feat: switch to typescript

.eslintrc.js

@@ -3,21 +3,19 @@ module.exports = {
     es6: true,
     node: true,
   },
-  extends: ['eslint:recommended', 'plugin:import/errors', 'plugin:import/warnings', 'prettier'],
-  parser: 'babel-eslint',
-  plugins: ['import', 'prettier'],
+  extends: [
+    'eslint:recommended',
+    'plugin:import/errors',
+    'plugin:import/warnings',
+    'plugin:import/typescript',
+    'plugin:@typescript-eslint/recommended',
+    'prettier',
+    'prettier/@typescript-eslint',
+  ],
+  parser: '@typescript-eslint/parser',
+  plugins: ['import', 'prettier', '@typescript-eslint'],
   rules: {
     'no-console': 'off',
-    'no-var': 'error',
-    'no-unused-vars': ['warn', { args: 'none' }],
     'prettier/prettier': 'error',
   },
-  settings: {
-    'import/resolver': {
-      node: {
-        extensions: ['.js', '.jsx', '.es', '.coffee', '.cjsx'],
-        paths: [__dirname],
-      },
-    },
-  },
 }

.vscode/settings.json

@@ -4,5 +4,6 @@
     "source.fixAll.eslint": true
   },
   "files.insertFinalNewline": true,
-  "files.trimTrailingWhitespace": true
+  "files.trimTrailingWhitespace": true,
+  "typescript.tsdk": "node_modules/typescript/lib"
 }

app.js → app.ts

@@ -6,16 +6,13 @@ import Cache from 'node-cache'
 import mongoose from 'mongoose'
 import childProcess from 'child_process'
 import { trim } from 'lodash'
+import bytes from 'bytes'
 
 import config from './config'
-import {
-  captureException,
-  sentryTracingMiddileaware,
-  reportCustomExceptionsMiddleware,
-} from './sentry'
+import { captureException, sentryTracingMiddileaware } from './src/sentry'
 
-import './models'
-import { router } from './controllers'
+import './src/models'
+import { router } from './src/controllers'
 
 const app = new Koa()
 
@@ -30,7 +27,6 @@ mongoose.connection.on('error', () => {
 })
 
 app.use(sentryTracingMiddileaware)
-app.use(reportCustomExceptionsMiddleware)
 
 // Logger
 if (!config.disableLogger) {
@@ -44,9 +40,11 @@ const _cache = new Cache({
 })
 app.use(
   cache({
-    threshold: '1GB', // Compression is handled by nginx.
-    get: (key, maxAge) => _cache.get(key),
-    set: (key, value, maxAge) => _cache.set(key, value, maxAge > 0 ? maxAge : null),
+    threshold: bytes('1GB'), // Compression is handled by nginx.
+    get: async (key) => _cache.get(key),
+    set: async (key, value, maxAge) => {
+      _cache.set(key, value, maxAge > 0 ? maxAge : 0)
+    },
   }),
 )
 

babel.config.js

@@ -1,4 +1,4 @@
 module.exports = {
-  presets: [['@babel/preset-env', { targets: { node: '14' } }]],
+  presets: [['@babel/preset-env', { targets: { node: '14' } }], '@babel/preset-typescript'],
   plugins: [require.resolve('babel-plugin-add-module-exports')],
 }

index.js

@@ -1,5 +1,6 @@
 require('@babel/register')({
   cache: false,
+  extensions: ['.ts'],
 })
 
 require('./app')