{"record":{"id":"3fb6edb673190ac3","repo":"earendil-works/pi","slug":"properties-require-type-object","errorCode":null,"errorMessage":"properties require type object","messagePattern":"properties require type object","errorType":"exception","errorClass":"UnsupportedStrictJsonSchemaError","httpStatus":null,"severity":"error","filePath":"packages/ai/src/api/constrained-sampling.ts","lineNumber":84,"sourceCode":"\t\t}\n\t\tfor (const variant of schema.anyOf) {\n\t\t\tif (isStructuredSchema(variant)) {\n\t\t\t\tthrow new UnsupportedStrictJsonSchemaError(\"object and array unions are unsupported\");\n\t\t\t}\n\t\t\tmakeJsonSchemaNodeStrict(variant);\n\t\t}\n\t}\n\n\tif (schema.items !== undefined) {\n\t\tif (Array.isArray(schema.items)) {\n\t\t\tthrow new UnsupportedStrictJsonSchemaError(\"tuple schemas are unsupported\");\n\t\t}\n\t\tmakeJsonSchemaNodeStrict(schema.items);\n\t}\n\n\tconst isObjectSchema = schema.type === \"object\";\n\tif (schema.properties !== undefined && !isObjectSchema) {\n\t\tthrow new UnsupportedStrictJsonSchemaError(\"properties require type object\");\n\t}\n\tif (!isObjectSchema) return;\n\tif (schema.additionalProperties !== undefined && schema.additionalProperties !== false) {\n\t\tthrow new UnsupportedStrictJsonSchemaError(\"schema-valued or true additionalProperties is unsupported\");\n\t}\n\tif (schema.properties !== undefined && !isJsonSchemaObject(schema.properties)) {\n\t\tthrow new UnsupportedStrictJsonSchemaError(\"object properties must be a schema map\");\n\t}\n\tif (\n\t\tschema.required !== undefined &&\n\t\t(!Array.isArray(schema.required) || schema.required.some((key) => typeof key !== \"string\"))\n\t) {\n\t\tthrow new UnsupportedStrictJsonSchemaError(\"object required must be a string array\");\n\t}\n\n\tconst properties = schema.properties ?? {};\n\tconst propertyNames = Object.keys(properties);\n\tconst required = new Set(Array.isArray(schema.required) ? schema.required : []);","sourceCodeStart":66,"sourceCodeEnd":102,"githubUrl":"https://github.com/earendil-works/pi/blob/4af9d21d3b4d664e4a29fcabfec85171077248e3/packages/ai/src/api/constrained-sampling.ts#L66-L102","documentation":"Error \"properties require type object\" thrown in earendil-works/pi.","triggerScenarios":"Thrown at packages/ai/src/api/constrained-sampling.ts:84 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Set the schema type to object when declaring properties."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"4af9d21d3b4d664e4a29fcabfec85171077248e3","analyzedAt":"2026-08-24T13:07:14.692Z","schemaVersion":2},"datasetVersion":"2026-08-24T17:17:21.512Z"}