How to use the webpack-theme-color-replacer/client.elementUI function in webpack-theme-color-replacer

export default function changeThemeColor(newColor, oldColor) {
    var options = {
        primary: {
            oldColor: oldColor || appConfig.themeColor,
            newColor: newColor,
        },
        cssUrl: appConfig.themeFile,
        others: {
            oldColors: ['#0cdd3a', '#c655dd'],
            newColors: ['#ff0000', '#ffff00'],
        }
    }
    try {
        replacer.elementUI.changeColor(options);
        localStorage.setItem('theme_color', newColor)
    } catch (e) {
        console.error(e)
    }
}