What is @ioc:Adonis/Core/Validator?

[AlirezaEthDev]

In TokenSchema.js compiled from TypeScript there is this snippet code:
const Validator_1 = require("@ioc:Adonis/Core/Validator"); When I try TokensController.js (That includes TokenSchema.js) this error throwed:

Error: Cannot find module '@ioc:Adonis/Core/Validator'
Require stack:
- C:\cryptoPriceTracker\backapp.dex\app\Validation\TokenSchema.js
- C:\cryptoPriceTracker\backapp.dex\app\Controllers\Http\TokensController.js
- C:\cryptoPriceTracker\backapp.dex\server.js
    at Module._resolveFilename (node:internal/modules/cjs/loader:1145:15)
    at Module._load (node:internal/modules/cjs/loader:986:27)
    at Module.require (node:internal/modules/cjs/loader:1233:19)
    at require (node:internal/modules/helpers:179:18)
    at Object.<anonymous> (C:\cryptoPriceTracker\backapp.dex\app\Validation\TokenSchema.js:4:21)
    at Module._compile (node:internal/modules/cjs/loader:1358:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1416:10)
    at Module.load (node:internal/modules/cjs/loader:1208:32)
    at Module._load (node:internal/modules/cjs/loader:1024:12)
    at Module.require (node:internal/modules/cjs/loader:1233:19) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    'C:\\cryptoPriceTracker\\backapp.dex\\app\\Validation\\TokenSchema.js',
    'C:\\cryptoPriceTracker\\backapp.dex\\app\\Controllers\\Http\\TokensController.js',
    'C:\\cryptoPriceTracker\\backapp.dex\\server.js'
  ]
}

Node.js v20.15.0

What is @ioc:Adonis/Core/Validator exactly and how should we eliminate the issue?

[RomainLanz]

Probably a duplicate of: https://github.com/orgs/adonisjs/discussions/4654

As per your question, the @ioc was a particular import extension allowing us to do a dependency injection in AdonisJS 5. This is no longer in used in AdonisJS 6.