Using Babel in my NodeJSv4.1.1 code.
Got the require hook in:
require("babel-core/register"); $appRoot = __dirname; module.exports = require("./lib/controllers/app");
In a subsequently lodaded .js
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)
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:
require('babel-register')({ "presets": ["es2015"] });
You will also need to install the preset package:
npm install --save-dev babel-preset-es2015
It seems that this file is not being transpiled. Is this subsequently loaded .js
file in the node_modules directory? If so, you need to:
require("babel-core/register")({ // This will override `node_modules` ignoring - you can alternatively pass // an array of strings to be explicitly matched or a regex / glob ignore: false });
By default all requires to node_modules will be ignored. You can override this by passing an ignore regex
https://babeljs.io/docs/usage/require/
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