise<void> {
     data: MessageEventData,
     descriptor: MessageDescriptor
   ) {
-    assert(
+    assertDev(
       Boolean(data.receivedAtCounter),
       `Did not receive receivedAtCounter for message: ${data.timestamp}`
     );
diff --git a/ts/challenge.ts b/ts/challenge.ts
index fb702ff8f..9d1fe2cdf 100644
--- a/ts/challenge.ts
+++ b/ts/challenge.ts
@@ -12,7 +12,7 @@
 // are not immediately retried, however, until `.onOnline()` is called from
 // when we are actually online.
 
-import { assert } from './util/assert';
+import { assertDev } from './util/assert';
 import { isOlderThan } from './util/timestamp';
 import { parseRetryAfterWithDefault } from './util/parseRetryAfter';
 import { clearTimeoutIfNecessary } from './util/clearTimeoutIfNecessary';
@@ -311,7 +311,7 @@ export class ChallengeHandler {
   }
 
   private async persist(): Promise<void> {
-    assert(
+    assertDev(
       this.isLoaded,
       'ChallengeHandler has to be loaded before persisting new data'
     );
diff --git a/ts/components/Avatar.tsx b/ts/components/Avatar.tsx
index 980a8e04f..d04e0b9c9 100644
--- a/ts/components/Avatar.tsx
+++ b/ts/components/Avatar.tsx
@@ -20,7 +20,7 @@ import { BadgeImageTheme } from '../badges/BadgeImageTheme';
 import { HasStories } from '../types/Stories';
 import { Spinner } from './Spinner';
 import { ThemeType } from '../types/Util';
-import { assert } from '../util/assert';
+import { assertDev } from '../util/assert';
 import { getBadgeImageFileLocalPath } from '../badges/getBadgeImageFileLocalPath';
 import { getInitials } from '../util/getInitials';
 import { isBadgeVisible } from '../badges/isBadgeVisible';
@@ -169,9 +169,9 @@ export const Avatar: FunctionComponent<Props> = ({
       </div>
     );
   } else if (hasImage) {
-    assert(avatarPath, 'avatarPath should be defined here');
+    assertDev(avatarPath, 'avatarPath should be defined here');
 
-    assert(
+    assertDev(
       blur !== AvatarBlur.BlurPictureWithClickToView || size >= 100,
       'Rendering "click to view" for a small avatar. This may not render correctly'
     );
diff --git a/ts/components/Button.tsx b/ts/components/Button.tsx
index 36fd5e799..93d3aa188 100644
--- a/ts/components/Button.tsx
+++ b/ts/components/Button.tsx
@@ -11,7 +11,7 @@ import React from 'react';
 import classNames from 'classnames';
 
 import type { Theme } from '../util/theme';
-import { assert } from '../util/assert';
+import { assertDev } from '../util/assert';
 import { themeClassName } from '../util/theme';
 
 export enum ButtonSize {
@@ -126,10 +126,10 @@ export const Button = React.forwardRef<HTMLButtonElement, PropsType>(
     }
 
     const sizeClassName = SIZE_CLASS_NAMES.get(size);
-    assert(sizeClassName, '<Button> size not found');
+    assertDev(sizeClassName, '<Button> size not found');
 
     const variantClassName = VARIANT_CLASS_NAMES.get(variant);
-    assert(variantClassName, '<Button> variant not found');
+    assertDev(variantClassName, '<Button> variant not found');
 
     const buttonElement = (
       <button
diff --git a/ts/components/ConversationList.tsx b/ts/components/ConversationList.tsx
index 3661b5a42..3a5ffb2b6 100644
--- a/ts/components/ConversationList.tsx
+++ b/ts/components/ConversationList.tsx
@@ -9,7 +9,7 @@ import classNames from 'classnames';
 import { get, pick } from 'lodash';
 
 import { missingCaseError } from '../util/missingCaseError';
-import { assert } from '../util/assert';
+import { assertDev } from '../util/assert';
 import type { ParsedE164Type } from '../util/libphonenumberInstance';
 import type { LocalizerType, ThemeType } from '../types/Util';
 import { ScrollBehavior } from '../types/Util';
@@ -205,7 +205,7 @@ export const ConversationList: React.FC<PropsType> = ({
     ({ index }: { index: number }): number => {
       const row = getRow(index);
       if (!row) {
-        assert(false, `Expected a row at index ${index}`);
+        assertDev(false, `Expected a row at index ${index}`);
         return NORMAL_ROW_HEIGHT;
       }
       switch (row.type) {
@@ -223,7 +223,7 @@ export const ConversationList: React.FC<PropsType> = ({
     ({ key, index, style }) => {
       const row = getRow(index);
       if (!row) {
-        assert(false, `Expected a row at index ${index}`);
+        assertDev(false, `Expected a row at index ${index}`);
         return <div key={key} style={style} />;
       }
 
diff --git a/ts/components/IncomingCallBar.tsx b/ts/components/IncomingCallBar.tsx
index ec20b9e81..75c2377be 100644
--- a/ts/components/IncomingCallBar.tsx
+++ b/ts/components/IncomingCallBar.tsx
@@ -129,7 +129,6 @@ const GroupCallMessage = ({
           }}
         />
       );
-      break;
     case 3:
       return (
         <Intl
@@ -142,7 +141,6 @@ const GroupCallMessage = ({
           }}
         />
       );
-      break;
     default:
       return (
         <Intl
diff --git a/ts/components/conversation/ContactSpoofingReviewDialog.tsx b/ts/components/conversation/ContactSpoofingReviewDialog.tsx
index aa2d8378e..6032cfd99 100644
--- a/ts/components/conversation/ContactSpoofingReviewDialog.tsx
+++ b/ts/components/conversation/ContactSpoofingReviewDialog.tsx
@@ -20,7 +20,7 @@ import { ContactSpoofingReviewDialogPerson } from './ContactSpoofingReviewDialog
 import { Button, ButtonVariant } from '../Button';
 import { Intl } from '../Intl';
 import { Emojify } from './Emojify';
-import { assert } from '../../util/assert';
+import { assertDev } from '../../util/assert';
 import { missingCaseError } from '../../util/missingCaseError';
 import { isInSystemContacts } from '../../util/isInSystemContacts';
 
@@ -133,7 +133,7 @@ export const ContactSpoofingReviewDialog: FunctionComponent<
                   });
                   break;
                 case MessageRequestState.unblocking:
-                  assert(
+                  assertDev(
                     false,
                     'Got unexpected MessageRequestState.unblocking state. Clearing confiration state'
                   );
@@ -175,11 +175,11 @@ export const ContactSpoofingReviewDialog: FunctionComponent<
   switch (props.type) {
     case ContactSpoofingType.DirectConversationWithSameTitle: {
       const { possiblyUnsafeConversation, safeConversation } = props;
-      assert(
+      assertDev(
         possiblyUnsafeConversation.type === 'direct',
         '<ContactSpoofingReviewDialog> expected a direct conversation for the "possibly unsafe" conversation'
       );
-      assert(
+      assertDev(
         safeConversation.type === 'direct',
         '<ContactSpoofingReviewDialog> expected a direct conversation for the "safe" conversation'
       );
diff --git a/ts/components/conversation/ContactSpoofingReviewDialogPerson.tsx b/ts/components/conversation/ContactSpoofingReviewDialogPerson.tsx
index 435ab6989..5f1f85c9a 100644
--- a/ts/components/conversation/ContactSpoofingReviewDialogPerson.tsx
+++ b/ts/components/conversation/ContactSpoofingReviewDialogPerson.tsx
@@ -7,7 +7,7 @@ import React from 'react';
 import type { ConversationType } from '../../state/ducks/conversations';
 import type { LocalizerType, ThemeType } from '../../types/Util';
 import type { PreferredBadgeSelectorType } from '../../state/selectors/badges';
-import { assert } from '../../util/assert';
+import { assertDev } from '../../util/assert';
 
 import { Avatar, AvatarSize } from '../Avatar';
 import { ContactName } from './ContactName';
@@ -25,7 +25,7 @@ type PropsType = {
 export const ContactSpoofingReviewDialogPerson: FunctionComponent<
   PropsType
 > = ({ children, conversation, getPreferredBadge, i18n, onClick, theme }) => {
-  assert(
+  assertDev(
     conversation.type === 'direct',
     '<ContactSpoofingReviewDialogPerson> expected a direct conversation'
   );
diff --git a/ts/components/conversation/MessageAudio.tsx b/ts/components/conversation/MessageAudio.tsx
index 39f8fa277..ae3d6a2a7 100644
--- a/ts/components/conversation/MessageAudio.tsx
+++ b/ts/components/conversation/MessageAudio.tsx
@@ -11,7 +11,7 @@ import React, {
 import classNames from 'classnames';
 import { noop } from 'lodash';
 
