2026 04 gg regex

.gitignore

@@ -53,3 +53,5 @@ test-cases-summary.txt
 tx/data/CodeSystem-cpt.db
 
 coverage/
+
+.claude/

library/regex-utilities.js

@@ -0,0 +1,13 @@
+const { RE2 } = require('re2-wasm');
+
+class RegExUtilities {
+
+  compile(pattern, flags) {
+    // RE2 requires the unicode flag; add it if not already present
+    const re2Flags = flags && flags.includes('u') ? flags : (flags || '') + 'u';
+    return new RE2(pattern, re2Flags);
+  }
+
+}
+
+module.exports = new RegExUtilities();

package.json

@@ -1,7 +1,7 @@
 {
   "name": "fhirsmith",
   "version": "0.8.6",
-  "txVersion" : "1.9.1",
+  "txVersion": "1.9.1",
   "description": "A Node.js server that provides a collection of tools to serve the FHIR ecosystem",
   "main": "server.js",
   "engines": {
@@ -51,7 +51,7 @@
     "fs-extra": "^11.3.3",
     "ini": "^6.0.0",
     "inquirer": "^8.2.5",
-    "liquidjs": "^10.24.0",
+    "liquidjs": "^10.25.5",
     "lusca": "^1.7.0",
     "natural": "^6.12.0",
     "node-cron": "^3.0.3",
@@ -61,6 +61,7 @@
     "passport-github2": "^0.1.12",
     "passport-google-oauth20": "^2.0.0",
     "properties-file": "^3.6.4",
+    "re2-wasm": "^1.0.2",
     "rimraf": "^5.0.10",
     "sqlite3": "^5.1.7",
     "tar": "^7.5.7",

tests/cs/cs-cs.test.js

@@ -1520,7 +1520,7 @@ describe('FHIR CodeSystem Provider', () => {
         test('should handle invalid regex gracefully', async () => {
           await expect(
             simpleProvider.filter(filterContext, 'code', 'regex', '[invalid')
-          ).rejects.toThrow('Invalid regex pattern');
+          ).rejects.toThrow('The regex \'[invalid\' is not valid: Invalid regular expression: /^[invalid$/u: missing ]: [invalid$');
         });
       });