汇总插件postcss无法运行？

Question

运行postcss -c postcss.config.js时，文件将被处理。

当我使用rollup-plugin-postcss' plugin, it is not — this is the last plugin in my rollup.config.js`运行汇总时：

    postcss({
        config: {
            path: __dirname + 'postcss.config.js'
        }
      })

节点-v = v12.4.0 npm -v 6.9.0 OSX 10.14.5（18F132）

"postcss-cli": "2.6.0",
"postcss-cssnext": "2.10.0",
"postcss-discard-comments": "2.0.4",
"postcss-discard-empty": "2.1.0",
"postcss-import": "8.1.2",
"postcss-reporter": "1.4.1",
"rollup-plugin-postcss": "^2.0.3",