{"record":{"id":"b3abf70e401249fe","repo":"deepseek-ai/deepseek-harness","slug":"skill-provider-providername-list-must-retur","errorCode":null,"errorMessage":"skill provider \"${providerName}\" list() must return an array or { candidates, complete } observation","messagePattern":"skill provider \"(.+?)\" list\\(\\) must return an array or (.+?) observation","errorType":"validation","errorClass":"TypeError","httpStatus":null,"severity":"error","filePath":"packages/skill/skill/src/index.ts","lineNumber":668,"sourceCode":"    for (const callback of this.ctx.events.dispatch('emit', ['skills/change'])) {\n      try {\n        const returned: unknown = callback()\n        void Promise.resolve(returned).catch((error: unknown) => {\n          this.ctx.logger.warn(`skills/change listener rejected: ${errorMessage(error)}`)\n        })\n      } catch (error: unknown) {\n        this.ctx.logger.warn(`skills/change listener threw: ${errorMessage(error)}`)\n      }\n    }\n  }\n}\n\nfunction normalizeProviderObservation(output: unknown, providerName: string): SkillProviderObservation {\n  if (Array.isArray(output)) {\n    return { candidates: output as readonly SkillCandidate[], complete: true }\n  }\n  if (output === null || typeof output !== 'object') {\n    throw invalidProviderObservation(providerName)\n  }\n  const observation = output as Partial<SkillProviderObservation>\n  if (!Array.isArray(observation.candidates) || typeof observation.complete !== 'boolean') {\n    throw invalidProviderObservation(providerName)\n  }\n  return observation as SkillProviderObservation\n}\n\nfunction invalidProviderObservation(providerName: string): TypeError {\n  return new TypeError(`skill provider \"${providerName}\" list() must return an array or { candidates, complete } observation`)\n}\n\nconst RUNTIME_SKILL_PROVIDER: SkillProvider = {\n  name: RUNTIME_PROVIDER,\n  /* v8 ignore next -- Runtime skills are injected directly by the registry; this provider only owns `get()`. */\n  list() {\n    return Promise.resolve([])\n  },","sourceCodeStart":650,"sourceCodeEnd":686,"githubUrl":"https://github.com/deepseek-ai/deepseek-harness/blob/b150a551b8d465e31e418e1b2eaf5e79bbb7d28e/packages/skill/skill/src/index.ts#L650-L686","documentation":"Error \"skill provider \"${providerName}\" list() must return an array or { candidates, complete } observation\" thrown in deepseek-ai/deepseek-harness.","triggerScenarios":"Thrown at packages/skill/skill/src/index.ts:668 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Fix the provider list() to return an array or a { candidates, complete } observation."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"b150a551b8d465e31e418e1b2eaf5e79bbb7d28e","analyzedAt":"2026-08-24T18:12:29.105Z","schemaVersion":2},"datasetVersion":"2026-08-24T22:17:12.610Z"}