babel-polyfill沒(méi)有轉(zhuǎn)碼？

.babelrc

{
    "presets": [
        "es2015",
        "stage-0"
    ]
}

index.js

import "babel-polyfill";
function addAll() {
    return Array.from(arguments).reduce(function (a, b) {
        return a + b;
    });
}

運(yùn)行編譯

babel index.js -o dist.js

編譯出來(lái)的dist.js

"use strict";

require("babel-polyfill");

function addAll() {
    return Array.from(arguments).reduce(function (a, b) {
        return a + b;
    });
}

并沒(méi)有把Array.from轉(zhuǎn)成es5語(yǔ)法??？

Node運(yùn)行版本是8.9.3