Key takeaways. Optional chanining ?. The SWC CLI is designed to be a drop-in replacement for Babel: $ npx babel # old $ npx swc # new. GitHub is broken because of optional chaining (?.) (Instead, install @babel/cli or @babel/core .) JS Optional Chaining Polyfill? Optional chaining in vanilla JS | Go Make Things JS Optional Chaining Polyfill? : webdev - reddit Add @babel/plugin-proposal-optional-chaining (https://git.io/vb4Sk) to the 'plugins' section of your Babel config to enable transformation. I'm really not excited for optional chaining: the coffeescript codebases where I've seen it used extensively largely had much worse null handling, architecturally. is a safe way to access nested object properties, even if an intermediate property doesn't exist. Old browsers may need polyfills . The optional chaining operator #. Described here is a step ahead, over this, on how to replace a specific if..else chaining with an elegant looking block using Optionals. Optional Chaining (ES2020) Nullish Coalescing (ES2020) Class Fields and Static Properties (part . Before ES11 the largest . . and nullish coalescing (? Optional chaining is one of those simple-but-effective nice things that just make life a little easier for JS lovers. I'm not sure if Babel solves this to be honest. Jim worked on confirming the issue and documented how he got to the bottom of it: " […] well it can't be a browser issue. via the promise.prototype.finally npm package). Optional chaining is a browser-native way to chain methods or properties, and conditionally continue down the chain if the value is not null or undefined. Today we are going to explore a new topic of modern javascript (polyfills are always there ) Optional chaining ('?.') @babel/plugin-syntax-optional-chaining · Babel Optional chaining '?.' và nullish coalescing operator '??' trong ... "classic" Imports copied from the latest @babel/polyfill package (before it was deprecated). Mar 2, 2020 at 12:15. CedrikNikita mentioned this issue. I have the same problem. In the above statement, we combined the use of optional chaining and nullish coalescing to achieve the same result that we were getting by using lodash or making the use of && and || operators. Why you don't need Babel - LogRocket Blog Switched to es2016 and Parcel no longer complained. mentioned this issue. Until it gets . If you take a look at @babel/plugin-proposal-optional-chaining, this is how babel will transpile it. Learn about the optional chaining (?.) webpack then tries to load the babel package instead of the babel-loader. Đã sao chép ️. The optional chaining ?. @babel/plugin-proposal-optional-chaining

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