@dotenvc/async-await/dist/index.js

A minimal utility for Go-style error handling in async/await TypeScript code. Includes retries, custom error handling, and optional logging.

export async function to(promiseFactory, options = {}) {
    const { label = '', retries = 0, delayMs = 100, logger, errorParser = (err) => (err instanceof Error ? err : new Error(String(err))), } = options;
    let attempt = 0;
    while (attempt <= retries) {
        try {
            const result = await promiseFactory();
            return [null, result];
        }
        catch (err) {
            const parsedError = errorParser(err);
            if (attempt < retries) {
                if (logger)
                    logger(`[Retry ${attempt + 1}/${retries}] ${label}`, parsedError);
                await new Promise(res => setTimeout(res, delayMs));
            }
            else {
                if (logger)
                    logger(`[Error] ${label}`, parsedError);
                return [parsedError, null];
            }
        }
        attempt++;
    }
    return [new Error('Unknown failure'), null];
}