Function safeRegisterElement

app/javascript/application.js:100–100

(name, element, options = {})

})

const safeRegisterElement = (name, element, options = {}) => !window.customElements.get(name) && window.customElements.define(name, element, options)

safeRegisterElement('toggle-visible', ToggleVisible)
safeRegisterElement('disable-hidden', DisableHidden)