Method #notify

lib/utils/test/mockResizeObserver.ts:104–148

(elements: HTMLElement[])

  }

  #notify(elements: HTMLElement[]) {
    if (disabled) {
      return;
    }

    const entries = elements.map((element) => {
      const computedStyle = window.getComputedStyle(element);
      const writingMode = computedStyle.writingMode;

      let contentRect: DOMRectReadOnly =
        elementToDOMRect.get(element) ?? defaultDomRect;

      if (getDOMRect) {
        const contentRectOverride = getDOMRect(element);
        if (contentRectOverride) {
          contentRect = contentRectOverride;
        }
      }

      let blockSize = 0;
      let inlineSize = 0;
      if (writingMode.includes("vertical")) {
        blockSize = contentRect.width;
        inlineSize = contentRect.height;
      } else {
        blockSize = contentRect.height;
        inlineSize = contentRect.width;
      }

      return {
        borderBoxSize: [
          {
            blockSize,
            inlineSize
          }
        ],
        contentBoxSize: [],
        contentRect,
        devicePixelContentBoxSize: [],
        target: element
      };
    });

    this.#callback(entries, this);
  }

  #onChange = (target?: HTMLElement) => {
    if (target) {