Error when using Typescript MongoDb Typings (Cannot find namespace)

Question

i am trying to use mongodb typings which i installed via

npm install @types/mongodb -D

now i want to use the types in a function like that

export default async function insertOne(collection:any, data:any):Promise<InsertOneWriteOpResult> {
  let db = await state.db
  let col = await db.collection(collection)
  let result = await col.insertOne(data)
  return result
}

i am specifically interested in the Type of InsertOneWriteOpResult. but i am getting the typescript compiler error:

src/utils/mongodb/collection/insert-one.ts|5 col 17 error| Cannot find namespace 'InsertOneWriteOpResult'.

i referenced the typings file in my typings.d.ts

/// <reference path="./../node_modules/@types/mongodb/index.d.ts" />

in this file i can see, that the interface is exported:

export interface InsertOneWriteOpResult {
    insertedCount: number;
    ops: Array<any>;
    insertedId: ObjectID;
    connection: any;
    result: { ok: number, n: number }
}

So my question is, which namespace do i have to use to let typescript check against InsertOptionsWriteOpResult?

Aluan Haddad · Accepted Answer · 2017-04-23 23:13:29Z

1

Do not write <reference path="./../node_modules/@types/mongodb/index.d.ts" />.

Instead write it like this

import {InsertOneWriteOpResult} from 'mongodb';

export default async function insertOne(collection: {}, data: {}): Promise<InsertOneWriteOpResult> { 
  ... 
}

answered Apr 23, 2017 at 23:13

Aluan Haddad

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1 Comment

Aluan Haddad Over a year ago

@divramod glad to help :)

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