Node js抛出关于严格模式的错误，尽管将babel 6预设es2015与包含严格模式一起使用

Question

node js throw this error uncaughtException: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode although I'm using babel 6 es2015 present that suppose to add use strict .

I have .babelrc file exist and this is how I instantiate babel:

require("babel-core").transform("code", {
    retainLines: true
}); 

Furthermore, when I use babel CLI to see the output files they have use strict

Am I missing something?

** EDIT: Is it possible node js doesn't use the output of babel?

Answer 1

I found the answer.

I changed

require("babel-core").transform("code", {
    retainLines: true
});

to

require("babel-core/register");

and configured all the options in the .babelrc file

What weird is that this (what I initially did) appear in babel documentation ( https://babeljs.io/docs/setup/#installation )