update

schemas/WebpackOptions.json

@@ -650,7 +650,7 @@
       "additionalProperties": false,
       "properties": {
         "dir": {
-          "description": "The directory from which .env files are loaded. Defaults to the webpack context. Loads .env, .env.local, .env.[mode], .env.[mode].local in order.",
+          "description": "The directory from which .env files are loaded. Can be an absolute path, or a path relative to the project root. false will disable the .env file loading.",
           "anyOf": [
             {
               "type": "boolean"

test/__snapshots__/Cli.basictest.js.snap

@@ -481,19 +481,19 @@ Object {
   "dotenv-dir": Object {
     "configs": Array [
       Object {
-        "description": "The directory from which .env files are loaded. Defaults to the webpack context. Loads .env, .env.local, .env.[mode], .env.[mode].local in order.",
+        "description": "The directory from which .env files are loaded. Can be an absolute path, or a path relative to the project root. false will disable the .env file loading.",
         "multiple": false,
         "path": "dotenv.dir",
         "type": "boolean",
       },
       Object {
-        "description": "The directory from which .env files are loaded. Defaults to the webpack context. Loads .env, .env.local, .env.[mode], .env.[mode].local in order.",
+        "description": "The directory from which .env files are loaded. Can be an absolute path, or a path relative to the project root. false will disable the .env file loading.",
         "multiple": false,
         "path": "dotenv.dir",
         "type": "string",
       },
     ],
-    "description": "The directory from which .env files are loaded. Defaults to the webpack context. Loads .env, .env.local, .env.[mode], .env.[mode].local in order.",
+    "description": "The directory from which .env files are loaded. Can be an absolute path, or a path relative to the project root. false will disable the .env file loading.",
     "multiple": false,
     "simpleType": "string",
   },

test/configCases/plugins/dotenv-plugin/disabled-dir.js

@@ -0,0 +1,16 @@
+"use strict";
+
+it("should not load any .env files when dir is false", () => {
+	// When dir: false, no .env files should be loaded
+	// Only environment variables that were already set in process.env should be available
+	// and only those with WEBPACK_ prefix should be exposed
+	
+	// These should be undefined since no .env files are loaded
+	expect(typeof process.env.WEBPACK_API_URL).toBe("undefined");
+	expect(typeof process.env.WEBPACK_MODE).toBe("undefined");
+	expect(typeof process.env.SECRET_KEY).toBe("undefined");
+	expect(typeof process.env.PRIVATE_VAR).toBe("undefined");
+	
+	// Only pre-existing process.env variables with WEBPACK_ prefix should be available
+	// (if any were set before webpack runs)
+});

test/configCases/plugins/dotenv-plugin/webpack.config.js

@@ -41,5 +41,14 @@ module.exports = [
 		mode: "production",
 		entry: "./mode-specific.js",
 		dotenv: true
+	},
+	// Test 6: Disabled dir - dir: false disables .env file loading
+	{
+		name: "disabled-dir",
+		mode: "development",
+		entry: "./disabled-dir.js",
+		dotenv: {
+			dir: false
+		}
 	}
 ];