Tailwind CSS文件很大2.42 MIB我如何使用Laravel减小此文件的大小？

问题描述

Tailwind CSS文件很大2.42 mib，我如何使用laravel减小此文件的大小？

解决方法

最好的策略是使用生成特定于您的特定CSS并将其部署在您自己的CDN上

下面的示例说明了如何为简单的HTML项目配置TailwindCSS

1. 第一步：创建一个package.json文件

import 'package:flutter/material.dart';

class SearchItem<TValue> {
  /// Item value
  final TValue value;

  /// Item display text
  final String text;

  SearchItem(this.value,this.text);
}

class SearchPage extends StatefulWidget {
  final List<SearchItem> data;
  final Icon icon;
  final TextStyle textStyle;
  final Color color;
  final EdgeInsetsGeometry padding;
  final String title;

  SearchPage(
      {this.data,this.icon,this.textStyle,this.padding,this.color,this.title});

  @override
  State<StatefulWidget> createState() {
    return new _SearchPageState();
  }
}

class _SearchPageState extends State<SearchPage> {
  TextEditingController controller = new TextEditingController();
  List<SearchItem> _searchList = [];

  List<SearchItem> _dataList = [];
  @override
  void initState() {
    super.initState();
    _dataList = widget.data;
  }

  @override
  void dispose() {
    _searchList.clear();
    controller.dispose();
    super.dispose();
  }

  _onChange(SearchItem selection) {
    Navigator.pop(context,selection);
  }

  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(
        backgroundColor: widget.color,title: new Text(widget.title ?? 'Search Page'),elevation: 0.0,),body: new Column(
        children: <Widget>[
          new Container(
            color: widget.color,child: new Padding(
              padding: widget.padding,child: new Card(
                child: new ListTile(
                  leading: new Icon(Icons.search),title: new TextField(
                    controller: controller,decoration: new InputDecoration(
                        hintText: 'Search',border: InputBorder.none),onChanged: onSearchTextChanged,trailing: new IconButton(
                    icon: new Icon(Icons.cancel),onPressed: () {
                      controller.clear();
                      onSearchTextChanged('');
                    },new Expanded(
            child: _searchList.length != 0 || controller.text.isNotEmpty
                ? new ListView.builder(
                    itemCount: _searchList.length,itemBuilder: (context,i) {
                      return new Card(
                        color: widget.color,child: FlatButton(
                          onPressed: () {
                            Navigator.pop(context,_searchList[i]);
                          },child: new ListTile(
                            leading: widget.icon,title: new Text(_searchList[i].text,style: widget.textStyle),margin: const EdgeInsets.all(0.0),);
                    },)
                : new ListView.builder(
                    itemCount: _dataList.length,index) {
                      return new Card(
                        color: widget.color,child: FlatButton(
                            onPressed: () {
                              _onChange(_dataList[index]);
                            },child: new ListTile(
                              leading: widget.icon,title: new Text(
                                _dataList[index].text,style: widget.textStyle,)),],);
  }

  onSearchTextChanged(String text) async {
    _searchList.clear();
    if (text.isEmpty) {
      setState(() {});
      return;
    }

    _dataList.forEach((userDetail) {
      if (userDetail.text.startsWith(text.toLowerCase()) ||
          userDetail.text.toLowerCase().startsWith(
              text.toLowerCase())) if (_searchList.contains(userDetail) ==
          false) {
        _searchList.add(userDetail);
      }
    });

    setState(() {});
  }
}

class FlutterSearchPanel<TValue> extends StatefulWidget {
  @required
  final Function onChanged;
  @required
  final List<SearchItem<TValue>> data;
  final String title;
  final Icon icon;
  final TextStyle textStyle;
  final Color color;
  final EdgeInsetsGeometry padding;
  final TValue selected;

  FlutterSearchPanel(
      {this.onChanged,this.title,this.data,this.selected,this.color});

  @override
  State<StatefulWidget> createState() {
    return new _FlutterSearchPanelState<TValue>();
  }
}

class _FlutterSearchPanelState<TValue>
    extends State<FlutterSearchPanel<TValue>> {
  SearchItem<TValue> selection;
  final _defaultIcon = Icons.label;
  final TextStyle _defaultTextStyle =
      new TextStyle(color: Colors.red,fontSize: 22.0);
  final Color _defaultColor = Colors.red;
  final EdgeInsetsGeometry _defaultPadding = EdgeInsets.all(10.0);

