Tips for compiling custom GraphQL Scalars in Typescript

Encountering an issue with this straightforward GraphQL Custom Scalar as it throws a typescript error:

Error TS2351: This expression is not constructable. Type 'typeof import(".../graphql/node_modules/graphql/index")' has no construct signatures.

import GraphQLScalarType, { GraphQLInt } from 'graphql';

export const CustomScalar = new GraphQLScalarType({
    ...GraphQLInt,
    name: "CustomScalar"
})

Any suggestions on what modifications are required to allow Typescript to successfully compile it?

typescriptgraphql

Answer №1

The issue lies within the definition of types in graphql. The following code snippet demonstrates a functioning example:

import * as graphql from 'graphql';

export const CustomScalar = new graphql.GraphQLScalarType({
    ...graphql.GraphQLInt,
    name: "CustomScalar"
});

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