Support latest version of chai

jest.config.mjs

@@ -1,3 +1,4 @@
 export default {
+  transform: {},
   silent: true
 }

lib/cds-test.js

@@ -148,22 +148,21 @@ class Test extends require('./axios') {
   get chai() {
     if (global.chai)  return global.chai
     const chai = require('chai')
-    chai.use (require('chai-subset'))
     const chaip = require('chai-as-promised')
     chai.use (chaip.default/*v8 on ESM*/ ?? chaip/*v7*/)
     return chai
-    function require (mod) { try { return module.require(mod) } catch(e) {
-      if (e.code === 'MODULE_NOT_FOUND')
-        throw new Error (`Failed to load required package '${mod}'. Please add it thru:`
-        + `\n  npm add -D chai chai-as-promised chai-subset`, {cause: e})
-      else if (e.name === 'SyntaxError') // Jest stumbling over ESM
-        throw new Error (`Jest failed to load ESM package '${mod}'.`
-        + `\nDowngrade '${mod}' to the major version before, or use a different test runner like 'node --test'.\n`, {cause: e})
-      else if (e.code === 'ERR_REQUIRE_ESM') // node --test on older Node versions
-        throw new Error (`Failed to load ESM package '${mod}'. This only is supported on Node.js >= 23.`
-          + `\nUpgrade your Node.js installation or downgrade '${mod}' to the major version before.\n`, {cause: e})
-      else throw e
-    }}
+    // function require (mod) { try { return _require (mod) } catch(e) {
+    //   if (e.code === 'MODULE_NOT_FOUND')
+    //     throw new Error (`Failed to load required package '${mod}'. Please add it thru:`
+    //     + `\n  npm add -D chai chai-as-promised chai-subset`, {cause: e})
+    //   // else if (e.name === 'SyntaxError') // Jest stumbling over ESM
+    //   //   throw new Error (`Jest failed to load ESM package '${mod}'.`
+    //   //   + `\nDowngrade '${mod}' to the major version before, or use a different test runner like 'node --test'.\n`, {cause: e})
+    //   // else if (e.code === 'ERR_REQUIRE_ESM') // node --test on older Node versions
+    //   //   throw new Error (`Failed to load ESM package '${mod}'. This only is supported on Node.js >= 23.`
+    //   //     + `\nUpgrade your Node.js installation or downgrade '${mod}' to the major version before.\n`, {cause: e})
+    //   else throw e
+    // }}
   }
   // set expect(x) { super.expect = x }
   get expect() { return this.chai.expect }

package.json

@@ -34,8 +34,8 @@
   },
   "dependencies": {
     "axios": "^1",
-    "chai": "^4.4.1",
-    "chai-as-promised": "^7.1.1",
+    "chai": "^6",
+    "chai-as-promised": "^8",
     "chai-subset": "^1.6.0"
   },
   "peerDependencies": {

test/chai.test.js

@@ -0,0 +1,27 @@
+// jest.unstable_shouldLoadAsEsm = ()=>false
+
+// Requires jest to be run with NODE_OPTIONS="--experimental-vm-modules"
+it.skip ('should load chai via dynamic import', async ()=>{
+  const chai = await import('chai')
+  console.log (chai)
+  chai.expect(chai).to.exist
+  expect(chai).toBeDefined()
+})
+
+// Supported by Node 24, but not by jest's monkey-patched require implementation
+it.skip ('should load chai via createRequire', async ()=>{
+  const chai = require ('chai')
+  console.log (chai)
+  chai.expect(chai).to.exist
+  expect(chai).toBeDefined()
+})
+
+// Supported by Node 24, but not by jest's monkey-patched createRequire implementation
+it.skip ('should load chai via createRequire', async ()=>{
+  const { createRequire } = require ('module')
+  require = createRequire (__filename)
+  const chai = require ('chai')
+  console.log (chai)
+  chai.expect(chai).to.exist
+  expect(chai).toBeDefined()
+})