fix(cli): show help flag when defaults fail

bin/cli.js

@@ -496,6 +496,17 @@ For more information, see https://webpack.js.org/api/cli/.`);
 					);
 				} else if (stats.hash !== lastHash) {
 					lastHash = stats.hash;
+					if (stats.compilation && stats.compilation.errors.length !== 0) {
+						const errors = stats.compilation.errors;
+						if (errors[0].name === "EntryModuleNotFoundError") {
+							console.error(
+								"\n\u001b[1m\u001b[31mInsufficient number of arguments or no entry found."
+							);
+							console.error(
+								"\u001b[1m\u001b[31mAlternatively, run 'webpack(-cli) --help' for usage info.\u001b[39m\u001b[22m\n"
+							);
+						}
+					}
 					const statsString = stats.toString(outputOptions);
 					const delimiter = outputOptions.buildDelimiter
 						? `${outputOptions.buildDelimiter}\n`

packages/utils/recursive-parser.test.js

@@ -2,26 +2,20 @@
 
 const defineTest = require("./defineTest");
 
-defineTest(
-	__dirname,
-	"entry",
-	"fixture-1",
-	{
-		objects: "are",
-		super: [
-			"yeah",
-			{
-				test: new RegExp(/\.(js|vue)$/),
-				loader: "'eslint-loader'",
-				enforce: "'pre'",
-				include: ["customObj", "'Stringy'"],
-				options: {
-					formatter: "'someOption'"
-				}
+defineTest(__dirname, "init", "fixture-1", "entry", {
+	objects: "are",
+	super: [
+		"yeah",
+		{
+			test: new RegExp(/\.(js|vue)$/),
+			loader: "'eslint-loader'",
+			enforce: "'pre'",
+			include: ["customObj", "'Stringy'"],
+			options: {
+				formatter: "'someOption'"
 			}
-		],
-		nice: "':)'",
-		man: "() => duper"
-	},
-	"init"
-);
+		}
+	],
+	nice: "':)'",
+	man: "() => duper"
+});

test/binCases/no-options/development/stdin.js

@@ -1,13 +1,9 @@
 "use strict";
 
 module.exports = function testAssertions(code, stdout, stderr) {
-	expect(code).toBe(2);
+	expect(code).toBe(0);
 	expect(stdout).toEqual(expect.anything());
-	expect(stdout[0]).toContain("Hash: ");
-	expect(stdout[1]).toContain("Version: ");
-	expect(stdout[2]).toContain("Time: ");
-	expect(stdout[4]).toContain("");
-	expect(stdout[5]).toContain("ERROR in Entry module not found");
-	expect(stdout[6]).toContain("");
+	expect(stdout[3]).toContain("Insufficient number of arguments provided");
+	expect(stdout[4]).toContain("Alternatively, run `webpack(-cli) --help` for usage info");
 	expect(stderr).toHaveLength(0);
 };

test/binCases/no-options/none/stdin.js

@@ -1,16 +1,9 @@
 "use strict";
 
 module.exports = function testAssertions(code, stdout, stderr) {
-	expect(code).toBe(2);
+	expect(code).toBe(0);
 	expect(stdout).toEqual(expect.anything());
-	expect(stdout[0]).toContain("Hash: ");
-	expect(stdout[1]).toContain("Version: ");
-	expect(stdout[2]).toContain("Time: ");
-	expect(stdout[4]).toContain("");
-	expect(stdout[5]).toContain("WARNING");
-	expect(stdout[6]).toContain("The \'mode\' option has not been set");
-	expect(stdout[7]).toContain("You can also set it to \'none\'");
-	expect(stdout[8]).toContain("");
-	expect(stdout[9]).toContain("ERROR in Entry module not found");
+	expect(stdout[3]).toContain("Insufficient number of arguments provided");
+	expect(stdout[4]).toContain("Alternatively, run `webpack(-cli) --help` for usage info");
 	expect(stderr).toHaveLength(0);
 };

test/binCases/no-options/production/stdin.js

@@ -1,13 +1,9 @@
 "use strict";
 
 module.exports = function testAssertions(code, stdout, stderr) {
-	expect(code).toBe(2);
+	expect(code).toBe(0);
 	expect(stdout).toEqual(expect.anything());
-	expect(stdout[0]).toContain("Hash: ");
-	expect(stdout[1]).toContain("Version: ");
-	expect(stdout[2]).toContain("Time: ");
-	expect(stdout[4]).toContain("");
-	expect(stdout[5]).toContain("ERROR in Entry module not found");
-	expect(stdout[6]).toContain("");
+	expect(stdout[3]).toContain("Insufficient number of arguments provided");
+	expect(stdout[4]).toContain("Alternatively, run `webpack(-cli) --help` for usage info");
 	expect(stderr).toHaveLength(0);
 };

test/binCases/no-options/stdin.js

@@ -0,0 +1,5 @@
+"use strict";
+
+module.exports = function testAssertions(code, stdout, stderr) {
+	expect(stdout[3]).toContain("Insufficient number of arguments provided");
+};