Now that old decorator repo is not maintained any more, how do I lazily instantiate services?

[GarfieldJiang]

My using environment is Huawei Harmony Next platform, where a typescript variation (and extension) called ArkTS is used as the main programming language and standard TS and JS can be used also with limitations.

Since my app works on mobile phones, it's important that the startup time stays short. I see that old decorators for lazily instantiating (making) services are out of date now, but is there way I can do lazy stuff without adding more bindings (like providers) because resolving is somewhat time costly? Neither do I like the way to directly call the container instance on my thread.

Thanks for anything.

[notaphplover]

Hey @GarfieldJiang, as I commented in the inversify-binding-decorators repo:

This repository is deprecated. Current binding decorators are implemented in the monorepo and documented here

Current binding decorators are implemented in the monorepo and documented here. If you were using inversify@6, you can continue using inversify-binding-decorators. If you are using inversify@7, check out the new package.

My using environment is Huawei Harmony Next platform, where a typescript variation (and extension) called ArkTS is used as the main programming language and standard TS and JS can be used also with limitations.

Nice, but, can you use npm packages? I think you need to rely on an ohpm registry, right? Someone is mirroring inversify related packages in the Open Harmony registry, but the package you need is not mirrored: https://ohpm.openharmony.cn/#/cn/result?sortedType=relevancy&page=1&q=%2540inversifyjs%252Fbinding-decorators

[GarfieldJiang]

Thanks a lot for your reply. I guess some features are not support by Harmony OS of advanced reflection stuff, so I guess I'll have to stay with the basic usages with this good ioc tool here. :P (which help quite a bit already)

[notaphplover]

I'm glad it helps. Remember legacy decorators are functions, you can always call them as functions. Or you can rely on decorate provided by inversify to manually call them. I should probably update docs to ellaborare on this:

import { decorate, injectable } from 'inversify';

import { Bar } from './Bar';

class Foo {
  constructor(public readonly bar: Bar) {}
}

decorate(injectable(), Foo);
decorate(inject(Bar), Foo, 0);

The example shows how to manually decorate Foo without using decorator syntax.

[notaphplover]

I just updated docs with this entry