How Can I Pass Options to ES6 Modules During Import?

ES6 Module Importation with Custom Options

Passing options to ES6 modules during import can enhance their functionality and configuration. This article addresses the question of translating the CommonJS import syntax:

var x = require('module')(someoptions);

to ES6 module imports.

Solution:

While ES6 modules do not support direct options passing in import statements, we can achieve similar functionality through default exports and module loaders that support monadic promises.

Default Exports Method:

Create a module file (e.g., module.js):

export default function(options) {
    return {
        // Actual module functionality here
    }
}

In the main script (e.g., main.js):

import m from 'module';
var x = m(someoptions);

This approach allows for passing options to the module as a parameter.

Module Loader with Monadic Promises Method:

If using a module loader that supports monadic promises, the following syntax can be employed:

System.import('module').ap(someoptions).then(function(x) {
    …
});

With the new import operator:

const promise = import('module').then(m => m.default(someoptions));

Alternatively:

const x = (await import('module')).default(someoptions)

While dynamic imports can use this method, static imports may be preferred for performance reasons.

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