-import { assert } from '../../util/assert';
+import { assertDev } from '../../util/assert';
 import type { LocalizerType } from '../../types/Util';
 import type { AttachmentType } from '../../types/Attachment';
 import { isDownloaded } from '../../types/Attachment';
@@ -226,7 +226,7 @@ export const MessageAudio: React.FC<Props> = (props: Props) => {
     setActiveAudioID,
   } = props;
 
-  assert(audio != null, 'GlobalAudioContext always provides audio');
+  assertDev(audio != null, 'GlobalAudioContext always provides audio');
 
   const isActive =
     activeAudioID === id && activeAudioContext === renderingContext;
@@ -365,7 +365,7 @@ export const MessageAudio: React.FC<Props> = (props: Props) => {
     };
 
     const onLoadedMetadata = () => {
-      assert(
+      assertDev(
         !Number.isNaN(audio.duration),
         'Audio should have definite duration on `loadedmetadata` event'
       );
diff --git a/ts/components/conversation/Timeline.tsx b/ts/components/conversation/Timeline.tsx
index 308fa09b0..03c2ceb97 100644
--- a/ts/components/conversation/Timeline.tsx
+++ b/ts/components/conversation/Timeline.tsx
@@ -13,7 +13,7 @@ import { ScrollDownButton } from './ScrollDownButton';
 import type { AssertProps, LocalizerType, ThemeType } from '../../types/Util';
 import type { ConversationType } from '../../state/ducks/conversations';
 import type { PreferredBadgeSelectorType } from '../../state/selectors/badges';
-import { assert, strictAssert } from '../../util/assert';
+import { assertDev, strictAssert } from '../../util/assert';
 import { missingCaseError } from '../../util/missingCaseError';
 import { clearTimeoutIfNecessary } from '../../util/clearTimeoutIfNecessary';
 import { WidthBreakpoint } from '../_util';
@@ -522,7 +522,7 @@ export class Timeline extends React.Component<
 
     this.intersectionObserver = new IntersectionObserver(
       (entries, observer) => {
-        assert(
+        assertDev(
           this.intersectionObserver === observer,
           'observer.disconnect() should prevent callbacks from firing'
         );
@@ -630,7 +630,7 @@ export class Timeline extends React.Component<
         return { scrollBottom: 0 };
       case ScrollAnchor.ScrollToIndex:
         if (scrollToIndex === undefined) {
-          assert(
+          assertDev(
             false,
             '<Timeline> got "scroll to index" scroll anchor, but no index'
           );
@@ -674,7 +674,7 @@ export class Timeline extends React.Component<
           lastSeenIndicatorEl.scrollIntoView();
         } else {
           scrollToBottom(containerEl);
-          assert(
+          assertDev(
             false,
             '<Timeline> expected a last seen indicator but it was not found'
           );
@@ -942,7 +942,7 @@ export class Timeline extends React.Component<
       const messageId = items[itemIndex];
 
       if (!messageId) {
-        assert(
+        assertDev(
           false,
           '<Timeline> iterated through items and got an empty message ID'
         );
@@ -1058,7 +1058,7 @@ export class Timeline extends React.Component<
           bounds
           onResize={({ bounds }) => {
             if (!bounds) {
-              assert(false, 'We should be measuring the bounds');
+              assertDev(false, 'We should be measuring the bounds');
               return;
             }
             this.setState({ lastMeasuredWarningHeight: bounds.height });
diff --git a/ts/components/conversation/conversation-details/AddGroupMembersModal/ConfirmAdditionsModal.tsx b/ts/components/conversation/conversation-details/AddGroupMembersModal/ConfirmAdditionsModal.tsx
index ed918125c..70d270de2 100644
--- a/ts/components/conversation/conversation-details/AddGroupMembersModal/ConfirmAdditionsModal.tsx
+++ b/ts/components/conversation/conversation-details/AddGroupMembersModal/ConfirmAdditionsModal.tsx
@@ -5,7 +5,7 @@ import type { FunctionComponent, ReactNode } from 'react';
 import React from 'react';
 
 import type { LocalizerType } from '../../../../types/Util';
-import { assert } from '../../../../util/assert';
+import { assertDev } from '../../../../util/assert';
 import { ModalHost } from '../../../ModalHost';
 import { Button, ButtonVariant } from '../../../Button';
 import { Spinner } from '../../../Spinner';
@@ -35,7 +35,7 @@ export const ConfirmAdditionsModal: FunctionComponent<PropsType> = ({
   selectedContacts,
 }) => {
   const firstContact = selectedContacts[0];
-  assert(
+  assertDev(
     firstContact,
     'Expected at least one conversation to be selected but none were picked'
   );
diff --git a/ts/components/conversation/conversation-details/ConversationDetails.tsx b/ts/components/conversation/conversation-details/ConversationDetails.tsx
index df6a8cb9e..4de5c0c8f 100644
--- a/ts/components/conversation/conversation-details/ConversationDetails.tsx
+++ b/ts/components/conversation/conversation-details/ConversationDetails.tsx
@@ -10,7 +10,7 @@ import type { ConversationType } from '../../../state/ducks/conversations';
 import type { PreferredBadgeSelectorType } from '../../../state/selectors/badges';
 import type { SmartChooseGroupMembersModalPropsType } from '../../../state/smart/ChooseGroupMembersModal';
 import type { SmartConfirmAdditionsModalPropsType } from '../../../state/smart/ConfirmAdditionsModal';
-import { assert } from '../../../util/assert';
+import { assertDev } from '../../../util/assert';
 import { getMutedUntilText } from '../../../util/getMutedUntilText';
 
 import type { LocalizerType, ThemeType } from '../../../types/Util';
@@ -237,7 +237,7 @@ export const ConversationDetails: React.ComponentType<Props> = ({
           renderConfirmAdditionsModal={renderConfirmAdditionsModal}
           clearRequestError={() => {
             setAddGroupMembersRequestState(oldRequestState => {
-              assert(
+              assertDev(
                 oldRequestState !== RequestState.Active,
                 'Should not be clearing an active request state'
               );
diff --git a/ts/components/conversationList/MessageSearchResult.tsx b/ts/components/conversationList/MessageSearchResult.tsx
index f24422075..9a778d93e 100644
--- a/ts/components/conversationList/MessageSearchResult.tsx
+++ b/ts/components/conversationList/MessageSearchResult.tsx
@@ -8,7 +8,7 @@ import { escapeRegExp } from 'lodash';
 import { MessageBodyHighlight } from './MessageBodyHighlight';
 import { ContactName } from '../conversation/ContactName';
 
-import { assert } from '../../util/assert';
+import { assertDev } from '../../util/assert';
 import type {
   BodyRangesType,
   LocalizerType,
@@ -99,7 +99,7 @@ function getFilteredBodyRanges(
   const rx = new RegExp(escapeRegExp(stripped));
   const match = rx.exec(body);
 
-  assert(Boolean(match), `No match found for "${snippet}" inside "${body}"`);
+  assertDev(Boolean(match), `No match found for "${snippet}" inside "${body}"`);
 
   const delta = match ? match.index + snippet.length : 0;
 
@@ -125,7 +125,7 @@ function getFilteredBodyRanges(
         start: bodyRangeMatch.index,
       });
     } else {
-      assert(
+      assertDev(
         false,
         `Body range does not exist? Count: ${i}, Length: ${filteredBodyRanges.length}`
       );
diff --git a/ts/components/leftPane/LeftPaneComposeHelper.tsx b/ts/components/leftPane/LeftPaneComposeHelper.tsx
index 884334027..f27bfb41f 100644
--- a/ts/components/leftPane/LeftPaneComposeHelper.tsx
+++ b/ts/components/leftPane/LeftPaneComposeHelper.tsx
@@ -251,6 +251,7 @@ export class LeftPaneComposeHelper extends LeftPaneHelper<LeftPaneComposePropsTy
           ),
         };
 
+        // eslint-disable-next-line no-unreachable -- Why is this here, its unreachable
         virtualRowIndex -= 1;
       }
     }
@@ -275,6 +276,7 @@ export class LeftPaneComposeHelper extends LeftPaneHelper<LeftPaneComposePropsTy
           ),
         };
 
+        // eslint-disable-next-line no-unreachable -- Why is this here, its unreachable
         virtualRowIndex -= 1;
       }
     }
diff --git a/ts/components/leftPane/LeftPaneSearchHelper.tsx b/ts/components/leftPane/LeftPaneSearchHelper.tsx
index 83fe769f8..7083f95aa 100644
--- a/ts/components/leftPane/LeftPaneSearchHelper.tsx
+++ b/ts/components/leftPane/LeftPaneSearchHelper.tsx
@@ -19,7 +19,7 @@ import { LeftPaneSearchInput } from '../LeftPaneSearchInput';
 
 import { Intl } from '../Intl';
 import { Emojify } from '../conversation/Emojify';
-import { assert } from '../../util/assert';
+import { assertDev } from '../../util/assert';
 
