90b9cf93d8
- Added @eslint/js dependency - Updated eslint.config.js for ESLint 9 compatibility - Added required globals (crypto, localStorage, React, etc.) - Fixed unused imports and variables - Disabled sort-imports temporarily - Formatted all files with Prettier
84 lines
2.4 KiB
TypeScript
84 lines
2.4 KiB
TypeScript
import type { LogLevel, LogPayload, Logger, LoggerConfig } from './types.js';
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function formatPayload(
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service: string,
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level: LogLevel,
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message: string,
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error?: unknown,
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extra?: Record<string, unknown>
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): LogPayload {
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const payload: LogPayload = {
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level,
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message,
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timestamp: new Date().toISOString(),
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service,
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...extra,
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};
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if (error instanceof Error) {
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payload.error = error.message;
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payload.stack = error.stack;
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} else if (error !== undefined) {
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payload.error = String(error);
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}
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return payload;
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}
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function emit(payload: LogPayload, isDev: boolean): void {
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if (isDev) {
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const { level, message, error: err, ...rest } = payload;
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const prefix = `[${level.toUpperCase()}]`;
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const extras = Object.keys(rest).length > 2 ? ` ${JSON.stringify(rest)}` : '';
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const errStr = err ? ` — ${err}` : '';
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if (level === 'error' || level === 'warn') {
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// eslint-disable-next-line no-console
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console.error(`${prefix} ${message}${errStr}${extras}`);
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} else {
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// eslint-disable-next-line no-console
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console.log(`${prefix} ${message}${extras}`);
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}
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} else {
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const out = JSON.stringify(payload);
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if (payload.level === 'error' || payload.level === 'warn') {
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process.stderr.write(out + '\n');
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} else {
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process.stdout.write(out + '\n');
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}
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}
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}
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/**
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* Create a structured logger for a service or dashboard.
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*
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* @example
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* ```ts
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* import { createLogger } from "@bytelyst/logger";
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* const log = createLogger({ service: "admin-dashboard" });
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* log.error("Login failed", error, { userId });
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* log.info("Seed complete", { containers: 8 });
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* ```
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*/
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export function createLogger(config: LoggerConfig): Logger {
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const { service } = config;
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const isDev = config.isDev ?? process.env.NODE_ENV !== 'production';
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return {
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error(message: string, error?: unknown, extra?: Record<string, unknown>): void {
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emit(formatPayload(service, 'error', message, error, extra), isDev);
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},
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warn(message: string, extra?: Record<string, unknown>): void {
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emit(formatPayload(service, 'warn', message, undefined, extra), isDev);
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},
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info(message: string, extra?: Record<string, unknown>): void {
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emit(formatPayload(service, 'info', message, undefined, extra), isDev);
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},
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debug(message: string, extra?: Record<string, unknown>): void {
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if (isDev) {
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emit(formatPayload(service, 'debug', message, undefined, extra), isDev);
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}
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},
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};
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}
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