addClass()

in src/CSSTransition.js [186:205]

• 14 lines of code
• 7 McCabe index (conditional complexity)

  addClass(node, type, phase) {
    let className = this.getClassNames(type)[`${phase}ClassName`];
    const { doneClassName } = this.getClassNames('enter');

    if (type === 'appear' && phase === 'done' && doneClassName) {
      className += ` ${doneClassName}`;
    }

    // This is to force a repaint,
    // which is necessary in order to transition styles when adding a class name.
    if (phase === 'active') {
      /* eslint-disable no-unused-expressions */
      node && node.scrollTop;
    }

    if (className) {
      this.appliedClasses[type][phase] = className;
      addClass(node, className);
    }
  }