logger.js•1.88 kB
/**
* @license
* Copyright 2025 Aeven
* SPDX-License-Identifier: Apache-2.0
*/
import { format as formatLog } from "node:util";
const LEVEL_ORDER = {
silent: 0,
error: 1,
warn: 2,
info: 3,
debug: 4,
};
const normalizeLevel = (level) => {
if (!level) {
return null;
}
const normalized = level.toLowerCase();
return normalized in LEVEL_ORDER ? normalized : null;
};
const envLevel = normalizeLevel(process.env.NANOBANANA_LOG_LEVEL) ??
normalizeLevel(process.env.LOG_LEVEL);
let currentLevel = envLevel ?? "error";
const levelExplicitlySet = envLevel !== null;
const shouldLog = (level) => {
return LEVEL_ORDER[level] <= LEVEL_ORDER[currentLevel];
};
const writeToConsole = (level, line) => {
switch (level) {
case "error":
console.error(line);
break;
case "warn":
console.warn(line);
break;
case "info":
console.log(line);
break;
case "debug":
console.debug(line);
break;
default:
console.log(line);
}
};
const output = (level, args) => {
if (!shouldLog(level)) {
return;
}
const message = formatLog(...args);
const timestamp = new Date().toISOString();
const line = `[${timestamp}] [${level.toUpperCase()}] ${message}`;
writeToConsole(level, line);
};
export const logger = {
getLevel() {
return currentLevel;
},
setLevel(level) {
currentLevel = level;
},
setDefaultLevel(level) {
if (!levelExplicitlySet) {
currentLevel = level;
}
},
error(...args) {
output("error", args);
},
warn(...args) {
output("warn", args);
},
info(...args) {
output("info", args);
},
debug(...args) {
output("debug", args);
},
};