Put your side-effect logic into the callback function, then use the dependencies argument to control when you want the side-effect . https://github.com/acornjs/acorn/blob/master/acorn/CHANGELOG.md. But I’ve got an error, I made a minimum reproduce repo inoyakaigor/webpack-typescript-optional-chaining. Posted 1 week ago # To learn more, see our tips on writing great answers. in the json, code snippet is just mis-aligned) json?.auth?.client_token ^ SyntaxError: Invalid or unexpected token If I remove optional chaining, it's fine. It was there for good reasons. Code quality: a concern for businesses, bottom lines, and empathetic programmers, Updates to Privacy Policy (September 2021). This cookie is set by GDPR Cookie Consent plugin. Thanks to a pull request from community member Wenlu Wang, TypeScript can provide a quick-fix to add missing return statements, remove curly braces, or add parentheses to arrow function bodies that look suspiciously like object literals.. Support for "Solution Style" tsconfig.json Files Editors need to figure out which configuration file a file belongs to so . Fourth dimensional physics. This can be contrasted with the logical OR (||) operator, which returns the right-hand side operand if the left operand is any falsy value, not only null or undefined. It does not store any personal data. Optional chaining was added to node in version 14, so it should work. is a logical operator that returns its right-hand side operand when its left-hand side operand is null or undefined, and otherwise returns its left-hand side operand. Instead, use plugin-proposal-optional-chaining to both parse and transform this syntax.. Optional Chaining とは. TypeScript tip. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. as a temporary solution; callback is the function containing the side-effect logic.callback is executed right after changes were being pushed to DOM. site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". It occurs that optional chaining won't be supported in Webpack 4, so the best course of action would be to update to Webpack 5 or use Babel/TSC for transpilation. For fix this error acornjs/acorn#891 and acornjs/acorn#890 must be merged. But in JavaScript, this can cause unexpected behavior of the code. Making statements based on opinion; back them up with references or personal experience. If your target is ES2019 or further back then typescript will transpile the feature into something that ndoe will understand . In TypeScript 3.9, so long as every type in an intersection is a concrete object type, the type system will consider all of the properties at once. To send the authentication token as part of the request as a header, you can chain the set function to your request. Optional power supply. By clicking “Sign up for GitHub”, you agree to our terms of service and so fix of this issue will be in webpack@5: #10227 (comment) Temporary fixes For Babel. Another recommendation for seasoning the meat? Optional chaining was added in ES2020, which isn't supported by the node.js yet. Learn something new every week! The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". This guide stems from the Getting Started guide.. TypeScript is a typed superset of JavaScript that compiles to plain JavaScript. Podcast 384: Can AI solve car accidents and find you a parking space? . Ask questions [BUG] webpack plugin does not resolve the `? This function uses two parameters. Sign in Already on GitHub? Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. UPD2 we all awaiting while estree/estree/pull/204 will be merged, UPD3 fix for optional chaining landed into acorn 7.3.0 but webpack@4 uses acorn 6.x. Between now and the final release, we expect no further changes apart from critical bug fixes. How to clean the bathtub after cleaning brass instruments. Why do accelerating electrons not emit electromagnetic radiation? Please fix the error: "TypeError: Cannot read property 'id' of undefined.". I want to add optional chaining to my Laravel project. Do I really need to include a light switch in every room? I don't know is it a bug or feature, Description It provides all most all connection/query from SQLite3. Devenez un pro de WordPress ! We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Follow. I searched for 'nodejs null propagation' and initially couldn't find this question. export const double = (number) => number * 2; ^^^^^ SyntaxError: Unexpected token export. This function uses two parameters. Optional Chaining のエラーをもう一度整理. @evilebottnawi Closing the issue because I removed the template looks like excessive bureaucracy. Each rule has emojis denoting: if the "extends": "eslint:recommended" property in a configuration file enables the rule. ['babel-loader', 'ts-loader'] i get Syntax Error: SyntaxError with ?. Earlier