VSCode is unable to locate the typeRoots type declarations

I have organized all the type definitions that will be used in my application into a single file. I created a folder named @types and an index.d.ts file that exports every interface/type needed.

I updated my tsconfig.json to include the @types folder:

{
    "compilerOptions": {
        "outDir": "./built",
        "allowJs": true,
        "target": "es5",
        "jsx": "react",
        "allowSyntheticDefaultImports": true,
        "lib": [
            "es2015"
        ],
        "typeRoots": [
            "./@types"
        ],
    },
    "include": [
        "./client/**/*",
        "./@types/**/*"
    ],
    "awesomeTypescriptLoaderOptions": {
        "silent": true,
        "errorsAsWarnings": true
    }
}

However, when referencing one of the interfaces from index.d.ts within my code (inside client/...), VSCode shows a "Could not find name" error message.

Is there a better solution to address this issue?

Here is an example of an interface defined in @types/index.d.ts:

export interface Agent {
    name: string;
...
}

Usage:

interface Props extends RouteComponentProps<any> {
    agent?: types.Agent;
}

Answer №1

If you are utilizing the export keyword, then @types/index.d.ts is considered a module. The only way to access types from it is by importing them. For instance, after performing the following action, you can make reference to types.Agent:

import * as types from "../path/to/@types/index";

To simplify things, you might want to eliminate all instances of the export keyword so that @types/index.d.ts is recognized as a global declaration file. This will allow you to refer to types directly as Agent. Alternatively, you can place the types within a namespace named types and refer to them using types.Agent.

It's important to note that the typeRoots compiler option is not relevant in this scenario. This setting specifies where to locate packages containing declarations that need to be loaded, but your issue lies in importing the declarations rather than loading them (considering that @types/index.d.ts aligns with your include).

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