solana-program-examples/basics/close-account/native/ts/state/index.ts

import { Buffer } from 'node:buffer';
import * as borsh from 'borsh';

export class User {
  name: string;

  constructor(props: {
    name: string;
  }) {
    this.name = props.name;
  }

  toBase58() {
    return borsh.serialize(UserSchema, this).toString();
  }

  toBuffer() {
    return Buffer.from(borsh.serialize(UserSchema, this));
  }

  static fromBuffer(buffer: Buffer) {
    return borsh.deserialize(UserSchema, User, buffer);
  }
}

export const UserSchema = new Map([
  [
    User,
    {
      kind: 'struct',
      fields: [['name', 'string']],
    },
  ],
]);