 // The "correct" thing to do is to measure the size of the left pane and render enough
 //   search results for the container height. But (1) that's slow (2) the list is
@@ -228,7 +228,7 @@ export class LeftPaneSearchHelper extends LeftPaneHelper<LeftPaneSearchPropsType
           i18nKey: 'conversationsHeader',
         };
       }
-      assert(
+      assertDev(
         !conversationResults.isLoading,
         "We shouldn't get here with conversation results still loading"
       );
@@ -249,7 +249,7 @@ export class LeftPaneSearchHelper extends LeftPaneHelper<LeftPaneSearchPropsType
           i18nKey: 'contactsHeader',
         };
       }
-      assert(
+      assertDev(
         !contactResults.isLoading,
         "We shouldn't get here with contact results still loading"
       );
@@ -273,7 +273,7 @@ export class LeftPaneSearchHelper extends LeftPaneHelper<LeftPaneSearchPropsType
         i18nKey: 'messagesHeader',
       };
     }
-    assert(
+    assertDev(
       !messageResults.isLoading,
       "We shouldn't get here with message results still loading"
     );
@@ -379,7 +379,7 @@ function getRowCountForLoadedSearchResults(
   //   We could change the parameter of this function, but that adds a bunch of redundant
   //   checks that are, in the author's opinion, less clear.
   if (searchResults.isLoading) {
-    assert(
+    assertDev(
       false,
       'getRowCountForLoadedSearchResults: Expected this to be called with loaded search results. Returning 0'
     );
diff --git a/ts/groups.ts b/ts/groups.ts
index 347ec5de9..8391444bf 100644
--- a/ts/groups.ts
+++ b/ts/groups.ts
@@ -20,7 +20,7 @@ import {
 } from './services/groupCredentialFetcher';
 import dataInterface from './sql/Client';
 import { toWebSafeBase64, fromWebSafeBase64 } from './util/webSafeBase64';
-import { assert, strictAssert } from './util/assert';
+import { assertDev, strictAssert } from './util/assert';
 import { isMoreRecentThan } from './util/timestamp';
 import * as durations from './util/durations';
 import { normalizeUuid } from './util/normalizeUuid';
@@ -671,7 +671,7 @@ export async function buildAddMembersChange(
     conversationIds.map(async conversationId => {
       const contact = window.ConversationController.get(conversationId);
       if (!contact) {
-        assert(
+        assertDev(
           false,
           `buildAddMembersChange/${logId}: missing local contact, skipping`
         );
@@ -680,7 +680,10 @@ export async function buildAddMembersChange(
 
       const uuid = contact.getUuid();
       if (!uuid) {
-        assert(false, `buildAddMembersChange/${logId}: missing UUID; skipping`);
+        assertDev(
+          false,
+          `buildAddMembersChange/${logId}: missing UUID; skipping`
+        );
         return;
       }
 
@@ -1788,7 +1791,7 @@ export async function createGroupV2(
     ...conversationIds.map(async conversationId => {
       const contact = window.ConversationController.get(conversationId);
       if (!contact) {
-        assert(
+        assertDev(
           false,
           `createGroupV2/${logId}: missing local contact, skipping`
         );
@@ -1797,7 +1800,7 @@ export async function createGroupV2(
 
       const contactUuid = contact.get('uuid');
       if (!contactUuid) {
-        assert(false, `createGroupV2/${logId}: missing UUID; skipping`);
+        assertDev(false, `createGroupV2/${logId}: missing UUID; skipping`);
         return;
       }
 
@@ -4143,7 +4146,7 @@ async function integrateGroupChange({
       canApplyChange &&
       (groupChangeMessages.length !== 0 || newMembers.length !== 0)
     ) {
-      assert(
+      assertDev(
         groupChangeMessages.length === 0,
         'Fallback group state processing should not kick in'
       );
diff --git a/ts/hooks/useTabs.tsx b/ts/hooks/useTabs.tsx
index 4fec18ea0..2718ec22f 100644
--- a/ts/hooks/useTabs.tsx
+++ b/ts/hooks/useTabs.tsx
@@ -4,7 +4,7 @@
 import type { KeyboardEvent } from 'react';
 import React, { useState } from 'react';
 import classNames from 'classnames';
-import { assert } from '../util/assert';
+import { assertDev } from '../util/assert';
 import { getClassNamesFor } from '../util/getClassNamesFor';
 
 type Tab = {
@@ -28,7 +28,7 @@ export function useTabs({
   selectedTab: string;
   tabsHeaderElement: JSX.Element;
 } {
-  assert(tabs.length, 'Tabs needs more than 1 tab present');
+  assertDev(tabs.length, 'Tabs needs more than 1 tab present');
 
   const getClassName = getClassNamesFor('Tabs', moduleClassName);
 
diff --git a/ts/jobs/JobQueue.ts b/ts/jobs/JobQueue.ts
index a908077f8..8e05dca5d 100644
--- a/ts/jobs/JobQueue.ts
+++ b/ts/jobs/JobQueue.ts
@@ -8,7 +8,7 @@ import { noop } from 'lodash';
 import { Job } from './Job';
 import { JobError } from './JobError';
 import type { ParsedJob, StoredJob, JobQueueStore } from './types';
-import { assert } from '../util/assert';
+import { assertDev } from '../util/assert';
 import * as log from '../logging/log';
 import { JobLogger } from './JobLogger';
 import * as Errors from '../types/errors';
@@ -67,15 +67,15 @@ export abstract class JobQueue<T> {
   private started = false;
 
   constructor(options: Readonly<JobQueueOptions>) {
-    assert(
+    assertDev(
       Number.isInteger(options.maxAttempts) && options.maxAttempts >= 1,
       'maxAttempts should be a positive integer'
     );
-    assert(
+    assertDev(
       options.maxAttempts <= Number.MAX_SAFE_INTEGER,
       'maxAttempts is too large'
     );
-    assert(
+    assertDev(
       options.queueType.trim().length,
       'queueType should be a non-blank string'
     );
@@ -188,7 +188,7 @@ export abstract class JobQueue<T> {
   }
 
   private async enqueueStoredJob(storedJob: Readonly<StoredJob>) {
-    assert(
+    assertDev(
       storedJob.queueType === this.queueType,
       'Received a mis-matched queue type'
     );
@@ -265,7 +265,7 @@ export abstract class JobQueue<T> {
 
     await this.store.delete(storedJob.id);
 
-    assert(
+    assertDev(
       result,
       'The job never ran. This indicates a developer error in the job queue'
     );
diff --git a/ts/jobs/helpers/addReportSpamJob.ts b/ts/jobs/helpers/addReportSpamJob.ts
index 847f6379c..d3b7ca5c8 100644
--- a/ts/jobs/helpers/addReportSpamJob.ts
+++ b/ts/jobs/helpers/addReportSpamJob.ts
@@ -1,7 +1,7 @@
 // Copyright 2021 Signal Messenger, LLC
 // SPDX-License-Identifier: AGPL-3.0-only
 
-import { assert } from '../../util/assert';
+import { assertDev } from '../../util/assert';
 import * as log from '../../logging/log';
 import type { ConversationType } from '../../state/ducks/conversations';
 import type { reportSpamJobQueue } from '../reportSpamJobQueue';
@@ -17,7 +17,7 @@ export async function addReportSpamJob({
   ) => Promise<Array<string>>;
   jobQueue: Pick<typeof reportSpamJobQueue, 'add'>;
 }>): Promise<void> {
-  assert(
+  assertDev(
     conversation.type === 'direct',
     'addReportSpamJob: cannot report spam for non-direct conversations'
   );
diff --git a/ts/logging/set_up_renderer_logging.ts b/ts/logging/set_up_renderer_logging.ts
index c887d4d45..fc43a0bc9 100644
--- a/ts/logging/set_up_renderer_logging.ts
+++ b/ts/logging/set_up_renderer_logging.ts
@@ -92,7 +92,6 @@ function logAtLevel(level: LogLevel, ...args: ReadonlyArray<unknown>): void {
 
   if (!globalLogger) {
     throw new Error('Logger has not been initialized yet');
-    return;
   }
 
   globalLogger[levelString](msg);
diff --git a/ts/routineProfileRefresh.ts b/ts/routineProfileRefresh.ts
index d1a9ef792..07073b1dd 100644
--- a/ts/routineProfileRefresh.ts
+++ b/ts/routineProfileRefresh.ts
@@ -5,7 +5,7 @@ import { isNil, sortBy } from 'lodash';
 import PQueue from 'p-queue';
 
 import * as log from './logging/log';
-import { assert } from './util/assert';
+import { assertDev } from './util/assert';
 import { sleep } from './util/sleep';
 import { missingCaseError } from './util/missingCaseError';
 import { isNormalNumber } from './util/isNormalNumber';
@@ -177,7 +177,7 @@ function timeUntilNextRefresh(storage: Pick<StorageInterface, 'get'>): number {
     return Math.min(Math.max(0, planned - now), WEEK);
   }
 
