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9 changes: 8 additions & 1 deletion src/loggingDatabaseOperations.ts
Original file line number Diff line number Diff line change
Expand Up @@ -57,14 +57,21 @@ export class LoggingDatabaseOperations implements DatabaseOperations {

// Constrain T to only callable (function) members of DatabaseOperations,
// excluding non-function properties like `engineKind` (which is a Promise).
// eslint-disable-next-line @typescript-eslint/no-explicit-any
private async logAndDelegate<T extends { [K in keyof DatabaseOperations]: DatabaseOperations[K] extends (...args: any) => any ? K : never }[keyof DatabaseOperations]>(
message: string,
isWrite: boolean,
method: T,
// eslint-disable-next-line @typescript-eslint/no-explicit-any
...args: Parameters<Extract<DatabaseOperations[T], (...args: any) => any>>
// eslint-disable-next-line @typescript-eslint/no-explicit-any
): Promise<ReturnType<Extract<DatabaseOperations[T], (...args: any) => any>>> {
this.log(message, isWrite);
return (this.wrapped[method] as any)(...args);

// eslint-disable-next-line @typescript-eslint/no-explicit-any
type AnyFunc = Extract<DatabaseOperations[T], (...args: any) => any>;
const targetMethod = this.wrapped[method] as unknown as (...args: Parameters<AnyFunc>) => ReturnType<AnyFunc>;
return targetMethod(...args);
}

private log(message: string, isWrite: boolean = false) {
Expand Down