Add typescript type definitions

.prettierignore

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+*.json
+*.md

.prettierrc

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+{
+  "bracketSpacing": false,
+  "singleQuote": true,
+  "printWidth": 80,
+  "trailingComma": "all"
+}

index.d.ts

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+// Copyright IBM Corp. 2018. All Rights Reserved.
+// Node module: loopback-datasource-juggler
+// This file is licensed under the MIT License.
+// License text available at https://opensource.org/licenses/MIT
+
+// Type definitions for loopback-datasource-juggler 3.x
+// Project: https://github.com/strongloop/loopback-datasource-juggler
+// Definitions by: Raymond Feng <https://github.com/raymondfeng>
+// TypeScript Version: 2.8
+
+export * from './types/common';
+export * from './types/model';
+export * from './types/relation';
+export * from './types/query';
+export * from './types/datasource';
+export * from './types/kv-model';
+export * from './types/persisted-model';
+export * from './types/scope';
+export * from './types/transaction-mixin';
+export * from './types/relation-mixin';

package.json

@@ -43,6 +43,7 @@
     "should": "^8.4.0"
   },
   "dependencies": {
+    "@types/node": "^10.0.3",
     "async": "~2.1.4",
     "bluebird": "^3.1.1",
     "debug": "^3.1.0",

tsconfig.json

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+{
+  "$schema": "http://json.schemastore.org/tsconfig",
+  "compilerOptions": {
+    "emitDecoratorMetadata": true,
+    "experimentalDecorators": true,
+    "noImplicitAny": true,
+    "strictNullChecks": true,
+
+    "lib": ["es2018", "dom"],
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "target": "es2017",
+    "sourceMap": true,
+    "declaration": true
+  },
+  "include": ["types", "index.d.ts"],
+  "exclude": ["node_modules/**"]
+}

types/common.d.ts

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+// Copyright IBM Corp. 2018. All Rights Reserved.
+// Node module: loopback-datasource-juggler
+// This file is licensed under the MIT License.
+// License text available at https://opensource.org/licenses/MIT
+
+// tslint:disable:no-any
+/**
+ * Objects with open properties
+ */
+export interface AnyObject<T = any> {
+  [property: string]: T;
+}
+
+/**
+ * Type alias for options object
+ */
+export type Options = AnyObject | null | undefined;
+
+/**
+ * Type alias for Node.js callback functions
+ */
+export type Callback<T = any> = (err: any, result?: T) => void;
+
+/**
+ * Return export type for promisified Node.js async methods.
+ *
+ * Note that juggler uses Bluebird, not the native Promise.
+ */
+export type PromiseOrVoid<T = any> = PromiseLike<T> | void;

