feat(node-resolve): Increase the support for .mjs/.cjs

Import .mts or .cts files in TypeScript files requires passing through .mjs or .cjs flies.
rollup · Mar 12, 2023 · 0e98f97 · 0e98f97
1 parent bc5cf91
commit 0e98f97
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/packages/node-resolve/src/index.js b/packages/node-resolve/src/index.js
@@ -154,6 +154,12 @@ export function nodeResolve(opts = {}) {
         }
       }
     }
+    // TypeScript files may import '.mjs' or '.cjs' to refer to either '.mts' or '.cts'
+    for (const [ext, tsExt] of [['.mjs', '.mts'], ['.cjs', '.cts']]) {
+      if (importee.endsWith(ext) && extensions.includes(tsExt)) {
+        importSpecifierList.push(importee.replace(/\.([mc])js$/, '.$1ts'));
+      }
+    }
 
     const warn = (...args) => context.warn(...args);
     const isRequire = custom && custom['node-resolve'] && custom['node-resolve'].isRequire;