Function readEditContext

src/utils/readEditContext.ts:31–43

(
  path: string,
  needle: string,
  contextLines = 3,
)

 * needle isn't found within MAX_SCAN_BYTES.
 */
export async function readEditContext(
  path: string,
  needle: string,
  contextLines = 3,
): Promise<EditContext | null> {
  const handle = await openForScan(path)
  if (handle === null) return null
  try {
    return await scanForContext(handle, needle, contextLines)
  } finally {
    await handle.close()
  }
}

/**
 * Opens `path` for reading. Returns null on ENOENT. Caller owns close().