44 lines
1.0 KiB
JavaScript
44 lines
1.0 KiB
JavaScript
'use strict';
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const listeners = [];
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// Zero-pad a number in a string.
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// eg. 4 becomes 04 but 17 stays 17.
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function pad(string) {
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string = String(string);
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return (string.length < 2) ? ('0' + string) : string;
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}
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// Compact date representation.
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// eg. 0611093840 for June 11, 9:38:40 UTC.
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function date() {
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const date = new Date();
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return pad(date.getUTCMonth() + 1) +
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pad(date.getUTCDate()) +
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pad(date.getUTCHours()) +
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pad(date.getUTCMinutes()) +
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pad(date.getUTCSeconds());
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}
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module.exports = function log(...msg) {
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const d = date();
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listeners.forEach(f => f(d, ...msg))
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console.log(d, ...msg);
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};
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module.exports.error = function error(...msg) {
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const d = date();
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listeners.forEach(f => f(d, ...msg))
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console.error(d, ...msg);
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};
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module.exports.addListener = function addListener(func) {
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listeners.push(func);
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};
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module.exports.removeListener = function removeListener(func) {
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const index = listeners.indexOf(func);
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if (index < 0) { return; }
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listeners.splice(index, 1);
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};
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