src/vs/base/common/diff/diff.ts/DiffChangeHelper/constructor
class DiffChangeHelper:	constructor() {
		this.m_changes = [];
		this.m_originalStart = Constants.MAX_SAFE_SMALL_INTEGER;
		this.m_modifiedStart = Constants.MAX_SAFE_SMALL_INTEGER;
		this.m_originalCount = 0;
		this.m_modifiedCount = 0;
	}