103 lines
3.3 KiB
JavaScript
103 lines
3.3 KiB
JavaScript
import chalk from 'chalk';
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/**
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* Formats the given date for logging
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* @param {Date} date the date to format
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* @returns {string} the formatted date string in yyyy/mm/dd hh/mm/ss/SSS
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*/
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export const time = (date) => {
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/**
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* Stringifies the given number, prepends with 0s if the number string isn't long enough
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* @param {number} num the number to stringify
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* @param {number} expectedLength how long the number should be
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* @returns {string} the stringified number
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*/
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const stringifyNumber = (num, expectedLength) => {
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let str = `${num}`;
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while (str.length < expectedLength) {
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str = `0${str}`;
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}
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return str;
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};
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const year = date.getFullYear()
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const month = stringifyNumber(date.getMonth(), 2);
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const day = stringifyNumber(date.getDay(), 2);
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const hour = stringifyNumber(date.getHours(), 2);
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const minute = stringifyNumber(date.getMinutes(), 2);
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const second = stringifyNumber(date.getSeconds(), 2);
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const millisecond = stringifyNumber(date.getMilliseconds(), 2);
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return `${year}/${month}/${day} ${hour}:${minute}:${second}.${millisecond}`;
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}
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/**
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* Logs a message to the console
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* @param {string} message the message to log
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* @param {'debug'|'info'|'log'|'warn'|'error'} kind the kind of message being logged; denotes logging level
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* - debug is lowest level of message (0)
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* - info is the second lowest level of message (1)
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* - log is the default level level of message (2)
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* - warn is the second highest level of message (3)
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* - error is the highest level of message (4)
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* @param {string} context the context; if undefined, assume part of a parent context and indent the message
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* @param {string} extraData any extra data (e.g. if there was an error, pass the error object here)
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*/
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export const log = (message, kind, context, extraData) => {
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const logLevel = process.env.npm_config_logging || 2;
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const formatted = `${chalk.bold(`[${time(new Date())}] `)}${context ? context + ': ' : ' '}${message}`;
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switch (kind) {
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case 'debug': {
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if (logLevel > 0) {
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return;
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}
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if (extraData) {
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console.debug(`${chalk.gray.bold('[debug]')}${formatted}`, extraData);
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} else {
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console.debug(`${chalk.gray.bold('[debug]')}${formatted}`);
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}
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break;
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}
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case 'info': {
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if (logLevel > 1) {
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return;
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}
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if (extraData) {
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console.info(`${chalk.white.bold('[info]')}${formatted}`, extraData);
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} else {
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console.info(`${chalk.white.bold('[info]')}${formatted}`);
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}
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break;
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}
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case 'warn': {
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if (logLevel > 3) {
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return;
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}
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if (extraData) {
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console.warn(`${chalk.yellow.bold('[warn]')}${formatted}`, extraData);
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} else {
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console.warn(`${chalk.yellow.bold('[warn]')}${formatted}`);
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}
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break;
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}
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case 'error': {
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if (extraData) {
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console.error(`${chalk.red.bold('[error]')}${formatted}`, extraData);
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} else {
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console.error(`${chalk.red.bold('[error]')}${formatted}`);
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}
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break;
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}
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default: {
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if (logLevel > 2) {
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return;
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}
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if (extraData) {
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console.log(`${chalk.blue.bold('[log]')}${formatted}`, extraData);
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} else {
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console.log(`${chalk.blue.bold('[log]')}${formatted}`);
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}
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break;
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}
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}
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};
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