Nodejs optional chaining unexpected token green, even node. Reload to refresh your session. babelrc. You signed out in another tab or window. Either update to the latest, or to enable it in v13 and earlier versions of v14: node --harmony-optional-chaining Mar 14, 2023 · The reason why optional chaining did not make sense (i. js: Aug 6, 2020 · Locally you're using a recent version of Node. ) operator as part of the updates/hightlights, which enable JavaScript developers to read the value of a property located deep within a chain of connected objects without having to check that each reference in the chain is valid. Apparently Heroku is using an older version of Node. (Optional chaining is fairly new. js. ) I suspect I should compile the code first using Babel and then deploy to Heroku? Is it even related to Babel? That's one option. 3. As we know that optional chaining treads None as null | undefined, that means that our Maybe could be doing the same. js v13. But there’s a problem, it doesn’t work. Feb 10, 2022 · I'm developing a webapp in typescript where i run the program with node -r esm and using import statements, but I have an issue with optional chaining when choosing "target": "ES202 Jun 16, 2023 · It is due to older version of chrome which do not understand the optional chaining syntax. However, I have this error: Module parse failed: Unexpected token (22:16) You may need an appropriate loader to handle this file type. js version: v12. Even more strange is the fact the project compiles fine on Heroku. 0. 5 next. Solution Sep 6, 2022 · Node. If you're using an older version of Node then you probably should update. webpack version: 4. ? was added in Node 14, so I'm wondering if you are using an older version of Node? Node. '` when using the optional chaining operator in Node. js version 14 has included Optional Chaining (?. 6. 7 (Optional Chaining, Nullish Coalescing) 24 TypeScript 3. May 3, 2022 · You signed in with another tab or window. Aug 26, 2024 · Hi! I don't get why I get Parsing error: Unexpected token . Aug 27, 2021 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. js that doesn't. js files and it worked fine until last few days and I cannot figure out what might have caused it to break. 1. After upgrading to the latest browser version, issue is resolved now. This is all my babel dependencies: Sep 11, 2016 · As of Node. ' node version: v12. 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. e. param1?. I use version 15. 0 so they would not work in your v12. js Aug 7, 2021 · Discord. operator AFAIK. js - SyntaxError: Unexpected token import Jan 3, 2024 · Adding an answer for this because it keeps coming up. Problem: Mongoose uses the MongoDB native Node. 0 ts-loader version: 7. Nov 5, 2021 · The problem with using “Optional Chaining” is noted in a few different public issues. The answer suggested in stackoverflow seems the most appropriate, as Firebase implementation seems to be not interpreting the expression as condensed and expanding it appropriately. includes( Jan 3, 2023 · You signed in with another tab or window. _extensions. 4 (19E287) Additional tools: Sep 4, 2021 · It is also supported by NodeJS 13 if you use the --harmony-nullish flag (you also might want to enable --harmony-optional-chaining too). – Madhan Lal JM Nov 22, 2021 · I am trying to deploy node. json should support ?. MDN seems to claim that both are supported as of node. Jun 14, 2020 · Per node. May 17, 2023 · Several of my unit tests are failing to run with the following error: Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, Apr 5, 2011 · optional chaining support was added in node_V14 https: All the default browser targets in the said preset now supports optional chaining. Jan 5, 2021 · Webpack cant compile ts 3. Unexpected token (15 Jan 22, 2023 · SyntaxError: Unexpected token '. 7. I previously deployed this code without error, but now am facing this error: return this. It isn't anymore in the latest Node. 22. I updated to Node 12 and I still get an error: Summary: Learn how to debug and resolve `SyntaxError: Unexpected token '. Mar 16, 2023 · The optional chaining operator . In the mongodb V6 native driver they implemented optional chaining in the async command() within admin. 0 release from 3 days ago. SyntaxError) is because the current version of node I was using does not have support for Optional Chaining, because it was an old version of node. 2 - Support for the experimental syntax 'optionalChaining' isn't currently enabled Apr 26, 2020 · In a create-react-app project, I am using @babel/plugin-proposal-optional-chaining in my `. Jun 17, 2021 · Project setup: Vuejs 3 Webpack 4 Babel TS We created the project using vue-cli and add the dependency to the library. 4 myself, it does work for me. operator. Apr 27, 2023 · I am confident it is because of the optional chaining used in this node module file. Though, when I test nodejs v14. Module. Sep 7, 2020 · Optional chaining is still behind a flag in Node. The second is - optional chaining works nicely with methods, as methods are just callable object properties. js v14 does not yet support the optional chaining ?. 9. 43 Node. js (v14. js v12 (and this is probably fairly stable now, but still marked "experimental"), you have a couple of options for using ESM (ECMAScript Modules) in Node. We then imported a project (Vue Currency Input v2. js driver as one of it's dependencies. 5 Operating System: OS X Catalina 10. js v13's use of the newer nullish coalescing and optional chaining operators are why the library requires node. x. 8 (or any >12, I'm using nvm). 15. 4. Discover best practices for Nov 7, 2019 · In order to use new syntax of optional chaining, but have a power of Maybe we can do a neat trick. both transform and syntax plugins for optional chaining and nullish coalescing. Provide details and share your research! But avoid …. The issue still remains. You switched accounts on another tab or window. js version: 14. js >=14. Unexpected token (10:30) You may need an appropriate loader to handle this Jun 13, 2020 · Stack Overflow indicates the issue lies with the webpack dependency Acorn, which implemented support for Optional Chaining in their 7. 0, so it got deflagged somewhere between those two. For example, in Github issue and there is also a stackoverflow Answer on this. Asking for help, clarification, or responding to other answers. 0) that uses optional ch Feb 10, 2023 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. js trigger and functions with code that contains optional chaining. Sep 28, 2021 · I try to use optional chaining in my nodeJS project. Oct 8, 2023 · I followed the suggested solutions from all other similar problems in the following manner: -updated node version (even though I had version 18 which supports optional chaining and nullish coalescing) -installed babel's plugins i. If you're facing issues with peer dependencies then run by appending --legacy-peer-deps to the command. – Cannicide Commented Aug 10, 2021 at 3:47 May 6, 2020 · First, you should have a ESLint parser that supports the optional chaining: npm install -D @babel/eslint-parser. js that supports the optional chaining operator. js (for files, there's a third way for evaling strings), here's what the documentation says: Feb 21, 2024 · You can update your compilerOptions to include the specific rules for optional chaining. This will allow you to keep the strict mode on and keep validating the dependencies. 0), though it still was in v14. roles?. Jan 3, 2020 · Optional chaining (obj?. js 14. You are using optional chaining syntax which is not supported on Node 12 . Similarly with the nullish coalescing operator??. . May 2, 2020 · I use optional chaining in one of my . Optional chaining was supported officially supported in ES2020. on this line, though the node version specified in package. 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Nodejs optional chaining unexpected token. Jan 5, 2021 · Webpack cant compile ts 3.