@hyperlane-xyz/sdk/dist/token/sealevel/metadata.js

The official SDK for the Hyperlane Network

import { PublicKey } from '@solana/web3.js';
import { deserializeUnchecked } from 'borsh';
class Creator {
    address;
    verified;
    share;
    constructor(fields) {
        Object.assign(this, fields);
    }
}
class MetadataData {
    name;
    symbol;
    uri;
    sellerFeeBasisPoints;
    creators;
    constructor(fields) {
        Object.assign(this, fields);
    }
}
export class Metadata {
    key;
    updateAuthority;
    mint;
    data;
    primarySaleHappened;
    isMutable;
    editionNonce;
    constructor(fields) {
        Object.assign(this, fields);
    }
}
export const SPL_TOKEN_METADATA_SCHEMA = new Map([
    [
        Creator,
        {
            kind: 'struct',
            fields: [
                ['address', [32]],
                ['verified', 'u8'],
                ['share', 'u8'],
            ],
        },
    ],
    [
        MetadataData,
        {
            kind: 'struct',
            fields: [
                ['name', 'string'],
                ['symbol', 'string'],
                ['uri', 'string'],
                ['sellerFeeBasisPoints', 'u16'],
                ['creators', { kind: 'option', type: [Creator] }],
            ],
        },
    ],
    [
        Metadata,
        {
            kind: 'struct',
            fields: [
                ['key', 'u8'],
                ['updateAuthority', [32]],
                ['mint', [32]],
                ['data', MetadataData],
                ['primarySaleHappened', 'u8'],
                ['isMutable', 'u8'],
                ['editionNonce', { kind: 'option', type: 'u8' }],
            ],
        },
    ],
]);
// Metadata program account for creating SPL tokens metadata
const METADATA_PROGRAM_ID = new PublicKey('metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s');
const removeNullPaddingFromString = (s) => s.replaceAll('\x00', '');
export async function getLegacySPLTokenMetadata(connection, mint) {
    // Derive the SPL token metadata account
    const [metadataPda] = PublicKey.findProgramAddressSync([Buffer.from('metadata'), METADATA_PROGRAM_ID.toBuffer(), mint.toBuffer()], METADATA_PROGRAM_ID);
    const accountInfo = await connection.getAccountInfo(metadataPda);
    if (!accountInfo)
        return null;
    const metadata = deserializeUnchecked(SPL_TOKEN_METADATA_SCHEMA, Metadata, accountInfo.data);
    return {
        name: removeNullPaddingFromString(metadata.data.name),
        symbol: removeNullPaddingFromString(metadata.data.symbol),
        uri: removeNullPaddingFromString(metadata.data.uri),
    };
}
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