diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 90ad7fc..ee3ee5d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,10 +9,10 @@ jobs:
 
         steps:
             - uses: actions/checkout@v2
-            - name: Use Node.js 12
+            - name: Use Node.js 16
               uses: actions/setup-node@v1
               with:
-                  node-version: 12
+                  node-version: 16
             - run: npm ci
             - run: npm run lint
 
@@ -22,9 +22,9 @@ jobs:
 
         steps:
             - uses: actions/checkout@v2
-            - name: Use Node.js 12
+            - name: Use Node.js 16
               uses: actions/setup-node@v1
               with:
-                  node-version: 12
+                  node-version: 16
             - run: npm ci
             - run: npm test
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index d4f55c0..7536a34 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -11,10 +11,10 @@ jobs:
 
         steps:
             - uses: actions/checkout@v2
-            - name: Use Node.js 12.13.1
+            - name: Use Node.js 16
               uses: actions/setup-node@v1
               with:
-                  node-version: 12.13.1
+                  node-version: 16
                   registry-url: 'https://registry.npmjs.org'
             - run: npm ci
             - run: npm test
diff --git a/.gitignore b/.gitignore
index 105410e..041b062 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@ node_modules
 .vscode
 *.log
 *.js
+test/testproject/*.lua
diff --git a/core/index-5.0.d.ts b/core/index-5.0.d.ts
index 4ffe7c8..0cc083b 100644
--- a/core/index-5.0.d.ts
+++ b/core/index-5.0.d.ts
@@ -1,4 +1,4 @@
-/// <reference types="typescript-to-lua/language-extensions" />
+/// <reference types="@typescript-to-lua/language-extensions" />
 
 /// <reference path="./coroutine.d.ts" />
 /// <reference path="./5.0/debug.d.ts" />
diff --git a/core/index.d.ts b/core/index.d.ts
index 6d73c6a..96d49da 100644
--- a/core/index.d.ts
+++ b/core/index.d.ts
@@ -1,4 +1,4 @@
-/// <reference types="typescript-to-lua/language-extensions" />
+/// <reference types="@typescript-to-lua/language-extensions" />
 
