export function mount_component(component, target, anchor, customElement) {
        const { fragment, on_mount, on_destroy, after_update } = component.$$;
        fragment && fragment.m(target, anchor);
        if (!customElement) {
        // onMount happens before the initial afterUpdate
        add_render_callback(() => {
          const new_on_destroy = on_mount.map(run).filter(is_function);
          if (on_destroy) {
          } else {
          // Edge case - component was destroyed immediately,
          // most likely as a result of a binding initialising
          component.$$.on_mount = [];

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      The code defines a function mount_component which takes three arguments: a component, a target, and an anchor. In addition, the mount_component function receives a customElement parameter.

      The fragment portion of the code first attaches the target and anchor to the customElement. Next, the on_mount and on_destroy functions are called. The on_mount function is triggered when the component is first loaded and the on_destroy function is called when the component is destroyed. The after_update function is called once per update event, and it contains a set of callbacks that are added to the customElement.

      Shortcut: mount.Component


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