42 lines
1.2 KiB
TypeScript
42 lines
1.2 KiB
TypeScript
import pino, { type Logger } from "pino";
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import { z } from "zod";
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/** Supported structured log levels at the process boundary. */
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export type LogLevel = z.infer<typeof logLevelSchema>;
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const logLevelSchema = z
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.enum(["trace", "debug", "info", "warn", "error", "fatal", "silent"])
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.default("info");
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/** Parse the optional REA_LOG_LEVEL environment variable. */
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export const parseLogLevel = (value: unknown): LogLevel =>
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logLevelSchema.parse(value);
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/** Create a JSON logger whose destination cannot corrupt MCP stdout frames. */
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export const createLogger = (mode: "mcp" | "cli", level: LogLevel): Logger =>
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pino(
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{
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level,
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base: { application: "rea", mode },
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redact: {
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paths: [
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"token",
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"*.token",
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"params",
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"*.params",
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"arguments",
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"*.arguments",
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"environment",
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"*.environment",
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],
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censor: "[Redacted]",
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},
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},
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pino.destination({ dest: mode === "mcp" ? 2 : 1, sync: false }),
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);
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/** Logger used by embedders that have not opted into process output. */
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export const silentLogger = pino({ level: "silent" });
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export type { Logger };
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