 /// <reference path="./coroutine.d.ts" />
 /// <reference path="./debug.d.ts" />
diff --git a/package-lock.json b/package-lock.json
index 2f1027f..bd22adc 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,19 +5,19 @@
     "requires": true,
     "packages": {
         "": {
+            "name": "lua-types",
             "version": "2.12.2",
             "license": "MIT",
             "devDependencies": {
                 "@types/jest": "^26.0.20",
                 "@types/node": "^14.14.34",
+                "@typescript-to-lua/language-extensions": "^1.0.0",
                 "jest": "^26.6.3",
                 "jest-circus": "^26.6.3",
                 "prettier": "^2.0.5",
                 "ts-jest": "^26.5.3",
-                "typescript-to-lua": "^1.0.1"
-            },
-            "peerDependencies": {
-                "typescript-to-lua": "^1.0.0"
+                "typescript": "4.7.3",
+                "typescript-to-lua": "^1.9.0"
             }
         },
         "node_modules/@babel/code-frame": {
@@ -952,6 +952,12 @@
             "integrity": "sha512-37RSHht+gzzgYeobbG+KWryeAW8J33Nhr69cjTqSYymXVZEN9NbRYWoYlRtDhHKPVT1FyNKwaTPC1NynKZpzRA==",
             "dev": true
         },
+        "node_modules/@typescript-to-lua/language-extensions": {
+            "version": "1.0.0",
+            "resolved": "https://registry.npmjs.org/@typescript-to-lua/language-extensions/-/language-extensions-1.0.0.tgz",
+            "integrity": "sha512-GtmhFqyg+txpGgGLM3mlS3R6AEG9MQhKALxxcbr6SBzg9u7YAXcPKqUBaBYd6nH+Pi/eQLcWz4BNOLhz8v4TjQ==",
+            "dev": true
+        },
         "node_modules/abab": {
             "version": "2.0.5",
             "resolved": "https://registry.npmjs.org/abab/-/abab-2.0.5.tgz",
@@ -1033,9 +1039,9 @@
             }
         },
         "node_modules/ansi-regex": {
-            "version": "5.0.0",
-            "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.0.tgz",
-            "integrity": "sha512-bY6fj56OUQ0hU1KjFNDQuJFezqKdrAyFdIevADiqrWHwSlbmBNMHp5ak2f40Pm8JTFyM2mqxkG6ngkHO11f/lg==",
+            "version": "5.0.1",
+            "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
+            "integrity": "sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==",
             "dev": true,
             "engines": {
                 "node": ">=8"
@@ -1933,9 +1939,9 @@
             }
         },
         "node_modules/enhanced-resolve": {
-            "version": "5.8.2",
-            "resolved": "https://registry.npmjs.org/enhanced-resolve/-/enhanced-resolve-5.8.2.tgz",
-            "integrity": "sha512-F27oB3WuHDzvR2DOGNTaYy0D5o0cnrv8TeI482VM4kYgQd/FT9lUQwuNsJ0oOHtBUq7eiW5ytqzp7nBFknL+GA==",
+            "version": "5.10.0",
+            "resolved": "https://registry.npmjs.org/enhanced-resolve/-/enhanced-resolve-5.10.0.tgz",
+            "integrity": "sha512-T0yTFjdpldGY8PmuXXR0PyQ1ufZpEGiHVrp7zHKB7jdR4qlmZHhONVM5AQOAWXuF/w3dnHbEQVrNptJgt7F+cQ==",
             "dev": true,
             "dependencies": {
                 "graceful-fs": "^4.2.4",
@@ -3708,9 +3714,9 @@
             "dev": true
         },
         "node_modules/json-schema": {
-            "version": "0.2.3",
-            "resolved": "https://registry.npmjs.org/json-schema/-/json-schema-0.2.3.tgz",
-            "integrity": "sha1-tIDIkuWaLwWVTOcnvT8qTogvnhM=",
+            "version": "0.4.0",
+            "resolved": "https://registry.npmjs.org/json-schema/-/json-schema-0.4.0.tgz",
+            "integrity": "sha512-es94M3nTIfsEPisRafak+HDLfHXnKBhV3vU5eqPcS3flIWqcxJWgXHXiey3YrpaNsanY5ei1VoYEbOzijuq9BA==",
             "dev": true
         },
         "node_modules/json-schema-traverse": {
@@ -3741,18 +3747,18 @@
             }
         },
         "node_modules/jsprim": {
-            "version": "1.4.1",
-            "resolved": "https://registry.npmjs.org/jsprim/-/jsprim-1.4.1.tgz",
-            "integrity": "sha1-MT5mvB5cwG5Di8G3SZwuXFastqI=",
+            "version": "1.4.2",
+            "resolved": "https://registry.npmjs.org/jsprim/-/jsprim-1.4.2.tgz",
+            "integrity": "sha512-P2bSOMAc/ciLz6DzgjVlGJP9+BrJWu5UDGK70C2iweC5QBIeFf0ZXRvGjEj2uYgrY2MkAAhsSWHDWlFtEroZWw==",
             "dev": true,
-            "engines": [
-                "node >=0.6.0"
-            ],
             "dependencies": {
                 "assert-plus": "1.0.0",
                 "extsprintf": "1.3.0",
-                "json-schema": "0.2.3",
+                "json-schema": "0.4.0",
                 "verror": "1.10.0"
+            },
+            "engines": {
+                "node": ">=0.6.0"
             }
         },
         "node_modules/kind-of": {
@@ -3950,9 +3956,9 @@
             }
         },
         "node_modules/minimist": {
-            "version": "1.2.5",
-            "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz",
-            "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==",
+            "version": "1.2.6",
+            "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.6.tgz",
+            "integrity": "sha512-Jsjnk4bw3YJqYzbdyBiNsPWHPfO++UGG749Cxs6peCu5Xg4nrena6OVxOYxrQTqww0Jmwt+Ref8rggumkTLz9Q==",
             "dev": true
         },
         "node_modules/mixin-deep": {
@@ -5823,9 +5829,9 @@
             "dev": true
         },
         "node_modules/tmpl": {
-            "version": "1.0.4",
-            "resolved": "https://registry.npmjs.org/tmpl/-/tmpl-1.0.4.tgz",
-            "integrity": "sha1-I2QN17QtAEM5ERQIIOXPRA5SHdE=",
+            "version": "1.0.5",
+            "resolved": "https://registry.npmjs.org/tmpl/-/tmpl-1.0.5.tgz",
+            "integrity": "sha512-3f0uOEAQwIqGuWW2MVzYg8fV/QNnc/IpuJNG837rLuczAaLVHslWHZQj4IGiEl5Hs3kkbhwL9Ab7Hrsmuj+Smw==",
             "dev": true
         },
         "node_modules/to-fast-properties": {
@@ -6018,9 +6024,9 @@
             }
         },
         "node_modules/typescript": {
-            "version": "4.3.5",
-            "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.3.5.tgz",
-            "integrity": "sha512-DqQgihaQ9cUrskJo9kIyW/+g0Vxsk8cDtZ52a3NGh0YNTfpUSArXSohyUGnvbPazEPLu398C0UxmKSOrPumUzA==",
+            "version": "4.7.3",
+            "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.7.3.tgz",
+            "integrity": "sha512-WOkT3XYvrpXx4vMMqlD+8R8R37fZkjyLGlxavMc4iB8lrl8L0DeTcHbYgw/v0N/z9wAFsgBhcsF0ruoySS22mA==",
             "dev": true,
             "bin": {
                 "tsc": "bin/tsc",
@@ -6031,22 +6037,23 @@
             }
         },
         "node_modules/typescript-to-lua": {
-            "version": "1.0.1",
-            "resolved": "https://registry.npmjs.org/typescript-to-lua/-/typescript-to-lua-1.0.1.tgz",
-            "integrity": "sha512-j5mb+8HgUUY8hhAKoNy6KUMeamEN1fsTtMvSbPaxmVkWw40pHdLi3umsQG+Qo7wM6IK+RQffFxbIWEjleF+xpw==",
+            "version": "1.9.0",
+            "resolved": "https://registry.npmjs.org/typescript-to-lua/-/typescript-to-lua-1.9.0.tgz",
+            "integrity": "sha512-Oj8kutP1u/TSjN9oGUuESfOL+feHMSs7CCxl90C60jWTH+4ZXLtrXlRJTalA3Z2/aHjQXXgPaXQStSXBzAYLow==",
             "dev": true,
-            "license": "MIT",
             "dependencies": {
                 "enhanced-resolve": "^5.8.2",
                 "resolve": "^1.15.1",
-                "source-map": "^0.7.3",
-                "typescript": "~4.3.5"
+                "source-map": "^0.7.3"
             },
             "bin": {
                 "tstl": "dist/tstl.js"
             },
