[BUG] TS 4.9 - "[ERR] tst-reflect: You call getType() method directly..." error when following base usage examples.

[aj-bartocci]

Describe the bug
When following the README examples for using getType I continuously get the error [ERR] tst-reflect: You call getType() method directly. You have probably wrong configuration, because tst-reflect-transformer package should replace this call by the Type instance.

I decided to clone the whole repo and to run the examples to see if maybe it was something with my configuration but I get the same issue when trying to run the base-example.

The code causing the problem

// index.ts
import { getType } from "tst-reflect";

interface ITest {
	foo: string
	bar?: string
	bazz: number
}

console.log(getType<ITest>());

// package.json
{
  "name": "example",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "npx ttsc & node index.js",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "tst-reflect": "^0.12.0"
  },
  "devDependencies": {
    "tst-reflect-transformer": "^0.12.5",
    "ttypescript": "^1.5.13"
  }
}

// tsconfig.json
{
	"compilerOptions": {
		"module": "commonjs",
		"target": "ES2020",
		"removeComments": true,
		"sourceMap": true,
		"experimentalDecorators": true,
		"rootDir": "./",
		"plugins": [
			{
				"transform": "tst-reflect-transformer"
			}
		]
	},
	"reflection": {
		"metadata": false,
		"debugMode": false
	}
}

To Reproduce
Steps to reproduce the behavior:

1. npm i
2. npm run start
3. see error...

Expected behavior
I expect that the type information would print out and not get an error.

Runtime:

• Node.js version: 18.10.0
• TypeScript version: 4.9.3
• Compiler: ttypescript 1.5.13
• Bundler: N/A

Additional context
I'm checking out this library because I would like to use it with an express server, if that is not possible please let me know.

[Hookyns]

Hi,
we discovered this last week.

It's caused by TS 4.9, they changed something in the transformer API.

I'm going to debug it this week. I hope it's just a minor change... Until then you have to downgrade to TS 4.8.x.

[aj-bartocci]

awesome thanks for the quick response, I was able to get it working with 4.8

[stepansib]

Any news? It does not work even with TS 4.8.4

[Hookyns]

@stepansib
This is working example with TS v4.8.4: https://stackblitz.com/edit/tst-reflect-example?file=index.ts
I think your issue is not related to TS version.
Please, create new issue and fill in all required information.

[fiftin]

Same issue

[Hookyns]

@fiftin
It seems to work. Check this out https://stackblitz.com/edit/tst-reflect-example-ts49?file=index.ts

If you are not able to make it work, please create a repro on StackBlitz and I'll take a look what the issue is. 🙂

[lewispham]

@Hookyns Your link is broken. It looks like a ttypescript issue. I tried with ts-patch but this error still happens. Could you consider supporting ts-patch instead of ttypescript?

[Hookyns]

@Hookyns Your link is broken. It looks like a ttypescript issue. I tried with ts-patch but this error still happens. Could you consider supporting ts-patch instead of ttypescript?

@lewispham
You mean example is broken, not the link, right? Both links seems OK.
The 4.8.4 example had some issue with dependencies, I fixed that.

You can use ts-patch for sure. As far as I know ts-patch is compatible with ttypescript out of the box.