Gulp

安装

npm i -D gulp-purgecss
npm install --save-dev gulp-purgecss

用法

默认情况下，purgecss 输出的源 CSS 删除了未使用的选择器

const gulp = require('gulp')
const purgecss = require('gulp-purgecss')

gulp.task('purgecss', () => {
    return gulp.src('src/**/*.css')
        .pipe(purgecss({
            content: ['src/**/*.html']
        }))
        .pipe(gulp.dest('build/css'))
})

通过设置 rejected 选项，你可以“反转”输出以仅列出已删除的选择器

const gulp = require('gulp')
const rename = require('gulp-rename')
const purgecss = require('gulp-purgecss')

gulp.task('purgecss-rejected', () => {
    return gulp.src('src/**/*.css')
        .pipe(rename({
            suffix: '.rejected'
        }))
        .pipe(purgecss({
            content: ['src/**/*.html'],
            rejected: true
        }))
        .pipe(gulp.dest('build/css'))
})