引入 NPM包 remote-redux-devtools，build失败

[craone]

"devDependencies": {
"remote-redux-devtools": "0.5.0"
}

    build js node_modules\jsan\lib\utils.js -> dist\npm\jsan\lib\utils.js
    build js node_modules -> dist\npm

项目构建失败!
EISDIR: illegal operation on a directory, read
Error: EISDIR: illegal operation on a directory, read
at Object.fs.readSync (fs.js:682:19)

var jsan = require('./');

不会自动识别为
var jsan = require('./index');

.labrador 文件里添加
"npmMap": {
"./": "./index"
},
也没用。