Refresh @solana/client README

.changeset/client-readme-alignment.md

@@ -0,0 +1,5 @@
+---
+"@solana/client": patch
+---
+
+Refresh README to mirror react-hooks structure with quickstart, copy/paste flows, and updated notes/scripts.

packages/client/README.md

@@ -8,79 +8,166 @@ in any runtime (React, Svelte, API routes, workers, etc.).
 ## Install
 
 ```bash
-pnpm add @solana/client
+npm install @solana/client
 ```
 
-## Quick start
+## Quickstart
+
+1. Choose Wallet Standard connectors (auto-discovery is the fastest way to start).
+2. Create a Solana client.
+3. Call actions, watchers, and helpers anywhere in your app (React, APIs, workers, etc.).
 
 ```ts
-import { autoDiscover, backpack, createClient, phantom, solflare } from "@solana/client";
+import { autoDiscover, createClient } from "@solana/client";
 
-const walletConnectors = [...phantom(), ...solflare(), ...backpack(), ...autoDiscover()];
 const client = createClient({
   endpoint: "https://api.devnet.solana.com",
   websocketEndpoint: "wss://api.devnet.solana.com",
-  walletConnectors,
+  walletConnectors: autoDiscover(),
 });
 
 // Connect Wallet Standard apps via their connector ids.
 await client.actions.connectWallet("phantom");
 
 // Fetch an account once.
-const account = await client.actions.fetchAccount(address);
-console.log(account.lamports?.toString());
+const wallet = client.store.getState().wallet;
+if (wallet.status === "connected") {
+  const account = await client.actions.fetchAccount(wallet.session.account.address);
+  console.log(account.lamports?.toString());
+}
+```
+
+## Common Solana flows (copy/paste)
+
+### Connect, disconnect, and inspect wallet state
+
+```ts
+const connectors = client.connectors.all; // Wallet Standard-aware connectors
+
+await client.actions.connectWallet(connectors[0].id);
+
+const wallet = client.store.getState().wallet;
+if (wallet.status === "connected") {
+  console.log(wallet.session.account.address.toString());
+}
+
+await client.actions.disconnectWallet();
+```
+
+### Fetch and watch lamports
 
-// Watch lamports in real time.
-const watcher = client.watchers.watchBalance({ address }, (lamports) => {
-  console.log("balance:", lamports.toString());
+```ts
+import { toAddress } from "@solana/client";
+
+const address = toAddress("Fg6PaFpoGXkYsidMpWFKfwtz6DhFVyG4dL1x8kj7ZJup");
+
+const lamports = await client.actions.fetchBalance(address);
+console.log(`Lamports: ${lamports.toString()}`);
+
+const watcher = client.watchers.watchBalance({ address }, (nextLamports) => {
+  console.log("Updated balance:", nextLamports.toString());
 });
 
 // Later…
 watcher.abort();
 ```
 
-## Core pieces
+### Request an airdrop (devnet/testnet)
 
-- **Client store** – Zustand store that tracks cluster status, accounts, subscriptions, transactions,
-  and wallet state. Provide your own store if you need custom persistence.
-- **Actions** – Promise-based helpers (`fetchAccount`, `fetchBalance`, `sendTransaction`, `requestAirdrop`, `setCluster`, etc.) that wrap the RPC and keep the store in sync.
-- **Watchers** – Subscription helpers (`watchAccount`, `watchBalance`, `watchSignature`) that stream
-  updates into the store and call your listeners.
-- **Helpers** – Opinionated utilities for SOL transfers, SPL tokens, and transactions. They handle
-  mundane tasks like resolving fee payers, refreshing blockhashes, or signing with Wallet Standard
-  sessions.
+```ts
+const signature = await client.actions.requestAirdrop(address, 1_000_000_000n); // 1 SOL
+console.log(signature.toString());
+```
 