it would have been something like :- Good news everyone! VSCode Node + Babel Recipe | Solves: vscode debug unexpected token import - VSCode_Node_Babel_Recipe . Node 12 came out before the spec was final - and so did Node 13, for that matter. よくよく考えれば、ts-loaderもbabelも Optional Chaining はサポートしているのであって . Ternary Operator. on Unexpected token error at code with optional chaining when using Typescript, Unexpected token error at code with optional chaining when using Typescript, inoyakaigor/webpack-typescript-optional-chaining, ← DOCS: output.ecmaVersion in Webpack 4 documentation, HotModuleReplacementPlugin throws TypeError: Cannot read property ‘filter’ of undefined →, https://github.com/acornjs/acorn/blob/master/acorn/CHANGELOG.md, https://github.com/OnurGvnc/acorn-with-stage3, https://www.npmjs.com/package/npm-force-resolutions. In object-oriented programming, the safe navigation operator (also known as optional chaining operator, safe call operator, null-conditional operator) is a binary operator that returns null if its first argument is null; otherwise it performs a dereferencing operation as specified by the second argument (typically an object member access, array index, or lambda invocation). I could fix the problem with npm by installing https://www.npmjs.com/package/npm-force-resolutions, and then adding the following to my package.json: Necessary cookies are absolutely essential for the website to function properly. If you have nvm, make sure you're using a node version that implements the operator that is giving an error. Add @babel/plugin-proposal-optional-chaining and @babel/plugin-proposal-nullish-coalescing-operator plugins in your config. # How does ESLint detect components? JavaScript TypeScript Vue.js webpack storybook. To get started using the RC, you can get it through NuGet, or use npm with the following command: npm install typescript@rc. I pounded my head against this issue for hours before I finally happened upon the (embarassingly) simple solution. Optional Chaining Semicolon. Steven Pinker dirige le centre de neurosciences cognitives du Massachusetts Institute for Technology. ". Never start the . Unexpected token error at code with optional chaining when using Typescript, fregante/content-scripts-register-polyfill#32. UPD3 fix for optional chaining landed into acorn 7.3.0 but webpack@4 uses acorn 6.x. On a long smooth descent, do brakes really heat less with intermittent hard braking compared to dragging? Currently, few platforms are supporting it. The application requested an ID token from the authorization endpoint, but did not have ID token implicit grant enabled. But there's a problem, it doesn't work. It's unlikely you want to use this plugin directly as it only enables Babel to parse this syntax. A couple months ago, when Vue CLI 3 was still in beta, I experimented on a new project with optional chaining, using @babel /plugin-proposal-optional-chaining. Acorn 7.3.0 with optional chaining support just released 2 hours ago! Find centralized, trusted content and collaborate around the technologies you use most. ; obj?. Cloudflare pages nodejs v12.18. babel-loader exposes a loader-builder utility that allows users to add custom handling of Babel's configuration for each file that it processes. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Thanks for the information. null conditional operator, Update dependency browserslist to ^4.14.0, add optional chaining and nullish coalescing support, [BUG]Babel safe navigation operator invalid token, Move RIPE instance-related logic to mixin, JS Optional chaining throws a webpack compilation error, Optional chaining doesn't work out of the box, Typescript 4 re-exporting syntax throws an error, nextjs server build did not succeed since 10.0.6, Using ES version of library (node_module) is not working, ES6 optional chaining syntax in svelte component throws an error, ES2019 target required for nullish coalescing in Cypress tests, Getting error: You may need an additional loader, You may need an appropriate loader to handle this file type, currently no loaders are configured to process this file, Update to use Webpack 5 for bundling built-in extensions, modern build fails with nullish coalescing or optional chaining after upgrading caniuse-lite to latest, build error if package contains ES2020 features (in this case, optional chaining), Add @babel/plugin-proposal-nullish-coalescing-operator to transpile code of react-leaflet package, Nullish coalescing operator makes package incompatible with webpack 4, Currently we are not able to use Safe Navigation. The optional chaining ?. Why are all road bike frames now squashed parallelograms? You signed in with another tab or window. Ask questions Module parse failed on optional chaining BEFORE YOU SUBMIT please read the