support completely ignoring node modules

README.md

@@ -115,6 +115,10 @@ code.js -> imports ./lib/index.js -> imports libFunc.js
 
 This is intended to help you defer refactoring some barels or modules that are causing trouble or breaking your tests when you integrate this plugin.
 
+## `ignoreNodeModules` **[boolean]**
+
+Set this flag to true if you want to completely ignore all node\_modules from being traversed. Default is false.
+
 # Plugin directives
 
 ## `no-boost`

jest.config.js

@@ -1,4 +1,5 @@
 module.exports = {
   transform: {},
+  setupFiles: ["<rootDir>/jest.setup.js"],
   setupFilesAfterEnv: ["jest-expect-message"],
 };

jest.setup.js

@@ -0,0 +1 @@
+process.env.BJB_ENV = "test";

package.json

@@ -22,6 +22,7 @@
   "license": "AGPL-3.0-or-later",
   "devDependencies": {
     "@eslint/js": "^9.2.0",
+    "empty-npm-package": "^1.0.0",
     "eslint": "^9.2.0",
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-jest": "^28.5.0",

package/cache.js

@@ -21,6 +21,9 @@ function cache(func, ...params) {
 }
 
 function withCache(func) {
+  if (process.env.BJB_ENV === "test") {
+    return func;
+  }
   const map = getCache(func.name);
   return function funcWithCache(...params) {
     // const cacheKey = params.join('-');

package/plugin/index.js

@@ -9,7 +9,7 @@ const {
 
 let modulePaths = null;
 let moduleNameMapper = null;
-
+let ignoreNodeModules = false;
 let importWhiteList = [];
 
 const isPathWhitelisted = withCache(function actualIsPathWhitelisted(path) {
@@ -21,7 +21,14 @@ const bjbResolve = withCache(function resolveWithWhitelist(path, basedir) {
     if (isPathWhitelisted(path)) {
       return path;
     }
-    return resolve(path, basedir, moduleNameMapper, modulePaths);
+
+    const result = resolve(path, basedir, moduleNameMapper, modulePaths);
+
+    if (ignoreNodeModules && result.includes("/node_modules/")) {
+      return path;
+    }
+
+    return result;
   } catch (e) {
     console.log("failed to resolve", e.message);
     return null;
@@ -44,6 +51,7 @@ module.exports = function babelPlugin(babel) {
         moduleNameMapper = state.opts.jestConfig?.moduleNameMapper || {};
         modulePaths = state.opts.jestConfig?.modulePaths || [];
         importWhiteList = state.opts.importIgnorePatterns || [];
+        ignoreNodeModules = state.opts.ignoreNodeModules || false;
 
         const comments = path.parent.comments || [];
         const skipProgramComment = comments.find((comment) =>

spec/import-rewrites.spec.jsm → spec/import-rewrites.spec.js

@@ -71,4 +71,22 @@ describe("babel-jest-boost plugin import rewrites", () => {
       `import { target } from "${__dirname}/test_tree/library/library.js";`,
     );
   });
+
+  it("resolves node_modules", () => {
+    const oneDirUp = __dirname.replace("/spec", "");
+    expectTransform(
+      "import { printMsg } from 'empty-npm-package';",
+      `import { printMsg } from "${oneDirUp}/node_modules/empty-npm-package/index.js";`,
+    );
+  });
+
+  it("does not resolve node_modules if configured", () => {
+    const noNodeModulesExpectTransform = createExpectTransform(__filename, {
+      ignoreNodeModules: true,
+    });
+    noNodeModulesExpectTransform(
+      "import { printMsg } from 'empty-npm-package';",
+      "import { printMsg } from 'empty-npm-package';",
+    );
+  });
 });