@lexamica-modules/logger/lib/formatting.js

The various loggers and transports used for API logging in the Lexamica Eco-system

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.getFormat = exports.requestFormatter = void 0;
const winston_1 = __importDefault(require("winston"));
// have to use any here since morgan does not make its types available
function requestFormatter(tokens, req, res) {
    return JSON.stringify({
        method: tokens.method(req, res),
        url: tokens.url(req, res),
        status_code: Number.parseFloat(tokens.status(req, res)),
        content_length: tokens.res(req, res, 'content-length'),
        response_time: Number.parseFloat(tokens['response-time'](req, res)),
    });
}
exports.requestFormatter = requestFormatter;
function logFormatTemplate(line) {
    const { timestamp = new Date().toISOString(), label = 'logger', ...meta } = line.metadata || line || {};
    const metaEmpty = Object.keys(meta).length === 0 && meta.constructor === Object;
    const metaString = metaEmpty ? '' : JSON.stringify(meta, null, 2);
    return `${timestamp} [${label}] ${line.level}: ${line.message} ${metaString}`;
}
const jsonToString = winston_1.default.format((entry) => {
    const { message } = entry || {};
    if (message instanceof Map || message instanceof Set) {
        entry.message = `Map/Set keys: ${[...message.keys()].join(',')}`;
        return entry;
    }
    else if (typeof message === 'object') {
        entry.message = JSON.stringify(message);
        return entry;
    }
    return entry;
});
const colorFormat = winston_1.default.format.combine(jsonToString(), winston_1.default.format.timestamp(), winston_1.default.format.colorize(), winston_1.default.format.splat(), winston_1.default.format.simple(), winston_1.default.format.metadata(), winston_1.default.format.printf(logFormatTemplate));
const jsonFormat = winston_1.default.format.combine(jsonToString(), winston_1.default.format.timestamp(), winston_1.default.format.splat(), winston_1.default.format.simple(), winston_1.default.format.metadata(), winston_1.default.format.json());
const getFormat = (formatType) => {
    switch (formatType) {
        case 'color':
            return colorFormat;
        case 'json':
        default:
            return jsonFormat;
    }
};
exports.getFormat = getFormat;