following: If you have a support request or question please submit them to StackOverflow using the tag [babel] or the Babel Slack . Thank you for your support. the following javascript syntax "?." works in webide when I launch the app. TLDR: Used a conditional chaining operator in my code that requires Node 14 but the code was running on Node 12 causing the issue. There's a tag for it, but it's not related to Javascript and will cause more confusion than do good. New York, 1945. ). Optional Chaining will be implemented with Node.js v14, which will be released on 20/04/2020. By clicking “Accept”, you consent to the use of ALL the cookies. // babel.config.json { "assumptions": { "noDocumentAll": true } } This release adds a new `--embedded-language-formatting` option, supports new JavaScript/TypeScript features, and includes many bug fixes and improvements! If you want to play with optional chaining today, your best bet is to use TypeScript (which added optional chaining in version 3.7) or a preprocessor like Babel. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Notable fixes. . Get RSS Feed. Optional Chaining The spec for the optional chaining feature was just promoted to Stage 4 (Finished) on December 22, 2019. Recueil de treize nouvelles. Edition originale, 1975. Petit épilogue de l'auteur qui qualifie de contes les courts textes rassemblés. Borges est le plus célèbre des écrivains argentins. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. I still get the same unexpected token at each use of optional chaining I have in my code. but the build and deployment fails with. is a proposal and permits reading the value of a property that is located deep in a chain of connected objects without having to expressly validate that each reference is valid. EDIT: After investigation, I came to understand you are using Yarn, but I am not. UPD2 we all awaiting while estree/estree/pull/204 will be merged, UPD3 fix for optional chaining landed into acorn 7.3.0 but webpack@4 uses acorn 6.x. These cookies ensure basic functionalities and security features of the website, anonymously. Acorn 7.3.0 with optional chaining support just released 2 hours ago! . How can I remove a specific item from an array? This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. Still, whether it needs a flag or not, I wouldn't expect to see the feature until the Node 14 release around April 2020. In last week's article I talked about optional chaining which is incredibly useful when trying to access methods and properties on potentially null objects. Is it correct to say "The hem almost came off. on March 10, 2021 March 10, 2021 by ittone Leave a Comment on node.js - ts-node "SyntaxError: Unexpected token ." because optional chaining operator I got this code that I'm trying to run with ts-node Le vieux général Sternwood, à demi paralysé, est affligé de deux filles. Hi there. Please either update the issue with the template and reopen, or open a new issue. The "extends": "eslint:recommended" property in a configuration file enables this rule.. Wrapping up JavaScript moves at a fast pace and so TypeScript , which pushes new feature and innovations forwards into the language. When I set in tsconfig.json target: "ESNext" TS keeps my code with optional chaining (and nullish coalescing) as is. In other words optional chaining always returns undefined when the value we're trying to access is non-existent, and property access on objects won't throw. https://github.com/acornjs/acorn/blob/master/acorn/CHANGELOG.md. Please either update the issue with the template and reopen, or open a new issue. This is a HUGE feature that I have yet to see any other REST client offer. Node SQLite3 : This is a node.js driver for SQLite3. I'm afraid I can't do much about it. Building generational wealth. In previous versions of TypeScript, this was allowed because while A was totally incompatible with C, B was compatible with C.. After setting the node version to greater than 14, I am still getting Unexpected token errors when using ?.. the Monaco Editor core from the VS Code repository main branch and perform sanity testing to catch potential bugs or unexpected breaking changes as early as possible. Cant wait to go on this journey Since this is a unresolved problem, it will help people find answers and let people track the progress. Treating the Schrödinger equation as an ordinary differential equation. @evilebottnawi Can we reopen this issue? Stick mosaic stickers onto her belly. Sew the hem back to the skirt"? Right-click the AD FS service, point to All Tasks, and then click Manage private keys. Works fantastic! I managed to set up everything and make it work. macOS artificially restricts speeds to 100 Mbps over Ethernet. At its core, optional chaining lets us write code where TypeScript