homeio

1const ANSI = {
2  reset: "\x1b[0m",
3  red: "\x1b[31m",
4  green: "\x1b[32m",
5  yellow: "\x1b[33m",
6  cyan: "\x1b[36m",
7  gray: "\x1b[90m",
8};
9
10function canUseColor() {
11  if (process.env.NO_COLOR === "1" || process.env.NO_COLOR === "true") return false;
12  return Boolean(process.stdout?.isTTY);
13}
14
15function colorize(text, color) {
16  if (!canUseColor()) return text;
17  return `${color}${text}${ANSI.reset}`;
18}
19
20function safeStringify(value) {
21  try {
22    return JSON.stringify(value);
23  } catch {
24    return '"[unserializable]"';
25  }
26}
27
28function statusGlyph(entry) {
29  if (entry.status === "success") return colorize("✓", ANSI.green);
30  if (entry.status === "error" || entry.level === "error") return colorize("x", ANSI.red);
31  if (entry.level === "warn") return colorize("!", ANSI.yellow);
32  if (entry.status === "start") return colorize(">", ANSI.cyan);
33  return colorize("•", ANSI.gray);
34}
35
36function formatConsoleLine(entry) {
37  const duration = typeof entry.durationMs === "number" ? ` ${entry.durationMs}ms` : "";
38  const request = entry.requestId ? ` req=${entry.requestId}` : "";
39  const message = entry.message ? ` msg=${entry.message}` : "";
40  const meta = entry.meta ? ` meta=${safeStringify(entry.meta)}` : "";
41  const error = entry.error?.message ? ` err=${entry.error.message}` : "";
42  return `${statusGlyph(entry)} ${entry.timestamp} ${entry.layer}.${entry.action} ${entry.status.toUpperCase()}${duration}${request}${message}${meta}${error}`;
43}
44
45function log(payload) {
46  const entry = {
47    timestamp: new Date().toISOString(),
48    runtime: "server",
49    level: payload.level ?? "info",
50    layer: "system",
51    action: payload.action,
52    status: payload.status ?? "info",
53    durationMs: payload.durationMs,
54    requestId: payload.requestId,
55    message: payload.message,
56    meta: payload.meta,
57    error:
58      payload.error instanceof Error
59        ? {
60            name: payload.error.name,
61            message: payload.error.message,
62            stack: payload.error.stack,
63          }
64        : undefined,
65  };
66
67  const line = formatConsoleLine(entry);
68
69  if (entry.level === "error") {
70    console.error(line);
71    return;
72  }
73
74  if (entry.level === "warn") {
75    console.warn(line);
76    return;
77  }
78
79  console.log(line);
80}
81
82export { log };
83