Merge remote-tracking branch 'origin/master'

extension/README.md

@@ -7,7 +7,7 @@ See sample extension at https://github.com/bpatrik/pigallery2-sample-extension.
 # Extension Usage
 
 Extension folder can be set through config. For the docker-ised version,
-they live under the `config/extension` folder in their own subdirectory. 
+they live under the `config/extension` folder in their own subdirectory.
 
 # Extension development
 
@@ -21,16 +21,20 @@ You need at least a `server.js` in your extension folder that exports a `init(ex
 <path to the extension fodler>/myextension/package.js <- this is optional. You can add extra npm packages here
 <path to the extension fodler>/myextension/server.js <- this is needed
 ```
+
 Where `<path to the extension fodler>` is what you set in the config and `myextension` is the name of your extension.
-Note: you do not need to add your `node_modules` folder. The app will call `npm intall` when initializing your extension.
+Note: you do not need to add your `node_modules` folder. The app will call `npm install` when initializing your extension.
+
 ## Extension environment
 
 The app runs the extension the following way:
-* It reads all extensions in `<path to the extension fodler>/**` folder
-* Checks if `package.js` is present. If yes installs the packages
-* Checks if `server.js` is present. If yes, calls the `init` function.
+
+- It reads all extensions in `<path to the extension fodler>/**` folder
+- Checks if `package.js` is present. If yes installs the packages
+- Checks if `server.js` is present. If yes, calls the `init` function.
 
 ### Init and cleanup lifecycle
+
 There is also a `cleanUp` function that you can implement in your extension.
 The app can call your `init` and `cleanUp` functions any time.
 Always calls the `init` first then `cleanUp` later.
@@ -39,8 +43,7 @@ Main use-case: `init` is called on app startup. `cleanUp` and `init` called late
 ## Extension interface
 
 The app calls the `init` and `cleanUp` function with a `IExtensionObject` object.
-See https://github.com/bpatrik/pigallery2/blob/master/src/backend/model/extension/IExtension.ts  for details.
-
+See https://github.com/bpatrik/pigallery2/blob/master/src/backend/model/extension/IExtension.ts for details.
 
 `IExtensionObject` exposes lifecycle events, configs, RestAPis with some limitation.
 Changes made during the these public apis you do not need to clean up in the `cleanUp` function.
@@ -50,7 +53,7 @@ App also exposes private `_app` object to provide access to low level API. Any c
 
 See sample server.js at https://github.com/bpatrik/pigallery2-sample-extension.
 
-It is recommended to do the development in `ts`, so creating a `server.ts`. 
+It is recommended to do the development in `ts`, so creating a `server.ts`.
 Note: You need to manually transpile your `server.ts` file to `server.js` as the app does not do that for you.
 This doc assumes you do the development in `ts`.
 
@@ -59,23 +62,23 @@ This doc assumes you do the development in `ts`.
 You can import package from both the main app package.json and from your extension package.json.
 To import packages from the main app, you import as usual.
 For packages from the extension, you always need to write relative path. i.e.: prefix with `./node_modules`
+
 ```ts
 // Including dev-kit interfaces. It is not necessary, only helps development with types.
 // You need to prefix them with ./node_modules
-import {IExtensionObject} from './node_modules/pigallery2-extension-kit';
+import { IExtensionObject } from "./node_modules/pigallery2-extension-kit";
 
 // Including prod extension packages. You need to prefix them with ./node_modules
 // lodash does not have types
 // eslint-disable-next-line @typescript-eslint/ban-ts-comment
 // @ts-ignore
-import * as _ from './node_modules/lodash';
+import * as _ from "./node_modules/lodash";
 
 // Importing packages that are available in the main app (listed in the packages.json in pigallery2)
-import {Column, Entity, Index, PrimaryGeneratedColumn} from 'typeorm';
+import { Column, Entity, Index, PrimaryGeneratedColumn } from "typeorm";
 ```
 
-
-####  pigallery2 extension dev-kit
+#### pigallery2 extension dev-kit
 
 It is recommended to use the `pigallery2-extension-kit` node package.
 `npm install pigallery2-extension-kit --save` to your extension.
@@ -87,17 +90,14 @@ You can then `import {IExtensionObject} from './node_modules/pigallery2-extensio
 
 See https://github.com/bpatrik/pigallery2/blob/master/src/backend/model/extension/IExtension.ts to understand what contains `IExtensionObject`.
 
-NOTE: this is not needed to create an extension it only helps your IDE and your  development. These type definitions are removed when you compile `ts` to `js`.
+NOTE: this is not needed to create an extension it only helps your IDE and your development. These type definitions are removed when you compile `ts` to `js`.
 
 #### `init` function
 
 You need to implement the `init` function for a working extension:
 
 ```ts
-
-export const init = async (extension: IExtensionObject<void>): Promise<void> => {
-  
-}
+export const init = async (extension: IExtensionObject<void>): Promise<void> => {};
 ```
 
 #### pigallery2 lifecycle `events`
@@ -105,5 +105,4 @@ export const init = async (extension: IExtensionObject<void>): Promise<void> =>
 Tha app exposes multiple interfaces for the extensions to interact with the main app. `events` are one of the main interfaces.
 Here are their flow:
 
-
 ![events_lifecycle](events.png)