diff --git a/lib/permissions/minimally-encoded-thread-permissions-validators.js b/lib/permissions/minimally-encoded-thread-permissions-validators.js
--- a/lib/permissions/minimally-encoded-thread-permissions-validators.js
+++ b/lib/permissions/minimally-encoded-thread-permissions-validators.js
@@ -9,10 +9,10 @@
 import { clientAvatarValidator } from '../types/avatar-types.js';
 import type {
   MinimallyEncodedMemberInfo,
-  RelativeMemberInfo,
-  MinimallyEncodedRoleInfo,
   MinimallyEncodedThreadCurrentUserInfo,
   RawThreadInfo,
+  RelativeMemberInfo,
+  RoleInfo,
   ThreadInfo,
 } from '../types/minimally-encoded-thread-permissions-types.js';
 import { threadTypeValidator } from '../types/thread-types-enum.js';
@@ -26,8 +26,8 @@
 import { threadEntityValidator } from '../utils/entity-text.js';
 import { tBool, tID, tShape } from '../utils/validation-utils.js';
 
-const minimallyEncodedRoleInfoValidator: TInterface<MinimallyEncodedRoleInfo> =
-  tShape<MinimallyEncodedRoleInfo>({
+const minimallyEncodedRoleInfoValidator: TInterface<RoleInfo> =
+  tShape<RoleInfo>({
     ...legacyRoleInfoValidator.meta.props,
     minimallyEncoded: tBool(true),
     permissions: t.list(tHexEncodedRolePermission),
diff --git a/lib/shared/thread-utils.js b/lib/shared/thread-utils.js
--- a/lib/shared/thread-utils.js
+++ b/lib/shared/thread-utils.js
@@ -58,10 +58,10 @@
   type ComposableMessageInfo,
 } from '../types/message-types.js';
 import type {
-  MinimallyEncodedRoleInfo,
   RawThreadInfo,
   MinimallyEncodedThreadCurrentUserInfo,
   RelativeMemberInfo,
+  RoleInfo,
   ThreadInfo,
 } from '../types/minimally-encoded-thread-permissions-types.js';
 import {
@@ -362,7 +362,7 @@
     makePermissionsBlob(permissions, null, threadID, threadType),
     threadID,
   );
-  const role: MinimallyEncodedRoleInfo = minimallyEncodeRoleInfo({
+  const role: RoleInfo = minimallyEncodeRoleInfo({
     id: `${threadID}/role`,
     name: 'Members',
     permissions,
@@ -1038,9 +1038,7 @@
   return !!memberInfo.permissions[threadPermissions.CHANGE_ROLE]?.value;
 }
 
-function roleIsAdminRole(
-  roleInfo: ?LegacyRoleInfo | ?MinimallyEncodedRoleInfo,
-): boolean {
+function roleIsAdminRole(roleInfo: ?LegacyRoleInfo | ?RoleInfo): boolean {
   return !!(roleInfo && !roleInfo.isDefault && roleInfo.name === 'Admins');
 }
 
diff --git a/lib/types/minimally-encoded-thread-permissions-types.js b/lib/types/minimally-encoded-thread-permissions-types.js
--- a/lib/types/minimally-encoded-thread-permissions-types.js
+++ b/lib/types/minimally-encoded-thread-permissions-types.js
@@ -19,15 +19,13 @@
 } from '../permissions/minimally-encoded-thread-permissions.js';
 import type { ThreadEntity } from '../utils/entity-text.js';
 
-export type MinimallyEncodedRoleInfo = $ReadOnly<{
+export type RoleInfo = $ReadOnly<{
   ...LegacyRoleInfo,
   +minimallyEncoded: true,
   +permissions: $ReadOnlyArray<string>,
 }>;
 
-const minimallyEncodeRoleInfo = (
-  roleInfo: LegacyRoleInfo,
-): MinimallyEncodedRoleInfo => {
+const minimallyEncodeRoleInfo = (roleInfo: LegacyRoleInfo): RoleInfo => {
   invariant(
     !('minimallyEncoded' in roleInfo),
     'roleInfo is already minimally encoded.',
@@ -40,7 +38,7 @@
 };
 
 const decodeMinimallyEncodedRoleInfo = (
-  minimallyEncodedRoleInfo: MinimallyEncodedRoleInfo,
+  minimallyEncodedRoleInfo: RoleInfo,
 ): LegacyRoleInfo => {
   const { minimallyEncoded, ...rest } = minimallyEncodedRoleInfo;
   return {
@@ -125,7 +123,7 @@
   ...LegacyRawThreadInfo,
   +minimallyEncoded: true,
   +members: $ReadOnlyArray<MinimallyEncodedMemberInfo>,
-  +roles: { +[id: string]: MinimallyEncodedRoleInfo },
+  +roles: { +[id: string]: RoleInfo },
   +currentUser: MinimallyEncodedThreadCurrentUserInfo,
 }>;
 
