![]() HMR can be used with instead of module.hot. ![]() Named exports are not available.ĬommonJs Syntax is not available: require, module, exports, _filename, _dirname. Only the "default" export can be imported from non-ESM. *.js or *.mjs) unless you have the behaviour disabled with fullySpecified=false. The new JavaScript features in ECMAScript 2021 are: Numeric separators. There are some useful and awesome features that have been incorporated and could be used in our javascript projects. Relative requests must include a filename and file extension (e.g. ECMAScript 2021 is the version of ECMAScript corresponding to this year. ![]() Imports in ESM are resolved more strictly. In addition to the module format, flagging modules as ESM also affect the resolving logic, interop logic and the available symbols in modules. In DataURIs using the text/javascript or application/javascript mime type will also force module type to ESM. cjs extension.mjs will force them to be ESM. In addition to that, files can set the module type by using. The export keyword allows to expose things from an ESM to other modules: export const CONSTANT = 42 export let variable = 42 // only reading is exposed // it's not possible to modify the variable from outside export function fun ( ) ![]() Webpack supports processing ECMAScript Modules to optimize them. It's supported by all modern browsers and the recommended way of writing modular code for the Web. ECMAScript Modules (ESM) is a specification for using Modules in the Web. ![]()
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