{"record":{"id":"940f6828fc25ea99","repo":"earendil-works/pi","slug":"malformed-cbor-major-type","errorCode":null,"errorMessage":"Malformed CBOR major type","messagePattern":"Malformed CBOR major type","errorType":"exception","errorClass":"CborError","httpStatus":null,"severity":"error","filePath":"packages/protocol/src/cbor/decoder.ts","lineNumber":84,"sourceCode":"\t\t\t\t\tconst key = this.readItem(depth + 1);\n\t\t\t\t\tif (typeof key !== \"string\") throw new CborError(\"CBOR map keys must be strings\");\n\t\t\t\t\tif (keys.has(key)) throw new CborError(\"CBOR map contains a duplicate key\");\n\t\t\t\t\tkeys.add(key);\n\t\t\t\t\tObject.defineProperty(result, key, {\n\t\t\t\t\t\tconfigurable: true,\n\t\t\t\t\t\tenumerable: true,\n\t\t\t\t\t\tvalue: this.readItem(depth + 1),\n\t\t\t\t\t\twritable: true,\n\t\t\t\t\t});\n\t\t\t\t}\n\t\t\t\treturn result;\n\t\t\t}\n\t\t\tcase 6:\n\t\t\t\tthrow new CborError(\"CBOR tags are not supported\");\n\t\t\tcase 7:\n\t\t\t\treturn this.readSimple(additionalInformation);\n\t\t\tdefault:\n\t\t\t\tthrow new CborError(\"Malformed CBOR major type\");\n\t\t}\n\t}\n\n\tprivate readSimple(additionalInformation: number): unknown {\n\t\tswitch (additionalInformation) {\n\t\t\tcase 20:\n\t\t\t\treturn false;\n\t\t\tcase 21:\n\t\t\t\treturn true;\n\t\t\tcase 22:\n\t\t\t\treturn null;\n\t\t\tcase 27: {\n\t\t\t\tconst bytes = this.readBytes(8);\n\t\t\t\tconst value = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength).getFloat64(0, false);\n\t\t\t\tif (!Number.isFinite(value)) throw new CborError(\"Decoded CBOR number must be finite\");\n\t\t\t\tif (Number.isInteger(value) && !Number.isSafeInteger(value)) {\n\t\t\t\t\tthrow new CborError(\"Decoded CBOR integer is outside the safe range\");\n\t\t\t\t}","sourceCodeStart":66,"sourceCodeEnd":102,"githubUrl":"https://github.com/earendil-works/pi/blob/4af9d21d3b4d664e4a29fcabfec85171077248e3/packages/protocol/src/cbor/decoder.ts#L66-L102","documentation":"Error \"Malformed CBOR major type\" thrown in earendil-works/pi.","triggerScenarios":"Thrown at packages/protocol/src/cbor/decoder.ts:84 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["The input is not valid CBOR. Verify the payload comes from a compliant CBOR encoder and was not corrupted in transit."],"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"}