Rob Rob - 1 year ago 689
Node.js Question

Unexpected reserved word 'import' when using babel

Using Babel in my NodeJSv4.1.1 code.

Got the require hook in:


$appRoot = __dirname;

module.exports = require("./lib/controllers/app");

In a subsequently lodaded
file I am doing:

import { Strategy as LocalStrategy } from "passport-local";

However this is generating the following error in the CLI:

import { Strategy as LocalStrategy } from "passport-local";

SyntaxError: Unexpected reserved word
at exports.runInThisContext (vm.js:53:16)
at Module._compile (module.js:413:25)
at loader (/Users/*/Documents/Web/*/node_modules/babel-core/node_modules/babel-register/lib/node.js:128:5)
at Object.require.extensions.(anonymous function) [as .js] (/Users/*/Documents/Web/*/node_modules/babel-core/node_modules/babel-register/lib/node.js:138:7)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Module.require (module.js:365:17)
at require (module.js:384:17)
at module.exports (index.js:9:5)
at Object.<anonymous> (app.js:102:39)

Answer Source

Sounds like you aren't using the right presets. As of babel 6, the core babel loader no longer includes the expected ES6 transforms by default (it's now a generic code transformer platform), instead you must use a preset:

        "presets": ["es2015"]

You will also need to install the preset package:

npm install --save-dev babel-preset-es2015
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