es-checker still show "× Module export command" in Node 12 about es-checker

[everlose]

I debugged it

// es-checker.js
function runIt(code) {return (new Function(code))(); }

runIt("'use strict'; export var a = 1;")

and run it.

> node .\es-checker.js
C:\code\vue-test\es-checker.js:5
export function asdf () {
^^^^^^

SyntaxError: Unexpected token export

It seems to be my own problem，but I remember it in Mac OS，Node 12 can use import/export.

[ruanyf]

Node.js supports export and import in esm mode.