-  assert(
+  assertDev(
     false,
     `An invalid value was stored in ${STORAGE_KEY}; treating it as nil`
   );
diff --git a/ts/services/calling.ts b/ts/services/calling.ts
index f782292ef..1b662cedd 100644
--- a/ts/services/calling.ts
+++ b/ts/services/calling.ts
@@ -99,7 +99,7 @@ import {
   FALLBACK_NOTIFICATION_TITLE,
 } from './notifications';
 import * as log from '../logging/log';
-import { assert } from '../util/assert';
+import { assertDev } from '../util/assert';
 
 const {
   processGroupCallRingRequest,
@@ -433,7 +433,7 @@ export class CallingClass {
     switch (callMode) {
       case CallMode.Direct:
         // We could easily support this in the future if we need to.
-        assert(
+        assertDev(
           hasLocalAudio,
           'Expected local audio to be enabled for direct call lobbies'
         );
diff --git a/ts/services/groupCredentialFetcher.ts b/ts/services/groupCredentialFetcher.ts
index 5602681d5..c4e5fe998 100644
--- a/ts/services/groupCredentialFetcher.ts
+++ b/ts/services/groupCredentialFetcher.ts
@@ -86,6 +86,7 @@ export async function runWithRetry(
 
   // It's important to schedule our next run here instead of the level above; otherwise we
   //   could end up with multiple endlessly-retrying runs.
+  // eslint-disable-next-line no-unreachable -- Why is this here, its unreachable
   const duration = options.scheduleAnother;
   if (duration) {
     log.info(
diff --git a/ts/services/ourProfileKey.ts b/ts/services/ourProfileKey.ts
index 3fa732e83..a808ee46a 100644
--- a/ts/services/ourProfileKey.ts
+++ b/ts/services/ourProfileKey.ts
@@ -1,7 +1,7 @@
 // Copyright 2021 Signal Messenger, LLC
 // SPDX-License-Identifier: AGPL-3.0-only
 
-import { assert } from '../util/assert';
+import { assertDev } from '../util/assert';
 import * as log from '../logging/log';
 
 import type { StorageInterface } from '../types/Storage.d';
@@ -40,7 +40,7 @@ export class OurProfileKeyService {
 
   async set(newValue: undefined | Uint8Array): Promise<void> {
     log.info('Our profile key service: updating profile key');
-    assert(this.storage, 'OurProfileKeyService was not initialized');
+    assertDev(this.storage, 'OurProfileKeyService was not initialized');
     if (newValue) {
       await this.storage.put('profileKey', newValue);
     } else {
@@ -62,7 +62,7 @@ export class OurProfileKeyService {
 
     delete this.getPromise;
 
-    assert(this.storage, 'OurProfileKeyService was not initialized');
+    assertDev(this.storage, 'OurProfileKeyService was not initialized');
 
     log.info('Our profile key service: fetching profile key from storage');
     const result = this.storage.get('profileKey');
@@ -70,7 +70,7 @@ export class OurProfileKeyService {
       return result;
     }
 
-    assert(
+    assertDev(
       false,
       'Profile key in storage was defined, but not an Uint8Array. Returning undefined'
     );
diff --git a/ts/services/senderCertificate.ts b/ts/services/senderCertificate.ts
index 446854322..1657b036b 100644
--- a/ts/services/senderCertificate.ts
+++ b/ts/services/senderCertificate.ts
@@ -7,7 +7,7 @@ import {
   serializedCertificateSchema,
 } from '../textsecure/OutgoingMessage';
 import * as Bytes from '../Bytes';
-import { assert } from '../util/assert';
+import { assertDev } from '../util/assert';
 import { missingCaseError } from '../util/missingCaseError';
 import { waitForOnline } from '../util/waitForOnline';
 import * as log from '../logging/log';
@@ -84,7 +84,7 @@ export class SenderCertificateService {
     await Promise.all(this.fetchPromises.values());
 
     const { storage } = this;
-    assert(
+    assertDev(
       storage,
       'Sender certificate service method was called before it was initialized'
     );
@@ -96,7 +96,7 @@ export class SenderCertificateService {
     mode: SenderCertificateMode
   ): undefined | SerializedCertificateType {
     const { storage } = this;
-    assert(
+    assertDev(
       storage,
       'Sender certificate service method was called before it was initialized'
     );
@@ -129,7 +129,7 @@ export class SenderCertificateService {
     let promise: Promise<undefined | SerializedCertificateType>;
     const doFetch = async () => {
       const result = await this.fetchAndSaveCertificate(mode);
-      assert(
+      assertDev(
         this.fetchPromises.get(mode) === promise,
         'Sender certificate service was deleting a different promise than expected'
       );
@@ -138,7 +138,7 @@ export class SenderCertificateService {
     };
     promise = doFetch();
 
-    assert(
+    assertDev(
       !this.fetchPromises.has(mode),
       'Sender certificate service somehow already had a promise for this mode'
     );
@@ -150,7 +150,7 @@ export class SenderCertificateService {
     mode: SenderCertificateMode
   ): Promise<undefined | SerializedCertificateType> {
     const { storage, navigator, onlineEventTarget } = this;
-    assert(
+    assertDev(
       storage && navigator && onlineEventTarget,
       'Sender certificate service method was called before it was initialized'
     );
@@ -205,7 +205,7 @@ export class SenderCertificateService {
     mode: SenderCertificateMode
   ): Promise<string> {
     const { server } = this;
-    assert(
+    assertDev(
       server,
       'Sender certificate service method was called before it was initialized'
     );
diff --git a/ts/services/storageRecordOps.ts b/ts/services/storageRecordOps.ts
index 5f51be005..9e44c54d8 100644
--- a/ts/services/storageRecordOps.ts
+++ b/ts/services/storageRecordOps.ts
@@ -15,7 +15,7 @@ import {
   waitThenMaybeUpdateGroup,
   waitThenRespondToGroupV2Migration,
 } from '../groups';
-import { assert } from '../util/assert';
+import { assertDev } from '../util/assert';
 import { dropNull } from '../util/dropNull';
 import { normalizeUuid } from '../util/normalizeUuid';
 import { missingCaseError } from '../util/missingCaseError';
@@ -1098,7 +1098,7 @@ export async function mergeAccountRecord(
       phoneNumberSharingModeToStore = PhoneNumberSharingMode.Nobody;
       break;
     default:
-      assert(
+      assertDev(
         false,
         `storageService.mergeAccountRecord: Got an unexpected phone number sharing mode: ${phoneNumberSharingMode}. Falling back to default`
       );
@@ -1505,14 +1505,14 @@ export async function mergeStickerPackRecord(
   );
 
   if (localStickerPack && !wasUninstalled && isUninstalled) {
-    assert(localStickerPack.key, 'Installed sticker pack has no key');
+    assertDev(localStickerPack.key, 'Installed sticker pack has no key');
     window.reduxActions.stickers.uninstallStickerPack(
       localStickerPack.id,
       localStickerPack.key,
       { fromStorageService: true }
     );
   } else if ((!localStickerPack || wasUninstalled) && !isUninstalled) {
-    assert(stickerPack.key, 'Sticker pack does not have key');
+    assertDev(stickerPack.key, 'Sticker pack does not have key');
 
     const status = Stickers.getStickerPackStatus(stickerPack.id);
     if (status === 'downloaded') {
diff --git a/ts/sql/Client.ts b/ts/sql/Client.ts
index 06af49e56..232a1f91f 100644
--- a/ts/sql/Client.ts
+++ b/ts/sql/Client.ts
@@ -27,7 +27,7 @@ import { tapToViewMessagesDeletionService } from '../services/tapToViewMessagesD
 import * as Bytes from '../Bytes';
 import { CURRENT_SCHEMA_VERSION } from '../types/Message2';
 import { createBatcher } from '../util/batcher';
-import { assert, softAssert, strictAssert } from '../util/assert';
+import { assertDev, softAssert, strictAssert } from '../util/assert';
 import { mapObjectWithSpec } from '../util/mapObjectWithSpec';
 import type { ObjectMappingSpecType } from '../util/mapObjectWithSpec';
 import { cleanDataForIpc } from './cleanDataForIpc';
@@ -460,7 +460,7 @@ export function _cleanMessageData(data: MessageType): MessageType {
   const result = { ...data };
   // Ensure that all messages have the received_at set properly
   if (!data.received_at) {
-    assert(false, 'received_at was not set on the message');
+    assertDev(false, 'received_at was not set on the message');
     result.received_at = window.Signal.Util.incrementMessageCounter();
   }
   if (data.attachments) {
@@ -1052,7 +1052,7 @@ const updateConversationBatcher = createBatcher<ConversationType>({
     const ids = Object.keys(byId);
     const mostRecent = ids.map((id: string): ConversationType => {
       const maybeLast = last(byId[id]);
-      assert(maybeLast !== undefined, 'Empty array in `groupBy` result');
+      assertDev(maybeLast !== undefined, 'Empty array in `groupBy` result');
       return maybeLast;
     });
 
