create a separate file to detect bridges

bcoe · May 2, 2019 · 06d380f · 06d380f
1 parent 80109b5
commit 06d380f
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/lib/is-cjs-esm-bridge.js b/lib/is-cjs-esm-bridge.js
@@ -0,0 +1,10 @@
+module.exports = ({ functions }) => {
+  // https://github.com/nodejs/node/blob/v12.1.0/lib/internal/modules/esm/create_dynamic_module.js#L11-L19
+  return functions.length === 3 &&
+  functions[0].functionName === '' &&
+  functions[0].isBlockCoverage === true &&
+  functions[1].functionName === 'get' &&
+  functions[1].isBlockCoverage === false &&
+  functions[2].functionName === 'set' &&
+  functions[2].isBlockCoverage === true
+}