feat: expose decorator options

[nyannyacha]

What kind of change does this PR introduce?

Feature

Description

List of arguments to be created due to the introduction of this PR

• --decorator flag in subcommand start specifies the type of decorator to use on the main worker and event worker. If not specified, the decorator feature is disabled. (possible inputs: tc39, typescript, typescript_with_metadata)
• --decorator flag in subcommand bundle specifies the type of decorator to use when bundling. If not specified, the decorator feature is disabled. (possible inputs are same above)

Apart from the CLI arguments above, when you create a User Worker via the API in the main service, you can specify the type of decorator to use on the User Worker.

#[derive(Debug, Clone, Copy, Serialize, Deserialize)]
#[serde(rename_all = "snake_case")]
pub enum DecoratorType {
    /// Use TC39 Decorators Proposal - https://github.com/tc39/proposal-decorators
    Tc39,
    /// Use TypeScript experimental decorators.
    Typescript,
    /// Use TypeScript experimental decorators. It also emits metadata.
    TypescriptWithMetadata,
}

...

// type DecoratorType = "tc39" | "typescript" | "typescript_with_metadata"
const decoratorType = "typescript_with_metadata";

return await EdgeRuntime.userWorkers.create({
	...
	decoratorType
});

type	experimentalDecorators	emitDecoratorMetadata
tc39	-	-
typescript	✅	❌
typescript_with_metadata	✅	✅

There are differences between Typescript's implementation of the decorator specification and the decorator specification specified by Ecma TC39, see the link below for a description of the differences:
tc39/proposal-decorators#329

Note that the typescript_with_metadata option allows concrete types in design time to be output with metadata during the transpiling process. This option is equivalent to emitDecoratorMetadata of tsconfig.json.
For more information on this topic, see the link below:
https://www.typescriptlang.org/tsconfig#emitDecoratorMetadata

Resolves #296

[laktek]

We would need to also update Supabase CLI for this to work on deployed edge-functions.

[github-actions]

🎉 This PR is included in version 1.43.0 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