import and call a function with es6 [duplicate]
You’ll need two lines: import debugModule from ‘debug’; const debug = debugModule(‘http’); The import syntax is a declarative import syntax, it does not execute any functions.
babeljs
using the … spread syntax in javascript es6 named exports
Object rest spread is stage 3 proposal and not a part of any spec (will probably be included in ES2018). More importantly, export has syntax that mimics existing JS syntax but doesn’t interpret { … } as an expression. export syntax was strictly defined because ES2015 modules are supposed to be statically analyzed. This is … Read more
Is it possible to call a super setter in ES6 inherited classes?
class Y extends X { constructor(name) { super(name); } set name(name) { super.name = name; this._name += “Y”; } } will override the name properly with an accessor for just the setter, with no getter. That means your y.name === “hiXY” will fail because y.name will return undefined because there is no getter for name. … Read more
what is the difference between import and const and which is preferred in commonjs
What is the preferred method and what is the difference between using const and import? In 2016 it makes sense to stick with the import since that’s the part of the standard. There is no technical reason to prefer import over require though: everything that can be done using require can be done with import … Read more
Uncaught Error: Cannot find module ‘react/jsx-runtime’
This solution resolved my issue. I found it over here 👇️ with NPM npm install react@latest react-dom@latest 👇️ ONLY If you use TypeScript npm install –save-dev @types/react@latest @types/react-dom@latest ———————————————- 👇️ with YARN yarn add react@latest react-dom@latest 👇️ ONLY If you use TypeScript yarn add @types/react@latest @types/react-dom@latest –dev
Is Babel still required in 2018? [closed]
Babel is a JavaScript-to-JavaScript compiler, sometimes called a transpiler, that converts code written with one set of features (for instance, those in ES2015 and later) into code that can be run in a JavaScript environment that doesn’t support those features. (There are others, Babel is just one quite popular one.) Whether you use Babel to … Read more
Dynamic Imports for Code Splitting cause: ESLint Parsing Error ‘import’
.eslintrc.js parserOptions: { parser: ‘babel-eslint’, sourceType: ‘module’, allowImportExportEverywhere: true } Should Be: parser: ‘babel-eslint’, parserOptions: { sourceType: ‘module’, allowImportExportEverywhere: true } Source: https://eslint.org/docs/user-guide/configuring#specifying-parser With (@vue/cli) .eslintrc.json { “parser”: “vue-eslint-parser”, “parserOptions”: { “parser”: “babel-eslint”, “ecmaVersion”: 8, “sourceType”: “module” } }
babel-jest doesn’t handle ES6 within modules
By default any code in node_modules is ignored by babel-jest, see the Jest config option transformIgnorePatterns. I’ve also created a PR on your example repo, so you can see it working. While this works, I’ve found it to be extremely slow in real applications that have a lot of dependencies containing ES modules. The Jest … Read more
React/Typescript /VScode – an import path cannot end with a ‘.tsx’ extension
I’m sorry to say that I doubt you are going to be able to resolve this in the way you desire. TypeScript (specifically TSC) disallows explicit extensions for ts/tsx files… It has to do with implicit file extensions in imports, and how ts/tsx files are compiled down to js/jsx files. The world may not be … Read more
Difference between plugins and presets in .babelrc
tl;dr Presets are just a collection of plugins. You can include plugins individually in the plugins array, or collection of plugins in the presets array. If a plugin is part of a collection (preset), you don’t have to include it individually in plugins. The same goes for npm packages when you include them in package.json. … Read more