Method constructor

src/node/utils/padDiff.ts:23–37

(pad: PadType, fromRev:string, toRev:string)

    private _html: any;
    public _authors: any[];
  constructor(pad: PadType, fromRev:string, toRev:string) {
    // check parameters
    if (!pad || !pad.id || !pad.atext || !pad.pool) {
      throw new Error('Invalid pad');
    }

    const range = pad.getValidRevisionRange(fromRev, toRev);
    if (!range) throw new Error(`Invalid revision range. startRev: ${fromRev} endRev: ${toRev}`);

    this._pad = pad;
    this._fromRev = range.startRev;
    this._toRev = range.endRev;
    this._html = null;
    this._authors = [];
  }
  _isClearAuthorship(changeset: any){
    // unpack
    const unpacked = unpack(changeset);