@@ -1068,7 +1068,7 @@ async function updateConversations(
   array: Array<ConversationType>
 ): Promise<void> {
   const { cleaned, pathsChanged } = cleanDataForIpc(array);
-  assert(
+  assertDev(
     !pathsChanged.length,
     `Paths were cleaned: ${JSON.stringify(pathsChanged)}`
   );
diff --git a/ts/sql/Server.ts b/ts/sql/Server.ts
index 36f0d1150..43dde3bce 100644
--- a/ts/sql/Server.ts
+++ b/ts/sql/Server.ts
@@ -34,7 +34,7 @@ import { STORAGE_UI_KEYS } from '../types/StorageUIKeys';
 import { UUID } from '../types/UUID';
 import type { UUIDStringType } from '../types/UUID';
 import type { StoredJob } from '../jobs/types';
-import { assert, assertSync, strictAssert } from '../util/assert';
+import { assertDev, assertSync, strictAssert } from '../util/assert';
 import { combineNames } from '../util/combineNames';
 import { consoleLogger } from '../util/consoleLogger';
 import { dropNull } from '../util/dropNull';
@@ -376,7 +376,7 @@ function rowToConversation(row: ConversationRow): ConversationType {
   if (isNormalNumber(row.profileLastFetchedAt)) {
     profileLastFetchedAt = row.profileLastFetchedAt;
   } else {
-    assert(
+    assertDev(
       isNil(row.profileLastFetchedAt),
       'profileLastFetchedAt contained invalid data; defaulting to undefined'
     );
diff --git a/ts/sql/migrations/43-gv2-uuid.ts b/ts/sql/migrations/43-gv2-uuid.ts
index ee49acaa1..2e3eb0104 100644
--- a/ts/sql/migrations/43-gv2-uuid.ts
+++ b/ts/sql/migrations/43-gv2-uuid.ts
@@ -7,7 +7,7 @@ import { omit } from 'lodash';
 import type { LoggerType } from '../../types/Logging';
 import type { UUIDStringType } from '../../types/UUID';
 import { isNotNil } from '../../util/isNotNil';
-import { assert } from '../../util/assert';
+import { assertDev } from '../../util/assert';
 import {
   TableIterator,
   getCountFromTable,
@@ -225,7 +225,7 @@ export default function updateToSchemaVersion43(
     let result = message;
 
     if (groupV2Change) {
-      assert(result.groupV2Change, 'Pacify typescript');
+      assertDev(result.groupV2Change, 'Pacify typescript');
 
       const from: UUIDStringType | undefined = getConversationUuid.get({
         conversationId: groupV2Change.from,
@@ -250,7 +250,7 @@ export default function updateToSchemaVersion43(
       const details = groupV2Change.details
         .map((legacyDetail, i) => {
           const oldDetail = result.groupV2Change?.details[i];
-          assert(oldDetail, 'Pacify typescript');
+          assertDev(oldDetail, 'Pacify typescript');
           let newDetail = oldDetail;
 
           for (const key of ['conversationId' as const, 'inviter' as const]) {
@@ -276,7 +276,10 @@ export default function updateToSchemaVersion43(
               return undefined;
             }
 
-            assert(newDetail.type === legacyDetail.type, 'Pacify typescript');
+            assertDev(
+              newDetail.type === legacyDetail.type,
+              'Pacify typescript'
+            );
             newDetail = {
               ...omit(newDetail, key),
               [newKey]: newValue,
@@ -319,7 +322,7 @@ export default function updateToSchemaVersion43(
           });
           const oldMember =
             result.invitedGV2Members && result.invitedGV2Members[i];
-          assert(oldMember !== undefined, 'Pacify typescript');
+          assertDev(oldMember !== undefined, 'Pacify typescript');
 
           if (!uuid) {
             logger.warn(
diff --git a/ts/state/ducks/conversations.ts b/ts/state/ducks/conversations.ts
index f971aae38..783fc9922 100644
--- a/ts/state/ducks/conversations.ts
+++ b/ts/state/ducks/conversations.ts
@@ -19,7 +19,7 @@ import * as groups from '../../groups';
 import * as log from '../../logging/log';
 import { calling } from '../../services/calling';
 import { getOwn } from '../../util/getOwn';
-import { assert, strictAssert } from '../../util/assert';
+import { assertDev, strictAssert } from '../../util/assert';
 import * as universalExpireTimer from '../../util/universalExpireTimer';
 import type {
   ShowSendAnywayDialogActiontype,
@@ -1533,7 +1533,7 @@ function createGroup(
       composer?.step !== ComposerStep.SetGroupMetadata ||
       composer.isCreating
     ) {
-      assert(false, 'Cannot create group in this stage; doing nothing');
+      assertDev(false, 'Cannot create group in this stage; doing nothing');
       return;
     }
 
@@ -1915,7 +1915,7 @@ function toggleConversationInChooseMembers(
       maxRecommendedGroupSize + 1
     );
 
