{
  "version": 3,
  "sources": ["../src/clarity/structuredData.ts"],
  "sourcesContent": [
    "import { sha256 } from \"@noble/hashes/sha2.js\";\nimport type { LocalAccount } from \"../accounts/types.ts\";\nimport { bytesToHex, concatBytes } from \"../utils/encoding.ts\";\nimport { serializeCVBytes } from \"./serialize.ts\";\nimport type { ClarityValue, TupleCV } from \"./types.ts\";\n\n/** asciiToBytes(\"SIP018\") */\nexport const SIP018_PREFIX: Uint8Array = new Uint8Array([\n\t0x53, 0x49, 0x50, 0x30, 0x31, 0x38,\n]);\n\n/** sha256(serialize(cv)) — inner hash used by SIP-018. */\nexport function hashStructuredData(structuredData: ClarityValue): Uint8Array {\n\treturn sha256(serializeCVBytes(structuredData));\n}\n\nfunction isDomain(value: ClarityValue): value is TupleCV {\n\tif (value.type !== \"tuple\") return false;\n\tconst { name, version, \"chain-id\": chainId } = value.value;\n\treturn (\n\t\tname?.type === \"ascii\" &&\n\t\tversion?.type === \"ascii\" &&\n\t\tchainId?.type === \"uint\"\n\t);\n}\n\n/**\n * SIP-018 encoding: `\"SIP018\" || sha256(serialize(domain)) || sha256(serialize(message))`.\n * The signature is over `sha256` of this buffer.\n */\nexport function encodeStructuredData(opts: {\n\tmessage: ClarityValue;\n\tdomain: ClarityValue;\n}): Uint8Array {\n\tif (!isDomain(opts.domain)) {\n\t\tthrow new Error(\n\t\t\t\"domain must be a tuple { name: ascii, version: ascii, chain-id: uint }\",\n\t\t);\n\t}\n\treturn concatBytes(\n\t\tSIP018_PREFIX,\n\t\thashStructuredData(opts.domain),\n\t\thashStructuredData(opts.message),\n\t);\n}\n\n/** SIP-018 message hash: sha256(encodeStructuredData(...)). */\nexport function structuredDataHash(opts: {\n\tmessage: ClarityValue;\n\tdomain: ClarityValue;\n}): Uint8Array {\n\treturn sha256(encodeStructuredData(opts));\n}\n\n/**\n * Sign a SIP-018 structured message. Returns a 65-byte recoverable signature\n * in RSV order (recovery byte last) — the layout contracts expect.\n */\nexport async function signStructuredData(\n\taccount: LocalAccount,\n\topts: { message: ClarityValue; domain: ClarityValue },\n): Promise<string> {\n\tconst vrs = await account.sign(structuredDataHash(opts));\n\tif (vrs.length !== 65) {\n\t\tthrow new Error(\n\t\t\t`Expected 65-byte recoverable signature, got ${vrs.length}`,\n\t\t);\n\t}\n\treturn bytesToHex(concatBytes(vrs.slice(1), vrs.slice(0, 1)));\n}\n"
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  "debugId": "85A2539C2F081F0364756E2164756E21",
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}