24 lines
769 B
TypeScript
24 lines
769 B
TypeScript
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type Level = "info" | "warn" | "error";
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function emit(level: Level, scope: string, msg: string, extra?: unknown): void {
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const ts = new Date().toISOString();
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const line = `${ts} [${level.toUpperCase()}] (${scope}) ${msg}`;
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if (level === "error") {
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console.error(line, extra ?? "");
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} else if (level === "warn") {
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console.warn(line, extra ?? "");
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} else {
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console.log(line, extra ?? "");
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}
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}
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export function createLogger(scope: string) {
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return {
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info: (msg: string, extra?: unknown) => emit("info", scope, msg, extra),
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warn: (msg: string, extra?: unknown) => emit("warn", scope, msg, extra),
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error: (msg: string, extra?: unknown) => emit("error", scope, msg, extra),
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};
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}
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export type Logger = ReturnType<typeof createLogger>;
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