.then(function () {
if (package_json) {
return fs
.readJSON(package_path)
.then(function (origin_json) {
return fs.writeFile(package_path, Object.assign({}, origin_json, package_json), {
space: ' '
});
})
}
})
.then(function (file_stat) {
if (file_stat) {
return fs.readJSON(file_stat.abs_path)
}
throw new Error('package does"t exist.')
})