22 lines
455 B
TypeScript
22 lines
455 B
TypeScript
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import { Directive } from 'vue';
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const map = new WeakMap<HTMLElement, ResizeObserver>();
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export default {
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mounted(el: HTMLElement, binding, vn) {
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const ro = new ResizeObserver((entries, observer) => {
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el.style.setProperty('--containerHeight', el.offsetHeight + 'px');
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});
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ro.observe(el);
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map.set(el, ro);
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},
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unmounted(el, binding, vn) {
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const ro = map.get(el);
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if (ro) {
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ro.disconnect();
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map.delete(el);
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}
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},
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} as Directive;
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