@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/build-angular@0.901.7
| -- license-webpack-plugin@2.1.4 | -- @types/webpack-sources@0.1.7
| -- @types/node@14.0.4 deduped +-- @types/node@14.0.4 -- webpack-dev-server@3.11.0
-- del@4.1.1 -- @types/glob@7.1.1
`-- @types/node@14.0.4 deduped

[SimonSchick]

Oh ok, I see.
Culprit seems to be #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/node@13.7

[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]

angular/angular#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

[samiullahfx]

@SimonSchick,
When i run this npm ls @types/node, i got the below output.

+-- @angular-devkit/build-angular@0.901.12
| +-- license-webpack-plugin@2.1.4
| | -- @types/webpack-sources@0.1.8 | | -- @types/node@12.19.8 deduped
| +-- terser-webpack-plugin@3.0.3
| | -- jest-worker@26.6.2 | | -- @types/node@12.19.8 deduped
| -- UNMET PEER DEPENDENCY webpack-dev-server@3.11.0 | -- del@4.1.1
| -- @types/glob@7.1.3 | -- @types/node@12.19.8 deduped
+-- @types/node@12.19.8
-- exceljs@4.2.0 -- fast-csv@4.3.5
+-- @fast-csv/format@4.3.5
| -- @types/node@14.14.10 -- @fast-csv/parse@4.3.3
`-- @types/node@14.14.10

npm ERR! peer dep missing: webpack-dev-server@^3.1.4, required by @angular-devkit/build-webpack@0.901.12

[Greenek]

I replaced

const window = domino.createWindow(template);
global['window'] = window;
global['document'] = window.document;

with

const window = domino.createWindow(template);
(global as any).window = window;
(global as any).document = window.document;

and it's working fine with the latest @types/node.

[DollarAkshay]

@Greenek Using any defeats the point of the having types in the first place