fix(cli): add explicit type annotations to test mock for strict TS

Author: pyramation

packages/cli/__tests__/codegen.test.ts

@@ -14,8 +14,8 @@ jest.mock('@constructive-io/graphql-codegen', () => {
 
   return {
     generate: jest.fn(async () => ({ success: true, message: 'Generated SDK', filesWritten: [] as string[] })),
-    generateMulti: jest.fn(async () => ({ results: [], hasError: false })),
-    expandApiNamesToMultiTarget: jest.fn(() => null),
+    generateMulti: jest.fn(async (): Promise<{ results: { name: string; result: { success: boolean } }[]; hasError: boolean }> => ({ results: [], hasError: false })),
+    expandApiNamesToMultiTarget: jest.fn((): null => null),
     findConfigFile: jest.fn((): string | undefined => undefined),
     loadConfigFile: jest.fn(async () => ({ success: false, error: 'not found' })),
     splitCommas: splitCommasMock,