np-express-winston-logger/dist/logger.js

A TypeScript logger for Express using Winston and Elasticsearch

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.createLogger = createLogger;
const winston_1 = require("winston");
const context_1 = require("./context");
const http_logger_1 = require("./http-logger");
const sanitizer_1 = require("./sanitizer");
const transports_1 = require("./transports");
const log_level_1 = require("./types/log-level");
function createLogger({ serviceName, minLevel = log_level_1.LogLevel.SILLY, enableConsole = true, env = "dev", sanitize, elasticsearch, }) {
    const transportsList = [];
    if (enableConsole) {
        transportsList.push((0, transports_1.createConsoleTransport)(minLevel));
    }
    if (elasticsearch) {
        transportsList.push((0, transports_1.createElasticsearchTransport)({
            minLevel,
            url: elasticsearch.url,
            serviceName,
        }));
    }
    const formatOptions = winston_1.format.combine((0, winston_1.format)((log) => {
        if (log.env === "prod" &&
            [log_level_1.LogLevel.DEBUG, log_level_1.LogLevel.VERBOSE].includes(log.level)) {
            return false;
        }
        const splat = log[Symbol.for("splat")];
        if (sanitize) {
            const extraFields = sanitize.sensitiveFields;
            if (log.meta)
                log.meta = (0, sanitizer_1.sanitizeData)(log.meta, extraFields);
            if (splat?.length) {
                log[Symbol.for("splat")] = splat.map((item) => typeof item === "object" ? (0, sanitizer_1.sanitizeData)(item, extraFields) : item);
            }
        }
        return log;
    })(), (0, winston_1.format)((log) => (true ? (0, context_1.injectRequestId)(log) : log))(), winston_1.format.timestamp({ format: () => new Date().toISOString() }), winston_1.format.errors({ stack: true }), winston_1.format.splat(), winston_1.format.json());
    const logger = (0, winston_1.createLogger)({
        level: minLevel,
        defaultMeta: { service: serviceName, env },
        transports: transportsList,
        format: formatOptions,
    });
    const httpLogger = (0, http_logger_1.createHttpLogger)(logger);
    return { logger, httpLogger };
}
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