如何将PostCSS集成到Broccoli angular-cli Build中

Question

似乎

这个构建脚本正在运行，但输出的CSS没有缩小或自动前缀。我正在尝试编译 SASS，然后通过带有 Broccoli 和 angular-cli 的 Post CSS 运行输出。我想也许一些余烬的人也可以提供帮助。我做错了什么？

构建在终端中输出以下内容：

Slowest Trees                                 | Total               
----------------------------------------------+---------------------
BroccoliTypeScriptCompiler                    | 1274ms              
vendor                                        | 502ms               
PostcssFilter | 465ms        

但是CSS与从SASS输出的相同，而不是Post CSS。

这是我的角度剪辑构建.js：

'use strict';
/* global require, module */

const Angular2App = require('angular-cli/lib/broccoli/angular2-app');
const compileSass = require('broccoli-sass');
const compileCSS = require('broccoli-postcss');
const cssnext = require('postcss-cssnext');
const cssnano = require('cssnano');
const mergeTrees = require('broccoli-merge-trees');
const Funnel = require('broccoli-funnel');
const _ = require('lodash');
const glob = require('glob');

var options =  {
  plugins: [
    {
      module: cssnext,
      options: {
          browsers: ['> 1%'],
          warnForDuplicates: false
      }
    },
    {
      module: cssnano,
      options: {
          safe: true,
          sourcemap: true
      }
    }
  ]
};

module.exports = function(defaults) {
  let sourceDir = 'src';
  let appTree = new Angular2App(defaults, {
      sourceDir: sourceDir,
      sassCompiler: {
        includePaths: [
          'src/style'
        ]
      },
      vendorNpmFiles: [
        'systemjs/dist/system-polyfills.js',
        'systemjs/dist/system.src.js',
        'zone.js/dist/*.js',
        'es6-shim/es6-shim.js',
        'reflect-metadata/*.js',
        'reflect-metadata/*.js.map',
        'rxjs/**/*.js',
        '@angular/**/*.js',
        'rxjs/**/*.js.map',
        '@angular/**/*.js.map',
        'd3/d3.js',
        'three/build/three.js',
        'three/examples/js/postprocessing/*.js',
        'three/examples/js/shaders/*.js'
      ]
    });

    let sass = mergeTrees(_.map(glob.sync('src/**/*.scss'), function(sassFile) {
        sassFile = sassFile.replace('src/', '');
        return compileSass(['src'], sassFile, sassFile.replace(/.scss$/, '.css'));
    }));
    let css = compileCSS(sass, options);
    return mergeTrees([sass, css, appTree], { overwrite: true });
};

Answer 1

这是操作的顺序，我的树没有覆盖appTree！

这行得通！ return mergeTrees([appTree, sass, css], { overwrite: true });