-    assert(
+    assertDev(
       maxGroupSize > maxRecommendedGroupSize,
       'Expected the hard max group size to be larger than the recommended maximum'
     );
@@ -2157,7 +2157,10 @@ function closeComposerModal(
 ): ConversationsStateType {
   const { composer } = state;
   if (composer?.step !== ComposerStep.ChooseGroupMembers) {
-    assert(false, "Can't close the modal in this composer step. Doing nothing");
+    assertDev(
+      false,
+      "Can't close the modal in this composer step. Doing nothing"
+    );
     return state;
   }
   if (composer[modalToClose] !== OneTimeModalState.Showing) {
@@ -2292,7 +2295,7 @@ export function reducer(
   if (action.type === 'CLEAR_GROUP_CREATION_ERROR') {
     const { composer } = state;
     if (composer?.step !== ComposerStep.SetGroupMetadata) {
-      assert(
+      assertDev(
         false,
         "Can't clear group creation error in this composer state. Doing nothing"
       );
@@ -3263,7 +3266,7 @@ export function reducer(
       case ComposerStep.SetGroupMetadata:
         return state;
       default:
-        assert(
+        assertDev(
           false,
           'Cannot transition to setting group metadata from this state'
         );
@@ -3285,7 +3288,10 @@ export function reducer(
           },
         };
       default:
-        assert(false, 'Setting compose group avatar at this step is a no-op');
+        assertDev(
+          false,
+          'Setting compose group avatar at this step is a no-op'
+        );
         return state;
     }
   }
@@ -3304,7 +3310,7 @@ export function reducer(
           },
         };
       default:
-        assert(false, 'Setting compose group name at this step is a no-op');
+        assertDev(false, 'Setting compose group name at this step is a no-op');
         return state;
     }
   }
@@ -3323,7 +3329,7 @@ export function reducer(
           },
         };
       default:
-        assert(false, 'Setting compose group name at this step is a no-op');
+        assertDev(false, 'Setting compose group name at this step is a no-op');
         return state;
     }
   }
@@ -3331,7 +3337,7 @@ export function reducer(
   if (action.type === 'SET_COMPOSE_SEARCH_TERM') {
     const { composer } = state;
     if (!composer) {
-      assert(
+      assertDev(
         false,
         'Setting compose search term with the composer closed is a no-op'
       );
@@ -3341,7 +3347,7 @@ export function reducer(
       composer.step !== ComposerStep.StartDirectConversation &&
       composer.step !== ComposerStep.ChooseGroupMembers
     ) {
-      assert(
+      assertDev(
         false,
         `Setting compose search term at step ${composer.step} is a no-op`
       );
@@ -3360,7 +3366,7 @@ export function reducer(
   if (action.type === 'SET_IS_FETCHING_UUID') {
     const { composer } = state;
     if (!composer) {
-      assert(
+      assertDev(
         false,
         'Setting compose uuid fetch state with the composer closed is a no-op'
       );
@@ -3370,7 +3376,10 @@ export function reducer(
       composer.step !== ComposerStep.StartDirectConversation &&
       composer.step !== ComposerStep.ChooseGroupMembers
     ) {
-      assert(false, 'Setting compose uuid fetch state at this step is a no-op');
+      assertDev(
+        false,
+        'Setting compose uuid fetch state at this step is a no-op'
+      );
       return state;
     }
     const { identifier, isFetching } = action.payload;
@@ -3404,7 +3413,7 @@ export function reducer(
           },
         };
       default:
-        assert(false, 'Setting editing avatar at this step is a no-op');
+        assertDev(false, 'Setting editing avatar at this step is a no-op');
         return state;
     }
   }
@@ -3430,7 +3439,7 @@ export function reducer(
           },
         };
       default:
-        assert(false, 'Adding an avatar at this step is a no-op');
+        assertDev(false, 'Adding an avatar at this step is a no-op');
         return state;
     }
   }
@@ -3450,7 +3459,7 @@ export function reducer(
           },
         };
       default:
-        assert(false, 'Removing an avatar at this step is a no-op');
+        assertDev(false, 'Removing an avatar at this step is a no-op');
         return state;
     }
   }
@@ -3478,7 +3487,7 @@ export function reducer(
           },
         };
       default:
-        assert(false, 'Replacing an avatar at this step is a no-op');
+        assertDev(false, 'Replacing an avatar at this step is a no-op');
         return state;
     }
   }
@@ -3486,7 +3495,7 @@ export function reducer(
   if (action.type === 'TOGGLE_CONVERSATION_IN_CHOOSE_MEMBERS') {
     const { composer } = state;
     if (composer?.step !== ComposerStep.ChooseGroupMembers) {
-      assert(
+      assertDev(
         false,
         'Toggling conversation members is a no-op in this composer step'
       );
diff --git a/ts/state/ducks/stories.ts b/ts/state/ducks/stories.ts
index 77645662d..8acc30aea 100644
--- a/ts/state/ducks/stories.ts
+++ b/ts/state/ducks/stories.ts
@@ -25,7 +25,7 @@ import { SafetyNumberChangeSource } from '../../components/SafetyNumberChangeDia
 import { StoryViewDirectionType, StoryViewModeType } from '../../types/Stories';
 import { StoryRecipientUpdateEvent } from '../../textsecure/messageReceiverEvents';
 import { ToastReactionFailed } from '../../components/ToastReactionFailed';
-import { assert } from '../../util/assert';
+import { assertDev } from '../../util/assert';
 import { blockSendUntilConversationsAreVerified } from '../../util/blockSendUntilConversationsAreVerified';
 import { enqueueReactionForSend } from '../../reactions/enqueueReactionForSend';
 import { getMessageById } from '../../messages/getMessageById';
@@ -611,11 +611,11 @@ function sendStoryMessage(
   return async (dispatch, getState) => {
     const { stories } = getState();
     const { openedAtTimestamp, sendStoryModalData } = stories;
-    assert(
+    assertDev(
       openedAtTimestamp,
       'sendStoryMessage: openedAtTimestamp is undefined, cannot send'
     );
-    assert(
+    assertDev(
       sendStoryModalData,
       'sendStoryMessage: sendStoryModalData is not defined, cannot send'
     );
diff --git a/ts/state/selectors/conversations.ts b/ts/state/selectors/conversations.ts
index 8928f27f1..394f787fd 100644
--- a/ts/state/selectors/conversations.ts
+++ b/ts/state/selectors/conversations.ts
@@ -28,7 +28,7 @@ import type { UUIDFetchStateType } from '../../util/uuidFetchState';
 import { deconstructLookup } from '../../util/deconstructLookup';
 import type { PropsDataType as TimelinePropsType } from '../../components/conversation/Timeline';
 import type { TimelineItemType } from '../../components/conversation/TimelineItem';
-import { assert } from '../../util/assert';
+import { assertDev } from '../../util/assert';
 import { isConversationUnregistered } from '../../util/isConversationUnregistered';
 import { filterAndSortConversationsByRecent } from '../../util/filterAndSortConversations';
 import type { ContactNameColorType } from '../../types/Colors';
@@ -344,7 +344,7 @@ export const getMaximumGroupSizeModalState = createSelector(
       case ComposerStep.SetGroupMetadata:
         return composerState.maximumGroupSizeModalState;
       default:
-        assert(
+        assertDev(
           false,
           'Can\'t get the maximum group size modal state in this composer state; returning "never shown"'
         );
@@ -361,7 +361,7 @@ export const getRecommendedGroupSizeModalState = createSelector(
       case ComposerStep.SetGroupMetadata:
         return composerState.recommendedGroupSizeModalState;
       default:
-        assert(
+        assertDev(
           false,
           'Can\'t get the recommended group size modal state in this composer state; returning "never shown"'
         );
@@ -388,11 +388,14 @@ export const getComposerConversationSearchTerm = createSelector(
   getComposerState,
   (composer): string => {
     if (!composer) {
-      assert(false, 'getComposerConversationSearchTerm: composer is not open');
+      assertDev(
+        false,
+        'getComposerConversationSearchTerm: composer is not open'
+      );
       return '';
     }
     if (composer.step === ComposerStep.SetGroupMetadata) {
-      assert(
+      assertDev(
         false,
         'getComposerConversationSearchTerm: composer does not have a search term'
       );
@@ -406,14 +409,14 @@ export const getComposerUUIDFetchState = createSelector(
   getComposerState,
   (composer): UUIDFetchStateType => {
     if (!composer) {
-      assert(false, 'getIsFetchingUsername: composer is not open');
+      assertDev(false, 'getIsFetchingUsername: composer is not open');
       return {};
     }
     if (
       composer.step !== ComposerStep.StartDirectConversation &&
       composer.step !== ComposerStep.ChooseGroupMembers
     ) {
-      assert(
+      assertDev(
         false,
         `getComposerUUIDFetchState: step ${composer.step} ` +
           'has no uuidFetchState key'
@@ -583,7 +586,7 @@ const getGroupCreationComposerState = createSelector(
       case ComposerStep.SetGroupMetadata:
         return composerState;
       default:
-        assert(
+        assertDev(
           false,
           'getSetGroupMetadataComposerState: expected step to be SetGroupMetadata'
         );
diff --git a/ts/state/selectors/linkPreviews.ts b/ts/state/selectors/linkPreviews.ts
index 107218a1c..e2ba7f7af 100644
--- a/ts/state/selectors/linkPreviews.ts
+++ b/ts/state/selectors/linkPreviews.ts
@@ -3,7 +3,7 @@
 
 import { createSelector } from 'reselect';
 
-import { assert } from '../../util/assert';
+import { assertDev } from '../../util/assert';
 import { getDomain } from '../../types/LinkPreview';
 
 import type { LinkPreviewSourceType } from '../../types/LinkPreview';
@@ -22,7 +22,10 @@ export const getLinkPreview = createSelector(
       }
 
       const domain = getDomain(linkPreview.url);
-      assert(domain !== undefined, "Domain of linkPreview can't be undefined");
+      assertDev(
+        domain !== undefined,
+        "Domain of linkPreview can't be undefined"
+      );
 
       return {
         ...linkPreview,
diff --git a/ts/state/smart/ConversationDetails.tsx b/ts/state/smart/ConversationDetails.tsx
index 80b3cfdbe..c433ed2c3 100644
--- a/ts/state/smart/ConversationDetails.tsx
+++ b/ts/state/smart/ConversationDetails.tsx
@@ -21,7 +21,7 @@ import {
   getBadgesSelector,
   getPreferredBadgeSelector,
 } from '../selectors/badges';
-import { assert } from '../../util/assert';
+import { assertDev } from '../../util/assert';
 import { SignalService as Proto } from '../../protobuf';
 import { getConversationColorAttributes } from '../../util/getConversationColorAttributes';
 import type { SmartChooseGroupMembersModalPropsType } from './ChooseGroupMembersModal';
@@ -78,7 +78,7 @@ const mapStateToProps = (
 ): StateProps => {
   const conversationSelector = getConversationByIdSelector(state);
   const conversation = conversationSelector(props.conversationId);
-  assert(
+  assertDev(
     conversation,
     '<SmartConversationDetails> expected a conversation to be found'
   );
diff --git a/ts/state/smart/InstallScreen.tsx b/ts/state/smart/InstallScreen.tsx
index 372288aee..a46c08010 100644
--- a/ts/state/smart/InstallScreen.tsx
+++ b/ts/state/smart/InstallScreen.tsx
@@ -10,7 +10,7 @@ import { getIntl } from '../selectors/user';
 import * as log from '../../logging/log';
 import type { Loadable } from '../../util/loadable';
 import { LoadingState } from '../../util/loadable';
-import { assert } from '../../util/assert';
+import { assertDev } from '../../util/assert';
 import { explodePromise } from '../../util/explodePromise';
 import { missingCaseError } from '../../util/missingCaseError';
 import {
@@ -134,7 +134,7 @@ export function SmartInstallScreen(): ReactElement {
     let deviceName: string = normalizeDeviceName(state.deviceName);
     if (!deviceName.length) {
       // This should be impossible, but we have it here just in case.
-      assert(
+      assertDev(
         false,
         'Unexpected empty device name. Falling back to placeholder value'
       );
@@ -149,7 +149,7 @@ export function SmartInstallScreen(): ReactElement {
     let hasCleanedUp = false;
 
     const accountManager = window.getAccountManager();
-    assert(accountManager, 'Expected an account manager');
+    assertDev(accountManager, 'Expected an account manager');
 
