@solana/spl-token/lib/esm/extensions/tokenGroup/state.js

SPL Token Program JS API

import { PublicKey } from '@solana/web3.js';
import { unpackTokenGroup, unpackTokenGroupMember, } from '@solana/spl-token-group';
import { ExtensionType, getExtensionData } from '../extensionType.js';
export { TOKEN_GROUP_SIZE, TOKEN_GROUP_MEMBER_SIZE } from '@solana/spl-token-group';
export function getTokenGroupState(mint) {
    const extensionData = getExtensionData(ExtensionType.TokenGroup, mint.tlvData);
    if (extensionData !== null) {
        const { updateAuthority, mint, size, maxSize } = unpackTokenGroup(extensionData);
        // Explicitly set None/Zero keys to null
        return {
            updateAuthority: updateAuthority?.equals(PublicKey.default) ? undefined : updateAuthority,
            mint,
            size,
            maxSize,
        };
    }
    else {
        return null;
    }
}
export function getTokenGroupMemberState(mint) {
    const extensionData = getExtensionData(ExtensionType.TokenGroupMember, mint.tlvData);
    if (extensionData !== null) {
        const { mint, group, memberNumber } = unpackTokenGroupMember(extensionData);
        return {
            mint,
            group,
            memberNumber,
        };
    }
    else {
        return null;
    }
}
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