can immediately stop running some expressions if we run into a null or undefined.The star of the show in optional chaining is the new ?. How do I pass command line arguments to a Node.js program? Have a question about this project? Basic Setup. I still get the same unexpected token at each use of optional chaining I have in my code. I'm in this for the long run. Trouvé à l'intérieurVéritable bombe littéraire qui suscita les passions lors de sa parution en Angleterre, La Piscine-bibliothèque est le premier roman d'Alan Hollinghurst. Why NPN and PNP in parallel in this distortion pedal circuit? () - calls obj.method() if obj.method exists, otherwise returns undefined. it's not plain JavaScript. You can enable optional using --harmony flag. In this guide we will learn how to integrate TypeScript with webpack. The token types and modifiers are then used to add styles in the editor. 1. I don’t know is it a bug or feature, Description Depuis ses premiers balbutiements, dans les années cinquante, l'industrie du logiciel est devenue un des secteurs industriels les plus importants de l'économie mondiale. I had to use, If you're using esm, optional chaining won't work on Node 14+ until this ticket was fixed, How to use optional chaining in Node.js 12, developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/…, github.com/standard-things/esm/issues/866. After setting the node version to greater than 14, I am still getting Unexpected token errors when using ?.. Trouvé à l'intérieur – Page 470... of varying levels of usefulness: ➤➤ “Unexpected token **” ➤➤ “Unparenthesized unary expression can't appear on ... 13 https://github.com/tc39/proposal-nullish-coalescing 14 https://github.com/tc39/proposal-optional-chaining 15 ... Nullish Coalescing and Optional Chaining in JavaScript. Unfortunately webpack 4 uses acorn 6.x - not sure if we'll get this before webpack 5. so fix of this issue will be in webpack@5: #10227 (comment), Add @babel/plugin-proposal-optional-chaining and @babel/plugin-proposal-nullish-coalescing-operator plugins in your config, Do not upgrade to version 3.8 or set compiler option target to es2019, Do you want to request a feature or report a bug? Optional chaining (obj?.param1?.param2) seems to be a great feature and I really wanted to see it implemented and finally get rid of nested ifs, arbitrary functions and what not for such a simple operation. By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Optional Chaining. Rules in ESLint are grouped by type to help you understand their purpose. obj?.prop - returns obj.prop if obj exists, otherwise undefined. Optional chaining isn't working using with, bug/documentation: Webpack/Angular compatibility, minified dist/server/index.js throws error with, Problem with null coalescing operator in 2.6.5 release. You also have the option to opt-out of these cookies. EDIT: After investigation, I came to understand you are using Yarn, but I am not. if some problems reported by the rule are manually fixable by editor suggestions Optional chaining support for JavaScript and TypeScript. L'auteur, Douglas Crockford, considéré comme l'expert JavaScript actuel, dresse la liste des bons éléments du JavaScript, comme les fonctions, le typage lâche, les objets dynamiques et une notation littérale très expressive des ... Our traveller cried in so its very hard of what board did add a flag waver for a lizard pet right for storage anywhere or press your back knee on knee . The first parameter is the name of the request header, and the second parameter is the value you want to send to the server for that header. For Typescript These cookies will be stored in your browser only with your consent. I will also try to guide you on how to configure it and . Rď̌ition, en traduction nouvelle plus complẗe, de six rčits (1965) de situations aussi ťonnantes qu'impossibles que ršolvent deux ingňieurs cybernťiciens que rien ne surprend. Amusant et rempli d'inventions cocasses. 前回の反省点として、Optional Chainingに問題をすり替えてしまって、結果、混沌としてしまったです。. This cookie is set by GDPR Cookie Consent plugin. TypeScript 3.7 から導入される新機能で、?.という新しい構文です。より簡潔なコードが書けます。 