     const updateProvisioningUrl = (value: string): void => {
       if (hasCleanedUp) {
diff --git a/ts/state/smart/PendingInvites.tsx b/ts/state/smart/PendingInvites.tsx
index 281c6d335..40753ff2c 100644
--- a/ts/state/smart/PendingInvites.tsx
+++ b/ts/state/smart/PendingInvites.tsx
@@ -14,7 +14,7 @@ import {
   getConversationByUuidSelector,
 } from '../selectors/conversations';
 import { getGroupMemberships } from '../../util/getGroupMemberships';
-import { assert } from '../../util/assert';
+import { assertDev } from '../../util/assert';
 import type { UUIDStringType } from '../../types/UUID';
 
 export type SmartPendingInvitesProps = {
@@ -32,7 +32,7 @@ const mapStateToProps = (
   const conversationByUuidSelector = getConversationByUuidSelector(state);
 
   const conversation = conversationSelector(props.conversationId);
-  assert(
+  assertDev(
     conversation,
     '<SmartPendingInvites> expected a conversation to be found'
   );
diff --git a/ts/state/smart/Timeline.tsx b/ts/state/smart/Timeline.tsx
index 369a1142b..be8170038 100644
--- a/ts/state/smart/Timeline.tsx
+++ b/ts/state/smart/Timeline.tsx
@@ -38,7 +38,7 @@ import { renderEmojiPicker } from './renderEmojiPicker';
 import { renderReactionPicker } from './renderReactionPicker';
 
 import { getOwn } from '../../util/getOwn';
-import { assert } from '../../util/assert';
+import { assertDev } from '../../util/assert';
 import { missingCaseError } from '../../util/missingCaseError';
 import { getGroupMemberships } from '../../util/getGroupMemberships';
 import {
@@ -177,7 +177,7 @@ const getWarning = (
         const conversationsWithSameTitle = getConversationsWithTitle(
           conversation.title
         );
-        assert(
+        assertDev(
           conversationsWithSameTitle.length,
           'Expected at least 1 conversation with the same title (this one)'
         );
diff --git a/ts/test-both/util/assert_test.ts b/ts/test-both/util/assert_test.ts
index 762520917..177cf0cbf 100644
--- a/ts/test-both/util/assert_test.ts
+++ b/ts/test-both/util/assert_test.ts
@@ -3,17 +3,17 @@
 
 import { assert as chaiAssert } from 'chai';
 
-import { assert, strictAssert } from '../../util/assert';
+import { assertDev, strictAssert } from '../../util/assert';
 
 describe('assert utilities', () => {
   describe('assert', () => {
     it('does nothing if the assertion passes', () => {
-      assert(true, 'foo bar');
+      assertDev(true, 'foo bar');
     });
 
     it("throws if the assertion fails, because we're in a test environment", () => {
       chaiAssert.throws(() => {
-        assert(false, 'foo bar');
+        assertDev(false, 'foo bar');
       }, 'foo bar');
     });
   });
diff --git a/ts/test-node/jobs/JobQueue_test.ts b/ts/test-node/jobs/JobQueue_test.ts
index ab0ba4ce2..e935061f3 100644
--- a/ts/test-node/jobs/JobQueue_test.ts
+++ b/ts/test-node/jobs/JobQueue_test.ts
@@ -304,7 +304,6 @@ describe('JobQueue', () => {
             case 'bar':
               barAttempts += 1;
               throw new Error('bar job always fails in this test');
-              break;
             default:
               throw missingCaseError(data);
           }
diff --git a/ts/textsecure/AccountManager.ts b/ts/textsecure/AccountManager.ts
index 6bb147f56..961a01f3a 100644
--- a/ts/textsecure/AccountManager.ts
+++ b/ts/textsecure/AccountManager.ts
@@ -30,7 +30,7 @@ import {
 import { UUID, UUIDKind } from '../types/UUID';
 import { isMoreRecentThan, isOlderThan } from '../util/timestamp';
 import { ourProfileKeyService } from '../services/ourProfileKey';
-import { assert, strictAssert } from '../util/assert';
+import { assertDev, strictAssert } from '../util/assert';
 import { getRegionCodeForNumber } from '../util/libphonenumberUtil';
 import { getProvisioningUrl } from '../util/getProvisioningUrl';
 import { isNotNil } from '../util/isNotNil';
@@ -114,7 +114,7 @@ export default class AccountManager extends EventTarget {
 
     const bytes = Bytes.fromBase64(base64);
     const proto = Proto.DeviceName.decode(bytes);
-    assert(
+    assertDev(
       proto.ephemeralPublic && proto.syntheticIv && proto.ciphertext,
       'Missing required fields in DeviceName'
     );
diff --git a/ts/textsecure/SendMessage.ts b/ts/textsecure/SendMessage.ts
index 2361aedcb..34b818a26 100644
--- a/ts/textsecure/SendMessage.ts
+++ b/ts/textsecure/SendMessage.ts
@@ -16,7 +16,7 @@ import {
 import type { QuotedMessageType } from '../model-types.d';
 import type { ConversationModel } from '../models/conversations';
 import { GLOBAL_ZONE } from '../SignalProtocolStore';
-import { assert, strictAssert } from '../util/assert';
+import { assertDev, strictAssert } from '../util/assert';
 import { parseIntOrThrow } from '../util/parseIntOrThrow';
 import { Address } from '../types/Address';
 import { QualifiedAddress } from '../types/QualifiedAddress';
@@ -673,7 +673,7 @@ export default class MessageSender {
         Pick<AttachmentType, 'data' | 'size' | 'contentType'>
     >
   ): Promise<Proto.IAttachmentPointer> {
-    assert(
+    assertDev(
       typeof attachment === 'object' && attachment != null,
       'Got null attachment in `makeAttachmentPointer`'
     );
@@ -1300,7 +1300,7 @@ export default class MessageSender {
     timestamp: number;
     urgent: boolean;
   }>): Promise<CallbackResultType> {
-    assert(identifier, "Identifier can't be undefined");
+    assertDev(identifier, "Identifier can't be undefined");
     return new Promise((resolve, reject) => {
       const callback = (res: CallbackResultType) => {
         if (res && res.errors && res.errors.length > 0) {
diff --git a/ts/textsecure/Storage.ts b/ts/textsecure/Storage.ts
index 28c7b0d27..1e13f9849 100644
--- a/ts/textsecure/Storage.ts
+++ b/ts/textsecure/Storage.ts
@@ -8,7 +8,7 @@ import type {
 import { User } from './storage/User';
 import { Blocked } from './storage/Blocked';
 
-import { assert } from '../util/assert';
+import { assertDev } from '../util/assert';
 import Data from '../sql/Client';
 import type { SignalProtocolStore } from '../SignalProtocolStore';
 import * as log from '../logging/log';
@@ -34,7 +34,7 @@ export class Storage implements StorageInterface {
   }
 
   get protocol(): SignalProtocolStore {
-    assert(
+    assertDev(
       this.privProtocol !== undefined,
       'SignalProtocolStore not initialized'
     );
diff --git a/ts/textsecure/SyncRequest.ts b/ts/textsecure/SyncRequest.ts
index 7b893e3ea..4fb7b36c5 100644
--- a/ts/textsecure/SyncRequest.ts
+++ b/ts/textsecure/SyncRequest.ts
@@ -9,7 +9,7 @@ import EventTarget from './EventTarget';
 import MessageReceiver from './MessageReceiver';
 import type { ContactSyncEvent, GroupSyncEvent } from './messageReceiverEvents';
 import MessageSender from './SendMessage';
-import { assert } from '../util/assert';
+import { assertDev } from '../util/assert';
 import * as log from '../logging/log';
 import { singleProtoJobQueue } from '../jobs/singleProtoJobQueue';
 import * as Errors from '../types/errors';
@@ -49,7 +49,10 @@ class SyncRequestInner extends EventTarget {
 
   async start(): Promise<void> {
     if (this.started) {
-      assert(false, 'SyncRequestInner: started more than once. Doing nothing');
+      assertDev(
+        false,
+        'SyncRequestInner: started more than once. Doing nothing'
+      );
       return;
     }
     this.started = true;
diff --git a/ts/textsecure/WebAPI.ts b/ts/textsecure/WebAPI.ts
index ed9dde0ac..659eee92d 100644
--- a/ts/textsecure/WebAPI.ts
+++ b/ts/textsecure/WebAPI.ts
@@ -18,7 +18,7 @@ import { v4 as getGuid } from 'uuid';
 import { z } from 'zod';
 import type { Readable } from 'stream';
 
-import { assert, strictAssert } from '../util/assert';
+import { assertDev, strictAssert } from '../util/assert';
 import { isRecord } from '../util/isRecord';
 import * as durations from '../util/durations';
 import type { ExplodePromiseResultType } from '../util/explodePromise';
@@ -391,7 +391,7 @@ async function _promiseAjax(
   log.info(logId, response.status, 'Success');
 
   if (options.responseType === 'byteswithdetails') {
-    assert(result instanceof Uint8Array, 'Expected Uint8Array result');
+    assertDev(result instanceof Uint8Array, 'Expected Uint8Array result');
     const fullResult: BytesWithDetailsType = {
       data: result,
       contentType: getContentType(response),
diff --git a/ts/textsecure/processDataMessage.ts b/ts/textsecure/processDataMessage.ts
index c9c206ceb..dd0fac823 100644
--- a/ts/textsecure/processDataMessage.ts
+++ b/ts/textsecure/processDataMessage.ts
@@ -5,7 +5,7 @@ import Long from 'long';
 import { ReceiptCredentialPresentation } from '@signalapp/libsignal-client/zkgroup';
 import { isNumber } from 'lodash';
 
