CODEWITHSUNDEEP
javascriptnode.jsecmascript-6javascript-import
Tomáš Zato
Tomáš Zato

Reputation: 53139

The `import` support in Node.JS is a lie

Or maybe I'm doing something wrong?

The documentation states, that there is experimental ES6 module loader in Node.JS since version 10. I am waiting for this for a long time - loading of modules is the only thing that prevents me from smoothly using same code in browser and node.

My code:

import findNextBracket from "./BracketFinder.js";

How I start node:

node --experimental-modules ConvertToEs6Modules.js

How I get disappointed:

(node:7116) ExperimentalWarning: The ESM module loader is experimental.
D:\web\lines\ConvertToEs6Modules.js:1
(function (exports, require, module, __filename, __dirname) { import findNextBracket  from "./BracketFinder.js";
                                                                     ^^^^^^^^^^^^^^^

SyntaxError: Unexpected identifier
    at new Script (vm.js:74:7)
    at createScript (vm.js:246:10)
    at Proxy.runInThisContext (vm.js:298:10)
    at Module._compile (internal/modules/cjs/loader.js:670:28)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:713:10)
    at Module.load (internal/modules/cjs/loader.js:612:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:551:12)
    at Function.Module._load (internal/modules/cjs/loader.js:543:3)
    at createDynamicModule (internal/modules/esm/translators.js:54:15)
    at setExecutor (internal/modules/esm/create_dynamic_module.js:50:23)

Also Visual Studio hangs if you try to run such file in it, instead of showing the error above.

Upvotes: 2

Views: 993

Answers (1)

kingdaro
kingdaro

Reputation: 12008

Your files need to have the .mjs extension. See the docs here

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

Upvotes: 4

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