fix: fix imports to use files owning the definitions

Importing from the root index leads to circular resolution and cause
undefined artifacts. Since the root index re-export such artifacts, the
compilation is good but it fails at runtime.

Author: raymondfeng

packages/core/src/component.ts

@@ -4,7 +4,8 @@
 // License text available at https://opensource.org/licenses/MIT
 
 import {Constructor, Provider, BoundValue} from '@loopback/context';
-import {Server, Application, ControllerClass} from '.';
+import {Server} from './server';
+import {Application, ControllerClass} from './application';
 
 /**
  * A map of name/class pairs for binding providers

packages/repository/src/connector.ts

@@ -10,7 +10,7 @@ import {
   Command,
   NamedParameters,
   PositionalParameters,
-} from '..';
+} from './common-types';
 
 /**
  * Common properties/operations for connectors

packages/repository/src/decorators/metadata.ts

@@ -1,6 +1,6 @@
 import {InspectionOptions, MetadataInspector} from '@loopback/context';
-import {MODEL_PROPERTIES_KEY, MODEL_WITH_PROPERTIES_KEY} from '../';
-import {ModelDefinition, PropertyDefinition} from '../../index';
+import {MODEL_PROPERTIES_KEY, MODEL_WITH_PROPERTIES_KEY} from './model';
+import {ModelDefinition, PropertyDefinition} from '../model';
 export class ModelMetadataHelper {
   /**
    * A utility function to simplify retrieving metadata from a target model and

packages/repository/src/legacy-juggler-bridge.ts

@@ -19,7 +19,7 @@ import {
   Command,
   NamedParameters,
   PositionalParameters,
-} from '../index';
+} from './common-types';
 
 type DataSourceType = juggler.DataSource;
 export {DataSourceType};

packages/repository/src/query.ts

@@ -1,4 +1,4 @@
-import {AnyObject} from '..';
+import {AnyObject} from './common-types';
 import * as assert from 'assert';
 
 // Copyright IBM Corp. 2017. All Rights Reserved.

packages/repository/src/types/model.ts

@@ -3,7 +3,8 @@
 // This file is licensed under the MIT License.
 // License text available at https://opensource.org/licenses/MIT
 
-import {Model, Class} from '..';
+import {Class} from '../common-types';
+import {Model} from '../model';
 import {ObjectType} from './object';
 
 // tslint:disable:no-any

packages/repository/src/types/object.ts

@@ -4,7 +4,7 @@
 // License text available at https://opensource.org/licenses/MIT
 
 import * as util from 'util';
-import {Class, AnyObject} from '..';
+import {Class, AnyObject} from '../common-types';
 import {Type} from './type';
 
 // tslint:disable:no-any

packages/rest/src/parser.ts

@@ -4,7 +4,7 @@
 // License text available at https://opensource.org/licenses/MIT
 
 import {ServerRequest} from 'http';
-import {HttpErrors} from './';
+import * as HttpErrors from 'http-errors';
 import {OperationObject, ParameterObject} from '@loopback/openapi-spec';
 import {promisify} from '@loopback/core';
 import {

packages/rest/src/providers/log-error-provider.ts

@@ -4,7 +4,7 @@
 // License text available at https://opensource.org/licenses/MIT
 
 import {Provider} from '@loopback/context';
-import {ServerRequest} from '../';
+import {ServerRequest} from 'http';
 import {LogError} from '../internal-types';
 
 export class LogErrorProvider implements Provider<LogError> {

packages/rest/src/rest-application.ts

@@ -1,5 +1,6 @@
 import {Application, ApplicationConfig, Server} from '@loopback/core';
-import {RestComponent, SequenceHandler, SequenceFunction} from './index';
+import {RestComponent} from './rest-component';
+import {SequenceHandler, SequenceFunction} from './sequence';
 import {Binding, Constructor} from '@loopback/context';
 import {format} from 'util';
 import {RestBindings} from './keys';