pointblankshot.js

const effect = {
    name: "Point-Blank Shot",
    modifier: {
        stat: "damage",
        value: 2,
        type: "circumstance",
    },
    iconPath: "systems/pf2e/icons/features/classes/precision.jpg",
};
(async () => {
    if (
        (actor.data.data.customModifiers[effect.modifier.stat] || []).some(
            (customModifier) => customModifier.name === effect.name
        )
    ) {
        if (token.data.effects.includes(effect.iconPath)) {
            await token.toggleEffect(effect.iconPath);
        }
        await actor.removeCustomModifier(effect.modifier.stat, effect.name);
    } else {
        const itemID =
            actor.items
                .filter((item) => item.data.type === "action")
                .find((item) => item.data.name === effect.name)?._id ??
            actor.items.find((item) => item.data.name === effect.name)?._id;
        if (itemID) {
            game.pf2e.rollItemMacro(itemID);
        }
        if (!token.data.effects.includes(effect.iconPath)) {
            await token.toggleEffect(effect.iconPath);
        }
        await actor.addCustomModifier(
            effect.modifier.stat,
            effect.name,
            effect.modifier.value,
            effect.modifier.type
        );
    }
})();