-## Transaction helper
+### Send SOL
 
-`client.helpers.transaction` handles blockhashes, fee payers, and signing for you.
+```ts
+const wallet = client.store.getState().wallet;
+if (wallet.status !== "connected") throw new Error("Connect wallet first");
+
+const signature = await client.solTransfer.sendTransfer({
+  amount: 100_000_000n, // 0.1 SOL
+  authority: wallet.session, // Wallet Standard session
+  destination: "Ff34MXWdgNsEJ1kJFj9cXmrEe7y2P93b95mGu5CJjBQJ",
+});
+console.log(signature.toString());
+```
+
+### SPL token balance + transfer
+
+```ts
+const wallet = client.store.getState().wallet;
+if (wallet.status !== "connected") throw new Error("Connect wallet first");
+
+const usdc = client.splToken({ mint: "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v" }); // USDC
+
+const balance = await usdc.fetchBalance(wallet.session.account.address);
+console.log(`Balance: ${balance.uiAmount}`);
+
+const signature = await usdc.sendTransfer({
+  amount: 1n,
+  authority: wallet.session,
+  destinationOwner: "Ff34MXWdgNsEJ1kJFj9cXmrEe7y2P93b95mGu5CJjBQJ",
+});
+console.log(signature.toString());
+```
+
+### Build and send arbitrary transactions
 
 ```ts
-const prepared = await client.helpers.transaction.prepare({
-  authority: walletSession,
-  instructions: [instruction],
+import { getTransferSolInstruction } from "@solana-program/system";
+
+const wallet = client.store.getState().wallet;
+if (wallet.status !== "connected") throw new Error("Connect wallet first");
+
+const prepared = await client.transaction.prepare({
+  authority: wallet.session,
+  instructions: [
+    getTransferSolInstruction({
+      destination: "Ff34MXWdgNsEJ1kJFj9cXmrEe7y2P93b95mGu5CJjBQJ",
+      lamports: 10_000n,
+      source: wallet.session.account.address,
+    }),
+  ],
+  version: "auto", // defaults to 0 when lookups exist, otherwise 'legacy'
 });
 
-const signature = await client.helpers.transaction.send(prepared);
+// Inspect or serialize first.
+const wire = await client.transaction.toWire(prepared);
+
+// Submit.
+const signature = await client.transaction.send(prepared);
 console.log(signature.toString());
 ```
 
-- `prepare` builds a transaction message and refreshes the blockhash.
-- `sign` / `toWire` let you collect signatures or emit Base64 manually.
-- `send` submits the prepared transaction (or uses `signAndSend` if the wallet supports it).
-- `prepareAndSend` runs everything plus an optional simulation/logging pass via `prepareTransaction`.
-- Versions default to `0` automatically when any instruction references address lookup tables, otherwise `legacy`; pass `version` if you need to override.
+### Watch signature confirmations
+
+```ts
+const watcher = client.watchers.watchSignature(
+  { signature, commitment: "confirmed" },
+  (notification) => console.log("Signature update:", notification),
+);
 
-Need just the tuning step? Call `client.prepareTransaction` directly with your unsigned message.
+// Later…
+watcher.abort();
+```
 
-## Wallet helpers
+## Notes and defaults
 
-Start with connectors: `phantom()`, `solflare()`, `backpack()`, and `autoDiscover()` return Wallet Standard-aware
-connectors you can pass to `createClient` or `createWalletRegistry`. Wrap additional wallets with
-`createWalletStandardConnector` before registering. The registry powers `client.actions.connectWallet` and the
-React hooks package, but you can also query it directly to build your own selectors.
+- Wallet connectors: `autoDiscover()` picks up Wallet Standard injectables; compose `phantom()`, `solflare()`, `backpack()`, or `injected()` when you need explicit control.
+- Store: built on Zustand; pass `createStore` to `createClient` for custom persistence or server-side stores. `serializeSolanaState` / `deserializeSolanaState` help save and restore cluster + wallet metadata.
+- Actions: `fetchAccount`, `fetchBalance`, `setCluster`, `requestAirdrop`, `sendTransaction`, and wallet connect/disconnect keep the store in sync.
+- Watchers: `watchAccount`, `watchBalance`, and `watchSignature` stream updates into the store and return an `abort()` handle for cleanup.
+- Helpers: `solTransfer`, `splToken`, and `transaction` cover common transfers plus low-level `prepare`/`sign`/`toWire` flows. Transaction versions default to `0` when any instruction references address lookup tables, otherwise `legacy`; override with `version` when needed.
 
 ## Scripts
 
-- `pnpm build` – run JS compilation and type definition emit
-- `pnpm test:typecheck` – strict type-checking without emit
+- `pnpm build` – compile JS and type definitions
+- `pnpm test:typecheck` – strict type-checking
 - `pnpm lint` / `pnpm format` – Biome-powered linting and formatting
+
+## More resources
+
+- Playground: `examples/vite-react` (run with `pnpm install && pnpm dev`).
+- Next.js reference app: `examples/nextjs`.
+- Client APIs live in `src/actions.ts`, `src/watchers`, and `src/features/*` for helper internals.