Precondition with Slash Command

import { Precondition } from '@sapphire/framework';
import config from '#rootJson/config' assert { type: 'json' };

export class OwnerOnlyPrecondition extends Precondition {
    async messageRun(message) {
        // for message command

        return this.checkOwner(message.author.id);
    }

    async chatInputRun(interaction) {
        return this.checkOwner(interaction.user.id);
    }

    async contextMenuRun(interaction) {
        // for Context Menu Command

        return this.checkOwner(interaction.user.id);
    }

    async checkOwner(userId) {
        return config.owners.includes(userId) ? this.ok() : this.error({ message: 'Only the bot owner can use this command!' });
    }
}

import { Precondition } from '@sapphire/framework';
import config from '#rootJson/config' assert { type: 'json' };

export class OwnerOnlyPrecondition extends Precondition {
    async messageRun(message) {
        // for message command

        return this.checkOwner(message.author.id);
    }

    async chatInputRun(interaction) {
        return this.checkOwner(interaction.user.id);
    }

    async contextMenuRun(interaction) {
        // for Context Menu Command

        return this.checkOwner(interaction.user.id);
    }

    async checkOwner(userId) {
        return config.owners.includes(userId) ? this.ok() : this.error({ message: 'Only the bot owner can use this command!' });
    }
}