feat: Add TypeScript support (#9550)

.babelrc

@@ -1,12 +1,12 @@
 {
     "plugins": [
-        "@babel/plugin-transform-flow-strip-types",
-        "@babel/plugin-proposal-object-rest-spread"
+        "@babel/plugin-transform-flow-strip-types"
     ],
     "presets": [
+        "@babel/preset-typescript",
         ["@babel/preset-env", {
             "targets": {
-                "node": "14", 
+                "node": "18"
             },
             "exclude": ["proposal-dynamic-import"]
         }]

.github/workflows/ci.yml

@@ -138,6 +138,17 @@ jobs:
         uses: mansona/npm-lockfile-version@v1
         with:
           version: 2
+  check-types:
+    name: Check Types
+    timeout-minutes: 5
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - run: npm ci
+      - name: Build types
+        run: npm run build:types
+      - name: Check types
+        run: npm run test:types
   check-mongo:
     strategy:
       matrix:

.gitignore

@@ -46,6 +46,8 @@ node_modules
 
 # Babel.js
 lib/
+# types/* once we have full typescript support, we can generate types from the typescript files
+!types/tsconfig.json
 
 # cache folder
 .cache

package.json

@@ -15,7 +15,8 @@
     "LICENSE",
     "NOTICE",
     "postinstall.js",
-    "README.md"
+    "README.md",
+    "types"
   ],
   "license": "Apache-2.0",
   "dependencies": {
@@ -73,6 +74,8 @@
     "@babel/plugin-proposal-object-rest-spread": "7.20.7",
     "@babel/plugin-transform-flow-strip-types": "7.26.5",
     "@babel/preset-env": "7.26.0",
+    "@babel/preset-typescript": "7.26.0",
+    "@definitelytyped/dtslint": "0.0.163",
     "@saithodev/semantic-release-backmerge": "4.0.1",
     "@semantic-release/changelog": "6.0.3",
     "@semantic-release/commit-analyzer": "13.0.1",
@@ -106,6 +109,7 @@
     "nyc": "17.1.0",
     "prettier": "2.0.5",
     "semantic-release": "24.2.1",
+    "typescript": "5.7.3",
     "yaml": "2.7.0"
   },
   "scripts": {
@@ -114,9 +118,10 @@
     "ci:definitionsCheck": "node ./ci/definitionsCheck.js",
     "definitions": "node ./resources/buildConfigDefinitions.js && prettier --write 'src/Options/*.js'",
     "docs": "jsdoc -c ./jsdoc-conf.json",
-    "lint": "flow && eslint --cache ./",
+    "lint": "eslint --cache ./",
     "lint-fix": "eslint --fix --cache ./",
-    "build": "babel src/ -d lib/ --copy-files",
+    "build": "babel src/ -d lib/ --copy-files --extensions '.ts,.js'",
+    "build:types": "tsc",
     "watch": "babel --watch src/ -d lib/ --copy-files",
     "test:mongodb:runnerstart": "cross-env MONGODB_VERSION=${MONGODB_VERSION:=$npm_config_dbversion} MONGODB_TOPOLOGY=${MONGODB_TOPOLOGY:=standalone} mongodb-runner start -t ${MONGODB_TOPOLOGY} --version ${MONGODB_VERSION} -- --port 27017",
     "test:mongodb:testonly": "cross-env MONGODB_VERSION=${MONGODB_VERSION:=$npm_config_dbversion} MONGODB_TOPOLOGY=${MONGODB_TOPOLOGY:=standalone} TESTING=1 jasmine",
@@ -125,6 +130,7 @@
     "test:mongodb:7.0.16": "npm run test:mongodb --dbversion=7.0.16",
     "test:mongodb:8.0.4": "npm run test:mongodb --dbversion=8.0.4",
     "test:postgres:testonly": "cross-env PARSE_SERVER_TEST_DB=postgres PARSE_SERVER_TEST_DATABASE_URI=postgres://postgres:password@localhost:5432/parse_server_postgres_adapter_test_database npm run testonly",
+    "test:types": "dtslint --expectOnly types",
     "pretest": "cross-env MONGODB_VERSION=${MONGODB_VERSION:=8.0.4} MONGODB_TOPOLOGY=${MONGODB_TOPOLOGY:=standalone} mongodb-runner start -t ${MONGODB_TOPOLOGY} --version ${MONGODB_VERSION} -- --port 27017",
     "testonly": "cross-env MONGODB_VERSION=${MONGODB_VERSION:=8.0.4} MONGODB_TOPOLOGY=${MONGODB_TOPOLOGY:=standalone} TESTING=1 jasmine",
     "test": "npm run testonly",
@@ -136,6 +142,7 @@
     "postinstall": "node -p 'require(\"./postinstall.js\")()'",
     "madge:circular": "node_modules/.bin/madge ./src --circular"
   },
+  "types": "types/index.d.ts",
   "engines": {
     "node": ">=18.20.4 <19.0.0 || >=20.18.0 <21.0.0 || >=22.12.0 <23.0.0"
   },

spec/.babelrc

@@ -3,12 +3,12 @@
         "@babel/plugin-proposal-object-rest-spread"
     ],
     "presets": [
+        "@babel/preset-typescript",
         ["@babel/preset-env", {
             "targets": {
-                "node": "14"
+                "node": "18"
             }
         }]
     ],
-    "sourceMaps": "inline",
-    "retainLines": true
+    "sourceMaps": "inline"
 }

tsconfig.json

@@ -0,0 +1,13 @@
+{
+  "compilerOptions": {
+    "declaration": true,
+    "emitDeclarationOnly": true,
+    "outDir": "types",
+    "noImplicitAny": false,
+    "allowJs": false,
+    "skipLibCheck": true
+  },
+  "include": [
+    "src/*.ts"
+  ]
+}

types/logger.d.ts

@@ -0,0 +1,2 @@
+export declare function setLogger(aLogger: any): void;
+export declare function getLogger(): any;

types/tsconfig.json

@@ -0,0 +1,18 @@
+{
+  "compilerOptions": {
+      "module": "commonjs",
+      "lib": ["es6"],
+      "noImplicitAny": true,
+      "noImplicitThis": true,
+      "strictFunctionTypes": true,
+      "strictNullChecks": true,
+      "types": [],
+      "noEmit": true,
+      "forceConsistentCasingInFileNames": true,
+
+      // If the library is an external module (uses `export`), this allows your test file to import "mylib" instead of "./index".
+      // If the library is global (cannot be imported via `import` or `require`), leave this out.
+      "baseUrl": ".",
+      "paths": { "parse": ["."] }
+  }
+}