             "engines": {
                 "node": ">=12.13.0"
+            },
+            "peerDependencies": {
+                "typescript": "~4.7.3"
             }
         },
         "node_modules/union-value": {
@@ -7239,6 +7246,12 @@
             "integrity": "sha512-37RSHht+gzzgYeobbG+KWryeAW8J33Nhr69cjTqSYymXVZEN9NbRYWoYlRtDhHKPVT1FyNKwaTPC1NynKZpzRA==",
             "dev": true
         },
+        "@typescript-to-lua/language-extensions": {
+            "version": "1.0.0",
+            "resolved": "https://registry.npmjs.org/@typescript-to-lua/language-extensions/-/language-extensions-1.0.0.tgz",
+            "integrity": "sha512-GtmhFqyg+txpGgGLM3mlS3R6AEG9MQhKALxxcbr6SBzg9u7YAXcPKqUBaBYd6nH+Pi/eQLcWz4BNOLhz8v4TjQ==",
+            "dev": true
+        },
         "abab": {
             "version": "2.0.5",
             "resolved": "https://registry.npmjs.org/abab/-/abab-2.0.5.tgz",
@@ -7297,9 +7310,9 @@
             }
         },
         "ansi-regex": {
-            "version": "5.0.0",
-            "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.0.tgz",
-            "integrity": "sha512-bY6fj56OUQ0hU1KjFNDQuJFezqKdrAyFdIevADiqrWHwSlbmBNMHp5ak2f40Pm8JTFyM2mqxkG6ngkHO11f/lg==",
+            "version": "5.0.1",
+            "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
+            "integrity": "sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==",
             "dev": true
         },
         "ansi-styles": {
@@ -8009,9 +8022,9 @@
             }
         },
         "enhanced-resolve": {
-            "version": "5.8.2",
-            "resolved": "https://registry.npmjs.org/enhanced-resolve/-/enhanced-resolve-5.8.2.tgz",
-            "integrity": "sha512-F27oB3WuHDzvR2DOGNTaYy0D5o0cnrv8TeI482VM4kYgQd/FT9lUQwuNsJ0oOHtBUq7eiW5ytqzp7nBFknL+GA==",
+            "version": "5.10.0",
+            "resolved": "https://registry.npmjs.org/enhanced-resolve/-/enhanced-resolve-5.10.0.tgz",
+            "integrity": "sha512-T0yTFjdpldGY8PmuXXR0PyQ1ufZpEGiHVrp7zHKB7jdR4qlmZHhONVM5AQOAWXuF/w3dnHbEQVrNptJgt7F+cQ==",
             "dev": true,
             "requires": {
                 "graceful-fs": "^4.2.4",
@@ -9394,9 +9407,9 @@
             "dev": true
         },
         "json-schema": {
-            "version": "0.2.3",
-            "resolved": "https://registry.npmjs.org/json-schema/-/json-schema-0.2.3.tgz",
-            "integrity": "sha1-tIDIkuWaLwWVTOcnvT8qTogvnhM=",
+            "version": "0.4.0",
+            "resolved": "https://registry.npmjs.org/json-schema/-/json-schema-0.4.0.tgz",
+            "integrity": "sha512-es94M3nTIfsEPisRafak+HDLfHXnKBhV3vU5eqPcS3flIWqcxJWgXHXiey3YrpaNsanY5ei1VoYEbOzijuq9BA==",
             "dev": true
         },
         "json-schema-traverse": {
@@ -9421,14 +9434,14 @@
             }
         },
         "jsprim": {
-            "version": "1.4.1",
-            "resolved": "https://registry.npmjs.org/jsprim/-/jsprim-1.4.1.tgz",
-            "integrity": "sha1-MT5mvB5cwG5Di8G3SZwuXFastqI=",
+            "version": "1.4.2",
+            "resolved": "https://registry.npmjs.org/jsprim/-/jsprim-1.4.2.tgz",
+            "integrity": "sha512-P2bSOMAc/ciLz6DzgjVlGJP9+BrJWu5UDGK70C2iweC5QBIeFf0ZXRvGjEj2uYgrY2MkAAhsSWHDWlFtEroZWw==",
             "dev": true,
             "requires": {
                 "assert-plus": "1.0.0",
                 "extsprintf": "1.3.0",
-                "json-schema": "0.2.3",
+                "json-schema": "0.4.0",
                 "verror": "1.10.0"
             }
         },
@@ -9582,9 +9595,9 @@
             }
         },
         "minimist": {
-            "version": "1.2.5",
-            "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz",
-            "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==",
+            "version": "1.2.6",
+            "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.6.tgz",
+            "integrity": "sha512-Jsjnk4bw3YJqYzbdyBiNsPWHPfO++UGG749Cxs6peCu5Xg4nrena6OVxOYxrQTqww0Jmwt+Ref8rggumkTLz9Q==",
             "dev": true
         },
         "mixin-deep": {
@@ -11062,9 +11075,9 @@
             "dev": true
         },
         "tmpl": {
-            "version": "1.0.4",
-            "resolved": "https://registry.npmjs.org/tmpl/-/tmpl-1.0.4.tgz",
-            "integrity": "sha1-I2QN17QtAEM5ERQIIOXPRA5SHdE=",
+            "version": "1.0.5",
+            "resolved": "https://registry.npmjs.org/tmpl/-/tmpl-1.0.5.tgz",
+            "integrity": "sha512-3f0uOEAQwIqGuWW2MVzYg8fV/QNnc/IpuJNG837rLuczAaLVHslWHZQj4IGiEl5Hs3kkbhwL9Ab7Hrsmuj+Smw==",
             "dev": true
         },
         "to-fast-properties": {
@@ -11209,21 +11222,20 @@
             }
         },
         "typescript": {
-            "version": "4.3.5",
-            "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.3.5.tgz",
-            "integrity": "sha512-DqQgihaQ9cUrskJo9kIyW/+g0Vxsk8cDtZ52a3NGh0YNTfpUSArXSohyUGnvbPazEPLu398C0UxmKSOrPumUzA==",
+            "version": "4.7.3",
+            "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.7.3.tgz",
+            "integrity": "sha512-WOkT3XYvrpXx4vMMqlD+8R8R37fZkjyLGlxavMc4iB8lrl8L0DeTcHbYgw/v0N/z9wAFsgBhcsF0ruoySS22mA==",
             "dev": true
         },
         "typescript-to-lua": {
-            "version": "1.0.1",
-            "resolved": "https://registry.npmjs.org/typescript-to-lua/-/typescript-to-lua-1.0.1.tgz",
-            "integrity": "sha512-j5mb+8HgUUY8hhAKoNy6KUMeamEN1fsTtMvSbPaxmVkWw40pHdLi3umsQG+Qo7wM6IK+RQffFxbIWEjleF+xpw==",
+            "version": "1.9.0",
+            "resolved": "https://registry.npmjs.org/typescript-to-lua/-/typescript-to-lua-1.9.0.tgz",
+            "integrity": "sha512-Oj8kutP1u/TSjN9oGUuESfOL+feHMSs7CCxl90C60jWTH+4ZXLtrXlRJTalA3Z2/aHjQXXgPaXQStSXBzAYLow==",
             "dev": true,
             "requires": {
                 "enhanced-resolve": "^5.8.2",
                 "resolve": "^1.15.1",
-                "source-map": "^0.7.3",
-                "typescript": "~4.3.5"
+                "source-map": "^0.7.3"
             }
         },
         "union-value": {
diff --git a/package.json b/package.json
index 2f12c8d..75ef0da 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,8 @@
         "**/*.d.ts"
     ],
     "scripts": {
-        "test": "jest",
+        "test": "jest && npm run test:test-project",
+        "test:test-project": "npm --prefix test/testproject ci && npm --prefix test/testproject run build",
         "lint": "prettier --check ."
     },
     "prettier": {
@@ -23,9 +24,6 @@
         "proseWrap": "never",
         "singleQuote": true
     },
-    "peerDependencies": {
-        "typescript-to-lua": "^1.0.0"
-    },
     "devDependencies": {
         "@types/jest": "^26.0.20",
         "@types/node": "^14.14.34",
@@ -33,6 +31,11 @@
         "jest-circus": "^26.6.3",
         "prettier": "^2.0.5",
         "ts-jest": "^26.5.3",
-        "typescript-to-lua": "^1.0.1"
+        "typescript": "4.7.3",
+        "typescript-to-lua": "^1.9.0",
+        "@typescript-to-lua/language-extensions": "^1.0.0"
+    },
+    "peer-dependencies": {
+        "@typescript-to-lua/language-extensions": "^1.0.0"
     }
 }
diff --git a/test/__snapshots__/global.spec.ts.snap b/test/__snapshots__/global.spec.ts.snap
index a20d2fa..bbfe81b 100644
--- a/test/__snapshots__/global.spec.ts.snap
+++ b/test/__snapshots__/global.spec.ts.snap
@@ -71,11 +71,7 @@ exports[`Lua version 5.1 / global pcall with context 1`] = `
 
