Encountering build issues after transitioning from Angular version 9.17 to 9.19

After upgrading from Angular 9.17 to 9.19, my ng build process started failing with an error related to variable declaration in both @types/node and zone.js:

ERROR in node_modules/@types/node/ts3.5/globals.global.d.ts:1:13 - error TS2403: Subsequent variable declarations must have the same type. Variable 'global' must be of type 'Global', but here has type 'Global & typeof globalThis'.

1 declare var global: NodeJS.Global & typeof globalThis; ~~~~~~

node_modules/zone.js/dist/zone.js.d.ts:600:13 600 declare var global: NodeJS.Global; ~~~~~~ 'global' was also declared here.

The build was working fine before the upgrade, and this specific change has caused the issue.

I would appreciate any assistance or advice on resolving this problem.

This is a snippet of my package.json for reference:

{
  "name": "myapp",
  "private": true,
   (rest of the package.json content as per the original text)
}

Answer №1

It appears that a new version of the @types/node package is needed. Temporary solution for now is to downgrade to 14.0.4.

npm install @types/<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="b3dddcd7d6f382879d839d87">[email protected]</a> --saveDev

Answer №2

The issue didn't originate from @types/node, but rather from the zone.js dependency within angular itself. To further explore this problem, check out this Github thread.

It appears that updating your zone.js to the latest version is recommended, preferably version 0.11.1 or higher

npm i zone.js@latest

However, be cautious of the potential breaking changes when it comes to older browsers like IE11.

Feel free to then update your @types/node to the most recent version with:

npm i @types/node@latest

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