bootstrap-vue/es/mixins/form-size.js

Quickly integrate Bootstrap 4 components with Vue.js

export default {
    props: {
        size: {
            type: String,
            default: null
        }
    },
    computed: {
        sizeFormClass: function sizeFormClass() {
            return [this.size ? "form-control-" + this.size : null];
        },
        sizeBtnClass: function sizeBtnClass() {
            return [this.size ? "btn-" + this.size : null];
        }
    }
};