 exports[`Lua version 5.1 / global rawget 1`] = `"value = rawget({foo = \\"bar\\"}, \\"foo\\")"`;
 
-exports[`Lua version 5.1 / global select 1`] = `
-"values = {
-    select(2, \\"a\\", \\"b\\", \\"c\\")
-}"
-`;
+exports[`Lua version 5.1 / global select 1`] = `"values = {select(2, \\"a\\", \\"b\\", \\"c\\")}"`;
 
 exports[`Lua version 5.1 / global select destructured 1`] = `"b, c = select(2, \\"a\\", \\"b\\", \\"c\\")"`;
 
@@ -84,9 +80,7 @@ exports[`Lua version 5.1 / global select with # 1`] = `"count = select(\\"#\\",
 exports[`Lua version 5.1 / global setmetatable with function index 1`] = `
 "tbl = setmetatable(
     {},
-    {
-        __index = function(____, key) return key .. \\"bar\\" end
-    }
+    {__index = function(____, key) return key .. \\"bar\\" end}
 )
 takesStr = function(____, s)
 end
@@ -181,11 +175,7 @@ exports[`Lua version 5.2 / global pcall with context 1`] = `
 
 exports[`Lua version 5.2 / global rawget 1`] = `"value = rawget({foo = \\"bar\\"}, \\"foo\\")"`;
 
-exports[`Lua version 5.2 / global select 1`] = `
-"values = {
-    select(2, \\"a\\", \\"b\\", \\"c\\")
-}"
-`;
+exports[`Lua version 5.2 / global select 1`] = `"values = {select(2, \\"a\\", \\"b\\", \\"c\\")}"`;
 
 exports[`Lua version 5.2 / global select destructured 1`] = `"b, c = select(2, \\"a\\", \\"b\\", \\"c\\")"`;
 
@@ -194,9 +184,7 @@ exports[`Lua version 5.2 / global select with # 1`] = `"count = select(\\"#\\",
 exports[`Lua version 5.2 / global setmetatable with function index 1`] = `
 "tbl = setmetatable(
     {},
-    {
-        __index = function(____, key) return key .. \\"bar\\" end
-    }
+    {__index = function(____, key) return key .. \\"bar\\" end}
 )
 takesStr = function(____, s)
 end
@@ -291,11 +279,7 @@ exports[`Lua version 5.3 / global pcall with context 1`] = `
 
 exports[`Lua version 5.3 / global rawget 1`] = `"value = rawget({foo = \\"bar\\"}, \\"foo\\")"`;
 
-exports[`Lua version 5.3 / global select 1`] = `
-"values = {
-    select(2, \\"a\\", \\"b\\", \\"c\\")
-}"
-`;
+exports[`Lua version 5.3 / global select 1`] = `"values = {select(2, \\"a\\", \\"b\\", \\"c\\")}"`;
 
 exports[`Lua version 5.3 / global select destructured 1`] = `"b, c = select(2, \\"a\\", \\"b\\", \\"c\\")"`;
 
@@ -304,9 +288,7 @@ exports[`Lua version 5.3 / global select with # 1`] = `"count = select(\\"#\\",
 exports[`Lua version 5.3 / global setmetatable with function index 1`] = `
 "tbl = setmetatable(
     {},
-    {
-        __index = function(____, key) return key .. \\"bar\\" end
-    }
+    {__index = function(____, key) return key .. \\"bar\\" end}
 )
 takesStr = function(____, s)
 end
@@ -401,11 +383,7 @@ exports[`Lua version 5.4 / global pcall with context 1`] = `
 
 exports[`Lua version 5.4 / global rawget 1`] = `"value = rawget({foo = \\"bar\\"}, \\"foo\\")"`;
 
-exports[`Lua version 5.4 / global select 1`] = `
-"values = {
-    select(2, \\"a\\", \\"b\\", \\"c\\")
-}"
-`;
+exports[`Lua version 5.4 / global select 1`] = `"values = {select(2, \\"a\\", \\"b\\", \\"c\\")}"`;
 
 exports[`Lua version 5.4 / global select destructured 1`] = `"b, c = select(2, \\"a\\", \\"b\\", \\"c\\")"`;
 
@@ -414,9 +392,7 @@ exports[`Lua version 5.4 / global select with # 1`] = `"count = select(\\"#\\",
 exports[`Lua version 5.4 / global setmetatable with function index 1`] = `
 "tbl = setmetatable(
     {},
-    {
-        __index = function(____, key) return key .. \\"bar\\" end
-    }
+    {__index = function(____, key) return key .. \\"bar\\" end}
 )
 takesStr = function(____, s)
 end
@@ -511,11 +487,7 @@ exports[`Lua version JIT / global pcall with context 1`] = `
 
 exports[`Lua version JIT / global rawget 1`] = `"value = rawget({foo = \\"bar\\"}, \\"foo\\")"`;
 
-exports[`Lua version JIT / global select 1`] = `
-"values = {
-    select(2, \\"a\\", \\"b\\", \\"c\\")
-}"
-`;
+exports[`Lua version JIT / global select 1`] = `"values = {select(2, \\"a\\", \\"b\\", \\"c\\")}"`;
 
 exports[`Lua version JIT / global select destructured 1`] = `"b, c = select(2, \\"a\\", \\"b\\", \\"c\\")"`;
 
