chore(types): fewer any casts; eslint warning ratchet 36 -> 29 (#210)

- Developer tools (send event, state event editor, room account data) and
  setMarkedUnread go through the typed helpers in utils/room and
  utils/accountData (new setRoomAccountData) instead of casting at the
  call site; sendStateEvent accepts a developer-chosen type string.
- SecretStorage passes the key description as the SDK's
  SecretStorageKeyDescription, CallEmbed replies with an IWidgetApiRequest,
  and fillMissingPowers writes through a Record instead of `as any`.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017PCb59uY3UKqDqt7B6hzd5

package.json

@@ -12,7 +12,7 @@
     "build": "vite build",
     "preview": "vite preview",
     "lint": "npm run check:eslint && npm run check:prettier",
-    "check:eslint": "eslint src/* --max-warnings 36",
+    "check:eslint": "eslint src/* --max-warnings 29",
     "check:prettier": "prettier --check .",
     "fix:prettier": "prettier --write .",
     "typecheck": "tsc --noEmit",

src/app/components/SecretStorage.tsx

@@ -1,6 +1,7 @@
 import React, { FormEventHandler, useCallback } from 'react';
 import { Box, Text, Button, Spinner, color } from 'folds';
 import { decodeRecoveryKey, deriveRecoveryKeyFromPassphrase } from 'matrix-js-sdk/lib/crypto-api';
+import type { SecretStorageKeyDescription } from 'matrix-js-sdk/lib/secret-storage';
 import { PasswordInput } from './password-input';
 import {
   SecretStorageKeyContent,
@@ -39,7 +40,10 @@ export function SecretStorageRecoveryPassphrase({
           bits,
         );
 
-        const match = await mx.secretStorage.checkKey(decodedRecoveryKey, keyContent as any);
+        const match = await mx.secretStorage.checkKey(
+          decodedRecoveryKey,
+          keyContent as SecretStorageKeyDescription,
+        );
 
         if (!match) {
           throw new Error('Invalid recovery passphrase.');
@@ -132,7 +136,10 @@ export function SecretStorageRecoveryKey({
       async (recoveryKey) => {
         const decodedRecoveryKey = decodeRecoveryKey(recoveryKey);
 
-        const match = await mx.secretStorage.checkKey(decodedRecoveryKey, keyContent as any);
+        const match = await mx.secretStorage.checkKey(
+          decodedRecoveryKey,
+          keyContent as SecretStorageKeyDescription,
+        );
 
         if (!match) {
           throw new Error('Invalid recovery key.');

src/app/features/common-settings/developer-tools/DevelopTools.tsx

@@ -30,6 +30,7 @@ import {
   AccountDataSubmitCallback,
 } from '../../../components/AccountDataEditor';
 import { useMatrixClient } from '../../../hooks/useMatrixClient';
+import { setRoomAccountData } from '../../../utils/accountData';
 
 type DeveloperToolsProps = {
   requestClose: () => void;
@@ -58,8 +59,7 @@ export function DeveloperTools({ requestClose }: DeveloperToolsProps) {
 
   const submitAccountData: AccountDataSubmitCallback = useCallback(
     async (type, content) => {
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any
-      await mx.setRoomAccountData(room.roomId, type as any, content);
+      await setRoomAccountData(mx, room.roomId, type, content);
     },
     [mx, room.roomId],
   );

src/app/features/common-settings/developer-tools/SendRoomEvent.tsx

@@ -1,5 +1,5 @@
 import React, { useCallback, useRef, useState, FormEventHandler, useEffect } from 'react';
-import { MatrixError } from 'matrix-js-sdk';
+import { IContent, MatrixError } from 'matrix-js-sdk';
 import {
   Box,
   Chip,
@@ -22,6 +22,7 @@ import { useTextAreaCodeEditor } from '../../../hooks/useTextAreaCodeEditor';
 import { AsyncStatus, useAsyncCallback } from '../../../hooks/useAsyncCallback';
 import { syntaxErrorPosition } from '../../../utils/dom';
 import { Cursor } from '../../../plugins/text-area';
+import { sendRoomEvent, sendStateEvent } from '../../../utils/room';
 
 const EDITOR_INTENT_SPACE_COUNT = 2;
 
@@ -51,9 +52,9 @@ export function SendRoomEvent({ type, stateKey, requestClose }: SendRoomEventPro
     useCallback(
       (evtType, evtStateKey, evtContent) => {
         if (typeof evtStateKey === 'string') {
-          return mx.sendStateEvent(room.roomId, evtType as any, evtContent, evtStateKey);
+          return sendStateEvent(mx, room.roomId, evtType, evtContent, evtStateKey);
         }
-        return mx.sendEvent(room.roomId, evtType as any, evtContent);
+        return sendRoomEvent(mx, room.roomId, null, evtType, evtContent as IContent);
       },
       [mx, room],
     ),

src/app/features/common-settings/developer-tools/StateEventEditor.tsx

@@ -31,6 +31,7 @@ import { usePowerLevels } from '../../../hooks/usePowerLevels';
 import { useTextAreaCodeEditor } from '../../../hooks/useTextAreaCodeEditor';
 import { useRoomCreators } from '../../../hooks/useRoomCreators';
 import { useRoomPermissions } from '../../../hooks/useRoomPermissions';
+import { sendStateEvent } from '../../../utils/room';
 
 const EDITOR_INTENT_SPACE_COUNT = 2;
 
