Definitelytyped: @types/node": "14.0.5" - Variable 'global' must be of type 'Global', but here has type 'Global & typeof globalThis'.

[molyviatis]

I upgraded from Angular 9.17 to 9.19 and now ng build fails with the following error complaining about a 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.

When I downgrade @types/node to 14.0.4, everything works. I am using version 0.10.3 of zone.js.

[SimonSchick]

Uh oh, please run npm ls @types/node and post the result.

[molyviatis]

+-- @angular-devkit/[email protected]
| -- [email protected] |-- @types/[email protected]
| -- @types/[email protected] deduped +-- @types/[email protected] -- [email protected]
-- [email protected] -- @types/[email protected]
`-- @types/[email protected] deduped

[SimonSchick]

Oh ok, I see.
Culprit seems to be https://github.com/DefinitelyTyped/DefinitelyTyped/pull/44700 @JasonHK

[SimonSchick]

The main issue is that NodeJS.Global & typeof globalThis is a type, not an interface.

[JasonHK]

I've found the line that caused the problem:

https://github.com/angular/angular/blob/d1ea1f4c7f3358b730b0d94e65b00bc28cae279c/packages/zone.js/lib/zone.ts#L678-L682

Although I'm not 100% sure, it seems that this line could be omitted.

[NZhuravlev]

Those files aren't even supposed to be compiled according to typesVersions for @types/node or am I missing something?

[erlendga]

It works if you downgrade to @types/[email protected]

[simonua]

Hi @erlendga, if you are using NodeJS 14 have you tried 14.0.4? I downgraded from 14.0.13 and found 14.0.4 to work, as also initially suggested by the OP.

[JasonHK]

Hi @erlendga, if you are using NodeJS 14 have you tried 14.0.4? I downgraded from 14.0.13 and found 14.0.4 to work, as also initially suggested by the OP.

@simonua I should probably open an issue in angular/angular, since the problem was caused by me.

[simonua]

@JasonHK, I appreciate the ownership. Thank you.

[tiagolpadua]

In your tsconfig.app.json you need to add "types": ["node"] too.

[kmaraz]

Hi @JasonHK , can you please provide a link to the issue in Angular so I can subscribe to it? Thank you!

[rezonant]

https://github.com/angular/angular/issues/37531

[TechieViking]

I replaced the variable name global with 'some variable name' and replaced all its occurrence in this file /zone.js.d.ts.
declare var global: NodeJS.Global;
This is working as of now for :D

[tafty]

I have come across this issue in a React Native project. We're using node 12 and have found the error is removed by downgrading to @types/node version 12.12.41. Version 12.12.42 is the first version with this problem for node 12.

[blasco]

@tafty thanks for sharing, same situation here. The downgrade worked