Enable dynamic component for LWC

To get started with dynamic component for lwc, we have to enable it for the salesforce org.

Setup -> Search for Session Settings

enable Use Lightning Web Security for Lightning web components and Aura components

This will enable dynamic components in the org.

Add dynamic component in component configuration file

Api version should be greater than 55.0 to use dynamic component in lwc.

<capabilities>
    <capability>lightning__dynamicComponent</capability>
</capabilities>

Add dynamic child component to parent lwc

<template>
    <lwc:component lwc:is={componentConstructor}></lwc:component>
</template>

lwc:component acts as the placeholder for the DOM (Document Object Model) that renders the specified dynamic component. lwc:is directive must be used with lwc:component . lwc:is directive provides an imported constructor at runtime to the lwc:component and lwc:is accepts the expression that resolves to a LightningElement constructor at runtime. If constructor is true then it renders all the child elements other wise they are not rendered.

If constructor value is defined but not a LightningElement constructor then it throws an error.

componentConstructor;
connectedCallback() {
    import("c/dynamicComponent")
        .then(({ default: ctor }) => (this.componentConstructor = ctor))
        .catch((err) => console.log("Error importing dynamic component"));
}

The import call basically returns a promise which resolve to a LightningElement constructor. The element is then rendered instead of lwc:component .

Similar to a regular component, the dynamic component is instantiated and attached to the DOM. If the dynamic component's constructor changes, the existing element is removed from the DOM.