element-plus
https://github.com/element-plus/element-plus/blob/dev/packages/components/button/src/button.vue
arco-vue
https://github.com/arco-design/arco-design-vue/blob/main/packages/web-vue/components/button/button.vue
ant-vue组件
https://github.com/vueComponent/ant-design-vue/blob/main/components/button/button.tsx