63 lines
1.7 KiB
TypeScript
63 lines
1.7 KiB
TypeScript
import type { transport as Transport } from "winston";
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import winston, { format, transports } from "winston";
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import { env } from "./env";
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import { RedisTransport } from "./redis-transport";
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/**
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* Formats the cause of an error in the format
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* @example caused by Error: {message}
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* {stack-trace}
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* @param cause next cause in the chain
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* @param iteration current iteration of the function
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* @returns formatted and stacked causes
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*/
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const formatCause = (cause: unknown, iteration = 0): string => {
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// Prevent infinite recursion
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if (iteration > 5) {
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return "";
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}
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if (cause instanceof Error) {
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if (!cause.cause) {
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return `\ncaused by ${cause.stack}`;
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}
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return `\ncaused by ${cause.stack}${formatCause(cause.cause, iteration + 1)}`;
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}
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return `\ncaused by ${cause as string}`;
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};
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const logMessageFormat = format.printf(({ level, message, timestamp, cause, stack }) => {
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if (!cause && !stack) {
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return `${timestamp as string} ${level}: ${message as string}`;
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}
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if (!cause) {
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return `${timestamp as string} ${level}: ${message as string}\n${stack as string}`;
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}
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return `${timestamp as string} ${level}: ${message as string}\n${stack as string}${formatCause(cause)}`;
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});
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const logTransports: Transport[] = [new transports.Console()];
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// Only add the Redis transport if we are not in CI
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if (!(Boolean(process.env.CI) || Boolean(process.env.DISABLE_REDIS_LOGS))) {
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logTransports.push(new RedisTransport());
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}
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const logger = winston.createLogger({
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format: format.combine(
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format.colorize(),
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format.timestamp(),
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format.errors({ stack: true, cause: true }),
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logMessageFormat,
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),
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transports: logTransports,
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level: env.LOG_LEVEL,
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});
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export { logger };
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