resolveContainer() {
        if ( undefined === this.options.container ) {
            this.container = document.querySelector( this.options.containerSelector );
        } else {
            this.container = this.options.container;
        }
        assertError(
            `Widget ${this.ID} doesn't resolve container. Check container selector`,
            undefined === this.container
        );
    }
/**
     * Query current container by this.containerSelector and save node as this.container
     */
Query current container by this.containerSelector and save node as this.container
Query current container by this . containerSelector and save node as this . container
resolveContainer() {
        if ( undefined === this.options.container ) {
            this.container = document.querySelector( this.options.containerSelector );
        } else {
            this.container = this.options.container;
        }
        assertError(
            `Widget ${this.ID} doesn't resolve container. Check container selector`,
            undefined === this.container
        );
    }
resolveContainer ( ) { if ( undefined === this . options . container ) { this . container = document . querySelector ( this . options . containerSelector ) ; } else { this . container = this . options . container ; } assertError ( ` ${ this . ID } ` , undefined === this . container ) ; }
Query current container by this.containerSelector and save node as this.container
Query current container by this . containerSelector and save node as this . container