Alessio Gravili 243cdb1901 refactor: more reliable import map generation, supporting turbopack and tsconfig basePath (#11618)
This simplifies and cleans up import map generation and adds support for turbopack, as well as the tsconfig `compilerOptions.basePath` property.

Previously, relative import paths looked like this:

```ts
import { TestComponent as ___ } from 'test/admin/components/TestComponent.js'
```

Paths like these will be resolved based on the `compilerOptions.baseUrl` path of your tsconfig.

This had 2 problems:

### baseUrl support

 If your tsconfig baseUrl was not `"."`, this did not work, as the import map generator does not respect it
 
 ### Turbopack support
 
If Turbopack was used, certain import paths were not able to be resolved.

For example, if your component is outside the `baseDir`, the generated path looked like this:

```ts
import { TestComponent as ___ } from '/../test/admin/components/TestComponent.js'
```

This works fine in webpack, but breaks in turbopack.

## Solution

This PR ensures all import paths are relative, making them more predictable and reliable.

The same component will now generate the following import path which works in Turbopack and if a different `compilerOptions.basePath` property is set:

```ts
import { TestComponent as ___ } from '../../../test/admin/components/TestComponent.js'
```

It also adds unit tests
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Payload headless CMS Admin panel built with React

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Important

🎉 We've released 3.0! Star this repo or keep an eye on it to follow along.

Payload is the first-ever Next.js native CMS that can install directly in your existing /app folder. It's the start of a new era for headless CMS.

Benefits over a regular CMS

  • Deploy anywhere, including serverless on Vercel for free
  • Combine your front+backend in the same /app folder if you want
  • Don't sign up for yet another SaaS - Payload is open source
  • Query your database in React Server Components
  • Both admin and backend are 100% extensible
  • No vendor lock-in
  • Never touch ancient WP code again
  • Build faster, never hit a roadblock

Quickstart

Before beginning to work with Payload, make sure you have all of the required software.

pnpx create-payload-app@latest

If you're new to Payload, you should start with the website template (pnpx create-payload-app@latest -t website). It shows how to do everything - including custom Rich Text blocks, on-demand revalidation, live preview, and more. It comes with a frontend built with Tailwind all in one /app folder.

One-click templates

Jumpstart your next project by starting with a pre-made template. These are production-ready, end-to-end solutions designed to get you to market as fast as possible.

🌐 Website

Build any kind of website, blog, or portfolio from small to enterprise. Comes with a fully functional front-end built with RSCs and Tailwind.

We're constantly adding more templates to our Templates Directory. If you maintain your own template, consider adding the payload-template topic to your GitHub repository for others to find.

Features

Request Feature

🗒️ Documentation

Check out the Payload website to find in-depth documentation for everything that Payload offers.

Migrating from v2 to v3? Check out the 3.0 Migration Guide on how to do it.

🙋 Contributing

If you want to add contributions to this repository, please follow the instructions in contributing.md.

📚 Examples

The Examples Directory is a great resource for learning how to setup Payload in a variety of different ways, but you can also find great examples in our blog and throughout our social media.

If you'd like to run the examples, you can use create-payload-app to create a project from one:

npx create-payload-app --example example_name

You can see more examples at:

🔌 Plugins

Payload is highly extensible and allows you to install or distribute plugins that add or remove functionality. There are both officially-supported and community-supported plugins available. If you maintain your own plugin, consider adding the payload-plugin topic to your GitHub repository for others to find.

🚨 Need help?

There are lots of good conversations and resources in our Github Discussions board and our Discord Server. If you're struggling with something, chances are, someone's already solved what you're up against. 👇

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👏 Thanks to all our contributors

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