Enable strict null check for ./vs/base/test/common/history.test.ts

[gangachris]

#65233

• "./vs/base/test/common/history.test.ts"

Not sure how to fix this. yarn strict-null-check

vscode/src/vs/base/test/common/history.test.ts

Lines 116 to 126 in f903e6d

	function toArray(historyNavigator: HistoryNavigator<string>): string[] {
	let result: string[] = [];
	historyNavigator.first();
	if (historyNavigator.current()) {
	do {
	result.push(historyNavigator.current());
	} while (historyNavigator.next());
	}
	return result;
	}
	});

result.push(historyNavigator.current());

result is defined as a type string[]
historyNavigator.current() is defined as type <T> | null, in this case string | null.

I'm thinking of changing the types for HistoryNavigator.<method> back to just return T and not T | null

Thoughts ?

[gangachris]

Decided to change
string[] to Array<string | null>