Build mocha tests as esmodule / .mjs (#7115)

* Build mocha tests as esmodule / .mjs

* CHANGELOG

Author: cknitt

CHANGELOG.md

@@ -62,6 +62,7 @@
 - Move `ounit_tests` into the `tests` folder. https://github.com/rescript-lang/rescript-compiler/pull/7096
 - Move `syntax_tests` into the `tests` folder. https://github.com/rescript-lang/rescript-compiler/pull/7090 https://github.com/rescript-lang/rescript-compiler/pull/7097
 - Capitalize runtime filenames. https://github.com/rescript-lang/rescript-compiler/pull/7110
+- Build mocha tests as esmodule / .mjs. https://github.com/rescript-lang/rescript-compiler/pull/7115
 
 # 12.0.0-alpha.3
 

biome.json

@@ -23,7 +23,6 @@
     "ignore": [
       "tests/build_tests/**",
       "tests/tests/**",
-      "tests/tests_esmodule/**",
       "lib/**",
       "ninja/**",
       "playground/**",

scripts/test.js

@@ -65,12 +65,7 @@ async function runTests() {
       stdio: [0, 1, 2],
     });
 
-    cp.execSync(rescript_exe, {
-      cwd: path.join(__dirname, "..", "tests/tests_esmodule"),
-      stdio: [0, 1, 2],
-    });
-
-    cp.execSync(`npx mocha -t 10000 tests/tests/**/*_test.js`, {
+    cp.execSync(`npx mocha -t 10000 tests/tests/**/*_test.mjs`, {
       cwd: path.join(__dirname, ".."),
       stdio: [0, 1, 2],
     });

tests/tests/rescript.json

@@ -7,8 +7,9 @@
     }
   ],
   "package-specs": {
-    "module": "commonjs",
-    "in-source": true
+    "module": "esmodule",
+    "in-source": true,
+    "suffix": ".mjs"
   },
   "bsc-flags": [
     "-w -3-6-26-27-29-30-32..40-44-45-52-60-9-106+104",

tests/tests/src/AsInUncurriedExternals.js

@@ -0,0 +1,27 @@
+// Generated by ReScript, PLEASE EDIT WITH CARE
+
+
+function mo(prim0, prim1) {
+  return {
+    objectMode: false,
+    name: prim0,
+    someOther: true
+  };
+}
+
+let options = {
+  objectMode: false,
+  name: "foo",
+  someOther: true
+};
+
+function shouldNotFail(objectMode, name) {
+  return 3;
+}
+
+export {
+  mo,
+  options,
+  shouldNotFail,
+}
+/* No side effect */

tests/tests/src/AsInUncurriedExternals.mjs

@@ -0,0 +1,17 @@
+// Generated by ReScript, PLEASE EDIT WITH CARE
+
+
+function foo(x) {
+  return x;
+}
+
+let x = 1;
+
+let xx = 1;
+
+export {
+  x,
+  xx,
+  foo,
+}
+/* No side effect */

tests/tests/src/Coercion.js

@@ -0,0 +1,57 @@
+// Generated by ReScript, PLEASE EDIT WITH CARE
+
+
+function myField(param) {
+  return param.myField;
+}
+
+function num(param_0) {
+  return {
+    TAG: "Num",
+    _0: param_0
+  };
+}
+
+function doubleNum(param_0, param_1) {
+  return {
+    TAG: "DoubleNum",
+    _0: param_0,
+    _1: param_1
+  };
+}
+
+function compose(a, accessor) {
+  return accessor(a);
+}
+
+let _composedMyField = 1;
+
+let _composedNum = {
+  TAG: "Num",
+  _0: 1
+};
+
+let noParam = "NoParam";
+
+let _myFieldAlias = myField;
+
+let _noParamAlias = "NoParam";
+
+let _numAlias = num;
+
+let _doubleNumAlias = doubleNum;
+
+export {
+  myField,
+  noParam,
+  num,
+  doubleNum,
+  _myFieldAlias,
+  _noParamAlias,
+  _numAlias,
+  _doubleNumAlias,
+  compose,
+  _composedMyField,
+  _composedNum,
+}
+/* No side effect */

tests/tests/src/Coercion.mjs

@@ -0,0 +1,57 @@
+// Generated by ReScript, PLEASE EDIT WITH CARE
+
+
+function myField(param) {
+  return param.myField;
+}
+
+function num(param_0) {
+  return {
+    TAG: "Num",
+    _0: param_0
+  };
+}
+
+function doubleNum(param_0, param_1) {
+  return {
+    TAG: "DoubleNum",
+    _0: param_0,
+    _1: param_1
+  };
+}
+
+function compose(a, accessor) {
+  return accessor(a);
+}
+
+let _composedMyField = 1;
+
+let _composedNum = {
+  TAG: "Num",
+  _0: 1
+};
+
+let noParam = "NoParam";
+
+let _myFieldAlias = myField;
+
+let _noParamAlias = "NoParam";
+
+let _numAlias = num;
+
+let _doubleNumAlias = doubleNum;
+
+export {
+  myField,
+  noParam,
+  num,
+  doubleNum,
+  _myFieldAlias,
+  _noParamAlias,
+  _numAlias,
+  _doubleNumAlias,
+  compose,
+  _composedMyField,
+  _composedNum,
+}
+/* No side effect */

tests/tests/src/DerivingAccessorsCurried.js

@@ -0,0 +1,17 @@
+// Generated by ReScript, PLEASE EDIT WITH CARE
+
+import * as Js_dict from "rescript/lib/es6/Js_dict.js";
+
+let dict = {};
+
+dict["someKey1"] = 1;
+
+dict["someKey2"] = 2;
+
+let asArray = Js_dict.values(dict);
+
+export {
+  dict,
+  asArray,
+}
+/*  Not a pure module */