Intlayer

/** * Extracts the first JSON value (object or array) from a string. * Returns the parsed value, or throws if no valid JSON is found. */ export const extractJson = <T = any>(input: string): T => { const opening = input.match(/[{[]/); if (!opening) throw new Error('No JSON start character ({ or [) found.'); const startIdx = opening.index!; const openChar = input[startIdx]; const closeChar = openChar === '{' ? '}' : ']'; let depth = 0; for (let i = startIdx; i < input.length; i++) { const char = input[i]; if (char === openChar) depth++; else if (char === closeChar) { depth--; if (depth === 0) { const jsonSubstring = input.slice(startIdx, i + 1); try { return JSON.parse(jsonSubstring) as T; } catch (err) { throw new Error(`Failed to parse JSON: ${(err as Error).message}`); } } } } throw new Error('Reached end of input without closing JSON bracket.'); };