Prevent cross-site scripting (XSS) when using vue toasted for displaying notifications

Whenever I include js code like

"><img src=1 onerror=prompt(document.cookie);>
in an input field and click submit, I use vue-toasted.

The notification appears as shown in this image: https://i.sstatic.net/Gju9h.jpg and a popup shows the cookie information.

When I execute

console.log(response.data.message);
, it displays:
Created Site ""><img src=1 onerror=prompt(document.cookie);>" successfully!

Vue escapes HTML but toasted does not. Here is the relevant code snippet:

handleFormSubmit: function(response) {
        this.showAddSiteModal = false;
        if (response.data.status === 'success')
        {
            console.log(response.data.message);
            this.$toasted.success(response.data.message); //<<< problem here
            this.addSite(response.data.site);
        }
        else
        {
            this.$toasted.error(response.data.message);
        }
    },

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