types/datasource.d.ts

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+// Copyright IBM Corp. 2018. All Rights Reserved.
+// Node module: loopback-datasource-juggler
+// This file is licensed under the MIT License.
+// License text available at https://opensource.org/licenses/MIT
+
+import {Callback, PromiseOrVoid, Options, AnyObject} from './common';
+import {
+  ModelBuilder,
+  ModelBase,
+  ModelDefinition,
+  PropertyDefinition,
+} from './model';
+
+/**
+ * LoopBack models can manipulate data via the DataSource object.
+ * Attaching a `DataSource` to a `Model` adds instance methods and static methods to the `Model`.
+ *
+ * Define a data source to persist model data.
+ * To create a DataSource programmatically, call `createDataSource()` on the LoopBack object; for example:
+ * ```js
+ * var oracle = loopback.createDataSource({
+ *   connector: 'oracle',
+ *   host: '111.22.333.44',
+ *   database: 'MYDB',
+ *   username: 'username',
+ *   password: 'password'
+ * });
+ * ```
+ *
+ * All classes in single dataSource share same the connector type and
+ * one database connection.
+ *
+ * For example, the following creates a DataSource, and waits for a connection callback.
+ *
+ * ```
+ * var dataSource = new DataSource('mysql', { database: 'myapp_test' });
+ * dataSource.define(...);
+ * dataSource.on('connected', function () {
+ *     // work with database
+ * });
+ * ```
+ * @class DataSource
+ * @param {String} [name] Optional name for datasource.
+ * @options {Object} settings Database-specific settings to establish connection (settings depend on specific connector).
+ * The table below lists a typical set for a relational database.
+ * @property {String} connector Database connector to use.  For any supported connector, can be any of:
+ *
+ * - The connector module from `require(connectorName)`.
+ * - The full name of the connector module, such as 'loopback-connector-oracle'.
+ * - The short name of the connector module, such as 'oracle'.
+ * - A local module under `./connectors/` folder.
+ * @property {String} host Database server host name.
+ * @property {String} port Database server port number.
+ * @property {String} username Database user name.
+ * @property {String} password Database password.
+ * @property {String} database Name of the database to use.
+ * @property {Boolean} debug Display debugging information. Default is false.
+ *
+ * The constructor allows the following styles:
+ *
+ * 1. new DataSource(dataSourceName, settings). For example:
+ *   - new DataSource('myDataSource', {connector: 'memory'});
+ *   - new DataSource('myDataSource', {name: 'myDataSource', connector: 'memory'});
+ *   - new DataSource('myDataSource', {name: 'anotherDataSource', connector: 'memory'});
+ *
+ * 2. new DataSource(settings). For example:
+ *   - new DataSource({name: 'myDataSource', connector: 'memory'});
+ *   - new DataSource({connector: 'memory'});
+ *
+ * 3. new DataSource(connectorModule, settings). For example:
+ *   - new DataSource(connectorModule, {name: 'myDataSource})
+ *   - new DataSource(connectorModule)
+ */
+export declare class DataSource {
+  name: string;
+  settings: AnyObject;
+
+  connected?: boolean;
+  connecting?: boolean;
+
+  DataAccessObject: AnyObject & {prototype: AnyObject};
+
+  constructor(name?: string, settings?: AnyObject, modelBuilder?: ModelBuilder);
+
+  constructor(
+    connectorModule: AnyObject,
+    settings?: AnyObject,
+    modelBuilder?: ModelBuilder,
+  );
+
+  /**
+   * Create a model class
+   * @param name Name of the model
+   * @param properties An object of property definitions
+   * @param options Options for model settings
+   */
+  createModel<T extends typeof ModelBase>(
+    name: string,
+    properties?: AnyObject,
+    options?: Options,
+  ): T;
+
+  automigrate(
+    models: string | string[],
+    callback?: Callback,
+  ): PromiseOrVoid<any>;
+
+  autoupdate(
+    models: string | string[],
+    callback?: Callback,
+  ): PromiseOrVoid<any>;
+
+  discoverModelDefinitions(
+    options?: Options,
+    callback?: Callback<ModelDefinition[]>,
+  ): PromiseOrVoid<ModelDefinition[]>;
+
+  discoverModelProperties(
+    modelName: string,
+    options?: Options,
+    callback?: Callback<PropertyDefinition[]>,
+  ): PromiseOrVoid<PropertyDefinition[]>;
+
+  discoverPrimaryKeys(
+    modelName: string,
+    options?: Options,
+    callback?: Callback<PropertyDefinition[]>,
+  ): PromiseOrVoid<PropertyDefinition[]>;
+
+  discoverForeignKeys(
+    modelName: string,
+    options?: Options,
+    callback?: Callback<PropertyDefinition[]>,
+  ): PromiseOrVoid<PropertyDefinition[]>;
+
+  discoverExportedForeignKeys(
+    modelName: string,
+    options?: Options,
+    callback?: Callback<PropertyDefinition[]>,
+  ): PromiseOrVoid<PropertyDefinition[]>;
+
+  discoverAndBuildModels(
+    modelName: string,
+    options?: Options,
+    callback?: Callback<{[name: string]: typeof ModelBase}>,
+  ): PromiseOrVoid<{[name: string]: typeof ModelBase}>;
+
+  discoverSchema(
+    tableName: string,
+    options?: Options,
+    callback?: Callback<AnyObject>,
+  ): PromiseOrVoid<AnyObject>;
+
+  discoverSchemas(
+    tableName: string,
+    options?: Options,
+    callback?: Callback<AnyObject[]>,
+  ): PromiseOrVoid<AnyObject[]>;
+
+  buildModelFromInstance(
+    modelName: string,
+    jsonObject: AnyObject,
+    options?: Options,
+  ): typeof ModelBase;
+
+  connect(callback?: Callback): PromiseOrVoid;
+  disconnect(callback?: Callback): PromiseOrVoid;
+  ping(callback?: Callback): PromiseOrVoid;
+}