# All files / domains/inputField/compiler fieldType.ts

64.29% Statements 9/14
25% Branches 1/4
50% Functions 1/2
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     import { GraphQLType } from 'graphql';
    import { inferTypeByTarget } from '~/services/utils';
    import { InputFieldError } from '../index';

    import { resolveType } from '~/services/utils';

    export function resolveTypeOrThrow(
      type: any,
      target: Function,
      fieldName: string,
    ): GraphQLType {
      const resolvedType = resolveType(type, true);

      if (!resolvedType) {
        Ithrow new InputFieldError(
          target,
          fieldName,
          `Forced type is incorrect. Make sure to use either native graphql type or class that is registered with @Type decorator`,
        );
      }

      return resolvedType;
    }

    export function inferTypeOrThrow(
      target: Function,
      fieldName: string,
    ): GraphQLType {
      const inferedType = inferTypeByTarget(target.prototype, fieldName);
      if (!inferedType) {
        throw new InputFieldError(
          target,
          fieldName,
          `Could not infer return type and no type is forced. In case of circular dependencies make sure to force types of instead of infering them.`,
        );
      }
      return resolveType(inferedType, true);
    }