-import { assert, strictAssert } from '../util/assert';
+import { assertDev, strictAssert } from '../util/assert';
 import { dropNull, shallowDropNull } from '../util/dropNull';
 import { SignalService as Proto } from '../protobuf';
 import { deriveGroupFields } from '../groups';
@@ -331,7 +331,7 @@ export async function processDataMessage(
     isExpirationTimerUpdate,
     isProfileKeyUpdate,
   ].filter(Boolean).length;
-  assert(
+  assertDev(
     flagCount <= 1,
     `Expected exactly <=1 flags to be set, but got ${flagCount}`
   );
diff --git a/ts/updateConversationsWithUuidLookup.ts b/ts/updateConversationsWithUuidLookup.ts
index ed9433495..7bd2b2fc3 100644
--- a/ts/updateConversationsWithUuidLookup.ts
+++ b/ts/updateConversationsWithUuidLookup.ts
@@ -4,7 +4,7 @@
 import type { ConversationController } from './ConversationController';
 import type { ConversationModel } from './models/conversations';
 import type { WebAPIType } from './textsecure/WebAPI';
-import { assert } from './util/assert';
+import { assertDev } from './util/assert';
 import { isNotNil } from './util/isNotNil';
 import { getUuidsForE164s } from './util/getUuidsForE164s';
 
@@ -47,7 +47,7 @@ export async function updateConversationsWithUuidLookup({
             e164,
             reason: 'updateConversationsWithUuidLookup',
           });
-        assert(
+        assertDev(
           maybeFinalConversation,
           'updateConversationsWithUuidLookup: expected a conversation to be found or created'
         );
diff --git a/ts/util/assert.ts b/ts/util/assert.ts
index 0c1046ba8..b58c2f0ac 100644
--- a/ts/util/assert.ts
+++ b/ts/util/assert.ts
@@ -22,7 +22,10 @@ export function softAssert(condition: unknown, message: string): void {
 /**
  * In production, logs an error and continues. In all other environments, throws an error.
  */
-export function assert(condition: unknown, message: string): asserts condition {
+export function assertDev(
+  condition: unknown,
+  message: string
+): asserts condition {
   if (!condition) {
     const err = new Error(message);
     if (getEnvironment() !== Environment.Production) {
diff --git a/ts/util/createIPCEvents.tsx b/ts/util/createIPCEvents.tsx
index 69e2741f9..b8f561621 100644
--- a/ts/util/createIPCEvents.tsx
+++ b/ts/util/createIPCEvents.tsx
@@ -31,7 +31,7 @@ import { renderClearingDataView } from '../shims/renderClearingDataView';
 import * as universalExpireTimer from './universalExpireTimer';
 import { PhoneNumberDiscoverability } from './phoneNumberDiscoverability';
 import { PhoneNumberSharingMode } from './phoneNumberSharingMode';
-import { assert } from './assert';
+import { assertDev } from './assert';
 import * as durations from './durations';
 import { isPhoneNumberSharingEnabled } from './isPhoneNumberSharingEnabled';
 import { parseE164FromSignalDotMeHash } from './sgnlHref';
@@ -360,7 +360,7 @@ export function createIPCEvents(
       const conversationId =
         window.ConversationController.getOurConversationIdOrThrow();
       const account = window.ConversationController.get(conversationId);
-      assert(account, "Account wasn't found");
+      assertDev(account, "Account wasn't found");
 
       account.captureChange('universalExpireTimer');
 
@@ -369,7 +369,7 @@ export function createIPCEvents(
       const selectedId = state.conversations.selectedConversationId;
       if (selectedId) {
         const conversation = window.ConversationController.get(selectedId);
-        assert(conversation, "Conversation wasn't found");
+        assertDev(conversation, "Conversation wasn't found");
 
         await conversation.updateLastMessage();
       }
diff --git a/ts/util/deconstructLookup.ts b/ts/util/deconstructLookup.ts
index c89dc940a..1f08bea9c 100644
--- a/ts/util/deconstructLookup.ts
+++ b/ts/util/deconstructLookup.ts
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: AGPL-3.0-only
 
 import { getOwn } from './getOwn';
-import { assert } from './assert';
+import { assertDev } from './assert';
 
 export const deconstructLookup = <T>(
   lookup: Record<string, T>,
@@ -14,7 +14,7 @@ export const deconstructLookup = <T>(
     if (value) {
       result.push(value);
     } else {
-      assert(false, `deconstructLookup: lookup failed for ${key}; dropping`);
+      assertDev(false, `deconstructLookup: lookup failed for ${key}; dropping`);
     }
   });
   return result;
diff --git a/ts/util/emoji.ts b/ts/util/emoji.ts
index b46faa502..30980732c 100644
--- a/ts/util/emoji.ts
+++ b/ts/util/emoji.ts
@@ -3,7 +3,7 @@
 
 import emojiRegex from 'emoji-regex';
 
-import { assert } from './assert';
+import { assertDev } from './assert';
 import { take } from './iterables';
 
 const REGEXP = emojiRegex();
@@ -31,7 +31,7 @@ export function splitByEmoji(value: string): ReadonlyArray<SplitElement> {
 
     result.push({ type: 'emoji', value: match[0] });
 
-    assert(match.index !== undefined, '`matchAll` should provide indices');
+    assertDev(match.index !== undefined, '`matchAll` should provide indices');
     lastIndex = match.index + match[0].length;
   }
 
diff --git a/ts/util/encryptProfileData.ts b/ts/util/encryptProfileData.ts
index 16b8d3584..e72d2203c 100644
--- a/ts/util/encryptProfileData.ts
+++ b/ts/util/encryptProfileData.ts
@@ -3,7 +3,7 @@
 
 import type { ConversationType } from '../state/ducks/conversations';
 import type { ProfileRequestDataType } from '../textsecure/WebAPI';
-import { assert } from './assert';
+import { assertDev } from './assert';
 import * as Bytes from '../Bytes';
 import {
   PaddedLengths,
@@ -27,8 +27,8 @@ export async function encryptProfileData(
     uuid,
   } = conversation;
 
-  assert(profileKey, 'profileKey');
-  assert(uuid, 'uuid');
+  assertDev(profileKey, 'profileKey');
+  assertDev(uuid, 'uuid');
 
   const keyBuffer = Bytes.fromBase64(profileKey);
 
diff --git a/ts/util/safetyNumber.ts b/ts/util/safetyNumber.ts
index f75167f1f..39b02016f 100644
--- a/ts/util/safetyNumber.ts
+++ b/ts/util/safetyNumber.ts
@@ -5,7 +5,7 @@ import { PublicKey, Fingerprint } from '@signalapp/libsignal-client';
 import type { ConversationType } from '../state/ducks/conversations';
 import { UUID } from '../types/UUID';
 
-import { assert } from './assert';
+import { assertDev } from './assert';
 import * as log from '../logging/log';
 
 export async function generateSecurityNumber(
@@ -63,7 +63,7 @@ export async function generateSecurityNumberBlock(
     return [];
   }
 
-  assert(ourNumber, 'Should have our number');
+  assertDev(ourNumber, 'Should have our number');
   const securityNumber = await generateSecurityNumber(
     ourNumber,
     ourKey,
diff --git a/ts/util/shouldNeverBeCalled.ts b/ts/util/shouldNeverBeCalled.ts
index d07ecb574..0d0b2272d 100644
--- a/ts/util/shouldNeverBeCalled.ts
+++ b/ts/util/shouldNeverBeCalled.ts
@@ -1,10 +1,10 @@
 // Copyright 2021-2022 Signal Messenger, LLC
 // SPDX-License-Identifier: AGPL-3.0-only
 
-import { assert } from './assert';
+import { assertDev } from './assert';
 
 export function shouldNeverBeCalled(..._args: ReadonlyArray<unknown>): void {
-  assert(false, 'This should never be called. Doing nothing');
+  assertDev(false, 'This should never be called. Doing nothing');
 }
 
 export async function asyncShouldNeverBeCalled(
diff --git a/tsconfig.json b/tsconfig.json
index 7fc41063f..060877353 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -29,6 +29,8 @@
 
     // As a temporary measure
     "useUnknownInCatchVariables": false,
+    // Temp: The `assertDev()` function doesn't run in production so we can't rely on this
+    "allowUnreachableCode": true,
 
     // Additional Checks
     "noUnusedLocals": true, // Report errors on unused locals.