package.json

@@ -17,7 +17,7 @@
     "typescript": "^5.3.2"
   },
   "dependencies": {
-    "@cashu/cashu-ts": "^2.0.0",
+    "@cashu/cashu-ts": "^1.2.1",
     "@nostr-dev-kit/ndk": "^2.10.7"
   }
 }

src/cashu.ts

@@ -1,6 +1,6 @@
-import { CashuMint, CashuWallet, getDecodedToken, getEncodedToken } from "@cashu/cashu-ts";
+import {getDecodedToken} from "@cashu/cashu-ts";
-import type { Token } from "@cashu/cashu-ts";
+import type {Proof, TokenEntry} from "@cashu/cashu-ts";
-import { getMailSubscriptionDurationForSats } from "./general.ts";
+import {getMailSubscriptionDurationForSats} from "./general.ts";
 
 class InvalidTokenException extends Error {
   constructor(message: string) {
@@ -20,39 +20,23 @@ export class TokenInfo {
   ] as const;
   private static readonly MIN_AMOUNT = 21 as const;
 
-  public readonly token: Token;
+  public readonly token: TokenEntry;
   public readonly amount: number;
-
+  public readonly mint: string;
-  get mint() {
+  public readonly proofs: Proof[];
-    return this.token.mint;
-  }
-
-  get proofs() {
-    return this.token.proofs;
-  }
 
   constructor(protected readonly tokenString: string) {
-    const token = getDecodedToken(tokenString);
+    const decodedTokenData = getDecodedToken(tokenString);
-
+    if (decodedTokenData.unit !== 'sat' || decodedTokenData.token.length !== 1)
-    const amount = token.proofs.reduce((c, x) => c + x.amount, 0);
+      throw new InvalidTokenException('Invalid token format. We only accept a single token denominated in sats');
-
+    this.token = decodedTokenData.token[0];
-    if (!TokenInfo.ALLOWED_MINTS.includes(token.mint))
+    this.amount = this.token.proofs.reduce((c, x) => c + x.amount, 0);
-      throw new InvalidTokenException('Unsupported mint');
+    if (this.amount < TokenInfo.MIN_AMOUNT)
-    if (amount < TokenInfo.MIN_AMOUNT)
       throw new InvalidTokenException(`Invalid amount. Minimum required: ${TokenInfo.MIN_AMOUNT} sats`);
-
+    if (!TokenInfo.ALLOWED_MINTS.includes(this.token.mint))
-    this.token = token;
+      throw new InvalidTokenException('Unsupported mint');
-    this.amount = amount;
+    this.mint = this.token.mint;
-  }
+    this.proofs = this.token.proofs;
-
-  async receive(): Promise<string> {
-    const mint = new CashuMint(this.mint);
-    const wallet = new CashuWallet(mint);
-    const newToken = await wallet.receive(this.tokenString);
-    return getEncodedToken({
-      mint: this.mint,
-      proofs: newToken
-    });
   }
 }
 

src/index.ts

@@ -1,4 +1,4 @@
-export * from "./cashu.ts";
+export * from "./cashu";
-export * from "./general.ts";
+export * from "./general";
 export * from "./nostr.ts";
 export * from "./email.ts";

src/nostr.ts

@@ -1,7 +1,6 @@
 import NDK, {NDKEvent, NDKPrivateKeySigner, NDKUser} from "@nostr-dev-kit/ndk";
 import {generateSecretKey} from "nostr-tools";
 import {randomTimeUpTo2DaysInThePast} from "./general.ts";
-import {decode as nip19Decode, npubEncode} from "nostr-tools/nip19";
 
 export async function encryptEventForRecipient(
   ndk: NDK,
@@ -26,14 +25,3 @@ export async function encryptEventForRecipient(
   giftWrap.ndk = ndk;
   return giftWrap;
 }
-
-export function npubToPubKeyString(npub: string) {
-  const decoded = nip19Decode(npub);
-  if (decoded.type !== 'npub')
-    throw new Error('Invalid npub');
-  return decoded.data;
-}
-
-export function pubKeyStringToNpub(pubKey: string) {
-  return npubEncode(pubKey);
-}