swaf/src/Logger.ts

import {AsyncLocalStorage} from "async_hooks";
import {RequestHandler} from "express";
import {nanoid} from "nanoid";
import {Logger as TsLogger} from "tslog";

const requestIdStorage: AsyncLocalStorage<string> = new AsyncLocalStorage();

export const logger = new TsLogger({
    requestId: (): string => {
        return requestIdStorage.getStore() as string;
    },
    delimiter: '\t',
    maskValuesOfKeys: [
        'Authorization',
        'password',
        'password_confirmation',
        'secret',
    ],
    displayFunctionName: false,
    displayFilePath: 'hidden',
});

export const loggingContextMiddleware: RequestHandler = (req, res, next) => {
    requestIdStorage.run(nanoid(8), () => {
        next();
    });
};

export const preventContextCorruptionMiddleware = (delegate: RequestHandler): RequestHandler => (
    req,
    res,
    next,
) => {
    const data = requestIdStorage.getStore() as string;

    delegate(req, res, (err?: unknown | 'router') => {
        requestIdStorage.enterWith(data);
        next(err);
    });
};