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‎.editorconfig‎

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root = true
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[*]
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indent_style = space
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indent_size = 2
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end_of_line = lf
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charset = utf-8
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trim_trailing_whitespace = true
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insert_final_newline = true
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[*.{json,yml}]
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indent_size = 2

‎.gitignore‎

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node_modules/
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npm-debug.log
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yarn-error.log
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package-lock.json

‎.npmignore‎

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.npmignore
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.gitignore
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.editorconfig
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node_modules/
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npm-debug.log
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yarn.lock
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*.test.js
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.travis.yml

‎.travis.yml‎

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language: node_js
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cache: yarn
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node_js:
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- stable
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- "6"
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- "4"

‎LICENSE‎

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The MIT License (MIT)
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Copyright (c) 2018-present, 美团点评
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.

‎README.md‎

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# PostCSS Wxss
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[PostCSS] plugin for wxss.
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专门为 wxss 格式化处理的的一个 postcss 插件，特别是在做 css 转 wxss 的时候好用到爆。
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## 实现的功能
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- 清理 wxss 不支持的选择器。
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- 清理 wxss 不支持的注释。
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- 转换 rem 单位到 rpx。
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- 转换 Web 的标签选择器到小程序的 class 选择器。
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- style scoped（postcss插件部分）。
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``` css
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/* 被清理 */
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* {
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margin: 100px
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}
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/* 保持原样 */
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view {
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width: 50rpx;
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}
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.container {
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width: 7.5rem;
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font-size: .24rem
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}
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/* Web 标签转换 */
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div {
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width: 50rpx;
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}
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ul li {
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width: 50rpx;
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}
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body {
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width: 50rpx;
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}
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```
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``` css
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view {
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width: 50rpx;
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}
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.container {
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width: 50rpx;
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font-size: 24.4rpx
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}
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._div {
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width: 50rpx;
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}
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._ul ._li {
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width: 50rpx;
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}
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page {
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width: 50rpx;
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}
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```
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## Usage
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```js
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postcss([ require('postcss-mpvue-wxss') ])
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```
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or use `.postcssrc.js`
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```
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// https://github.com/michael-ciniawsky/postcss-load-config
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const optopns = {}
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module.exports = {
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"plugins": {
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// to edit target browsers: use "browserslist" field in package.json
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"postcss-mpvue-wxss": optopns
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}
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}
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```
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with options:
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```
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const replaceTagSelectorMap = require('postcss-mpvue-wxss/lib/wxmlTagMap')
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const optopns = {
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cleanSelector: ['*'],
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remToRpx: 100,
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replaceTagSelector: Object.assign(replaceTagSelectorMap, {
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'*': 'view, text' // 将覆盖前面的 * 选择器被清理规则
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})
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}
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```
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更多详细文档请查阅 [postcss-mpvue-wxss](http://mpvue.com/build/postcss-mpvue-wxss)。
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bug 或者交流建议等请反馈到 [mpvue/issues](https://github.com/Meituan-Dianping/mpvue/issues)。
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See [PostCSS] docs for examples for your environment.
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[PostCSS]: https://github.com/postcss/postcss
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‎index.js‎

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// postcss-mpvuew-wxss.js
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// https://github.com/postcss/postcss/blob/master/docs/writing-a-plugin.md
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const postcss = require('postcss');
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const selectorParser = require('postcss-selector-parser');
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const replaceTagSelector = require('./lib/wxmlTagMap');
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const defConfig = {
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cleanSelector: ['*'],
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remToRpx: 100,
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replaceTagSelector
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};
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const remReg = /(\d*\.?\d+)rem/ig;
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const replaceRemOption = { fast: 'rem' };
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module.exports = postcss.plugin('postcss-mpvue-wxss', function (options) {
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// Work with options here
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options = Object.assign({}, defConfig, options);
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return function (root) {
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// Transform CSS AST here： root, result
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root.walkRules(rule => {
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const { selector } = rule || {};
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// rem 转换 rpx
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rule.replaceValues(remReg, replaceRemOption, str => {
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return options.remToRpx * parseFloat(str) + 'rpx';
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});
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rule.selector = selectorParser(function (selectors) {
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selectors.each(function (selector) {
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selector.each(function (n) {
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// 转换 tag 选择器
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if (n.type === 'tag') {
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const k = n.value;
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const v = options.replaceTagSelector[k];
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if (v) {
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n.value = v === 'replaceToClass' ? `._${k}` : v;
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}
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}
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// 清理不支持的选择器
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if (options.cleanSelector.includes(n.value)) {
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// return n.value = 'view';
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return rule.remove()
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}
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})
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})
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}).process(selector).result;
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});
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// 清理所有的注释
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root.walkComments(comment => {
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comment.remove();
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});
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};
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});

