solana:getEphemeralSigners feature

packages/core/features/src/getEphemeralSigners.ts

@@ -0,0 +1,27 @@
+/** Name of the feature. */
+export const SolanaGetEphemeralSigners = 'solana:getEphemeralSigners' as const;
+
+/**
+ * Provides a secure way to request ephemeral signer addresses from the wallet.
+ * Ephemeral Signers are the addresses that can be used to sign a specific transaction once
+ * and be discarded after that.
+ * The wallet is responsible for:
+ * 1. secure generation and keeping track of the addresses;
+ * 2. making sure that the addresses sign the transactions where they are mentioned as signers;
+ */
+export type SolanaGetEphemeralSignersFeature = {
+    /** Name of the feature. */
+    readonly [SolanaGetEphemeralSigners]: {
+        /** Version of the feature API. */
+        readonly version: SolanaGetEphemeralSignersVersion;
+
+        /** Get any number of ephemeral signer addresses. */
+        readonly getEphemeralSigners: SolanaGetEphemeralSignersMethod;
+    };
+};
+
+/** Version of the feature. */
+export type SolanaGetEphemeralSignersVersion = '1.0.0';
+
+/** Get any number of ephemeral signer addresses. */
+export type SolanaGetEphemeralSignersMethod = (numberOfSigners: number) => Promise<readonly string[]>;