So lets say you want to assign the user's name to a property. • Currency Symbol (optional): The currency symbol of the network you want to add. Optional Chaining is a new JavaScript API that will make developers' lives easier :D. Optional Chaining is currently at Stage 3, and soon enough will be part of the language itself, but we can use it, today. So the resolutions section wouldn’t be considered by npm alone. Baseboard diffuser is twice length of the vent, Search and Replace on odd/even numbered lines using g. What does a computational scientist can do in fourth industrial revolution? Le Valbise tremble. This little shortcut makes the following a lot easier to understand and doesn't require any build system to play nicely with Node: const letters = ['a', 'b', 'c']; const [a, b, c] = letters; console.log(a, b, c); If you only care about the third element, then the following also works, even though it looks a little jarring. What? . I updated to Node 12 and I still get an error: When true, this transform will pretend document.all does not exist, and perform loose equality checks with null instead of strict equality checks against both null and undefined. La première apparition du monstre le plus terrifiant et le plus fascinant : Hannibal Lecter. Filtering out the most rated answers from issues on Github |||||||||||_______|||| Also a sharing corner, UPD for everyone who will find this issue. Hide chat buttons? Node.js PDFjs `SyntaxError: Unexpected token '. Silver Member: posted . So the resolutions section wouldn't be considered by npm alone. @evilebottnawi looks like @inoyakaigor updated the description and also provided a reproduction repo. Costs and benefits of using non-well-founded set theories instead of ZFC, or ZFC instead of non-well-founded set theories? Saves so much time. See vue-eslint-parser README (opens new window) for more details. Update! TypeScript 3.9 Release Notes. Thanks for contributing an answer to Stack Overflow! This sometimes may cause unexpected behavior of code. Good news everyone! 1. But there's a problem, it doesn't work. [prop] - returns obj[prop] if obj exists, otherwise undefined. During an engine failure in Diamond DA-40, should the prop lever be at fine pitch or coarse pitch? Terrestrial POWs sent to prison camp, change other extra-terrestrial prisoner's behaviors and feelings about being POWs. Trouvé à l'intérieurDe Manière allégorique, John Bunyan présente dans cet ouvrage le voyage du chrétien ordinaire vers l'éternité bienheureuse, les progrès et l'heureuse fin d'une modeste âme chrétienne qui cherche simplement Dieu en Jésus-Christ. How to check whether a string contains a substring in JavaScript? Fantashit December 3, 2020 1 Comment on Parcel 2: Unexpected token: punc (.) The text was updated successfully, but these errors were encountered: It looks like you just deleted our lovely crafted issue template. obj.method?. .then( json => json?.auth?.client_token ) While ReScript compiles the code fine, ReTest gives me a runtime error: (the arrow is pointing to the ? Syntax only. For example, consider an object obj which has a nested structure. Fingers crossed! The spec for the optional chaining feature was just promoted to Stage 4 (Finished) on December 22, 2019. It's a new project, using "laravel-mix": "^5.0.1", (also tried mix 4) . Réédition. Volume publié en 1964 dans la même collection. All component-related rules are applied to code that passes any of the following checks: Vue.component() expression Vue.extend() expression Vue.mixin() expression app.component() expression @evilebottnawi Closing the issue because I removed the template looks like excessive bureaucracy. [SOLVED] Chrome Uncaught Syntax Error: Unexpected Token ILLEGAL (JQuery / Javascript) Login/Join : A Fisher. First install the TypeScript compiler and loader by running: .custom accepts a callback that will be called with the loader's instance of babel so that tooling can ensure that it using exactly the same @babel/core instance as the loader itself. Typescript from v 3.7 came with the following operator with a feature named as Optional Chaining. This might be a simple typo. The cookie is used to store the user consent for the cookies in the category "Performance". Optional chaining is now supported in node version v14.2.0. does not support Optional chaining operator SyntaxError: Unexpected token '.' - General - Cloudflare Community system closed June 30, 2021, 3:46am You can customize Storybook's webpack setup by providing a webpackFinal field in .storybook/main.js file. Why is optional chaining not working in my Node REPL? Optional chaining was added in ES2020, which isn't supported by node yet. Trouvé à l'intérieurCe livre, réédité fin 2018, est l'ouvrage de référence du refactoring. Il commence par un chapitre exemple pour bien faire comprendre ce qu'est (et n'est pas) le refactoring. Cookie Duration Description; cookielawinfo-checbox-analytics: 11 months: This cookie is set by GDPR Cookie Consent plugin. For context, there have been over 23,000 issues on the TypeScript issue tracker since then. It was there for good reasons. Answers Include Comments. More info here. For others that stumble on this issue, it looks like we're waiting on acornjs/acorn#891 and acornjs/acorn#890 before we stop transpiling this syntax via babel/tsc. Ce très beau roman indien a obtenu le Booker Prize en 1981 (équivalent du Pulitzer ou du Goncourt). The term ternary means composed of three items or parts. The value should