@@ -173,7 +171,7 @@
   +containingThreadID: ?string,
   +community: ?string,
   +members: $ReadOnlyArray<RelativeMemberInfo>,
-  +roles: { +[id: string]: MinimallyEncodedRoleInfo },
+  +roles: { +[id: string]: RoleInfo },
   +currentUser: MinimallyEncodedThreadCurrentUserInfo,
   +sourceMessageID?: string,
   +repliesCount: number,
diff --git a/lib/utils/role-utils.js b/lib/utils/role-utils.js
--- a/lib/utils/role-utils.js
+++ b/lib/utils/role-utils.js
@@ -5,8 +5,8 @@
 import { useSelector } from './redux-utils.js';
 import { threadInfoSelector } from '../selectors/thread-selectors.js';
 import type {
-  MinimallyEncodedRoleInfo,
   RelativeMemberInfo,
+  RoleInfo,
   ThreadInfo,
 } from '../types/minimally-encoded-thread-permissions-types.js';
 import {
@@ -58,7 +58,7 @@
 function useRolesFromCommunityThreadInfo(
   threadInfo: ThreadInfo,
   memberInfos: $ReadOnlyArray<RelativeMemberInfo>,
-): $ReadOnlyMap<string, ?MinimallyEncodedRoleInfo> {
+): $ReadOnlyMap<string, ?RoleInfo> {
   // Our in-code system has chat-specific roles, while the
   // user-surfaced system has roles only for communities. We retrieve roles
   // from the top-level community thread for accuracy, with a rare fallback
@@ -73,7 +73,7 @@
     community ? threadInfoSelector(state)[community] : null,
   );
   const topMostThreadInfo = communityThreadInfo || threadInfo;
-  const roleMap = new Map<string, ?MinimallyEncodedRoleInfo>();
+  const roleMap = new Map<string, ?RoleInfo>();
 
   if (topMostThreadInfo.type === threadTypes.GENESIS) {
     memberInfos.forEach(memberInfo =>
diff --git a/lib/utils/thread-ops-utils.js b/lib/utils/thread-ops-utils.js
--- a/lib/utils/thread-ops-utils.js
+++ b/lib/utils/thread-ops-utils.js
@@ -10,7 +10,7 @@
 import type {
   MinimallyEncodedMemberInfo,
   RawThreadInfo,
-  MinimallyEncodedRoleInfo,
+  RoleInfo,
 } from '../types/minimally-encoded-thread-permissions-types.js';
 import {
   decodeMinimallyEncodedRawThreadInfo,
@@ -60,22 +60,20 @@
 
   // 2. Validate and potentially minimally encode `rawRoles`.
   const rawRoles = JSON.parse(clientDBThreadInfo.roles);
-  const minimallyEncodedRoles: { +[id: string]: MinimallyEncodedRoleInfo } =
-    Object.keys(rawRoles).reduce(
-      (acc: { [string]: MinimallyEncodedRoleInfo }, roleID: string) => {
-        const roleInfo = rawRoles[roleID];
-        invariant(
-          minimallyEncodedRoleInfoValidator.is(roleInfo) ||
-            legacyRoleInfoValidator.is(roleInfo),
-          'rawRole must be valid [MinimallyEncoded/Legacy]RoleInfo',
-        );
-        acc[roleID] = roleInfo.minimallyEncoded
-          ? roleInfo
-          : minimallyEncodeRoleInfo(roleInfo);
-        return acc;
-      },
-      {},
+  const minimallyEncodedRoles: { +[id: string]: RoleInfo } = Object.keys(
+    rawRoles,
+  ).reduce((acc: { [string]: RoleInfo }, roleID: string) => {
+    const roleInfo = rawRoles[roleID];
+    invariant(
+      minimallyEncodedRoleInfoValidator.is(roleInfo) ||
+        legacyRoleInfoValidator.is(roleInfo),
+      'rawRole must be valid [MinimallyEncoded/Legacy]RoleInfo',
     );
+    acc[roleID] = roleInfo.minimallyEncoded
+      ? roleInfo
+      : minimallyEncodeRoleInfo(roleInfo);
+    return acc;
+  }, {});
 
   // 3. Validate and potentially minimally encode `rawCurrentUser`.
   const rawCurrentUser = JSON.parse(clientDBThreadInfo.currentUser);