babel

I started studying Webpack, in the article the author installs Babel, babel-core, babel-loader, etc. then explains what's wha ... that converts JSX to JavaScript. " But I'm not do you understand what Presets or Presets are? what is it and what is it for?

A website was created using gulp. The trouble is that in IE, the scripts do not work, although it seems that everything you n ... /*.php' ]).on('change', browserSync.reload); }); gulp.task('default', gulp.series('compileCSS', 'compileJS', 'watch'));

I added Truncate-react to my project after that, react asked me to install @babel/plugin-proposal-class-properties, which I d ... roperties I installed with the label --save-dev But after all this, I still get knocked out by an error that looks like this

The problem is that the babel-eslint linter swears at private methods in the classes: Parsing error: This experimental syntax ... -private-methods and @babel/plugin-proposal-class-properties, naturally not forgetting to add them in the file .babelrc.json.

Installed packages npm install --save-dev gulp-babel babel-core babel-preset-env Next, the dependencies from the package. ... ch('app/*.html', browserSync.reload); gulp.watch('app/js/*.js', browserSync.reload); }); And the structure of the project

Configured webpack + babel as follows Webpack.config.js ... module: { rules: [ { test: /\.(js|jsx)$/, ... I run everything ok in chrom, in IE 11 it gives an error The object does not support the "assign" property or method

Hello. I'm starting to learn JavaScript, I wrote code using ECMAScript 2015. In all browsers, everything worked. Do I need to use Babel now to turn the code from ES6 to ES5, or is it no longer relevant? Thanks.

@babel/stage-x removed in Babel 7+ Which preset to connect to .babelrc that would work import/export from es6 I use webpack 4 ... "node": "current", }, "useBuiltIns": 'entry' }], "@babel/react" ] } Mistake

I want to generate several variants of js on the site (es5, es2015, es2016), and give the client the necessary file with js, ... he user agent, and understand by it whether this browser supports es2015, or not, maybe there is some php a library for this?

Error in ./REST_R/frontend/src/components/App.js 7:4 Module parse failed: Unexpected token (7:4) You may need an appropr ... ", "webpack": "^4.16.2", "webpack-cli": "^3.1.0" }, "dependencies": { "babel-preset-es2015": "^6.24.1" } }