Function beforeAnimation

core/src/utils/animation/animation.ts:524–549

()

   * Run all "before" animation hooks.
   */
  const beforeAnimation = () => {
    // Runs all before read callbacks
    _beforeAddReadFunctions.forEach((callback) => callback());

    // Runs all before write callbacks
    _beforeAddWriteFunctions.forEach((callback) => callback());

    // Updates styles and classes before animation runs
    const addClasses = beforeAddClasses;
    const removeClasses = beforeRemoveClasses;
    const styles = beforeStylesValue;

    elements.forEach((el) => {
      const elementClassList = el.classList;

      addClasses.forEach((c) => elementClassList.add(c));
      removeClasses.forEach((c) => elementClassList.remove(c));

      for (const property in styles) {
        // eslint-disable-next-line no-prototype-builtins
        if (styles.hasOwnProperty(property)) {
          setStyleProperty(el, property, styles[property]);
        }
      }
    });
  };

  /**
   * Run all "after" animation hooks.