@@ -524,9 +496,7 @@ exports[`Lua version JIT / global select with # 1`] = `"count = select(\\"#\\",
 exports[`Lua version JIT / global setmetatable with function index 1`] = `
 "tbl = setmetatable(
     {},
-    {
-        __index = function(____, key) return key .. \\"bar\\" end
-    }
+    {__index = function(____, key) return key .. \\"bar\\" end}
 )
 takesStr = function(____, s)
 end
diff --git a/test/__snapshots__/io.spec.ts.snap b/test/__snapshots__/io.spec.ts.snap
index e44aaf4..7d8f79b 100644
--- a/test/__snapshots__/io.spec.ts.snap
+++ b/test/__snapshots__/io.spec.ts.snap
@@ -98,11 +98,7 @@ exports[`Lua version 5.1 / io stdout 1`] = `"io.stdout:write(\\"foobar\\")"`;
 
 exports[`Lua version 5.1 / io tmpfile 1`] = `"file = io.tmpfile()"`;
 
-exports[`Lua version 5.1 / io type 1`] = `
-"print(
-    io.type(file)
-)"
-`;
+exports[`Lua version 5.1 / io type 1`] = `"print(io.type(file))"`;
 
 exports[`Lua version 5.1 / io write 1`] = `"f, err = io.write(\\"foobar\\")"`;
 
@@ -204,11 +200,7 @@ exports[`Lua version 5.2 / io stdout 1`] = `"io.stdout:write(\\"foobar\\")"`;
 
 exports[`Lua version 5.2 / io tmpfile 1`] = `"file = io.tmpfile()"`;
 
-exports[`Lua version 5.2 / io type 1`] = `
-"print(
-    io.type(file)
-)"
-`;
+exports[`Lua version 5.2 / io type 1`] = `"print(io.type(file))"`;
 
 exports[`Lua version 5.2 / io write 1`] = `"f, err = io.write(\\"foobar\\")"`;
 
@@ -310,11 +302,7 @@ exports[`Lua version 5.3 / io stdout 1`] = `"io.stdout:write(\\"foobar\\")"`;
 
 exports[`Lua version 5.3 / io tmpfile 1`] = `"file = io.tmpfile()"`;
 
-exports[`Lua version 5.3 / io type 1`] = `
-"print(
-    io.type(file)
-)"
-`;
+exports[`Lua version 5.3 / io type 1`] = `"print(io.type(file))"`;
 
 exports[`Lua version 5.3 / io write 1`] = `"f, err = io.write(\\"foobar\\")"`;
 
@@ -416,11 +404,7 @@ exports[`Lua version 5.4 / io stdout 1`] = `"io.stdout:write(\\"foobar\\")"`;
 
 exports[`Lua version 5.4 / io tmpfile 1`] = `"file = io.tmpfile()"`;
 
-exports[`Lua version 5.4 / io type 1`] = `
-"print(
-    io.type(file)
-)"
-`;
+exports[`Lua version 5.4 / io type 1`] = `"print(io.type(file))"`;
 
 exports[`Lua version 5.4 / io write 1`] = `"f, err = io.write(\\"foobar\\")"`;
 
@@ -522,10 +506,6 @@ exports[`Lua version JIT / io stdout 1`] = `"io.stdout:write(\\"foobar\\")"`;
 
 exports[`Lua version JIT / io tmpfile 1`] = `"file = io.tmpfile()"`;
 
-exports[`Lua version JIT / io type 1`] = `
-"print(
-    io.type(file)
-)"
-`;
+exports[`Lua version JIT / io type 1`] = `"print(io.type(file))"`;
 
 exports[`Lua version JIT / io write 1`] = `"f, err = io.write(\\"foobar\\")"`;
diff --git a/test/__snapshots__/string.spec.ts.snap b/test/__snapshots__/string.spec.ts.snap
index 38517fc..0bc6d11 100644
--- a/test/__snapshots__/string.spec.ts.snap
+++ b/test/__snapshots__/string.spec.ts.snap
@@ -6,17 +6,9 @@ exports[`Lua version 5.1 / string string.byte multiple 1`] = `"a, b, c, d = stri
 
 exports[`Lua version 5.1 / string string.char 1`] = `"str = string.char(64, 65, 66)"`;
 
-exports[`Lua version 5.1 / string string.dump 1`] = `
-"str = string.dump(
-    function() return 5 end
-)"
-`;
+exports[`Lua version 5.1 / string string.dump 1`] = `"str = string.dump(function() return 5 end)"`;
 
-exports[`Lua version 5.1 / string string.find 1`] = `
-"result = {
-    string.find(\\"abc\\", \\"b\\")
-}"
-`;
+exports[`Lua version 5.1 / string string.find 1`] = `"result = {string.find(\\"abc\\", \\"b\\")}"`;
 
 exports[`Lua version 5.1 / string string.find destructure 1`] = `"start, ____end, matchString = string.find(\\"abc\\", \\"b\\")"`;
 
@@ -39,34 +31,20 @@ end"
 `;
 
 exports[`Lua version 5.1 / string string.gsub function 1`] = `
-"result = {
-    string.gsub(
-        \\"hello world\\",
-        \\"l\\",
-        function(match) return \\"R\\" end
-    )
-}"
+"result = {string.gsub(
+    \\"hello world\\",
+    \\"l\\",
+    function(match) return \\"R\\" end
+)}"
 `;
 
-exports[`Lua version 5.1 / string string.gsub string 1`] = `
-"result = {
-    string.gsub(\\"hello world\\", \\"l\\", \\"R\\")
-}"
-`;
+exports[`Lua version 5.1 / string string.gsub string 1`] = `"result = {string.gsub(\\"hello world\\", \\"l\\", \\"R\\")}"`;
 
 exports[`Lua version 5.1 / string string.gsub string destructured 1`] = `"result, numOccurrences = string.gsub(\\"hello world\\", \\"l\\", \\"R\\")"`;
 
-exports[`Lua version 5.1 / string string.gsub table 1`] = `
-"result = {
-    string.gsub(\\"hello world\\", \\"l\\", {l = \\"R\\"})
-}"
-`;
+exports[`Lua version 5.1 / string string.gsub table 1`] = `"result = {string.gsub(\\"hello world\\", \\"l\\", {l = \\"R\\"})}"`;
 
