@roots/bud-api/lib/methods/entry/handlePrimitive.js

bud.js core module

import { join, parse } from 'node:path';
export async function handlePrimitive(bud, value) {
    const current = bud.hooks.filter(`build.entry`, {});
    const modules = Array.isArray(value) ? value : [value];
    const { dir, name } = parse(modules[0]);
    const key = join(dir, name);
    return bud.hooks.on(`build.entry`, {
        ...current,
        [key]: { import: modules },
    });
}