無法運行巴貝爾transpiled文件與節點

Question

這裏是我剛剛修改，以測試transpiling過程中使用ES6進口非常基本的快件樣板代碼app.js：在.babelrc

import "babel-polyfill"; 
import * as express from "express" 
var app = express(); 


app.get('/', function (req, res) { 
    res.send('Hello World!'); 
}); 

app.listen(3000, function() { 
    console.log('Examdple app listening on port 3000!'); 
}); 

{ 
    "presets": [ 
    "es2015" 
    ], 
    "plugins": ["transform-runtime", 
     "transform-es2015-classes"] 
    } 

所得transpiled程式-compiled.js：

"use strict"; 

require("babel-polyfill"); 

var _express = require("express"); 

var express = _interopRequireWildcard(_express); 

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } } 

var app = express(); 

app.get('/', function (req, res) { 
    res.send('Hello World!'); 
}); 

app.listen(3000, function() { 
    console.log('Examdple app listening on port 3000!'); 
}); 

//# sourceMappingURL=app-compiled.js.map 

現在試圖運行/ usr/local/bin目錄/節點應用共mpiled.js：

var app = express(); 
     ^
TypeError: express is not a function 

或/ usr/local/bin目錄/節點app.js

/Users/Documents/Apps_And_Sites/Js_Apps/projectname/app.js:1 
(function (exports, require, module, __filename, __dirname) { import "babel-polyfill"; 
                   ^^^^^^ 

SyntaxError: Unexpected reserved word 

此外，當我不使用它相同的 '進口' 的錯誤的填充工具，而不封裝功能。

如果這有助於在的package.json依賴關係：

"devDependencies": { 
    "babel-cli": "^6.9.0", 
    "babel-core": "^6.9.1", 
    "babel-eslint": "^6.0.4", 
    "babel-plugin-syntax-flow": "^6.8.0", 
    "babel-plugin-transform-class-properties": "^6.9.1", 
    "babel-plugin-transform-flow-strip-types": "^6.8.0", 
    "babel-plugin-transform-runtime": "^6.9.0", 
    "babel-polyfill": "^6.9.1", 
    "babel-preset-es2015": "^6.9.0", 
    "eslint-plugin-flowtype": "^2.2.7", 
    "flow-bin": "^0.26.0" 
    }, 
    "dependencies": { 
    "babel-runtime": "^6.9.2", 
    "express": "^4.13.4" 
    } 
} 

在我webstorm IDE，我有通天用這些參數設置：

計劃：node_modules /巴貝爾，CLI /斌/ babel.js

參數：--source-地圖--out文件 $ FileNameWithoutExtension $ -compiled.js $文件路徑$

輸出路徑刷新： $ FileNameWithoutExtension $ -compiled.js：$ FileNameWithoutExtension $ -compiled.js.map

爲什麼不能節點運行巴貝爾transpiled代碼？

Answer 1

你import在語法上是正確的，但不適合您的使用，它應該僅僅是：

import express from 'express';