deepseek-ai/deepseek-harness · error · Error

typert: invalid face ${JSON.stringify(face)} — expected "hos

Error message

typert: invalid face ${JSON.stringify(face)} — expected "host" or "client"

What it means

Error "typert: invalid face ${JSON.stringify(face)} — expected "host" or "client"" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/typert/registry/src/service.ts:595

  listPackages(filter: TypertPackageFilter = {}): TypertPackageRecord[] {
    return [...this.packages.values()].filter(record => matches(record, filter))
  }

  /**
   * Project a live Zod schema to JSON Schema without caching the result.
   * @param key - global schema key.
   * @param params - Zod projection parameters.
   * @returns a fresh JSON Schema document.
   */
  toJSONSchema(key: string, params?: z.core.ToJSONSchemaParams): z.core.JSONSchema.BaseSchema {
    return z.toJSONSchema(this.resolve(key).schema, params)
  }

  private validatePackage(contribution: TypertContribution): TypertPackageRecord {
    validateSegment('package name', contribution.package)
    const face: unknown = contribution.face
    if (face !== 'host' && face !== 'client') {
      throw new Error(`typert: invalid face ${JSON.stringify(face)} — expected "host" or "client"`)
    }
    const key = typertPackageKey(contribution.package, contribution.face)
    if (this.packages.has(key)) {
      throw new Error(`typert: package face "${key}" is already registered`)
    }
    return {
      package: contribution.package,
      face,
      key,
      model: contribution.model,
    }
  }

  private validateSchemas(contribution: TypertContribution): TypertSchemaRecord[] {
    const records: TypertSchemaRecord[] = []
    const batch = new Set<string>()
    for (const schema of contribution.schemas) {
      validateSegment('schema name', schema.name)

View on GitHub (pinned to b150a551b8)

Solutions

1. Pass face as "host" or "client".

When it happens

Trigger: Thrown at packages/typert/registry/src/service.ts:595 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/82335552abf27c9c. Report an issue: GitHub.