feature(@nestjs) improve typings, better type checking

Author: kamilmysliwiec

src/common/decorators/core/dependencies.decorator.ts

@@ -1,7 +1,7 @@
 import 'reflect-metadata';
 import { PARAMTYPES_METADATA } from '../../constants';
 
-const flatten = arr => {
+export function flatten(arr) {
   const flat = [].concat(...arr);
   return flat.some(Array.isArray) ? flatten(flat) : flat;
 };

src/common/decorators/http/create-route-param-metadata.decorator.ts

@@ -2,7 +2,7 @@ import {
   ROUTE_ARGS_METADATA,
   CUSTOM_ROUTE_AGRS_METADATA,
 } from '../../constants';
-import { CustomParamFactory } from '../../interfaces/custom-route-param-factory.interface';
+import { CustomParamFactory } from '../../interfaces/features/custom-route-param-factory.interface';
 import { RouteParamsMetadata, ParamData } from './route-params.decorator';
 import { PipeTransform } from '../../index';
 import { isNil, isString } from '../../utils/shared.utils';

src/common/interceptors/file.interceptor.ts

@@ -1,5 +1,5 @@
 import * as multer from 'multer';
-import { NestInterceptor } from './../interfaces/nest-interceptor.interface';
+import { NestInterceptor } from './../interfaces/features/nest-interceptor.interface';
 import { Observable } from 'rxjs/Observable';
 import { MulterOptions } from '../interfaces/external/multer-options.interface';
 

src/common/interceptors/files.interceptor.ts

@@ -1,5 +1,5 @@
 import * as multer from 'multer';
-import { NestInterceptor } from './../interfaces/nest-interceptor.interface';
+import { NestInterceptor } from './../interfaces/features/nest-interceptor.interface';
 import { Observable } from 'rxjs/Observable';
 import { MulterOptions } from '../interfaces/external/multer-options.interface';
 

src/common/interfaces/configuration-provider.interface.ts

@@ -1,5 +1,5 @@
-import { NestInterceptor } from './nest-interceptor.interface';
-import { CanActivate } from './can-activate.interface';
+import { NestInterceptor } from './features/nest-interceptor.interface';
+import { CanActivate } from './features/can-activate.interface';
 
 export interface ConfigurationProvider {
   getGlobalInterceptors(): NestInterceptor[];

src/common/interfaces/exceptions/exception-filter-metadata.interface.ts

@@ -1,7 +1,7 @@
 import { ExceptionFilter } from './exception-filter.interface';
-import { Metatype } from '../metatype.interface';
+import { Type } from '../type.interface';
 
 export interface ExceptionFilterMetadata {
   func: ExceptionFilter['catch'];
-  exceptionMetatypes: Metatype<any>[];
+  exceptionMetatypes: Type<any>[];
 }

src/common/interfaces/exceptions/rpc-exception-filter-metadata.interface.ts

@@ -1,7 +1,7 @@
 import { RpcExceptionFilter } from './rpc-exception-filter.interface';
-import { Metatype } from '../metatype.interface';
+import { Type } from '../type.interface';
 
 export interface RpcExceptionFilterMetadata {
   func: RpcExceptionFilter['catch'];
-  exceptionMetatypes: Metatype<any>[];
+  exceptionMetatypes: Type<any>[];
 }