-exports[`Lua version 5.1 / string string.match 1`] = `
-"result = {
-    string.match(\\"hello world\\", \\"l\\")
-}"
-`;
+exports[`Lua version 5.1 / string string.match 1`] = `"result = {string.match(\\"hello world\\", \\"l\\")}"`;
 
 exports[`Lua version 5.1 / string string.match destructured 1`] = `"match1, match2 = string.match(\\"hello world\\", \\"l\\")"`;
 
@@ -78,17 +56,9 @@ exports[`Lua version 5.2 / string string.byte multiple 1`] = `"a, b, c, d = stri
 
 exports[`Lua version 5.2 / string string.char 1`] = `"str = string.char(64, 65, 66)"`;
 
-exports[`Lua version 5.2 / string string.dump 1`] = `
-"str = string.dump(
-    function() return 5 end
-)"
-`;
+exports[`Lua version 5.2 / string string.dump 1`] = `"str = string.dump(function() return 5 end)"`;
 
-exports[`Lua version 5.2 / string string.find 1`] = `
-"result = {
-    string.find(\\"abc\\", \\"b\\")
-}"
-`;
+exports[`Lua version 5.2 / string string.find 1`] = `"result = {string.find(\\"abc\\", \\"b\\")}"`;
 
 exports[`Lua version 5.2 / string string.find destructure 1`] = `"start, ____end, matchString = string.find(\\"abc\\", \\"b\\")"`;
 
@@ -111,34 +81,20 @@ end"
 `;
 
 exports[`Lua version 5.2 / string string.gsub function 1`] = `
-"result = {
-    string.gsub(
-        \\"hello world\\",
-        \\"l\\",
-        function(match) return \\"R\\" end
-    )
-}"
+"result = {string.gsub(
+    \\"hello world\\",
+    \\"l\\",
+    function(match) return \\"R\\" end
+)}"
 `;
 
-exports[`Lua version 5.2 / string string.gsub string 1`] = `
-"result = {
-    string.gsub(\\"hello world\\", \\"l\\", \\"R\\")
-}"
-`;
+exports[`Lua version 5.2 / string string.gsub string 1`] = `"result = {string.gsub(\\"hello world\\", \\"l\\", \\"R\\")}"`;
 
 exports[`Lua version 5.2 / string string.gsub string destructured 1`] = `"result, numOccurrences = string.gsub(\\"hello world\\", \\"l\\", \\"R\\")"`;
 
-exports[`Lua version 5.2 / string string.gsub table 1`] = `
-"result = {
-    string.gsub(\\"hello world\\", \\"l\\", {l = \\"R\\"})
-}"
-`;
+exports[`Lua version 5.2 / string string.gsub table 1`] = `"result = {string.gsub(\\"hello world\\", \\"l\\", {l = \\"R\\"})}"`;
 
-exports[`Lua version 5.2 / string string.match 1`] = `
-"result = {
-    string.match(\\"hello world\\", \\"l\\")
-}"
-`;
+exports[`Lua version 5.2 / string string.match 1`] = `"result = {string.match(\\"hello world\\", \\"l\\")}"`;
 
 exports[`Lua version 5.2 / string string.match destructured 1`] = `"match1, match2 = string.match(\\"hello world\\", \\"l\\")"`;
 
@@ -150,17 +106,9 @@ exports[`Lua version 5.3 / string string.byte multiple 1`] = `"a, b, c, d = stri
 
 exports[`Lua version 5.3 / string string.char 1`] = `"str = string.char(64, 65, 66)"`;
 
-exports[`Lua version 5.3 / string string.dump 1`] = `
-"str = string.dump(
-    function() return 5 end
-)"
-`;
+exports[`Lua version 5.3 / string string.dump 1`] = `"str = string.dump(function() return 5 end)"`;
 
-exports[`Lua version 5.3 / string string.find 1`] = `
-"result = {
-    string.find(\\"abc\\", \\"b\\")
-}"
-`;
+exports[`Lua version 5.3 / string string.find 1`] = `"result = {string.find(\\"abc\\", \\"b\\")}"`;
 
 exports[`Lua version 5.3 / string string.find destructure 1`] = `"start, ____end, matchString = string.find(\\"abc\\", \\"b\\")"`;
 
@@ -183,34 +131,20 @@ end"
 `;
 
 exports[`Lua version 5.3 / string string.gsub function 1`] = `
-"result = {
-    string.gsub(
-        \\"hello world\\",
-        \\"l\\",
-        function(match) return \\"R\\" end
-    )
-}"
+"result = {string.gsub(
+    \\"hello world\\",
+    \\"l\\",
+    function(match) return \\"R\\" end
+)}"
 `;
 
-exports[`Lua version 5.3 / string string.gsub string 1`] = `
-"result = {
-    string.gsub(\\"hello world\\", \\"l\\", \\"R\\")
-}"
-`;
+exports[`Lua version 5.3 / string string.gsub string 1`] = `"result = {string.gsub(\\"hello world\\", \\"l\\", \\"R\\")}"`;
 
 exports[`Lua version 5.3 / string string.gsub string destructured 1`] = `"result, numOccurrences = string.gsub(\\"hello world\\", \\"l\\", \\"R\\")"`;
 
-exports[`Lua version 5.3 / string string.gsub table 1`] = `
-"result = {
-    string.gsub(\\"hello world\\", \\"l\\", {l = \\"R\\"})
-}"
-`;
+exports[`Lua version 5.3 / string string.gsub table 1`] = `"result = {string.gsub(\\"hello world\\", \\"l\\", {l = \\"R\\"})}"`;
 
-exports[`Lua version 5.3 / string string.match 1`] = `
-"result = {
-    string.match(\\"hello world\\", \\"l\\")
-}"
-`;
+exports[`Lua version 5.3 / string string.match 1`] = `"result = {string.match(\\"hello world\\", \\"l\\")}"`;
 
 exports[`Lua version 5.3 / string string.match destructured 1`] = `"match1, match2 = string.match(\\"hello world\\", \\"l\\")"`;
 
@@ -222,17 +156,9 @@ exports[`Lua version 5.4 / string string.byte multiple 1`] = `"a, b, c, d = stri
 
 exports[`Lua version 5.4 / string string.char 1`] = `"str = string.char(64, 65, 66)"`;
 
