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| export function truncateText(value: string, maxLength = 12_000): string { | |
| if (value.length <= maxLength) { | |
| return value; | |
| } | |
| return `${value.slice(0, maxLength)}\n...[truncated ${value.length - maxLength} chars]`; | |
| } | |
| export function extractJsonObject(text: string): unknown { | |
| const trimmed = text.trim(); | |
| if (trimmed.startsWith("{") && trimmed.endsWith("}")) { | |
| return JSON.parse(trimmed) as unknown; | |
| } | |
| const fenced = trimmed.match(/```(?:json)?\s*([\s\S]*?)```/); | |
| if (fenced?.[1]) { | |
| return JSON.parse(fenced[1]) as unknown; | |
| } | |
| const start = trimmed.indexOf("{"); | |
| const end = trimmed.lastIndexOf("}"); | |
| if (start >= 0 && end > start) { | |
| return JSON.parse(trimmed.slice(start, end + 1)) as unknown; | |
| } | |
| throw new Error("No JSON object found in text."); | |
| } | |