client-modules: ${pkgName} exports["./client"] must be a str

Error message

client-modules: ${pkgName} exports["./client"] must be a string or an object with a string default

What it means

Error "client-modules: ${pkgName} exports["./client"] must be a string or an object with a string default" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/client/modules/src/index.ts:158

  return {
    platform: decl.platform,
    ...(inject !== undefined ? { inject } : {}),
    ...(external !== undefined ? { external } : {}),
    ...(decl.immediately !== undefined ? { immediately: decl.immediately } : {}),
  }
}

/** Resolve `exports["./client"]` to a relative path, accepting the string and one-level conditional forms. */
function clientExportOf(pkgName: string, exportsField: unknown): string | undefined {
  if (typeof exportsField !== 'object' || exportsField === null) return undefined
  const client = (exportsField as Record<string, unknown>)['./client']
  if (client === undefined) return undefined
  if (typeof client === 'string') return client
  if (typeof client === 'object' && client !== null) {
    const fallback = (client as Record<string, unknown>).default
    if (typeof fallback === 'string') return fallback
  }
  throw new Error(`client-modules: ${pkgName} exports["./client"] must be a string or an object with a string default`)
}

/** sha1 content hash shortened to 12 hex chars (bundle rev / graph rev). */
function shortHash(input: string | Buffer): string {
  return createHash('sha1').update(input).digest('hex').slice(0, 12)
}

/** Graph row for one bundle rev (url carries the rev as its cache-busting query). */
function graphRow(id: string, rev: string, fields: WebBootRowFields): WebBootEntry {
  return {
    id,
    url: `/plugins/${id}/client.js?rev=${rev}`,
    rev,
    ...(fields.inject !== undefined ? { inject: fields.inject } : {}),
    ...(fields.immediately ? { immediately: true } : {}),
    ...(fields.external.length > 0 ? { external: fields.external } : {}),
  }
}

View on GitHub (pinned to b150a551b8)

Solutions

Set exports[./client] to a string or an object with a string default.

When it happens

Trigger: Thrown at packages/client/modules/src/index.ts:158 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/3696d72c4867e20b. Report an issue: GitHub.