node --experimental-modules, requested module does not provide an export named

the requested module does not provide an export named 'default'
node --experimental-modules
node esm
must use import to load es module
mjs javascript
node 12 import
node bad option experimental-modules
the requested module 'pg' does not provide an export named 'pool'

I've installed Node 8.9.1 (same problem happens in v10.5.0).

I'm trying to use named imports from npm packages in a file with the .mjs

import { throttle } from lodash;

I run:

node --experimental-modules index.mjs

and I get:

SyntaxError: The requested module 'lodash' does not provide an export named 'throttle' at ModuleJob._instantiate (internal/modules/esm/module_job.js:80:21)

--experimental-modules are supposed to stop being experimental in v10 LTS, so why haven't more module authors jumped on the bandwagon?


The requested module does not provide an export named , node --experimental-modules test (node:32448) ExperimentalWarning: The ESM module loader is experimental. SyntaxError: The requested  On Oct 11, 2018, at 13:00, Jayden Seric ***@***.***> wrote: The published ESM in lib/index.mjs contains this line: import Stream, { PassThrough } from 'stream' Turns out, PassThrough is not a named export of stream in Node.js v8, but it is in v10: // test.mjs import { PassThrough } from 'stream' node --experimental-modules test In Node.js v8.12.0: $ node --experimental-modules test (node:32448


You have to use .mjs extension.

Once this has been set, files ending with .mjs will be able to be loaded as ES Modules.

reference: https://nodejs.org/api/esm.html

Update:

Looks like you haven't export the method yet.

Suppose i have hello.mjs with content

export function sayHello() {
    console.log('hello')
}

i can use it in index.mjs like this

import {sayHello} from './hello.mjs'
sayHello()

Error importing with --experimental-modules · Issue #913 · ardatan , Error importing with --experimental-modules #913 SyntaxError: The requested module 'graphql-tools' does not provide an export named  I'm using --experimental-modules and find that when a module down the dependency chain doesn't export a symbol, it's hard to tell which module that was: SyntaxError: The requested module does not provide an export named '' It would really help if Node included the name of the module that didn't provide that export.


If lodash had been written as modules, and lodash/index.mjs exported throttle: export const throttle = ...;, then you'd be able to import { throttle } from lodash;

The problem here is that in commonjs there's no such thing as a named export. Which means that in commonjs modules export one thing only.

So think that lodash exports an object containing a property named throttle.

For the second part of the question, I believe people will slowly start adopting ES Modules once it's not experimental anymore. At the time of this writing, it still is (Node.js v11.14).

ECMAScript Modules, --experimental-modules does not have support for named exports yet: --​experimental-modules doesn't support importing named exports from a commonjs  node --experimental-modules, requested module does not provide an export named 0 How to import/consume ES6 modules which are in .js extension with --experimental-module?


For me loading lodash as ES Library did the job, here is the NPM Package for the same.

The Lodash library exported as ES modules. https://www.npmjs.com/package/lodash-es

Then you can import utils in normal way.

import { shuffle } from 'lodash-es';

The requested module 'graphql-relay' does not provide an export , Modules are defined using a variety of import and export statements. Experimental support for ECMAScript modules is enabled by default. node via STDIN , will be treated as ES modules when the --input-type=module flag is set. Fails because // the "package.json" "exports" field // does not provide an export named ". @dandv--experimental-modules doesn't support importing named exports from a commonjs module (except node's own built-ins). if you want to use mjs files, which I don't recommend, you would need to import graphql-tools either with default import or by importing the namespace


I just had this error with nodejs express *.mjs file and --experimental-modules flag enabled for googleapis.

import { google } from "googleapis";

SyntaxError: The requested module 'googleapis' does not provide an export named 'google'

Solution

//not working!
//import { google } from "googleapis";

//working
import googleapis from "googleapis";
const { google } = googleapis;

I do not understand why this is the case; if anyone knows why, please comment.

How to use ECMAScript modules with Node.js, node --experimental-modules index.mjs. and I get: SyntaxError: The requested module 'lodash' does not provide an export named 'throttle' at  Have the same issue. And then when I use --es-module-specifier-resolution=node it breaks CommonJS modules in the namespaced library project SyntaxError: The requested module 'date-fns' does not provide an export named 'format' Have same issue with date-fns. Try using this syntax, works for me: import format from 'date-fns/format' 👀


SyntaxError: The requested module 'ttn' does not provide an export , And those, of course, had to include the backend universe. We can only have one default module exported by file. it is now in the last one, with hopes it will be mature enough to no longer require use of --experimental-modules . Code of hi.mjs export function sayHi(name) { return "Hi, " + name + "!" }. Which throws the The requested module 'apollo-server' does not provide an export named 'ApolloServer' as others mentioned above. I wanted to share this workaround in case anyone else is running into the same issues using the --experimental-modules flag or using modules w/ node 13 w/out the flag ( docs ).


ES Modules in NodeJS – Neil Lupton – JavaScript Developer , I'm executing my program like this: node --experimental-modules . node_modules/node-app-sdk/src/index.js' does not provide an export named '​data' at  Node.js will treat the following as ES modules when passed to node as the initial input, or when referenced by import statements within ES module code: Files ending in .mjs. Files ending in .js, or extensionless files, when the nearest parent package.json file contains a top-level field "type" with a value of "module".


Node.js Web Development: Server-side development with Node 10 made , NodeJS uses the CommonJS module system, but work is currently the flag --​experimental-modules , as this is experimental it should not SyntaxError: The requested module does not provide an export named 'default' at  The export statement is used when creating JavaScript modules to export live bindings to functions, objects, or primitive values from the module so they can be used by other programs with the import statement. Bindings that are exported can still be modified locally; when imported, although they can only be read by the importing module the value updates whenever it is updated by the exporting