feat: Add .cts to support typescript 4.7

index.js

@@ -8,6 +8,9 @@ function endsInJsx(filename) {
 function endsInTs(filename) {
   return filename.endsWith('.ts');
 }
+function endsInCts(filename) {
+  return filename.endsWith('.cts');
+}
 function endsInTsx(filename) {
   return filename.endsWith('.tsx');
 }
@@ -425,6 +428,32 @@ var extensions = {
       },
     },
   ],
+  '.cts': [
+    'ts-node/register',
+    {
+      module: '@swc/register',
+      register: function (hook, config) {
+        config = config || {
+          only: [endsInCts],
+          ignore: [isNodeModules],
+          jsc: {
+            parser: {
+              syntax: 'typescript',
+            },
+          },
+          module: {
+            type: 'commonjs',
+          },
+        };
+
+        hook(
+          Object.assign({}, config, {
+            extensions: '.cts',
+          })
+        );
+      },
+    },
+  ],
   '.tsx': [
     'ts-node/register',
     'sucrase/register/tsx',

test/fixtures/cts/0/package.json

@@ -0,0 +1,6 @@
+{
+  "dependencies": {
+    "ts-node": "^10.8.0",
+    "typescript": "^4.7.4"
+  }
+}

test/fixtures/cts/0/test.cts

@@ -0,0 +1,19 @@
+var test: {
+  data: {
+    trueKey: boolean;
+    falseKey: boolean;
+    subKey: {
+      subProp: number;
+    };
+  };
+} = {
+  data: {
+    trueKey: true,
+    falseKey: false,
+    subKey: {
+      subProp: 1,
+    },
+  },
+};
+
+export default test;

test/fixtures/cts/0/tsconfig.json

@@ -0,0 +1,11 @@
+{
+  "compilerOptions": {
+    "target": "es5",
+    "module": "commonjs",
+    "declaration": false,
+    "noImplicitAny": false,
+    "removeComments": true,
+    "sourceMap": true,
+    "outDir": ".tmp"
+  }
+}

test/fixtures/cts/1/package.json

@@ -0,0 +1,5 @@
+{
+  "dependencies": {
+    "sucrase": "^3.12.1"
+  }
+}

test/fixtures/cts/1/test.cts

@@ -0,0 +1,25 @@
+var test: {
+  data: {
+    trueKey: boolean;
+    falseKey: boolean;
+    subKey: {
+      subProp: number;
+    };
+  };
+} = {
+  data: {
+    trueKey: true,
+    falseKey: false,
+    subKey: {
+      subProp: 1,
+    },
+  },
+};
+
+var main: {
+  default: typeof test;
+} = {
+  default: test,
+};
+
+export = main;

test/fixtures/cts/1/tsconfig.json

@@ -0,0 +1,11 @@
+{
+  "compilerOptions": {
+    "target": "es5",
+    "module": "commonjs",
+    "declaration": false,
+    "noImplicitAny": false,
+    "removeComments": true,
+    "sourceMap": true,
+    "outDir": ".tmp"
+  }
+}

test/fixtures/cts/2/package.json

@@ -0,0 +1,8 @@
+{
+  "dependencies": {
+    "@babel/core": "^7.2.2",
+    "@babel/preset-env": "^7.2.3",
+    "@babel/preset-typescript": "^7.1.0",
+    "@babel/register": "^7.0.0"
+  }
+}

test/fixtures/cts/2/test.cts

@@ -0,0 +1,19 @@
+var test: {
+  data: {
+    trueKey: boolean;
+    falseKey: boolean;
+    subKey: {
+      subProp: number;
+    };
+  };
+} = {
+  data: {
+    trueKey: true,
+    falseKey: false,
+    subKey: {
+      subProp: 1,
+    },
+  },
+};
+
+export default test;

test/fixtures/cts/3/package.json

@@ -0,0 +1,6 @@
+{
+  "dependencies": {
+    "esbuild": "^0.14.29",
+    "esbuild-register": "^3.3.2"
+  }
+}

test/fixtures/cts/3/test.cts

@@ -0,0 +1,13 @@
+function add(x: number, y: number): number {
+  return x + y;
+}
+
+export default {
+  data: {
+    trueKey: true as boolean,
+    falseKey: false as boolean,
+    subKey: {
+      subProp: add(0.5, 0.5),
+    },
+  },
+};

test/fixtures/cts/4/package.json

@@ -0,0 +1,6 @@
+{
+  "dependencies": {
+    "@swc/core": "^1.2.110",
+    "@swc/register": "^0.1.7"
+  }
+}

test/fixtures/cts/4/test.cts

@@ -0,0 +1,15 @@
+var test = {
+  data: {
+    trueKey: true,
+    falseKey: false,
+    subKey: {
+      subProp: 1,
+    },
+  },
+};
+
+var main = {
+  default: test,
+};
+
+export = main;

test/fixtures/ts/0/package.json

@@ -1,6 +1,6 @@
 {
   "dependencies": {
-    "ts-node": "^7.0.1",
-    "typescript": "^3.2.2"
+    "ts-node": "^10.8.0",
+    "typescript": "^4.7.4"
   }
 }

test/fixtures/tsx/0/package.json

@@ -1,6 +1,6 @@
 {
   "dependencies": {
-    "ts-node": "^7.0.1",
-    "typescript": "^3.2.2"
+    "ts-node": "^10.8.0",
+    "typescript": "4.7.4"
   }
 }

test/index.js

@@ -154,6 +154,7 @@ describe('interpret.extensions', function () {
 
         switch (extension) {
           case '.ts':
+          case '.cts':
           case '.tsx':
           case '.esm.js':
           case '.babel.tsx':