deepseek-ai/deepseek-harness · error · LspError

LSP_MALFORMED_RESPONSE

LSP_MALFORMED_RESPONSE

Error message

LSP navigation result was missing

What it means

Error "LSP navigation result was missing" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/lsp/lsp-stdio/src/translate.ts:148

  const position = value as Record<string, unknown>
  return isProtocolCoordinate(position.line) && isProtocolCoordinate(position.character)
}

/** Whether a wire coordinate is a valid nonnegative integer. */
function isProtocolCoordinate(value: unknown): value is number {
  return typeof value === 'number' && Number.isInteger(value) && value >= 0
}

/**
 * Normalize a navigation result (`Location`, `Location[]`, `LocationLink[]`, or `null`) to the seam's
 * locations. `Location` maps directly; `LocationLink` maps `targetUri` + `targetSelectionRange`.
 * @param payload - the raw `textDocument/definition|references|implementation` result.
 * @returns the normalized locations (empty for `null`/`[]`).
 * @throws Error when an element is neither a `Location` nor a `LocationLink`.
 */
export function normalizeLocations(payload: unknown): LspLocation[] {
  if (payload === null) return []
  if (payload === undefined) throw malformedResponse('LSP navigation result was missing')
  const elements = Array.isArray(payload) ? payload : [payload]
  const locations: LspLocation[] = []
  for (const element of elements) {
    if (element === null || typeof element !== 'object') {
      throw malformedResponse('LSP navigation result contained a non-object entry')
    }
    const record = element as Record<string, unknown>
    if (isLocationLink(record)) {
      const link = record as unknown as WireLocationLink
      locations.push({ uri: link.targetUri, range: toRange(link.targetSelectionRange) })
    } else if (isLocation(record)) {
      const location = record as unknown as WireLocation
      locations.push({ uri: location.uri, range: toRange(location.range) })
    } else {
      throw malformedResponse('LSP navigation result contained neither a Location nor a LocationLink')
    }
  }
  return locations

View on GitHub (pinned to b150a551b8)

Solutions

1. Retry the navigation query; the language server returned no result for the position.

When it happens

Trigger: Thrown at packages/lsp/lsp-stdio/src/translate.ts:148 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of deepseek-ai/deepseek-harness@b150a551b8 (2026-08-24). Data as JSON: /api/errors/ca47bf649cf602d6. Report an issue: GitHub.