Number values are saved as strings in firestore

Question

I use this function to send data to firestore

exports.professional = functions.https.onRequest((request, response) => {
    const db = admin.firestore();

    const userId: string = request.body['userId'];
    const qualificationId: number = request.body['qualificationId'];
    const occupationId: number = request.body['occupationId'];
    const employmentType: EMPLOYMENT_TYPE = request.body['employmentType'];
    const collegeOrInstitution: string = request.body['collegeOrInstitution'];

    return db.collection('profiles').doc(userId)
        .set(
        {
            professional: {
                qualifaicationId: qualificationId,
                occupationId: occupationId,
                employmentType: employmentType,
                collegeOrInstitution: collegeOrInstitution
            }
        },
        {
            merge: true
        }).then(writeResult => {
           return response.json(
                {
                    status: 1,
                    message: 'Professional details saved successfully',
                    result: userId
                }
            )
        });
});

I have declared some variables as number but when i check the firestore doc, it is saved as strings. please see the screenshot

In the code, i have declared occupationId as a number variable but after it is saved it is a string, again please see the screenshot. Anyone know why it is changing data types?

Answer 1

Declarations, e.g.:

const occupationId: number

by themselves do not convert passed data in case if the assignment type is any (it's done so that it was possible to gradually switch from js to ts).

If you need to have a number explicitly - you need to use something that converts the actual value type for you.

One possible way to do that:

const occupationId: number = Number(request.body['occupationId']);

References:

• MDN: Number - Convert numeric strings to numbers