be an async function that receives a webpack . To build fault-tolerant applications despite issues like this, default values are provided to make apps fail gracefully. "Conçu à l'origine comme le langage des systèmes d'exploitation UNIX, le langage C s'est répandu bien au-delà de cette fonction et continue largement à se développer. like . Surface Laptop 4; Surface Laptop Go; Surface Go 2; Surface Pro X (ASI): At the time of parsing the code, JavaScript Engine automatically inserts a semicolon at the end of each token. privacy statement. Analytical cookies are used to understand how visitors interact with the website. ⚠️ Consider migrating to the top level noDocumentAll assumption. Before we dive deep, here is an activity for you. Node-sqlite3 is probably one of the best modules used for working with SQLite3 database which is actively maintained and well documented. '`, nodejs does not recognize optional chaining operator, How to ignore "Cannot read property 'username' of undefined" on a web page, Unexpected token '.' That's great. Since typescript is a super set of JavaScript and supports upcoming features of ECMAScript. Connect and share knowledge within a single location that is structured and easy to search. The cookie is used to store the user consent for the cookies in the category "Analytics". Can't set up @babel/plugin-proposal-optional-chaining. What does "use strict" do in JavaScript, and what is the reasoning behind it? Changed the conditional chaining operator out and function works as expected. This rule was introduced in eslint-plugin-vue v3.0.0 # Implementation. • Block Explorer URL (optional): MetaMask has links to blockchain explorers per network to check account history, new transactions sent, and balances on them . Since this is a unresolved problem, it will help people find answers and let people track the progress. disallow use of optional chaining in contexts where the undefined value is not allowed (no-unsafe-optional-chaining). Before now, the logical OR (||) operator is used to achieve this. WHATWG HTML spec (opens new window) # Version. See also step 10. of "create an element for a token" (opens new window). Without optional chaining, looking up a deeply-nested subproperty requires validating the references in between, such as: When I set in tsconfig.json target: "ESNext" TS keeps my code with optional chaining (and nullish coalescing) as is. It is written in JavaScript, does not require compiling. Cannot use optional chaining in Node 14 - syntax error? In the Console Root window, click Certificates (Local Computer) to view the computer certificate stores. Optional chaining is currently not supported in Node.js version 13 and below. Successfully merging a pull request may close this issue. Installation npm install --save-dev @babel/plugin-syntax-optional-chaining operator being used - as a ternary operator. The parserOptions.parser option can also specify an object to specify multiple parsers. Go to Azure Portal > Azure Active Directory > App registrations > Select your application > Authentication > Under 'Implicit grant and hybrid flows', make sure 'ID tokens' is selected. Sign up to start every week with quick to read Web Development learnings, productivity tricks, useful GitHub projects, #devsheets and music that keeps you going. According to a recent spec proposal, "an optional chain is a chain of one or more property accesses and function calls, the first of which begins with the token ?. boolean, defaults to false. The optional chaining operator provides a way to simplify accessing values through connected objects when it's possible that a reference or function may be undefined or null. I'm kinda new to Mix. You can find the list of platforms supporting optional chaining in the given link. Fingers crossed! The optional chaining (?.) Le 15 novembre 1959, à Holcomb, petite ville du Kansas, deux repris de justice assassinent froidement toute une famille d'agriculteurs sans mobile apparent. What's new. The ?. operator for . SAPUI5 Optional Chaining Javascript (Build Error) 78 Views. Me (Ahmad Awais) and my incredible wife (Maedah Batool) are two engineers who fell in love with open source and then with each other.You can read more about me here.If you or your company use any of my projects or like what I'm doing then consider backing me. I’m closing this. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Webpack is a complex tool, but our default configuration is intended to cover most use cases. Jan 2021: This is still an issue in codesandbox website which takes the official docker image for nodejs. How can I draw the surface f(x,y)=x^2+y^2 like my picture? https://github.com/OnurGvnc/acorn-with-stage3. It will be supported from Node.js version 14 and most of the browsers as it is moved to Stage 4.