[英]React: sass-loader not transpiling SCSS into CSS
I have a react
app with CSS
files working fine.我有一个react
应用程序,其中CSS
文件工作正常。
I need to start using SCSS
so the following changes:我需要开始使用SCSS
进行以下更改:
node-sass
and sass-loader
安装node-sass
和sass-loader
.css
to .scss
将导入从.css
更改为.scss
.css
to .scss
将文件扩展名从.css
更改为.scss
But my pages are not loading properly:但是我的页面没有正确加载:
Current behavior:当前行为:
Expected behavior:预期行为:
My code:我的代码:
package.json
{
"name": "frontend",
"version": "0.1.0",
"private": true,
"dependencies": {
"@coreui/coreui": "^3.0.0",
"@stardust-ui/docs-components": "^0.40.0",
"axios": "^0.19.0",
"bootstrap": "^4.4.1",
"compass": "^0.1.1",
"css-loader": "^3.4.2",
"mdbreact": "^4.25.4",
"prettier": "^1.6.1",
"prop-types": "^15.7.2",
"react": "^16.10.2",
"react-bootstrap": "^1.0.0-beta.16",
"react-bootstrap-sidebar": "0.0.1",
"react-dom": "^16.10.2",
"react-fixed-bottom": "^1.0.2",
"react-modal": "^3.11.1",
"react-rangeslider": "^2.2.0",
"react-router-dom": "^5.1.2",
"react-scripts": "^1.1.5",
"reconnecting-websocket": "^4.2.0",
"reconnectingwebsocket": "^1.0.0",
"semantic-ui-react": "^0.88.2",
"style-loader": "^1.1.3",
"styled-components": "^4.4.1"
},
"scripts": {
"start": "PORT=3000 react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test --env=jsdom",
"eject": "react-scripts eject"
},
"devDependencies": {
"node-sass": "^4.13.1",
"sass-loader": "^8.0.2"
}
}
I injected the code for the loaders in node_modules/react-scripts/config/webpack.config.dev.js like this:我在 node_modules/react-scripts/config/webpack.config.dev.js 中注入了加载程序的代码,如下所示:
// Process JS with Babel.
{
test: /\.(js|jsx|mjs)$/,
include: paths.appSrc,
loader: require.resolve('babel-loader'),
options: {
// @remove-on-eject-begin
babelrc: false,
presets: [require.resolve('babel-preset-react-app')],
// @remove-on-eject-end
// This is a feature of `babel-loader` for webpack (not Babel itself).
// It enables caching results in ./node_modules/.cache/babel-loader/
// directory for faster rebuilds.
cacheDirectory: true,
},
},
{
test: /\.scss$/,
loader: [
"css-loader",
"sass-loader"
]
},
Here is my component:这是我的组件:
import React, { Component } from "react";
import '../../../general.scss';
import { Warning } from '../../../images/images_svg';
class Terminos extends Component{
state = { error: false }
saveAndContinue = () => {
if(this.props.values.terminos) {
this.props.nextStep()
}
else {
console.log(this.props.values.terminos_error)
this.props.mandar_error('terminos_error')
}
}
render() {
return (
<div className="formulario">
<div className="formulario-seccion-titulo">
<div className="formulario-seccion-barrita"/>
<div className="formulario-seccion-content">
Presentacion
</div>
</div>
<div className={this.props.values.terminos_error ? "formulario-seccion" : "formulario-seccion-red"}>
La actual pandemia que afecta al mundo trae consecuencias a nivel sanitario, económico y social. Lo que está ocurriendo con el COVID impacta de lleno, no sólo en la salud física de las personas, sino que también afecta de forma clara y contundente su salud mental.<br/><br/>
Ud. puede decidir si contestar o no la encuesta que sigue pero de hacerlo,acepta que los resultados de la misma sean compartidos con su empleador con el único fin de brindarle contención y asistencia. La encuesta debe completarse en las próximas 10 horas.<br/><br/>
<input type="checkbox"
id="terminos"
className="formulario-checkbox"
onChange={() => this.props.handleTerminos()}
checked={this.props.values.terminos}
/>
<label className="formulario-checkbox-label" htmlFor="terminos">
Acepto terminos y condiciones.
</label>
{this.props.values.terminos_error===false &&
<div className="formulario-seccion-error">
<div className="formulario-seccion-error-logo" >
<Warning color="#d93025"/>
</div>
Debes aceptar los terminos y condiciones para continuar
</div>
}
</div>
<div className="formulario-footer">
<button className="formulario-botones" onClick={this.saveAndContinue}>Siguiente</button>
</div>
</div>
)
}
}
export default Terminos;
If I change the import and the file extension from .scss
to .css
the page load properly.如果我将导入和文件扩展名从.scss
更改为.css
页面加载正确。
I´m using npm start
to develop and testing the code.我正在使用npm start
开发和测试代码。
Have you created project with Create-React-App?您是否使用 Create-React-App 创建了项目? In this case, you don't need sass-loader , you just need node-sass , and import your CSS style into your root file with.scss/sass extension, for example, import '../example.scss'
, then need to configure webpack.config.js at all.在这种情况下,您不需要sass-loader ,您只需要node-sass ,并将您的 CSS 样式导入您的根文件,扩展名为 .scss/sass ,例如import '../example.scss'
,然后完全需要配置 webpack.config.js 。
Please provide more information.请提供更多信息。
Have a nice day.祝你今天过得愉快。
Webpack
has seen tremendous changes up untilversion 4
Webpack
在version 4
之前已经看到了巨大的变化
When we use create-react-app
, it installs a compatible version of Webpack
that react-scripts
utilizes to bundle your files and serves them using Webpack-server
as the dev server when you run npm start
.当我们使用create-react-app
时,它会安装Webpack
的兼容版本,当您运行npm start
时, react-scripts
会利用该版本来捆绑您的文件并使用Webpack-server
作为开发服务器提供它们。
Remove "webpack": "^3.11.0"
from your package.json
since it's already installed by react-scripts
.从package.json
中删除"webpack": "^3.11.0"
,因为它已经由react-scripts
安装。
Also react 16+
often works with react-scripts 3+
so if you manually edited some of this package.json
file, i recommend you leave the defaults installed by create-react-app
and just add your other dependencies
. react 16+
通常与react-scripts 3+
一起使用,因此如果您手动编辑了一些package.json
文件,我建议您保留由create-react-app
安装的默认值,然后添加其他dependencies
项。
Otherwise, here's What Webpack says about loaders .否则,这就是 Webpack 关于 loaders的说法。
Ok, I solved it deleting the node-modules folder, the package-lock.json and all my dependencies in the package.json.好的,我解决了它删除节点模块文件夹,package-lock.json 以及我在 package.json 中的所有依赖项。 Then I reinstalled all my dependencies with npm install...
.然后我用npm install...
重新安装了所有依赖项。 I think the problem was the react-scripts module, i upgraded from version 1.1.5 to 3.4.1.我认为问题出在 react-scripts 模块,我从版本 1.1.5 升级到了 3.4.1。 Thank you all for your answers.谢谢大家的答案。
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