Replace ts-node with tsx

Author: cmoesel

.mocharc.json

@@ -1,5 +1,5 @@
 {
   "ignore": ["test/spec-tests/*.js"],
   "extension": ["ts"],
-  "require": ["ts-node/register", "./test/should-extensions.ts"]
+  "require": ["tsx/cjs", "./test/should-extensions.ts"]
 }

DEPENDENCY_NOTES.md

@@ -3,5 +3,5 @@ The following notes about the app's dependencies should be revisited and resolve
 As of 2026-07-27:
 
 - `@types/node`: Consider updating to `26.x` in the future, but for now `24.x` still has plent of time in LTS.
-- `typescript`: `7.x` uses a new native compiler without a native API. Libraries like `ts-node` do not yet support it.
+- `typescript`: `7.x` uses a new native compiler without a native API. Consider updating soon after evaluating the impact.
 - `tslog` (test-server only): `5.x` is ESM-only and replaces v4's flat logger settings such as `hideLogPositionForProduction` and `prettyLogTemplate`. Updating will require some migration.

README.md

@@ -151,10 +151,10 @@ In the above file, we've assumed the JSON ELM JSON file for the measure is calle
 also assumed a couple of very simple patients.  Let's call the file we just created
 `exec-age.ts`.
 
-Now we can execute the measure using [ts-node](https://www.npmjs.com/package/ts-node):
+Now we can execute the measure using [tsx](https://tsx.is/):
 
 ``` bash
-npx ts-node -O '{ "resolveJsonModule": true }' --files ${path_to_cql-execution}/customCQL/exec-age.ts
+npx tsx ${path_to_cql-execution}/customCQL/exec-age.ts
 ```
 
 If all is well, it should print the result object to standard out.

examples/browser/cql4browsers.js

@@ -3956,42 +3956,11 @@ exports.Predecessor = Predecessor;
 
 },{"../datatypes/datetime":8,"../datatypes/quantity":12,"../datatypes/uncertainty":14,"../util/elmTypes":55,"../util/limits":57,"../util/math":58,"./builder":17,"./expression":23}],17:[function(require,module,exports){
 "use strict";
-var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
-    if (k2 === undefined) k2 = k;
-    var desc = Object.getOwnPropertyDescriptor(m, k);
-    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
-      desc = { enumerable: true, get: function() { return m[k]; } };
-    }
-    Object.defineProperty(o, k2, desc);
-}) : (function(o, m, k, k2) {
-    if (k2 === undefined) k2 = k;
-    o[k2] = m[k];
-}));
-var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
-    Object.defineProperty(o, "default", { enumerable: true, value: v });
-}) : function(o, v) {
-    o["default"] = v;
-});
-var __importStar = (this && this.__importStar) || (function () {
-    var ownKeys = function(o) {
-        ownKeys = Object.getOwnPropertyNames || function (o) {
-            var ar = [];
-            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
-            return ar;
-        };
-        return ownKeys(o);
-    };
-    return function (mod) {
-        if (mod && mod.__esModule) return mod;
-        var result = {};
-        if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
-        __setModuleDefault(result, mod);
-        return result;
-    };
-})();
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.build = build;
-const E = __importStar(require("./expressions"));
+// Keep the live exports object because this module and expressions have a circular dependency.
+// Otherwise, tsx fails when attempting to run this.
+const E = require("./expressions");
 const util_1 = require("../util/util");
 function build(json) {
     if (json == null) {