daggerheart/module/data/items/consumable.mjs

import BaseDataItem from "./base.mjs";

export default class DHConsumable extends BaseDataItem {
     /** @inheritDoc */
    static get metadata() {
        return foundry.utils.mergeObject(super.metadata, {
            label: "TYPES.Item.consumable",
            type: "consumable",
            hasDescription: true,
            isQuantifiable: true,
        });
    }

    /** @inheritDoc */
    static defineSchema() {
        const fields = foundry.data.fields;
        return {
            ...super.defineSchema(),
            consumeOnUse: new fields.BooleanField({ initial: false })
        };
    }
}