var slice = Array.prototype.slice;
/**
* RFC 5424 syslog severity levels, see
* https://tools.ietf.org/html/rfc5424#section-6.2.1
*/
var levels = [
'emergency',
'alert',
'critical',
'error',
'warning',
'notice',
'info',
'debug'
];
var levelsByName = levels.reduce(function(out, name, index) {
out[name] = index;
return out;
}, {});
function normalizeLogLevel(level) {
if (typeof level === 'string') {
level = levelsByName[level];
}
if (typeof level === 'number' && level >= 0 && level < levels.length) {
return level;
}
return false;
}
function ConsoleLogger(_console, maxLevel, defaultLevel) {
_console = _console || console;
maxLevel = normalizeLogLevel(maxLevel) || 6;
defaultLevel = normalizeLogLevel(defaultLevel) || 6;
return {
log: function(level, message) {
var normalizedLevel = normalizeLogLevel(level);
Iif (!normalizedLevel) {
message = level;
normalizedLevel = defaultLevel;
}
var levelName = levels[normalizedLevel];
if (normalizedLevel <= maxLevel) {
_console.log.apply(
_console,
[levelName + ': ' + message].concat(slice.call(arguments, 2))
);
}
}
};
}
ConsoleLogger.LogLevels = levelsByName;
module.exports = ConsoleLogger;
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