  @override
  void initState() {
    super.initState();
    if (widget.selected != null) {
      selection = widget.data.firstWhere(
          (item) => item.value == widget.selected,orElse: () => selection = widget.data[0]);
    } else {
      selection = widget.data[0];
    }
  }

  @override
  void dispose() {
    super.dispose();
  }

  _openSearchPage() async {
    final result = await Navigator.push(
      context,MaterialPageRoute(
          builder: (context) => SearchPage(
              title: widget.title,data: widget.data,icon: widget.icon ?? _defaultIcon,padding: widget.padding ?? _defaultPadding,color: widget.color ?? _defaultColor,textStyle: widget.textStyle ?? _defaultTextStyle)),);

    if (result != null) {
      setState(() {
        selection = result;
      });
      if (widget.onChanged != null) {
        widget.onChanged((result as SearchItem<TValue>).value);
      }
    }
  }

  @override
  Widget build(BuildContext context) => new InkWell(
        onTap: _openSearchPage,child: SizedBox(
          //height: MediaQuery.of(context).size.height,child: Container(
            decoration: BoxDecoration(border: Border.all(color: Colors.black)),child: Text(
              selection.text,textAlign: TextAlign.right,style: widget.textStyle ?? Theme.of(context).textTheme.button,);
}

class SuspendedListPicker extends StatefulWidget {
  SuspendedListPicker({
    Key key,this.onChanged,}) : super(key: key);

  List<SearchItem<int>> data = [];
  final Function onChanged;

  @override
  _SuspendedListPickerState createState() => _SuspendedListPickerState();
}

class _SuspendedListPickerState extends State<SuspendedListPicker> {
  @override
  Widget build(BuildContext context) {
    return Container(
        width: MediaQuery.of(context).size.width * 0.55,child: FlutterSearchPanel<int>(
          title: "Selecione",//padding: EdgeInsets.all(10.0),icon: Icon(Icons.label,color: Colors.blue[300]),color: Colors.white,textStyle: TextStyle(color: Colors.black,fontSize: 28.0),onChanged: (value) {
            widget.onChanged(value);
          },));
  }
}

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',theme: ThemeData(
        primarySwatch: Colors.blue,visualDensity: VisualDensity.adaptivePlatformDensity,home: MyHomePage(title: 'Flutter Demo Home Page'),);
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key,this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int currentValue;
  List<SearchItem<int>> data = [
    SearchItem(0,'This'),SearchItem(1,'is'),SearchItem(2,'a'),SearchItem(3,'test'),SearchItem(4,'.'),];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,children: <Widget>[
            SuspendedListPicker(
              data: data,onChanged: (value) {
                setState(() {
                  currentValue = value;
                });
              },Text('current value $currentValue'),);
  }
}

1. 添加tailwindcss postcss-cli和autoprefixer

yarn init

纱线添加tailwindcss postcss-cli自动前缀-D

1. 为TailwindCSS创建默认配置文件

yarn add tailwindcss postcss-cli autoprefixer -D

1. 创建一个postcss.config.js文件

npx tailwind init tailwind.js -full

1. 编辑postcss.config.js

touch postcss.config.js

1. 创建如下的tailwind.css

const tailwindcss = require('tailwindcss');
module.exports = {
    plugins: [
        tailwindcss('./tailwind.js'),require('autoprefixer')
    ],purge: [
    './src/**/*.html',};

1. 使用postcss生成样式表style.css

@import "tailwindcss/base";

@import "tailwindcss/components";

@import "tailwindcss/utilities";

1. 在项目中使用样式表

npx postcss tailwind.css -o style.css

1. 在CDN上部署style.css

（可能的CDN：CloudFront / Netlify）

,

编辑您的 tailwind.config.js 并设置 purge.enabled = true：

const tailwindcss = require('tailwindcss');
module.exports = {
 purge: {
    enabled: true,content: ['./src/**/*.{vue,js,ts,jsx,tsx}']
  },...
};

Tailwind CSS - Optimizing for Production

,

简单，请勿使用。从概念上讲，Tailwind在CDN中非常大且无法使用，而不会丢失其具有的最佳功能。

通过CDN使用Tailwind

您无法自定义Tailwind的默认主题

您不能使用任何指令，例如@ apply，@ variants等。

您无法启用分组悬停之类的功能

您无法安装第三方插件

您不能摇晃未使用的样式

@ https://tailwindcss.com/docs/installation#using-tailwind-via-cdn

如果使用它，请确保正确配置css / js文件的导航器缓存时间，否则您的网站用户会感到不舒服。