Unbound type parameter, missing type node.

[ArashMotamedi]

Love this library. Thank you!

Encountered an issue, where typescript-is is unable to parse and produce a createEquals for the following type:

import { createEquals } from "typescript-is"

interface IBlogPost {
    id: number;
    title: string;
    body: string;
}

interface IComment {
    postId: number;
    comment: string;
}

interface ITableTypes {
    "BlogPosts": IBlogPost;
    "BlogComments": IComment;
}

type IInsertRequest = {
    [key in keyof ITableTypes]: {
        command: "insert",
        table: key,
        value: ITableTypes[key]
    }
}[keyof ITableTypes];

const isInsertRequest = createEquals<IInsertRequest>();
// Failed to transform node at ^^^^^^^^^^^^^^^^^^^
// Unbound type parameter, missing type node

Meantime, that type definition IInsertRequest doesn't trip up TS or VS Code:

// TypeScript is happy with the following object creations 
// and can parse/type/intellisense them correctly
const request1: IInsertRequest = {
    command: "insert",
    table: "BlogPosts",
    value: {
        id: 1,
        title: "title",
        body: "body",
    }
}

const request2: IInsertRequest = {
    command: "insert",
    table: "BlogComments",
    value: {
        postId: 1,
        comment: "comment",
    }
}

Appreciate your help taking a look at this. Is there something I'm doing wrong? Can I write this differently for it to compile and produce the appropriate equality function?

If curious, the way I'm intending to use that createEquals result is to take a random object (e.g. sent via API) and check to see if it's a valid insertion request (payload specifies a known table name and the corresponding value of the appropriate type for that table). Something like this:

function insert(request: any) { // coming from an http request, etc.
    if (isInsertRequest(request)) {
        const { table, value } = request;
        // INSERT INTO {table} VALUES {value}
    }
}