How to fix: cannot use import statement outside a module
November 6, 2023
import outside the expected module context can lead to execution errors.
Common causes of the import error
Script context is not a module
If a script containing the
When serving js modules over the network, the server must use the correct MIME type (
Browsers do not support module features
Older browsers or certain environments may not support the ES6 module system, resulting in the import error.
How to resolve the import error
Set the type attribute to module
<script> tags that contain or reference scripts with import statements, set the
type attribute to
Ensure the server sends the correct MIME type
Configure your server to serve
.js files with the
Use module bundlers or transpilers
Employ tools like Webpack, Rollup, or Babel to bundle your modules and transpile code into a format that browsers without ES6 support can execute.
Configure Node.js for ES module support
If you're using Node.js, you may need to do the following:
- Rename your files with
.mjsextension to explicitly mark them as modules.
- Use the
"type": "module"in your
.jsfiles as modules.
- Ensure you are using a version of Node.js that supports ES modules.
Refactor to use CommonJS syntax
If modules are not a requirement, refactor the code to use CommonJS syntax, which is supported in more environments without configuration.
Testing module compatibility
After making changes to resolve the import error, test your application thoroughly to ensure that all modules are loading correctly and that no new issues have arisen.
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