@@ -59,7 +60,7 @@ function StateEventEdit({ type, stateKey, content, requestClose }: StateEventEdi
 
   const [submitState, submit] = useAsyncCallback<object, MatrixError, [object]>(
     useCallback(
-      (c) => mx.sendStateEvent(room.roomId, type as any, c, stateKey),
+      (c) => sendStateEvent(mx, room.roomId, type, c, stateKey),
       [mx, room, type, stateKey],
     ),
   );

src/app/hooks/usePowerLevels.ts

@@ -46,7 +46,7 @@ const fillMissingPowers = (powerLevels: IPowerLevels): IPowerLevels =>
     const keys = Object.keys(DEFAULT_POWER_LEVELS) as unknown as (keyof IPowerLevels)[];
     keys.forEach((key) => {
       if (draftPl[key] === undefined) {
-        draftPl[key] = DEFAULT_POWER_LEVELS[key] as any;
+        (draftPl as Record<string, unknown>)[key] = DEFAULT_POWER_LEVELS[key];
       }
     });
     if (draftPl.notifications && typeof draftPl.notifications.room !== 'number') {

src/app/plugins/call/CallEmbed.ts

@@ -15,6 +15,7 @@ import {
   WidgetApiFromWidgetAction,
   WidgetApiToWidgetAction,
   WidgetDriver,
+  IWidgetApiRequest,
 } from 'matrix-widget-api';
 import { CallWidgetDriver } from './CallWidgetDriver';
 import { trimTrailingSlash } from '../../utils/common';
@@ -796,7 +797,7 @@ export class CallEmbed {
     const wrapped = (ev: CustomEvent<T>) => {
       ev.preventDefault();
       // Reply with success so the widget transport doesn't time out waiting for a response
-      this.call.transport.reply(ev.detail as any, {});
+      this.call.transport.reply(ev.detail as unknown as IWidgetApiRequest, {});
       callback(ev);
     };
     return this.listenEvent(`action:${type}`, wrapped);

src/app/state/room/markedUnread.ts

@@ -2,6 +2,7 @@ import { atom, useSetAtom } from 'jotai';
 import { MatrixClient, MatrixEvent, Room, RoomEvent, RoomEventHandlerMap } from 'matrix-js-sdk';
 import { useEffect } from 'react';
 import { AccountDataEvent } from '../../../types/matrix/accountData';
+import { setRoomAccountData } from '../../utils/accountData';
 
 // MSC2867 — "mark a room as unread". A per-room account-data flag `{ unread }`.
 // Stable type `m.marked_unread`; servers/clients predating the stabilization use
@@ -25,11 +26,9 @@ export const setMarkedUnread = (
   unread: boolean,
 ): Promise<unknown> =>
   Promise.all([
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any
-    mx.setRoomAccountData(roomId, AccountDataEvent.MarkedUnread as any, { unread }),
+    setRoomAccountData(mx, roomId, AccountDataEvent.MarkedUnread, { unread }),
     // Best-effort mirror for older servers; never fail the primary write on it.
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any
-    mx.setRoomAccountData(roomId, UNSTABLE_MARKED_UNREAD as any, { unread }).catch(() => undefined),
+    setRoomAccountData(mx, roomId, UNSTABLE_MARKED_UNREAD, { unread }).catch(() => undefined),
   ]);
 
 export const receiptIsMine = (event: MatrixEvent, userId: string): boolean => {

src/app/utils/accountData.ts

@@ -18,6 +18,17 @@ export function getAccountData<T>(
   return event?.getContent() as T | undefined;
 }
 
+/** Room account data under a custom or developer-chosen type (same cast). */
+export function setRoomAccountData<T>(
+  mx: MatrixClient,
+  roomId: string,
+  eventType: string,
+  content: T,
+): Promise<unknown> {
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  return (mx as any).setRoomAccountData(roomId, eventType, content);
+}
+
 export function setAccountData<T>(
   mx: MatrixClient,
   eventType: AccountDataEvent | string,

src/app/utils/room.ts

@@ -60,7 +60,7 @@ export const getStateEvents = (room: Room, eventType: StateEvent): MatrixEvent[]
 export function sendStateEvent<T extends object>(
   mx: MatrixClient,
   roomId: string,
-  eventType: StateEvent,
+  eventType: StateEvent | string,
   content: T,
   stateKey = '',
 ): Promise<ISendEventResponse> {