-exports[`Lua version 5.4 / string string.dump 1`] = `
-"str = string.dump(
-    function() return 5 end
-)"
-`;
+exports[`Lua version 5.4 / string string.dump 1`] = `"str = string.dump(function() return 5 end)"`;
 
-exports[`Lua version 5.4 / string string.find 1`] = `
-"result = {
-    string.find(\\"abc\\", \\"b\\")
-}"
-`;
+exports[`Lua version 5.4 / string string.find 1`] = `"result = {string.find(\\"abc\\", \\"b\\")}"`;
 
 exports[`Lua version 5.4 / string string.find destructure 1`] = `"start, ____end, matchString = string.find(\\"abc\\", \\"b\\")"`;
 
@@ -255,34 +181,20 @@ end"
 `;
 
 exports[`Lua version 5.4 / string string.gsub function 1`] = `
-"result = {
-    string.gsub(
-        \\"hello world\\",
-        \\"l\\",
-        function(match) return \\"R\\" end
-    )
-}"
+"result = {string.gsub(
+    \\"hello world\\",
+    \\"l\\",
+    function(match) return \\"R\\" end
+)}"
 `;
 
-exports[`Lua version 5.4 / string string.gsub string 1`] = `
-"result = {
-    string.gsub(\\"hello world\\", \\"l\\", \\"R\\")
-}"
-`;
+exports[`Lua version 5.4 / string string.gsub string 1`] = `"result = {string.gsub(\\"hello world\\", \\"l\\", \\"R\\")}"`;
 
 exports[`Lua version 5.4 / string string.gsub string destructured 1`] = `"result, numOccurrences = string.gsub(\\"hello world\\", \\"l\\", \\"R\\")"`;
 
-exports[`Lua version 5.4 / string string.gsub table 1`] = `
-"result = {
-    string.gsub(\\"hello world\\", \\"l\\", {l = \\"R\\"})
-}"
-`;
+exports[`Lua version 5.4 / string string.gsub table 1`] = `"result = {string.gsub(\\"hello world\\", \\"l\\", {l = \\"R\\"})}"`;
 
-exports[`Lua version 5.4 / string string.match 1`] = `
-"result = {
-    string.match(\\"hello world\\", \\"l\\")
-}"
-`;
+exports[`Lua version 5.4 / string string.match 1`] = `"result = {string.match(\\"hello world\\", \\"l\\")}"`;
 
 exports[`Lua version 5.4 / string string.match destructured 1`] = `"match1, match2 = string.match(\\"hello world\\", \\"l\\")"`;
 
@@ -294,17 +206,9 @@ exports[`Lua version JIT / string string.byte multiple 1`] = `"a, b, c, d = stri
 
 exports[`Lua version JIT / string string.char 1`] = `"str = string.char(64, 65, 66)"`;
 
-exports[`Lua version JIT / string string.dump 1`] = `
-"str = string.dump(
-    function() return 5 end
-)"
-`;
+exports[`Lua version JIT / string string.dump 1`] = `"str = string.dump(function() return 5 end)"`;
 
-exports[`Lua version JIT / string string.find 1`] = `
-"result = {
-    string.find(\\"abc\\", \\"b\\")
-}"
-`;
+exports[`Lua version JIT / string string.find 1`] = `"result = {string.find(\\"abc\\", \\"b\\")}"`;
 
 exports[`Lua version JIT / string string.find destructure 1`] = `"start, ____end, matchString = string.find(\\"abc\\", \\"b\\")"`;
 
@@ -327,34 +231,20 @@ end"
 `;
 
 exports[`Lua version JIT / string string.gsub function 1`] = `
-"result = {
-    string.gsub(
-        \\"hello world\\",
-        \\"l\\",
-        function(match) return \\"R\\" end
-    )
-}"
+"result = {string.gsub(
+    \\"hello world\\",
+    \\"l\\",
+    function(match) return \\"R\\" end
+)}"
 `;
 
-exports[`Lua version JIT / string string.gsub string 1`] = `
-"result = {
-    string.gsub(\\"hello world\\", \\"l\\", \\"R\\")
-}"
-`;
+exports[`Lua version JIT / string string.gsub string 1`] = `"result = {string.gsub(\\"hello world\\", \\"l\\", \\"R\\")}"`;
 
 exports[`Lua version JIT / string string.gsub string destructured 1`] = `"result, numOccurrences = string.gsub(\\"hello world\\", \\"l\\", \\"R\\")"`;
 
-exports[`Lua version JIT / string string.gsub table 1`] = `
-"result = {
-    string.gsub(\\"hello world\\", \\"l\\", {l = \\"R\\"})
-}"
-`;
+exports[`Lua version JIT / string string.gsub table 1`] = `"result = {string.gsub(\\"hello world\\", \\"l\\", {l = \\"R\\"})}"`;
 
-exports[`Lua version JIT / string string.match 1`] = `
-"result = {
-    string.match(\\"hello world\\", \\"l\\")
-}"
-`;
+exports[`Lua version JIT / string string.match 1`] = `"result = {string.match(\\"hello world\\", \\"l\\")}"`;
 
 exports[`Lua version JIT / string string.match destructured 1`] = `"match1, match2 = string.match(\\"hello world\\", \\"l\\")"`;
 
diff --git a/test/test-utils.ts b/test/test-utils.ts
index c8b0437..cce9a3b 100644
--- a/test/test-utils.ts
+++ b/test/test-utils.ts
@@ -2,7 +2,7 @@ import * as fs from 'fs';
 import * as path from 'path';
 import * as ts from 'typescript';
 
-import { LuaTarget, Transpiler } from 'typescript-to-lua';
+import { LuaTarget, Transpiler, CompilerOptions } from 'typescript-to-lua';
 
 const targets = [
     LuaTarget.Lua51,
@@ -25,7 +25,7 @@ export function tstl(luaTarget: LuaTarget, input: string): string {
 
     // Create a TS program containing input.ts and the declarations file to test
     const rootNames = ['input.ts', typesPath];
-    const options = {
+    const options: CompilerOptions = {
         luaTarget,
         lib: ['lib.esnext.d.ts'],
         noHeader: true,
@@ -83,21 +83,28 @@ function getCompilerHostWithInput(input: string) {
 
             let filePath = fileName;
 
