@mirari/mp-common
Version:
小程序公共库
110 lines (96 loc) • 2.62 kB
JavaScript
import path from 'path'
import gulp from 'gulp'
// import less from 'gulp-less'
import sass from 'gulp-sass'
import cleanCSS from 'gulp-clean-css'
import rename from 'gulp-rename'
import postcss from 'gulp-postcss'
import cssnano from 'gulp-cssnano'
import util from 'gulp-util'
import through2 from 'through2'
import autoprefixer from 'autoprefixer'
// 配置环境
const ENV = process.env.NODE_ENV
const isDev = ENV === 'development' || ENV === 'dev'
const isProd = ENV === 'production' || ENV === 'prod'
const buildPath = path.join('dist')
const format = isProd ? false : 'beautify'
const width = 750 // 设计稿屏幕宽度
const ratio = 750 /width
/**
* 自定义插件 - px to rpx
*/
const px2Rpx = () => {
// 正则匹配
const pxReplace = (value = '') => {
const pxRegExp = /(\d*\.?\d+)px/ig
const pxReplace = (strArg) => {
const str = parseFloat(strArg)
return str === 0 ? 0 : `${ratio * str}rpx`
}
return value.replace(pxRegExp, pxReplace)
}
return through2.obj(function(file, encoding, cb) {
// 如果文件为空,不做任何操作,转入下一个操作,即下一个pipe
if (file.isNull()) {
this.push(file)
return cb()
}
// 插件不支持对stream直接操作,抛出异常
if (file.isStream()) {
this.emit('error', new util.PluginError('px2Rpx', 'Streaming not supported'))
return cb()
}
// 内容转换,处理好后,再转成 Buffer 形式
const content = pxReplace(file.contents.toString())
file.contents = typeof Buffer.from === 'function' ? Buffer.from(content) : new Buffer(content)
// 下面这两句基本是标配,可参考 through2 的 API
this.push(file)
cb()
})
}
gulp.task('build:styles', () => {
gulp
.src(['src/**/*.wxss'], { base: 'src' })
.pipe(sass())
.pipe(px2Rpx())
.pipe(postcss())
.pipe(cleanCSS({ format }))
// .pipe(
// cssnano({
// zindex: false,
// autoprefixer: false,
// discardComments: { removeAll: true },
// })
// )
.pipe(
rename((path) => (path.extname = '.wxss'))
)
.pipe(gulp.dest(buildPath))
})
gulp.task('build:example', () => {
gulp
.src(
[
'src/**',
'!src/**/*.wxss',
'!src/icon/fonts/**',
], { base: 'src' },
)
.pipe(gulp.dest(buildPath))
})
gulp.task('watch', () => {
gulp.watch('src/**', [
'build:styles',
'build:example',
])
})
gulp.task('default', [
'watch',
'build:styles',
'build:example',
])
gulp.task('build', [
'build:styles',
'build:example',
])