feat: add Coin98 type interface

also, move `Window` to `global` scope

packages/sdk/src/browser-wallets/coin98/types.ts

@@ -0,0 +1,25 @@
+import { RequireAtLeastOne } from "../../utils/types"
+import { UnisatNetwork } from "../unisat"
+
+interface Coin98SignPSBTOptions {
+  autoFinalized?: boolean
+  toSignInputs?: Array<
+    RequireAtLeastOne<{
+      address?: string
+      publicKey?: string
+    }> & {
+      index: number
+      sigHashTypes?: number[]
+    }
+  >
+}
+
+export interface Coin98 {
+  requestAccounts: () => Promise<string[]>
+  getAccounts: () => Promise<string>
+  getNetwork: () => Promise<UnisatNetwork>
+  getPublicKey: () => Promise<string>
+  signMessage: (message: string) => Promise<string>
+  signPsbt: (hex: string, { autoFinalized = true, toSignInputs }: Coin98SignPSBTOptions) => Promise<string>
+  switchNetwork: (network: UnisatNetwork) => Promise<void>
+}

packages/sdk/src/types.d.ts

@@ -1,7 +1,14 @@
-declare interface Window {
-  unisat: Unisat
-  satsConnect: any
-  ethereum: MetaMask
+import { BitcoinProvider } from "sats-connect"
+
+import { Coin98 } from "./browser-wallets/coin98/types"
+
+declare global {
+  interface Window {
+    unisat: Unisat
+    coin98: { bitcoin: Coin98 }
+    BitcoinProvider: BitcoinProvider
+    ethereum: MetaMask
+  }
 }
 
 type Unisat = {