linter: `oxc` incorrectly emits oxc(eslint(no-var)) for `declare global` block in TypeScript code

[hamirmahal]

What version of Oxlint are you using?

1.25.0

What command did you run?

npx oxlint

What does your .oxlintrc.json config file look like?

{
	"categories": {
		"restriction": "deny"
	}
}

What happened?

oxc incorrectly emits

Unexpected var, use let or const instead.
help: Replace var with let or const

oxc eslint(no-var)

for a declare global block in TypeScript code, like

declare global {
	var __SPECIAL_VALUE__: boolean | undefined;
}

If we update that code to

declare global {
	const __SPECIAL_VALUE__: boolean | undefined;
}

and try accessing

globalThis.__SPECIAL_VALUE__

later, we get

Property '__SPECIAL_VALUE__' does not exist on type 'typeof globalThis'.ts(2339)