Search code examples
typescriptnormalizr

Import js module to typescript file (normalizr)

I'm trying use normalizr library for my typescript project. So I have defined the following entity schema (js format)

//schema.js
import { Schema, Entity } from "normalizr";
export const user = new Schema.Entity("users", options = { idAttribute: "userId" });

and an attempt to use this in .ts file

//app.ts
import { user } from "./schemas";

leads to error:

module ./schemas was resolved as "schemas.js" but "allowJs" parameter is not set

If I set allowJs = true in tsconfig.json then the error occurs:

Cannot write file ".../schemas.js" because it would overwrite input file

Also I used this approach: 

//schemas.ts
import * as normalizr from 'normalizr';
export const user = new normalizr.Schema.Entity("users");

But there is the error again:

Property Schema does not exist on type 'typeof' .../normalizr/index

How can I resolve it?

Visual Studio 2017, ts v.2.2.2

Solution

  • Looking at the type definitions of normalizr, the Entity class is inside the schema namespace (with lowercase s):

    import * as normalizr from 'normalizr';
export const user = new normalizr.schema.Entity("users");