-            if (fileName.startsWith('lib.')) {
+            if (fileName.includes('/@typescript/')) {
                 const typeScriptDir = path.dirname(require.resolve('typescript'));
-                filePath = path.join(typeScriptDir, fileName);
+                const pathParts = fileName.split('@typescript/')[1].split('/');
+                let libFileName = pathParts.join('.').replace(/-/g, '.');
+                if (libFileName.endsWith('.ts') && !libFileName.endsWith('.d.ts')) {
+                    libFileName = libFileName.substring(0, libFileName.length - 3) + '.d.ts';
+                }
+                filePath = path.join(typeScriptDir, libFileName);
             }
 
-            if (fileName.endsWith('typescript-to-lua/language-extensions/index.d.ts')) {
+            if (fileName.endsWith('@typescript-to-lua/language-extensions/index.d.ts')) {
                 filePath = path.resolve(
                     __dirname,
-                    `../node_modules/typescript-to-lua/language-extensions/index.d.ts`
+                    `../node_modules/@typescript-to-lua/language-extensions/index.d.ts`
                 );
             }
 
-            const fileContent = fs.readFileSync(filePath).toString();
-            fileCache[fileName] = fileContent;
-            return ts.createSourceFile(fileName, fileContent, languageVersion);
+            if (fs.existsSync(filePath)) {
+                const fileContent = fs.readFileSync(filePath).toString();
+                fileCache[fileName] = fileContent;
+                return ts.createSourceFile(fileName, fileContent, languageVersion);
+            }
         },
     };
 }
diff --git a/test/testproject/main.ts b/test/testproject/main.ts
index 206d7fb..5d0d4f0 100644
--- a/test/testproject/main.ts
+++ b/test/testproject/main.ts
@@ -3,3 +3,7 @@ const mytable = new LuaMap<string, number>();
 
 for (const [k, v] of pairs(mytable)) {
 }
+
+function multiReturn(): LuaMultiReturn<[string, number, string]> {
+    return $multi('3', 5, '6');
+}
diff --git a/test/testproject/package-lock.json b/test/testproject/package-lock.json
index 8515a47..1473fbd 100644
--- a/test/testproject/package-lock.json
+++ b/test/testproject/package-lock.json
@@ -5,7 +5,23 @@
     "packages": {
         "": {
             "devDependencies": {
-                "typescript": "^4.8.2",
+                "lua-types": "file:../..",
+                "typescript": "~4.7.3",
+                "typescript-to-lua": "^1.9.0"
+            }
+        },
+        "../..": {
+            "version": "2.12.2",
+            "dev": true,
+            "license": "MIT",
+            "devDependencies": {
+                "@types/jest": "^26.0.20",
+                "@types/node": "^14.14.34",
+                "@typescript-to-lua/language-extensions": "^1.0.0",
+                "jest": "^26.6.3",
+                "jest-circus": "^26.6.3",
+                "prettier": "^2.0.5",
+                "ts-jest": "^26.5.3",
                 "typescript-to-lua": "^1.9.0"
             }
         },
@@ -58,6 +74,10 @@
                 "url": "https://github.com/sponsors/ljharb"
             }
         },
+        "node_modules/lua-types": {
+            "resolved": "../..",
+            "link": true
+        },
         "node_modules/path-parse": {
             "version": "1.0.7",
             "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.7.tgz",
@@ -112,9 +132,9 @@
             }
         },
         "node_modules/typescript": {
-            "version": "4.8.2",
-            "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.8.2.tgz",
-            "integrity": "sha512-C0I1UsrrDHo2fYI5oaCGbSejwX4ch+9Y5jTQELvovfmFkK3HHSZJB8MSJcWLmCUBzQBchCrZ9rMRV6GuNrvGtw==",
+            "version": "4.7.4",
+            "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.7.4.tgz",
+            "integrity": "sha512-C0WQT0gezHuw6AdY1M2jxUO83Rjf0HP7Sk1DtXj6j1EwkQNZrHAg2XPWlq62oqEhYvONq5pkC2Y9oPljWToLmQ==",
             "dev": true,
             "bin": {
                 "tsc": "bin/tsc",
@@ -186,6 +206,19 @@
                 "has": "^1.0.3"
             }
         },
+        "lua-types": {
+            "version": "file:../..",
+            "requires": {
+                "@types/jest": "^26.0.20",
+                "@types/node": "^14.14.34",
+                "@typescript-to-lua/language-extensions": "^1.0.0",
+                "jest": "^26.6.3",
+                "jest-circus": "^26.6.3",
+                "prettier": "^2.0.5",
+                "ts-jest": "^26.5.3",
+                "typescript-to-lua": "^1.9.0"
+            }
+        },
         "path-parse": {
             "version": "1.0.7",
             "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.7.tgz",
@@ -222,9 +255,9 @@
             "dev": true
         },
         "typescript": {
-            "version": "4.8.2",
-            "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.8.2.tgz",
-            "integrity": "sha512-C0I1UsrrDHo2fYI5oaCGbSejwX4ch+9Y5jTQELvovfmFkK3HHSZJB8MSJcWLmCUBzQBchCrZ9rMRV6GuNrvGtw==",
+            "version": "4.7.4",
+            "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.7.4.tgz",
+            "integrity": "sha512-C0WQT0gezHuw6AdY1M2jxUO83Rjf0HP7Sk1DtXj6j1EwkQNZrHAg2XPWlq62oqEhYvONq5pkC2Y9oPljWToLmQ==",
             "dev": true
         },
         "typescript-to-lua": {
diff --git a/test/testproject/package.json b/test/testproject/package.json
index ac28cc1..3df63a5 100644
--- a/test/testproject/package.json
+++ b/test/testproject/package.json
@@ -1,6 +1,10 @@
 {
+    "scripts": {
+        "build": "tstl"
+    },
     "devDependencies": {
-        "typescript": "~4.8.2",
-        "typescript-to-lua": "~1.9.0"
+        "lua-types": "file:../..",
+        "typescript": "~4.7.3",
+        "typescript-to-lua": "^1.9.0"
     }
 }
diff --git a/test/testproject/tsconfig.json b/test/testproject/tsconfig.json
index b24a6d2..406f546 100644
--- a/test/testproject/tsconfig.json
+++ b/test/testproject/tsconfig.json
@@ -2,6 +2,6 @@
     "compilerOptions": {
         "strict": true,
         "target": "esnext",
-        "types": ["typescript-to-lua/language-extensions"]
+        "types": ["@typescript-to-lua/language-extensions"]
     }
 }