js: gossip

Signed-off-by: Yuki Kishimoto <[email protected]>

Author: yukibtc

bindings/nostr-sdk-js/.cargo/config.toml

@@ -3,11 +3,14 @@ opt-level = 'z'     # Optimize for size.
 lto = true          # Enable Link Time Optimization
 codegen-units = 1   # Reduce number of codegen units to increase optimizations.
 panic = "abort"     # Abort on panic
-strip = true        # Strip symbols from binary
+strip = "debuginfo" # Strip debug symbols from binary. Full strip will cause issues with SQLite
 
 [build]
 target = "wasm32-unknown-unknown"
-rustflags = ["-C", "panic=abort"]
+rustflags = [
+    "-Cpanic=abort",
+    "-Ctarget-feature=+bulk-memory" # Required for SQLite WASM
+]
 
 [unstable]
 unstable-options = true

bindings/nostr-sdk-js/Cargo.toml

@@ -11,15 +11,15 @@ crate-type = ["cdylib"]
 console_error_panic_hook = "0.1"
 js-sys.workspace = true
 nostr-connect.workspace = true
-nostr-sdk = { workspace = true, default-features = false, features = ["all-nips", "indexeddb"] }
+nostr-sdk = { workspace = true, default-features = false, features = ["all-nips", "indexeddb", "gossip"] }
 nwc.workspace = true
 tracing.workspace = true
 tracing-subscriber.workspace = true
 wasm-bindgen = { workspace = true, features = ["std"] }
 wasm-bindgen-futures.workspace = true
 
 [package.metadata.wasm-pack.profile.profiling]
-wasm-opt = true
+wasm-opt = false # Optimizations causes issues to SQLite gossip storage
 
 [lints.rust]
 unexpected_cfgs = { level = "warn", check-cfg = ['cfg(wasm_bindgen_unstable_test_coverage)'] }

bindings/nostr-sdk-js/examples/gossip.js

@@ -0,0 +1,31 @@
+const { Keys, Client, NostrSigner, PublicKey, EventBuilder, loadWasmAsync, initLogger, Gossip, LogLevel, Tag } = require("../");
+
+async function main() {
+    await loadWasmAsync();
+
+    initLogger(LogLevel.info());
+
+    let keys = Keys.parse("nsec1ufnus6pju578ste3v90xd5m2decpuzpql2295m3sknqcjzyys9ls0qlc85");
+    let signer = NostrSigner.keys(keys);
+
+    let gossip = Gossip.inMemory()
+
+    let client = Client.builder().signer(signer).gossip(gossip).build();
+
+    await client.addDiscoveryRelay("wss://relay.damus.io");
+    await client.addDiscoveryRelay("wss://purplepag.es");
+
+    await client.connect();
+
+    let pk = PublicKey.parse("npub1drvpzev3syqt0kjrls50050uzf25gehpz9vgdw08hvex7e0vgfeq0eseet");
+
+    let builder = EventBuilder.textNote(
+        "Hello world nostr:npub1drvpzev3syqt0kjrls50050uzf25gehpz9vgdw08hvex7e0vgfeq0eseet",
+    ).tags([Tag.publicKey(pk)]);
+    let output = await client.sendEventBuilder(builder);
+    console.log("Event ID", output.id.toBech32());
+    console.log("Successfully sent to:", output.success);
+    console.log("Failed to sent to:", output.failed);
+}
+
+main();

bindings/nostr-sdk-js/src/client/builder.rs

@@ -10,6 +10,7 @@ use wasm_bindgen::prelude::*;
 use super::options::JsOptions;
 use super::{JsClient, JsNostrSigner};
 use crate::database::JsNostrDatabase;
+use crate::gossip::JsGossip;
 use crate::policy::{FFI2RustAdmitPolicy, JsAdmitPolicy};
 
 #[wasm_bindgen(js_name = ClientBuilder)]
@@ -41,6 +42,10 @@ impl JsClientBuilder {
         self.inner.database(database.deref().clone()).into()
     }
 
+    pub fn gossip(self, gossip: &JsGossip) -> Self {
+        self.inner.gossip(gossip.deref().clone()).into()
+    }
+
     #[wasm_bindgen(js_name = admitPolicy)]
     pub fn admit_policy(self, policy: JsAdmitPolicy) -> Self {
         self.inner

bindings/nostr-sdk-js/src/client/options.rs

@@ -52,11 +52,6 @@ impl JsOptions {
         self.inner.automatic_authentication(enabled).into()
     }
 
-    /// Enable gossip model (default: false)
-    pub fn gossip(self, enable: bool) -> Self {
-        self.inner.gossip(enable).into()
-    }
-
     /// Set custom relay limits
     #[wasm_bindgen(js_name = relayLimits)]
     pub fn relay_limits(self, limits: &JsRelayLimits) -> Self {

bindings/nostr-sdk-js/src/gossip.rs

@@ -0,0 +1,31 @@
+// Copyright (c) 2022-2023 Yuki Kishimoto
+// Copyright (c) 2023-2025 Rust Nostr Developers
+// Distributed under the MIT software license
+
+use std::ops::Deref;
+
+use nostr_sdk::prelude::*;
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen(js_name = Gossip)]
+pub struct JsGossip {
+    inner: Gossip,
+}
+
+impl Deref for JsGossip {
+    type Target = Gossip;
+
+    fn deref(&self) -> &Self::Target {
+        &self.inner
+    }
+}
+
+#[wasm_bindgen(js_class = Gossip)]
+impl JsGossip {
+    #[wasm_bindgen(js_name = inMemory)]
+    pub fn in_memory() -> Self {
+        Self {
+            inner: Gossip::in_memory(),
+        }
+    }
+}

bindings/nostr-sdk-js/src/lib.rs

@@ -19,6 +19,7 @@ pub mod connect;
 pub mod database;
 pub mod duration;
 pub mod error;
+pub mod gossip;
 pub mod logger;
 pub mod nwc;
 pub mod policy;