gulp - gulp：PostCSS 失败 - postcss 版本高于 postcss-import 的版本

Question

我正在尝试使用 Gulp 用 PostCss 转换我的 css。

当我将 cssnext 插件添加到 PostCss 时，出现以下错误：

Unknown error from PostCSS plugin. Your current PostCSS version is 6.0.19, but postcss-import uses 4.1.16. Perhaps this is the source of the error below.

这是我的gulpfile.js：

const gulp = require('gulp');
const postcss = require('gulp-postcss');
const concat = require('gulp-concat');

gulp.task('styles', function() {

    const postCssPlugins = [
        require('cssnext')()
    ];

    gulp.src('src/css/*.css')
        .pipe(postcss(postCssPlugins))
        .pipe(concat('style.css'))
        .pipe(gulp.dest('.'));
});

完整的堆栈跟踪：

events.js:183
  throw er; // Unhandled 'error' event
  ^
TypeError: styles.eachAtRule is not a function
at parseStyles (C:\gulp-test\node_modules\cssnext\node_modules\postcss-import\index.js:134:10)
at C:\gulp-test\node_modules\cssnext\node_modules\postcss-import\index.js:84:30
at LazyResult.run (C:\gulp-test\node_modules\postcss\lib\lazy-result.js:277:20)
at LazyResult.asyncTick (C:\gulp-test\node_modules\postcss\lib\lazy-result.js:192:32)
at processing.Promise.then._this2.processed (C:\gulp-test\node_modules\postcss\lib\lazy-result.js:231:20)
at new Promise (<anonymous>)
at LazyResult.async (C:\gulp-test\node_modules\postcss\lib\lazy-result.js:228:27)
at LazyResult.then (C:\gulp-test\node_modules\postcss\lib\lazy-result.js:134:21)
at process._tickCallback (internal/process/next_tick.js:188:7)

据我所知，postcss-import 包是 cssnext 的一个依赖。所以我该怎么做？

Answer 1

我找到了答案：

根据 cssnext 的网站，包 cssnext （我使用的）已经死了。与 PostCSS 一起使用的新包是postcss-cssnext：

const postCssPlugins = [
    require('postcss-cssnext')()
];