skipOnWindows(plugin, async () => {
   const cwd = path.join(__dirname, '../../tmp/plugin', plugin)
   await fs.remove(cwd)
   const pkg = await readPkg(path.join(__dirname, '../../node_modules', plugin, 'package.json'))
   await execa('git', ['clone', pkg.repository.url.split('+')[1], cwd])
   const opts = {cwd, stdio: [0, 1, 2]}
   await execa('git', ['checkout', `v${pkg.version}`], opts)
   await execa('yarn', [], opts)
   await execa('yarn', ['test'], opts)
 })

const getTextlintDependencyNames = (dir: string): Promise<Array<string>> => {
    return readPkg(dir)
        .then((pkg: any) => {
            const dependencies = pkg.dependencies || {};
            const devDependencies = pkg.devDependencies || {};
            const mergedDependencies = ObjectAssign({}, dependencies, devDependencies);
            const pkgNames = Object.keys(mergedDependencies);
            return pkgNames.filter(pkgName => {
                const ruleOrFilter =
                    pkgName.indexOf(TextlintPackageNamePrefix.filterRule) !== -1 ||
                    pkgName.indexOf(TextlintPackageNamePrefix.rule) !== -1;
                if (pkgName === "textlint-rule-helper") {
                    return false;
                }
                return ruleOrFilter;
            });
        })
        .catch(() => {
            return [];
        });
};

export function readPackageJson(dir: string) {
  return readPkg(dir, { normalize: false });
}