add cross-env to fix windows

tests/e2e/e2e.test.ts

@@ -1,3 +1,4 @@
+import endent from 'endent'
 import * as Execa from 'execa'
 import { dump } from 'nexus/dist/utils'
 import stripAnsi from 'strip-ansi'
@@ -55,10 +56,11 @@ function setupTestNexusPrismaProject(): TestProject {
         'reflect:prisma': 'prisma generate',
         // peer dependency check will fail since we're using yalc, e.g.:
         // " ... nexus-prisma@0.0.0-dripip+c2653557 does not officially support @prisma/client@2.22.1 ... "
-        'reflect:nexus': 'NO_PEER_DEPENDENCY_CHECK=true ts-node --transpile-only main',
+        'reflect:nexus': 'cross-env NO_PEER_DEPENDENCY_CHECK=true ts-node --transpile-only main',
         build: 'tsc',
       },
       dependencies: {
+        'cross-env': '^7.0.1',
         '@prisma/client': '^2.18.0',
         '@types/node': '^14.14.32',
         graphql: '^15.5.0',
@@ -87,7 +89,7 @@ beforeAll(() => {
 it('When bundled custom scalars are used the project type checks and generates expected GraphQL schema', () => {
   setupTestProjectCase({
     testProject,
-    prismaSchema: createPrismaSchema(`
+    prismaSchema: createPrismaSchema(endent`
       model M1 {
         id                String   @id
         someJsonField     Json
@@ -100,7 +102,7 @@ it('When bundled custom scalars are used the project type checks and generates e
         c
       }
     `),
-    main: /*ts*/ `
+    main: /*ts*/ endent`
       import { makeSchema, objectType, enumType } from 'nexus'
       import { M1, E1 } from 'nexus-prisma'
       import * as customScalars from 'nexus-prisma/scalars'