chore: opt out switch for esm patching in test runner

Author: raphael-theriault-swi

.github/workflows/unit-test.yml

@@ -14,7 +14,7 @@ jobs:
         node_version:
           - "18.19.0"
           - "18"
-          - "20.6.1" # `import`ing cjs code is broken on 20.6.0
+          - "20.6.0"
           - "20"
           - "22"
           - "23"
@@ -40,7 +40,7 @@ jobs:
         if: ${{
           matrix.node_version == '18.19.0' ||
           matrix.node_version == '18' ||
-          matrix.node_version == '20.6.1'
+          matrix.node_version == '20.6.0'
           }}
       - run: npm install -g npm@latest
         if: ${{

api/package.json

@@ -34,7 +34,7 @@
     "lint:fix": "eslint . --ext .ts --fix",
     "lint": "eslint . --ext .ts",
     "test:browser": "karma start --single-run",
-    "test": "nyc mocha 'test/**/*.test.ts'",
+    "test": "cross-env MOCHA_DONT_PATCH_ESM=true nyc mocha 'test/**/*.test.ts'",
     "test:webworker": "karma start karma.worker.js --single-run",
     "cycle-check": "dpdm --exit-code circular:1 src/index.ts",
     "version": "node ../scripts/version-update.js",
@@ -80,6 +80,7 @@
     "@types/webpack-env": "1.16.3",
     "babel-plugin-istanbul": "7.0.0",
     "cross-var": "1.1.0",
+    "cross-env": "6.0.3",
     "dpdm": "3.13.1",
     "karma": "6.4.4",
     "karma-chrome-launcher": "3.1.0",

experimental/packages/opentelemetry-instrumentation/package.json

@@ -48,7 +48,7 @@
     "tdd:node": "npm run test -- --watch-extensions ts --watch",
     "tdd:browser": "karma start",
     "test:cjs": "nyc mocha 'test/**/*.test.ts' --exclude 'test/browser/**/*.ts'",
-    "test:esm": "nyc node --experimental-loader=./hook.mjs ../../../node_modules/mocha/bin/mocha 'test/node/*.test.mjs'",
+    "test:esm": "cross-env MOCHA_DONT_PATCH_ESM=true nyc node --experimental-loader=./hook.mjs ../../../node_modules/mocha/bin/mocha 'test/node/*.test.mjs'",
     "test": "npm run test:cjs && npm run test:esm",
     "test:browser": "karma start --single-run",
     "version": "node ../../../scripts/version-update.js",
@@ -91,6 +91,7 @@
     "babel-plugin-istanbul": "7.0.0",
     "codecov": "3.8.3",
     "cross-var": "1.1.0",
+    "cross-env": "6.0.3",
     "karma": "6.4.4",
     "karma-chrome-launcher": "3.1.0",
     "karma-coverage": "2.2.1",

package-lock.json

@@ -3,7 +3,6 @@ const { pathToFileURL } = require('url');
 
 require('ts-node/register');
 
-const shouldPatchEsm = process.execArgv.every(arg => !arg.includes('loader'));
-if (shouldPatchEsm) {
+if (process.env.MOCHA_DONT_PATCH_ESM == null) {
   register('ts-node/esm', pathToFileURL(__filename));
 }