feat(app): build structure

Author: SnowMarble

.editorconfig

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+# EditorConfig is awesome: https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = crlf
+charset = utf-8
+trim_trailing_whitespace = false
+insert_final_newline = true

.eslintrc.json

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+{
+    "env": {
+        "browser": true,
+        "es2021": true
+    },
+    "extends": [
+        "eslint:recommended",
+        "plugin:@typescript-eslint/recommended",
+        "prettier"
+    ],
+    "parser": "@typescript-eslint/parser",
+    "parserOptions": {
+        "ecmaVersion": "latest",
+        "sourceType": "module"
+    },
+    "plugins": [
+        "@typescript-eslint"
+    ],
+    "rules": {
+    }
+}

.prettierrc

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+{
+  "semi": false,
+  "singleQuote": true
+}

package.json

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+{
+  "name": "pg-examination-server",
+  "version": "1.0.0",
+  "repository": "https://github.com/dimipay/pg-examination-server",
+  "author": "kraccoon-dev <[email protected]>",
+  "license": "MIT",
+  "scripts": {
+    "dev": "nodemon src/server.ts",
+    "lint": "eslint src/**/*.ts"
+  },
+  "dependencies": {
+    "dotenv": "^16.0.1",
+    "express": "^4.18.1"
+  },
+  "devDependencies": {
+    "@tsconfig/node16-strictest": "^1.0.3",
+    "@types/express": "^4.17.13",
+    "@types/node": "^18.7.2",
+    "@typescript-eslint/eslint-plugin": "^5.33.0",
+    "@typescript-eslint/parser": "^5.33.0",
+    "eslint": "^8.21.0",
+    "nodemon": "^2.0.19",
+    "prettier": "^2.7.1",
+    "ts-node": "^10.9.1",
+    "typescript": "^4.7.4"
+  }
+}

src/app.ts

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+import express from 'express'
+import config from './config'
+
+import type { Application } from 'express'
+
+export default class {
+  public app: Application
+
+  constructor() {
+    this.app = express()
+  }
+
+  public listen(port = config.port): void {
+    this.app.listen(port, () => {
+      console.log(`Server is running on port ${port}`)
+    })
+  }
+}

src/config.ts

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+import 'dotenv/config'
+
+const check = (key: string, defaultValue?: string): string => {
+  if (typeof process.env[key] === 'undefined') {
+    if (typeof defaultValue === 'undefined') {
+      throw new Error(`${key} is not defined in .env`)
+    }
+    return defaultValue
+  }
+  return process.env[key] as string
+}
+
+export default {
+  port: check('PORT', '3000'),
+}

src/server.ts

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+import App from './app'
+
+const app = new App()
+
+app.listen()

tsconfig.json

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+{
+  "extends": "@tsconfig/node16-strictest/tsconfig.json"
+}