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logger.js
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logger.js
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function noop() {}
const fakeLogger = {
trace: noop,
debug: noop,
log: noop,
warn: noop,
info: noop,
error: noop
};
let exportedLogger = fakeLogger;
/*globals self: false */
//let lastCallTime;
// function formatMsgWithTimeInfo(type, msg) {
// const now = Date.now();
// const diff = lastCallTime ? '+' + (now - lastCallTime) : '0';
// lastCallTime = now;
// msg = (new Date(now)).toISOString() + ' | [' + type + '] > ' + msg + ' ( ' + diff + ' ms )';
// return msg;
// }
function formatMsg(type, msg) {
msg = '[' + type + '] > ' + msg;
return msg;
}
function consolePrintFn(type) {
const func = self.console[type];
if (func) {
return function(...args) {
if(args[0]) {
args[0] = formatMsg(type, args[0]);
}
func.apply(self.console, args);
};
}
return noop;
}
function exportLoggerFunctions(debugConfig, ...functions) {
functions.forEach(function(type) {
exportedLogger[type] = debugConfig[type] ? debugConfig[type].bind(debugConfig) : consolePrintFn(type);
});
}
export var enableLogs = function(debugConfig) {
if (debugConfig === true || typeof debugConfig === 'object') {
exportLoggerFunctions(debugConfig,
// Remove out from list here to hard-disable a log-level
//'trace',
'debug',
'log',
'info',
'warn',
'error'
);
// Some browsers don't allow to use bind on console object anyway
// fallback to default if needed
try {
exportedLogger.log();
} catch (e) {
exportedLogger = fakeLogger;
}
}
else {
exportedLogger = fakeLogger;
}
};
export var logger = exportedLogger;