xx-applets/vue.config.js

module.exports = {
    css: {
        loaderOptions: {
            less: {
                globalVars: {
                    tabBarHeight: '100rpx',
                    tabBarIconWidth: '40rpx',
                    tabBarIconHeight: '40rpx',
                    tabBarFontSize: '22rpx'
                }
            }
        }
    }
}