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