cfx.rollup-plugin-coffee2 受 rollup-plugin-coffee2 启发 有两处修改: 只支持 coffee 2,不再支持 coffee 1 支持直接 import xxx from "./#{pkgname}" 的写法, 默认查找 "./#{pkgname}.coffee" / "./#{pkgname}/index.coffee", 找不到会替换为 '.js' 常用 Plugins rollup-plugin-alias rollup-plugin-buble rollup-plugin-node-resolve rollup-plugin-commonjs