nodejs
diff --git a/‎doc/api/repl.markdown‎
Lines changed: 1 addition & 1 deletion b/‎doc/api/repl.markdown‎
Lines changed: 1 addition & 1 deletion
diff --git a/‎lib/repl.js‎
Lines changed: 0 additions & 2 deletions b/‎lib/repl.js‎
Lines changed: 0 additions & 2 deletions
diff --git a/‎test/parallel/test-repl-options.js‎
Lines changed: 14 additions & 0 deletions b/‎test/parallel/test-repl-options.js‎
Lines changed: 14 additions & 0 deletions
@@ -243,7 +243,7 @@ blocks. The `preserveCursor` argument is passed to [`readline.prompt`][]. This i
 used primarily with `defineCommand`. It's also used internally to render each
 prompt line.
 
-## repl.start(options)
+## repl.start([options])
 
 Returns and starts a `REPLServer` instance, that inherits from
 [Readline Interface][]. Accepts an "options" Object that takes
 
@@ -194,8 +194,6 @@ function REPLServer(prompt,
     prompt = options.prompt;
     dom = options.domain;
     replMode = options.replMode;
-  } else if (typeof prompt !== 'string') {
-    throw new Error('An options Object, or a prompt String are required');
   } else {
     options = {};
   }
 
@@ -77,3 +77,17 @@ var r3 = repl.start({
 
 assert.equal(r3.replMode, repl.REPL_MODE_MAGIC);
 assert.equal(r3.historySize, 50);
+
+// Verify that defaults are used when no arguments are provided
+const r4 = repl.start();
+
+assert.strictEqual(r4._prompt, '> ');
+assert.strictEqual(r4.input, process.stdin);
+assert.strictEqual(r4.output, process.stdout);
+assert.strictEqual(r4.terminal, !!r4.output.isTTY);
+assert.strictEqual(r4.useColors, r4.terminal);
+assert.strictEqual(r4.useGlobal, false);
+assert.strictEqual(r4.ignoreUndefined, false);
+assert.strictEqual(r4.replMode, repl.REPL_MODE_SLOPPY);
+assert.strictEqual(r4.historySize, 30);
+r4.close();
Original file line number	Diff line number	Diff line change
@@ -194,8 +194,6 @@ function REPLServer(prompt,
194	194	prompt = options.prompt;
195	195	dom = options.domain;
196	196	replMode = options.replMode;
197		- } else if (typeof prompt !== 'string') {
198		- throw new Error('An options Object, or a prompt String are required');
199	197	} else {
200	198	options = {};
201	199	}