try again

hook.js

@@ -4,7 +4,6 @@
 
 const fs = require('fs');
 const { fileURLToPath } = require('url')
-const astParse = require('./lib/ast-parse.js')
 const specifiers = new Map()
 const isWin = process.platform === "win32"
 
@@ -24,6 +23,12 @@ if (NODE_MAJOR >= 20) {
   getExports = (url) => import(url).then(Object.keys)
 }
 
+if (NODE_MAJOR >= 16) {
+  astParse = require('./lib/ast-parse.js')
+} else {
+  astParse = undefined
+}
+
 function hasIitm (url) {
   try {
     return new URL(url).searchParams.has('iitm')
@@ -148,7 +153,7 @@ register(${JSON.stringify(realUrl)}, namespace, set, ${JSON.stringify(specifiers
 `
       } 
     }
-    else if (context.format === 'module' && NODE_MAJOR >= 16) {
+    else if (NODE_MAJOR >= 16 && context.format === 'module') {
       let fileContents
       try {
         fileContents = fs.readFileSync(fileURLToPath(url), 'utf8')

package.json

@@ -4,7 +4,7 @@
   "description": "Intercept imports in Node.js",
   "main": "index.js",
   "scripts": {
-    "test": "c8 --check-coverage --lines 85 imhotap --runner 'node test/runtest' --files test/{hook,low-level,other,get-esm-exports}/*",
+    "test": "c8 --check-coverage --lines 80 imhotap --runner 'node test/runtest' --files test/{hook,low-level,other,get-esm-exports}/*",
     "test:ts": "c8 imhotap --runner 'node test/runtest' --files test/typescript/*.test.mts",
     "coverage": "c8 --reporter html imhotap --runner 'node test/runtest' --files test/{hook,low-level,other,get-esm-exports}/* && echo '\nNow open coverage/index.html\n'"
   },