deepseek-ai/deepseek-harness · error

lsp-stdio: servers.${providerId}.${name} must be a positive

Error message

lsp-stdio: servers.${providerId}.${name} must be a positive integer

What it means

Error "lsp-stdio: servers.${providerId}.${name} must be a positive integer" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/lsp/lsp-stdio/src/index.ts:212

  // Byte caps must be positive: a nonpositive stderr cap defeats the retained-tail bound
  // (`slice(-0)` keeps everything), `maxMessageBytes: 0` makes every response fatal, and a bad
  // document cap fails later in the read path instead of at load.
  assertPositiveInteger(providerId, 'maxStderrBytes', resolved.maxStderrBytes)
  assertPositiveInteger(providerId, 'maxMessageBytes', resolved.maxMessageBytes)
  assertPositiveInteger(providerId, 'maxDocumentBytes', resolved.maxDocumentBytes)
}

/** Reject a timer value Node would clamp instead of scheduling as configured. */
function assertTimer(providerId: string, name: string, value: number): void {
  if (!Number.isInteger(value) || value < 1 || value > MAX_TIMER_DELAY_MS) {
    throw new Error(`lsp-stdio: servers.${providerId}.${name} must be a positive integer no greater than ${MAX_TIMER_DELAY_MS}`)
  }
}

/** Reject a nonpositive or non-integer config value at load, so misconfiguration fails loud. */
function assertPositiveInteger(providerId: string, name: string, value: number): void {
  if (!Number.isInteger(value) || value < 1) {
    throw new Error(`lsp-stdio: servers.${providerId}.${name} must be a positive integer`)
  }
}

/** A pooled generic provider: one server process per canonical workspace, created on demand. */
class LocalLspProvider implements LspProvider {
  readonly id: LspProviderId
  readonly extensionToLanguage: Readonly<Record<string, string>>
  /** One live instance per stable canonical workspace identity. */
  private readonly instances = new Map<WorkspaceKey, LspInstance>()
  /** One complete source-read→open→query→close serialization tail per canonical workspace. */
  private readonly queues = new Map<WorkspaceKey, Promise<void>>()
  /** Workspace canonicalizations that have not entered a provider-owned queue yet. */
  private readonly workspaceLookups = new Set<Promise<void>>()
  private readonly lifetime = new AbortController()
  private disposed = false

  constructor(
    providerId: string,

View on GitHub (pinned to b150a551b8)

Solutions

1. Set the value to a positive integer.

When it happens

Trigger: Thrown at packages/lsp/lsp-stdio/src/index.ts:212 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/86ecb6e84f7fda17. Report an issue: GitHub.