signTypedData

signTypedData supports signing typed data from the MagicSigner.

This method must be called after authenticate. Otherwise, this method will throw an error with the message Not Authenticated.

Usage

example.ts

import { createMagicSigner } from "./magic";

const magicSigner = await createMagicSigner();

const signedTypedData = await magicSigner.signTypedData({
  domain: {
    name: "Ether Mail",
    version: "1",
    chainId: 1,
    verifyingContract: "0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC",
  },
  types: {
    Person: [
      { name: "name", type: "string" },
      { name: "wallet", type: "address" },
    ],
    Mail: [
      { name: "from", type: "Person" },
      { name: "to", type: "Person" },
      { name: "contents", type: "string" },
    ],
  },
  primaryType: "Mail",
  message: {
    from: {
      name: "Cow",
      wallet: "0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826",
    },
    to: {
      name: "Bob",
      wallet: "0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB",
    },
    contents: "Hello, Bob!",
  },
});

magic.ts

import { MagicSigner } from "@alchemy/aa-signers/magic";

// this is generated from the [Magic Dashboard](https://dashboard.magic.link/)
const MAGIC_API_KEY = "pk_live_...";

export const createMagicSigner = async () => {
  const magicSigner = new MagicSigner({ apiKey: MAGIC_API_KEY });

  await magicSigner.authenticate({
    authenticate: async () => {
      await magicSigner.inner.wallet.connectWithUI();
    },
  });

  return magicSigner;
};

Returns

Promise<Hex>

A Promise containing the signature of the typed data.

Parameters

params: SignTypedDataParams -- the typed data to sign

• domain: TypedDataDomain -- The typed data domain
• types: Object -- the type definitions for the typed data
• primaryType: inferred String -- the primary type to extract from types and use in value
• message: inferred from types & primaryType -- the message, inferred from