Add tsc

.eslintrc.json

@@ -1,4 +1,17 @@
 {
   "root": true,
-  "extends": "hexo"
+  "parser": "@typescript-eslint/parser",
+  "plugins": ["node", "@typescript-eslint"],
+  "extends": ["hexo", "plugin:@typescript-eslint/eslint-recommended", "plugin:@typescript-eslint/recommended"],
+  "ignorePatterns": ["built"],
+  "parserOptions": {
+    "ecmaVersion": 2018,
+    "sourceType": "module",
+    "ecmaFeatures": {
+      "modules": true
+    }
+  },
+  "rules": {
+    "node/no-unsupported-features/es-syntax": 0
+  }
 }

.gitignore

@@ -4,4 +4,5 @@ node_modules/
 .nyc_output/
 *.log
 docs/
-coverage/
+coverage/
+built

.tsconfig.json

@@ -0,0 +1,13 @@
+{
+    "compilerOptions": {
+        "outDir": "./built",
+        "allowJs": true,
+        "target": "ES2018",
+        "lib": ["ES2018"],
+        "module": "commonjs",
+        "esModuleInterop": true
+    },
+    "include": [
+        "./src/**/*"
+    ]
+}

package.json

@@ -2,18 +2,21 @@
   "name": "warehouse",
   "version": "4.0.0",
   "description": "Simple JSON-based database",
-  "main": "lib/database",
+  "main": "built/database",
   "directories": {
-    "lib": "./lib"
+    "lib": "./built"
   },
   "files": [
-    "lib/"
+    "built/"
   ],
   "scripts": {
-    "eslint": "eslint lib test",
+    "pretest": "npm run typescript",
+    "typescript": "tsc --build .tsconfig.json",
+    "eslint": "eslint src test",
     "test": "mocha \"test/scripts/**/*.js\"",
     "test-cov": "nyc --reporter=lcov --reporter=text-summary npm test",
-    "jsdoc": "jsdoc --configure .jsdoc.json"
+    "jsdoc": "jsdoc --configure .jsdoc.json",
+    "prepublish": "npm run typescript"
   },
   "repository": "hexojs/warehouse",
   "keywords": [
@@ -32,6 +35,12 @@
     "rfdc": "^1.1.4"
   },
   "devDependencies": {
+    "@types/bluebird": "^3.5.32",
+    "@types/graceful-fs": "^4.1.3",
+    "@types/jsonstream": "^0.8.30",
+    "@types/node": "^14.0.5",
+    "@typescript-eslint/eslint-plugin": "^3.0.0",
+    "@typescript-eslint/parser": "^3.0.0",
     "chai": "^4.2.0",
     "chai-as-promised": "^7.1.1",
     "eslint": "^7.0.0",
@@ -41,7 +50,8 @@
     "minami": "^1.1.1",
     "mocha": "^7.0.0",
     "nyc": "^15.0.0",
-    "sinon": "^9.0.2"
+    "sinon": "^9.0.2",
+    "typescript": "^3.9.3"
   },
   "engines": {
     "node": ">=10.13.0"