TS2322: Type 'AnyJson[] | null' is not assignable to type 'void | AnyJson[]'

[jantimon]

the lcs function return type is AnyJson[] | void however it returns null in line 282:

json-delta/index.ts

Lines 274 to 283 in 41275a6

	export function lcs(
	a: AnyJson[],
	b: AnyJson[],
	tolerance = a.length + b.length
	): AnyJson[] | void {
	let result: AnyJson[] = [];
	return arrDiff(a, b, tolerance, aIdx => result.push(a[aIdx]))
	? result.reverse()
	: null;
	}

I can prepare a PR if it helps