xmpp.chapril.org-conversejs/src/headless/log.js

98 lines
2.9 KiB
JavaScript

import { isElement } from 'lodash-es';
const LEVELS = {
'debug': 0,
'info': 1,
'warn': 2,
'error': 3,
'fatal': 4
}
const logger = Object.assign({
'debug': console?.log ? console.log.bind(console) : function noop () {},
'error': console?.log ? console.log.bind(console) : function noop () {},
'info': console?.log ? console.log.bind(console) : function noop () {},
'warn': console?.log ? console.log.bind(console) : function noop () {}
}, console);
/**
* The log namespace
* @namespace log
*/
const log = {
/**
* The the log-level, which determines how verbose the logging is.
* @method log#setLogLevel
* @param { integer } level - The loglevel which allows for filtering of log messages
*/
setLogLevel (level) {
if (!['debug', 'info', 'warn', 'error', 'fatal'].includes(level)) {
throw new Error(`Invalid loglevel: ${level}`);
}
this.loglevel = level;
},
/**
* Logs messages to the browser's developer console.
* Available loglevels are 0 for 'debug', 1 for 'info', 2 for 'warn',
* 3 for 'error' and 4 for 'fatal'.
* When using the 'error' or 'warn' loglevels, a full stacktrace will be
* logged as well.
* @method log#log
* @param { string } message - The message to be logged
* @param { integer } level - The loglevel which allows for filtering of log messages
*/
log (message, level, style='') {
if (LEVELS[level] < LEVELS[this.loglevel]) {
return;
}
if (level === 'error' || level === 'fatal') {
style = style || 'color: maroon';
} else if (level === 'debug') {
style = style || 'color: green';
}
if (message instanceof Error) {
message = message.stack;
} else if (isElement(message)) {
message = message.outerHTML;
}
const prefix = style ? '%c' : '';
if (level === 'error') {
logger.error(`${prefix} ERROR: ${message}`, style);
} else if (level === 'warn') {
logger.warn(`${prefix} ${(new Date()).toISOString()} WARNING: ${message}`, style);
} else if (level === 'fatal') {
logger.error(`${prefix} FATAL: ${message}`, style);
} else if (level === 'debug') {
logger.debug(`${prefix} ${(new Date()).toISOString()} DEBUG: ${message}`, style);
} else {
logger.info(`${prefix} ${(new Date()).toISOString()} INFO: ${message}`, style);
}
},
debug (message, style) {
this.log(message, 'debug', style);
},
error (message, style) {
this.log(message, 'error', style);
},
info (message, style) {
this.log(message, 'info', style);
},
warn (message, style) {
this.log(message, 'warn', style);
},
fatal (message, style) {
this.log(message, 'fatal', style);
}
}
export default log;