primevue-mirror/components/lib/splitbutton/style/SplitButtonStyle.js

import BaseStyle from 'primevue/base/style';

const css = `
@layer primevue {
    .p-splitbutton {
        display: inline-flex;
        position: relative;
    }

    .p-splitbutton .p-splitbutton-defaultbutton,
    .p-splitbutton.p-button-rounded > .p-splitbutton-defaultbutton.p-button,
    .p-splitbutton.p-button-outlined > .p-splitbutton-defaultbutton.p-button,
    .p-splitbutton.p-button-outlined > .p-splitbutton-defaultbutton.p-button-outlined.p-button:hover {
        flex: 1 1 auto;
        border-top-right-radius: 0;
        border-bottom-right-radius: 0;
        border-right: 0 none;
    }

    .p-splitbutton-menubutton,
    .p-splitbutton.p-button-rounded > .p-splitbutton-menubutton.p-button,
    .p-splitbutton.p-button-outlined > .p-splitbutton-menubutton.p-button {
        display: flex;
        align-items: center;
        justify-content: center;
        border-top-left-radius: 0;
        border-bottom-left-radius: 0;
    }

    .p-splitbutton .p-menu {
        min-width: 100%;
    }

    .p-fluid .p-splitbutton {
        display: flex;
    }
}
`;

const classes = {
    root: ({ props }) => [
        'p-splitbutton p-component',
        {
            'p-button-raised': props.raised,
            'p-button-rounded': props.rounded,
            'p-button-text': props.text,
            'p-button-outlined': props.outlined,
            'p-button-sm': props.size === 'small',
            'p-button-lg': props.size === 'large'
        }
    ],
    button: 'p-splitbutton-defaultbutton',
    menuButton: 'p-splitbutton-menubutton'
};

export default BaseStyle.extend({
    name: 'splitbutton',
    css,
    classes
});