‎lib/wxmlTagMap.js‎

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// This map form [mpvue](https://github.com/Meituan-Dianping/mpvue) src/platforms/mpvue/compiler/codegen
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module.exports = {
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'br': 'replaceToClass',
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'hr': 'replaceToClass',
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'p': 'replaceToClass',
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'h1': 'replaceToClass',
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'h2': 'replaceToClass',
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'h3': 'replaceToClass',
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'h4': 'replaceToClass',
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'h5': 'replaceToClass',
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'h6': 'replaceToClass',
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'abbr': 'replaceToClass',
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'address': 'replaceToClass',
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'b': 'replaceToClass',
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'bdi': 'replaceToClass',
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'bdo': 'replaceToClass',
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'blockquote': 'replaceToClass',
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'cite': 'replaceToClass',
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'code': 'replaceToClass',
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'del': 'replaceToClass',
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'ins': 'replaceToClass',
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'dfn': 'replaceToClass',
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'em': 'replaceToClass',
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'strong': 'replaceToClass',
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'samp': 'replaceToClass',
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'kbd': 'replaceToClass',
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'var': 'replaceToClass',
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'i': 'replaceToClass',
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'mark': 'replaceToClass',
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'pre': 'replaceToClass',
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'q': 'replaceToClass',
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'ruby': 'replaceToClass',
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'rp': 'replaceToClass',
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'rt': 'replaceToClass',
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's': 'replaceToClass',
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'small': 'replaceToClass',
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'sub': 'replaceToClass',
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'sup': 'replaceToClass',
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'time': 'replaceToClass',
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'u': 'replaceToClass',
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'wbr': 'replaceToClass',
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// 表单元素
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'form': 'replaceToClass',
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'input': 'replaceToClass',
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'textarea': 'replaceToClass',
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'button': 'replaceToClass',
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'select': 'replaceToClass',
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'option': 'replaceToClass',
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'optgroup': 'replaceToClass',
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'label': 'replaceToClass',
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'fieldset': 'replaceToClass',
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'datalist': 'replaceToClass',
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'legend': 'replaceToClass',
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'output': 'replaceToClass',
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// 框架
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'iframe': 'replaceToClass',
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// 图像
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'img': 'replaceToClass',
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'canvas': 'replaceToClass',
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'figure': 'replaceToClass',
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'figcaption': 'replaceToClass',
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// 音视频
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'audio': 'replaceToClass',
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'source': 'replaceToClass',
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'video': 'replaceToClass',
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'track': 'replaceToClass',
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// 链接
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'a': 'replaceToClass',
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'nav': 'replaceToClass',
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'link': 'replaceToClass',
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// 列表
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'ul': 'replaceToClass',
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'ol': 'replaceToClass',
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'li': 'replaceToClass',
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'dl': 'replaceToClass',
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'dt': 'replaceToClass',
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'dd': 'replaceToClass',
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'menu': 'replaceToClass',
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'command': 'replaceToClass',
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// 表格table
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'table': 'replaceToClass',
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'caption': 'replaceToClass',
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'th': 'replaceToClass',
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'td': 'replaceToClass',
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'tr': 'replaceToClass',
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'thead': 'replaceToClass',
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'tbody': 'replaceToClass',
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'tfoot': 'replaceToClass',
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'col': 'replaceToClass',
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'colgroup': 'replaceToClass',
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// 样式 节
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'div': 'replaceToClass',
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'main': 'replaceToClass',
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'span': 'replaceToClass',
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'header': 'replaceToClass',
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'footer': 'replaceToClass',
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'section': 'replaceToClass',
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'article': 'replaceToClass',
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'aside': 'replaceToClass',
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'details': 'replaceToClass',
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'dialog': 'replaceToClass',
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'summary': 'replaceToClass',
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'progress': 'replaceToClass',
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'meter': 'replaceToClass', // todo
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'head': 'replaceToClass', // todo
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'meta': 'replaceToClass', // todo
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'base': 'replaceToClass', // todo
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'map': 'replaceToClass', // TODO不是很恰当
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'area': 'replaceToClass', // j结合map使用
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'script': 'replaceToClass',
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'noscript': 'replaceToClass',
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'embed': 'replaceToClass',
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'object': 'replaceToClass',
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'param': 'replaceToClass',
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'body': 'page',
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'html': 'page'
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}

‎package.json‎

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{
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"name": "postcss-mpvue-wxss",
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"version": "1.0.0",
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"description": "PostCSS plugin for wxss",
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"keywords": [
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"postcss",
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"css",
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"postcss-plugin",
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"wxss"
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],
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"author": "anchengjian <anchengjian@gmail.com>",
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"license": "MIT",
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"repository": "git@github.com:mpvue/postcss-mpvue-wxss.git",
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"homepage": "https://github.com/mpvue/postcss-mpvue-wxss",
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"dependencies": {
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"postcss": "^6.0.8",
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"postcss-selector-parser": "^2.2.3"
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},
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"devDependencies": {
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"jest": "^20.0.0"
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},
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"scripts": {
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"test": "jest test"
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},
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"eslintConfig": {
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"env": {
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"jest": true
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}
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}
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}

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