Merge branch 'develop' into mahjong

packages/misskey-js/src/api.ts

@@ -17,7 +17,7 @@ export type APIError = {
 	info: Record<string, any>;
 };
 
-export function isAPIError(reason: any): reason is APIError {
+export function isAPIError(reason: Record<PropertyKey, unknown>): reason is APIError {
 	return reason[MK_API_ERROR] === true;
 }
 

packages/misskey-js/src/api.types.ts

@@ -15,10 +15,10 @@ type Overwrite<T, U extends { [Key in keyof T]?: unknown }> = Omit<
 	keyof U
 > & U;
 
-type SwitchCase = {
+type SwitchCase<Condition = unknown, Result = unknown> = {
 	$switch: {
-		$cases: [any, any][],
-		$default: any;
+		$cases: [Condition, Result][],
+		$default: Result;
 	};
 };