chore: remove crypto dependency

Author: im-adithya

examples/l402.js

@@ -1,8 +1,6 @@
 import { fetchWithL402 } from "@getalby/lightning-tools";
 import { webln } from "alby-js-sdk";
 import "websocket-polyfill";
-import * as crypto from "crypto";
-globalThis.crypto = crypto;
 
 const url = "https://lsat-weather-api.getalby.repl.co/kigali";
 
@@ -16,12 +14,12 @@ const nostrWeblnProvider = new webln.NostrWebLNProvider({
   nostrWalletConnectUrl,
 });
 nostrWeblnProvider.on("sendPayment", (response) => {
-  console.log(`payment response:`, response);
+  console.info(`payment response:`, response);
 });
 
 fetchWithL402(url, {}, { webln: nostrWeblnProvider })
   .then((response) => response.json())
   .then((data) => {
-    console.log(data);
+    console.info(data);
     nostrWeblnProvider.close();
   });

examples/request-invoice.js

@@ -1,5 +1,3 @@
-import * as crypto from "crypto"; // or 'node:crypto'
-global.crypto = crypto;
 import { LightningAddress } from "@getalby/lightning-tools";
 
 const ln = new LightningAddress("[email protected]");
@@ -9,5 +7,5 @@ await ln.fetch();
 // this returns a new `Invoice` class that can also be used to validate the payment
 const invoice = await ln.requestInvoice({ satoshi: 1000 });
 
-console.log(invoice.paymentRequest); // print the payment request
-console.log(invoice.paymentHash); // print the payment hash
+console.info(invoice.paymentRequest); // print the payment request
+console.info(invoice.paymentHash); // print the payment hash

examples/zaps-nwc.js

@@ -1,11 +1,8 @@
 import { LightningAddress } from "@getalby/lightning-tools";
 import { webln } from "alby-js-sdk";
 import "websocket-polyfill";
-import * as crypto from "crypto";
 import { finalizeEvent, getPublicKey } from "nostr-tools";
 import { hexToBytes } from "@noble/hashes/utils";
-/*global globalThis*/
-globalThis.crypto = crypto;
 
 // your private key is required to sign zap request events
 const nostrPrivateKey = process.env.NOSTR_PRIVATE_KEY;

examples/zaps.js

@@ -18,11 +18,11 @@ import { LightningAddress } from "@getalby/lightning-tools";
   if (window.webln) {
     // zap in one go with WebLN (https://www.webln.guide) (easiest for web apps)
     const response = await ln.zap(zapArgs); // signs zap request event, generates invoice and pays it
-    console.log(response.preimage); // print the preimage
+    console.info(response.preimage); // print the preimage
   } else {
     // or manually (create an invoice and give it to the user to pay)
     const invoice = await ln.zapInvoice(zapArgs); // generates a zap invoice
-    console.log(invoice.paymentRequest); // print the payment request
+    console.info(invoice.paymentRequest); // print the payment request
     await invoice.isPaid(); // check the payment status as described above
   }
 })();

src/invoice.ts

@@ -1,6 +1,7 @@
 import { decodeInvoice } from "./utils/invoice";
 import { InvoiceArgs } from "./types";
-import { sha256 } from "./utils/sha256";
+import { sha256 } from "@noble/hashes/sha256";
+import { bytesToHex } from "@noble/hashes/utils";
 import { fromHexString } from "./utils/hex";
 
 export default class Invoice {
@@ -46,11 +47,11 @@ export default class Invoice {
     }
   }
 
-  async validatePreimage(preimage: string): Promise<boolean> {
+  validatePreimage(preimage: string): boolean {
     if (!preimage || !this.paymentHash) return false;
 
     try {
-      const preimageHash = await sha256(fromHexString(preimage));
+      const preimageHash = bytesToHex(sha256(fromHexString(preimage)));
       return this.paymentHash === preimageHash;
     } catch {
       return false;
@@ -68,8 +69,8 @@ export default class Invoice {
 
       return json.settled;
     } catch (error) {
-      console.error("failed to check LNURL-verify", error)
-      return false
+      console.error("failed to check LNURL-verify", error);
+      return false;
     }
   }
 

src/utils/lnurl.ts

@@ -3,7 +3,8 @@ import type {
   LnUrlPayResponse,
   LnUrlRawData,
 } from "../types";
-import { sha256 } from "./sha256";
+import { sha256 } from "@noble/hashes/sha256";
+import { bytesToHex } from "@noble/hashes/utils";
 
 const URL_REGEX =
   /((([A-Za-z]{3,9}:(?:\/\/)?)(?:[-;:&=+$,\w]+@)?[A-Za-z0-9.-]+|(?:www.|[-;:&=+$,\w]+@)[A-Za-z0-9.-]+)((?:\/[+~%/.\w-_]*)?\??(?:[-+=&;%@.\w_]*)#?(?:[\w]*))?)/;
@@ -45,10 +46,10 @@ export const parseLnUrlPayResponse = async (
   let metadataHash: string;
   try {
     metadata = JSON.parse(data.metadata + "");
-    metadataHash = await sha256(data.metadata + "");
+    metadataHash = bytesToHex(sha256(data.metadata + ""));
   } catch {
     metadata = [];
-    metadataHash = await sha256("[]");
+    metadataHash = bytesToHex(sha256("[]"));
   }
 
   let email = "";

src/utils/nostr.ts

@@ -1,5 +1,6 @@
 import { Event, NostrResponse, ZapArgs, ZapOptions } from "../types";
-import { sha256 } from "./sha256";
+import { sha256 } from "@noble/hashes/sha256";
+import { bytesToHex } from "@noble/hashes/utils";
 
 export async function generateZapEvent(
   { satoshi, comment, p, e, relays }: ZapArgs,
@@ -31,7 +32,7 @@ export async function generateZapEvent(
     content: comment ?? "",
   };
 
-  nostrEvent.id = await getEventHash(nostrEvent);
+  nostrEvent.id = getEventHash(nostrEvent);
   return await nostr.signEvent(nostrEvent);
 }
 
@@ -68,8 +69,8 @@ export function serializeEvent(evt: Event): string {
   ]);
 }
 
-export function getEventHash(event: Event): Promise<string> {
-  return sha256(serializeEvent(event));
+export function getEventHash(event: Event): string {
+  return bytesToHex(sha256(serializeEvent(event)));
 }
 
 export function parseNostrResponse(