{"record":{"id":"59d5bd171cc58c6e","repo":"JuliusBrussee/caveman","slug":"value-is-not-json-serializable","errorCode":null,"errorMessage":"value is not JSON-serializable","messagePattern":"value is not JSON-serializable","errorType":"validation","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"packages/sdk/typescript/src/index.ts","lineNumber":1940,"sourceCode":"\n  const prefixHash = sha256Hex(prefixBytes);\n  const assemblyHeader = `v1;slots=${ordered.length};prefix=${prefixHash.slice(0, 12)};vbb=1`;\n  assemblyRequestHeaders.set(request, assemblyHeader);\n  return {\n    request,\n    headers: { \"x-cave-assembly\": assemblyHeader },\n    prefixHash,\n    breakpoints,\n    stableTokens: Math.ceil(new TextEncoder().encode(prefixBytes).length / 4),\n    tokenBasis: \"estimated_bytes_div_4\",\n    basis: \"inferred\",\n    volatileBelowBreakpoint: true\n  };\n}\n\nfunction canonicalJSON(value: unknown): string {\n  const raw = JSON.stringify(value);\n  if (raw === undefined) throw new Error(\"value is not JSON-serializable\");\n  return stableStringify(JSON.parse(raw));\n}\n\nfunction cloneCanonical(value: unknown): unknown {\n  return JSON.parse(canonicalJSON(value)) as unknown;\n}\n\nfunction assemblyText(value: unknown): string {\n  return typeof value === \"string\" ? value : canonicalJSON(value);\n}\n\nasync function cavePlan(cave: Cave): Promise<CavePlan> {\n  // `/sdk/v1/cave-plan` is a gateway-owned project-key route. `controlURL` is\n  // reserved for control-api `/api/v1/*` surfaces and must never redirect this\n  // call to a route that service does not expose.\n  const response = await caveFetch(cave, `${cave.options.baseURL}/sdk/v1/cave-plan`, {\n    method: \"GET\",\n    headers: otlpHeaders(cave)","sourceCodeStart":1922,"sourceCodeEnd":1958,"githubUrl":"https://github.com/JuliusBrussee/caveman/blob/27d5a3981a347890211bb1bf2439e5c821a63bc9/packages/sdk/typescript/src/index.ts#L1922-L1958","documentation":"Error \"value is not JSON-serializable\" thrown in JuliusBrussee/caveman.","triggerScenarios":"Thrown at packages/sdk/typescript/src/index.ts:1940 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Pass a JSON-serializable value (no functions, symbols, or cyclic structures)."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"27d5a3981a347890211bb1bf2439e5c821a63bc9","analyzedAt":"2026-08-15T09:26:11.751Z","schemaVersion":2},"datasetVersion":"2026-08-15T17:31:12.345Z"}