# MODULE_NOT_ALLOWED: Import not allowed

> Import not allowed

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| Severity | Fault                         | Stage   |
| -------- | ----------------------------- | ------- |
| error    | customer (the source package) | compile |

## What it means

An import leaves the source package or reaches something a component cannot use: an absolute path, a `..` that climbs out of the package, a Node built-in (`node:fs`), a URL, a CSS url() asset, a build-only or test-only module (`@taggor/component/build`, `@taggor/component/testing`) or the page runtime (`@taggor/runtime`).

## How to fix

Components run in the browser and see only their own files and the allowed packages: import files inside src/ with relative paths and use browser APIs instead of Node built-ins.