fix: duplicate Prisma export in flow generator (#189)

Author: Michael Edelman

src/PrismaFlowGenerator.test.js.md

@@ -11,9 +11,10 @@ Generated by [AVA](https://ava.li).
     `/**␊
      * @flow␊
      */␊
-    import { GraphQLResolveInfo, GraphQLSchema } from 'graphql'␊
-    import { IResolvers } from 'graphql-tools/dist/Interfaces'␊
-    import { Options } from 'graphql-binding'␊
+    import type { GraphQLResolveInfo, GraphQLSchema } from 'graphql'␊
+    import type { IResolvers } from 'graphql-tools/dist/Interfaces'␊
+    import type { Options } from 'graphql-binding'␊
+    import type { BasePrismaOptions as BPOType } from 'prisma-binding'␊
     import { makePrismaBindingClass, BasePrismaOptions } from 'prisma-binding'␊
     ␊
     export interface Query {␊
@@ -51,7 +52,7 @@ Generated by [AVA](https://ava.li).
     User(where?: UserWhereInput): Promise<boolean>;␊
     }␊
     ␊
-    export interface Prisma {␊
+    interface Prisma {␊
       query: Query;␊
       mutation: Mutation;␊
       subscription: Subscription;␊
@@ -67,7 +68,7 @@ Generated by [AVA](https://ava.li).
     }␊
     ␊
     export interface BindingConstructor<T> {␊
-      new(options: BasePrismaOptions): T␊
+      new(options: BPOType): T␊
     }␊
     /**␊
      * Type Defs␊
@@ -783,7 +784,9 @@ Generated by [AVA](https://ava.li).
     }␊
     `␊
     ␊
-    export const Prisma: BindingConstructor<Prisma> = makePrismaBindingClass({typeDefs})␊
+    const prisma: BindingConstructor<Prisma> = makePrismaBindingClass({typeDefs})␊
+    export { prisma as Prisma } ␊
+    ␊
     ␊
     /**␊
      * Types␊

src/PrismaFlowGenerator.test.js.snap

@@ -21,7 +21,7 @@ export interface Subscription ${this.renderSubscriptions()}
 
 export interface Exists ${this.renderExists()}
 
-export interface Prisma {
+interface Prisma {
   query: Query;
   mutation: Mutation;
   subscription: Subscription;
@@ -37,7 +37,7 @@ getAbstractResolvers(filterSchema?: GraphQLSchema | string): IResolvers;
 }
 
 export interface BindingConstructor<T> {
-  new(options: BasePrismaOptions): T
+  new(options: BPOType): T
 }
 /**
  * Type Defs
@@ -55,13 +55,17 @@ ${this.renderTypes()}`
   }
   renderImports() {
     return `\
-import { GraphQLResolveInfo, GraphQLSchema } from 'graphql'
-import { IResolvers } from 'graphql-tools/dist/Interfaces'
-import { Options } from 'graphql-binding'
+import type { GraphQLResolveInfo, GraphQLSchema } from 'graphql'
+import type { IResolvers } from 'graphql-tools/dist/Interfaces'
+import type { Options } from 'graphql-binding'
+import type { BasePrismaOptions as BPOType } from 'prisma-binding'
 import { makePrismaBindingClass, BasePrismaOptions } from 'prisma-binding'`
+
   }
   renderExports() {
-    return `export const Prisma: BindingConstructor<Prisma> = makePrismaBindingClass({typeDefs})`
+    return `const prisma: BindingConstructor<Prisma> = makePrismaBindingClass({typeDefs})
+export { prisma as Prisma } 
+`
   }
   renderTypedefs() {
     return (