aureooms/rejuvenate

import update from '../lib/update.js';

export default function addPackageJSONKey(key, value) {
    return {
        async postcondition({readPkg, assert}) {
            const pkgjson = await readPkg();
            assert.deepStrictEqual(pkgjson[key], value);
        },

        async precondition({readPkg, assert}) {
            const pkgjson = await readPkg();
            assert(pkgjson[key] === undefined);
        },

        async apply({readPkg, writePkg, fixConfig}) {
            await update({
                read: readPkg,
                write: writePkg,
                edit(pkgjson) {
                    pkgjson[key] = value;
                    return pkgjson;
                },
            });
            await fixConfig();
        },
    };
}