92 lines
2 KiB
JavaScript
Executable file
92 lines
2 KiB
JavaScript
Executable file
'use strict';
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/* global window: true */
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/* eslint-disable
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multiline-ternary,
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no-param-reassign
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*/
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const PrefixFactory = require('./PrefixFactory');
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const MethodFactory = require('./MethodFactory');
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const defaults = {
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name: +new Date(),
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level: 'warn',
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prefix: null,
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factory: null
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};
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class LogLevel {
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constructor(options) {
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// implement for some _very_ loose type checking. avoids getting into a
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// circular require between MethodFactory and LogLevel
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this.type = 'LogLevel';
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this.options = Object.assign({}, defaults, options);
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this.methodFactory = options.factory;
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if (!this.methodFactory) {
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const factory = options.prefix
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? new PrefixFactory(this, options.prefix)
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: new MethodFactory(this);
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this.methodFactory = factory;
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}
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if (!this.methodFactory.logger) {
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this.methodFactory.logger = this;
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}
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this.name = options.name || '<unknown>';
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// this.level is a setter, do this after setting up the factory
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this.level = this.options.level;
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}
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get factory() {
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return this.methodFactory;
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}
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set factory(factory) {
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factory.logger = this;
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this.methodFactory = factory;
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this.methodFactory.replaceMethods(this.level);
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}
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enable() {
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this.level = this.levels.TRACE;
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}
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disable() {
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this.level = this.levels.SILENT;
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}
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get level() {
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return this.currentLevel;
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}
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set level(logLevel) {
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const level = this.methodFactory.distillLevel(logLevel);
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if (level == null) {
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throw new Error(
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`loglevel: setLevel() called with invalid level: ${logLevel}`
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);
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}
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this.currentLevel = level;
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this.methodFactory.replaceMethods(level);
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if (typeof console === 'undefined' && level < this.levels.SILENT) {
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// eslint-disable-next-line no-console
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console.warn(
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'loglevel: console is undefined. The log will produce no output'
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);
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}
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}
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get levels() { // eslint-disable-line class-methods-use-this
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return this.methodFactory.levels;
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}
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}
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module.exports = LogLevel;
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