function parseAt parseAt(at: string | null): { file: string; line: number; col: number; } | null Splits an at string (path:line:col) into parts; returns null when it isn't a location. parseAt('lib/math.ts:4:12'); // { file: 'lib/math.ts', line: 4, col: 12 } parseAt('not a location'); // null Parameters at: string | null Return Type { file: string; line: number; col: number; } | null