DbStoreUpdater.init method delegate validation to helpers

db.ts

  async init(name: string) {

    var manifest;
    if (this._options.address) {
      this._address = this._options.address;
      manifest = await ipfsGet<IStoreManifest>(this._ipfs, this._address);
      if (!this._isStoreManifestValid(manifest))
        return;
      this._ownerIdentity = manifest.ownerIdentity;
    }
    else {
      this._ownerIdentity = this._options.isPublic ? '*' : this._identity.id;
      manifest = {name, ownerIdentity: this._ownerIdentity};
      this._address = await ipfsPut(this._ipfs, manifest);
    }

    const storeCid = window.localStorage.getItem('/db/' + this._address);
    if (storeCid) {
      const store = await ipfsGet<IStore>(this._ipfs, storeCid);
      if (!this._isStoreValid(store) || !store)
        return;
      this._addCount = store.addCount;
      await this.merge(store.entryBlockLists);
    }
  }