fix: improved support for cjs and cts modules (#26558)

* cts support
* better cjs/cts type checking
* deno compile cjs/cts support
* More efficient detect cjs (going towards stabilization)
* Determination of whether .js, .ts, .jsx, or .tsx is cjs or esm is only
done after loading
* Support `import x = require(...);`

Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>

7 files changed, 38 insertions, 0 deletions

diff --git a/tests/specs/compile/cjs/__test__.jsonc b/tests/specs/compile/cjs/__test__.jsonc
new file mode 100644
index 000000000..9bdcf4724
--- /dev/null
+++ b/tests/specs/compile/cjs/__test__.jsonc
@@ -0,0 +1,24 @@
+{
+  "tempDir": true,
+  "steps": [{
+    "if": "unix",
+    "args": "compile --output main main.js",
+    "output": "[WILDCARD]"
+  }, {
+    "if": "unix",
+    "commandName": "./main",
+    "args": [],
+    "output": "output.out",
+    "exitCode": 0
+  }, {
+    "if": "windows",
+    "args": "compile --output main.exe main.js",
+    "output": "[WILDCARD]"
+  }, {
+    "if": "windows",
+    "commandName": "./main.exe",
+    "args": [],
+    "output": "output.out",
+    "exitCode": 0
+  }]
+}
diff --git a/tests/specs/compile/cjs/add.cjs b/tests/specs/compile/cjs/add.cjs
new file mode 100644
index 000000000..bf9060126
--- /dev/null
+++ b/tests/specs/compile/cjs/add.cjs
@@ -0,0 +1 @@
+module.exports = (a, b) => a + b;
diff --git a/tests/specs/compile/cjs/divide.cts b/tests/specs/compile/cjs/divide.cts
new file mode 100644
index 000000000..d89a600a4
--- /dev/null
+++ b/tests/specs/compile/cjs/divide.cts
@@ -0,0 +1 @@
+module.exports.divide = (a: number, b: number) => a / b;
diff --git a/tests/specs/compile/cjs/main.js b/tests/specs/compile/cjs/main.js
new file mode 100644
index 000000000..c2a8c7be0
--- /dev/null
+++ b/tests/specs/compile/cjs/main.js
@@ -0,0 +1,5 @@
+import { add } from "./reexport.cjs";
+import { multiply } from "./multiply.cts";
+
+console.log(add(1, 2));
+console.log(multiply(2, 3));
diff --git a/tests/specs/compile/cjs/multiply.cts b/tests/specs/compile/cjs/multiply.cts
new file mode 100644
index 000000000..3c0618cfc
--- /dev/null
+++ b/tests/specs/compile/cjs/multiply.cts
@@ -0,0 +1,4 @@
+/// <reference types="npm:@types/node" />
+exports.multiply = function (a: number, b: number): number {
+  return require("./divide.cts").divide(a, 1 / b);
+};
diff --git a/tests/specs/compile/cjs/output.out b/tests/specs/compile/cjs/output.out
new file mode 100644
index 000000000..2559e5c49
--- /dev/null
+++ b/tests/specs/compile/cjs/output.out
@@ -0,0 +1,2 @@
+3
+6
diff --git a/tests/specs/compile/cjs/reexport.cjs b/tests/specs/compile/cjs/reexport.cjs
new file mode 100644
index 000000000..af7cecfdf
--- /dev/null
+++ b/tests/specs/compile/cjs/reexport.cjs
@@ -0,0 +1 @@
+module.exports.add = require("./add.cjs");