s3-file-manager/dist/utils/isValidLogger.js

A streamlined, high-level S3 client for Node.js with built-in retries and support for uploads, downloads, and file operations — works with any S3-compatible storage.

/**
 * Type guard to validate a logger implements the Logger interface.
 */
export const isValidLogger = (obj) => {
    if (obj != null &&
        typeof obj.info === "function" &&
        typeof obj.warn === "function" &&
        typeof obj.error === "function") {
        return true;
    }
    else if (obj != null) {
        console.error(`Invalid \`logger\` provided (type: ${typeof obj}); ` +
            `it must have \`info\`, \`warn\`, and \`error\` methods. ` +
            `Using default console logger instead.`);
    }
    return false;
};