repl: add auto‑completion for node:‑prefixed require(…) calls

Refs: nodejs#37178

Author: ExE-Boss

lib/repl.js

@@ -126,6 +126,8 @@ let _builtinLibs = ArrayPrototypeFilter(
   CJSModule.builtinModules,
   (e) => !StringPrototypeStartsWith(e, '_') && !StringPrototypeIncludes(e, '/')
 );
+const nodeSchemeBuiltinLibs = ArrayPrototypeMap(
+  _builtinLibs, (lib) => `node:${lib}`);
 const domain = require('domain');
 let debug = require('internal/util/debuglog').debuglog('repl', (fn) => {
   debug = fn;
@@ -1105,7 +1107,7 @@ REPLServer.prototype.setPrompt = function setPrompt(prompt) {
   ReflectApply(Interface.prototype.setPrompt, this, [prompt]);
 };
 
-const requireRE = /\brequire\s*\(\s*['"`](([\w@./-]+\/)?(?:[\w@./-]*))(?![^'"`])$/;
+const requireRE = /\brequire\s*\(\s*['"`](([\w@./:-]+\/)?(?:[\w@./:-]*))(?![^'"`])$/;
 const fsAutoCompleteRE = /fs(?:\.promises)?\.\s*[a-z][a-zA-Z]+\(\s*["'](.*)/;
 const simpleExpressionRE =
     /(?:[a-zA-Z_$](?:\w|\$)*\??\.)*[a-zA-Z_$](?:\w|\$)*\??\.?$/;
@@ -1267,7 +1269,7 @@ function complete(line, callback) {
     }
 
     if (!subdir) {
-      ArrayPrototypePush(completionGroups, _builtinLibs);
+      ArrayPrototypePush(completionGroups, _builtinLibs, nodeSchemeBuiltinLibs);
     }
   } else if (RegExpPrototypeTest(fsAutoCompleteRE, line) &&
              this.allowBlockingCompletions) {

test/parallel/test-repl-tab-complete.js

@@ -31,6 +31,10 @@ const assert = require('assert');
 const path = require('path');
 const fixtures = require('../common/fixtures');
 const { builtinModules } = require('module');
+const publicModules = builtinModules.filter(
+  (lib) => !lib.startsWith('_') && !lib.includes('/'),
+);
+
 const hasInspector = process.features.inspector;
 
 if (!common.isMainThread)
@@ -239,9 +243,9 @@ putIn.run(['.clear']);
 
 testMe.complete('require(\'', common.mustCall(function(error, data) {
   assert.strictEqual(error, null);
-  builtinModules.forEach((lib) => {
+  publicModules.forEach((lib) => {
     assert(
-      data[0].includes(lib) || lib.startsWith('_') || lib.includes('/'),
+      data[0].includes(lib) && data[0].includes(`node:${lib}`),
       `${lib} not found`
     );
   });
@@ -258,6 +262,10 @@ testMe.complete("require\t( 'n", common.mustCall(function(error, data) {
   assert.strictEqual(error, null);
   assert.strictEqual(data.length, 2);
   assert.strictEqual(data[1], 'n');
+  // require(...) completions include `node:`-prefixed modules:
+  publicModules.forEach((lib, index) =>
+    assert.strictEqual(data[0][index], `node:${lib}`));
+  assert.strictEqual(data[0][publicModules.length], '');
   // There is only one Node.js module that starts with n:
   assert.strictEqual(data[0][0], 'net');
   assert.strictEqual(data[0][1], '');