Function parseSystemLogLine

Parses a single line of a system log into a structured SystemLogLine object.

The function expects the log line to follow the format:

YYYY-MM-DD HH:MM:SS.sss (uptime) [id]file:linelevel|message

where the id part is optional.

Returns

A SystemLogLine object with parsed fields, or undefined if the line cannot be parsed.

Example

const line = '2025-12-05 10:01:23.123 (12:34:56) [device1]main.ts:123INFO|Started';
const parsed = parseSystemLogLine(line);
console.log(parsed?.date);    // → Date object for '2025-12-05 10:01:23.123'
console.log(parsed?.uptime);  // → '12:34:56'
console.log(parsed?.id);      // → 'device1'
console.log(parsed?.message); // → 'Started'

Remarks

• Uses a regular expression with the s (dotAll) flag; this may not be supported in all browsers.
• If parsing fails, the function returns undefined.
• The returned object includes the original line for reference.