How Can I Import Modules Dynamically in ES6 Based on Variables?

Variable-Aware ES6 Imports

In ES6, the import statement provides a convenient way to import modules into your code. However, what if you need to import a module based on a variable name at runtime? This may arise in scenarios where you dynamically load modules based on configuration settings.

Static Imports

Unfortunately, the import statement in ES6 is statically analyzed. This means that the modules being imported must be known at compile time. Hence, you cannot use variable names to specify modules to import.

Loader API

To dynamically load modules, you need to use the Loader API. This API provides a function called System.import() that accepts a string specifying the module to be loaded. The following example shows how you can use it to load a module based on a variable name:

<code class="javascript">System.import('./utils/' + variableName).then(function(module) {
  console.log(module);
});</code>

The System.import() function returns a promise that resolves to the loaded module. You can then access the module's exported members using the module object.

Compatibility Considerations

The Loader API is supported in modern browsers and Node.js. However, you may need to use a polyfill to achieve compatibility with older browsers.

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