fix #27

src/extension.js

@@ -12,6 +12,8 @@ import { isFilePathMatchedByEslintIgnore, isFilePathMatchedByPrettierIgnore } fr
 
 const path = require('path');
 
+const rawResolve = require.resolve;
+
 let outputChannel;
 
 async function formatter(document) {
@@ -33,15 +35,44 @@ async function formatter(document) {
 
       const text = document.getText(range);
       const extensionConfig = workspace?.getConfiguration('vs-code-prettier-eslint');
+
+      /**
+       * In some case, user cannot format his/her codes and the error
+       * is "cannot find module XXX".
+       *
+       * The reason is easy.This project depends on `prettier-eslint` which
+       * uses require.resolve API to search a module path, unfortunately, it
+       * doesn't search a module path under "<user_workspace>/node_modules" as
+       * expected.
+       *
+       * To fix this bug, before we call `format`, we rewrite require.resolve,
+       * and take a try to search module path under "<user_workspace>/node_modules"
+       * firstly.When `format` is finished, restore require.resolve.
+       */
+
+      require.resolve = function resolve(...args) {
+        const [moduleName] = args;
+        let modulePath = '';
+        try {
+          modulePath = rawResolve(moduleName, { paths: [workspaceDir] });
+        } catch (err) {
+          modulePath = rawResolve(...args);
+        }
+        return modulePath;
+      };
+
       const formatted = await format({
         text,
         filePath: document.fileName,
         extensionConfig,
       });
+
       return [TextEdit.replace(range, formatted)];
     }
   } catch (err) {
     outputChannel.appendLine(`Error: ${err.message} \n${err.stack}`);
+  } finally {
+    require.resolve = rawResolve;
   }
 }