src/vs/base/common/diff/diff.ts/LcsDiff/OriginalElementsAreEqual
class LcsDiff:	private OriginalElementsAreEqual(index1: number, index2: number): boolean {
		if (this._originalElementsOrHash[index1] !== this._originalElementsOrHash[index2]) {
			return false;
		}
		return (this._hasStrings ? this._originalStringElements[index1] === this._originalStringElements[index2] : true);
	}