repl: fix referrer for dynamic import

The ESM loader does not accept a directory as the referrer, it requires
a path within the directory.  Add `/repl` to ensure relative dynamic
imports can succeed.

Fixes: https://github.com/nodejs/node/issues/19570

PR-URL: https://github.com/nodejs/node/pull/30609
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ben Coe <bencoe@gmail.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/test/parallel/test-repl-import-referrer.js b/test/parallel/test-repl-import-referrer.js
new file mode 100644
index 0000000000..33bc442e6f
--- /dev/null
+++ b/test/parallel/test-repl-import-referrer.js
@@ -0,0 +1,24 @@
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const cp = require('child_process');
+const fixtures = require('../common/fixtures');
+
+const args = ['--interactive', '--experimental-repl-await'];
+const opts = { cwd: fixtures.path('es-modules') };
+const child = cp.spawn(process.execPath, args, opts);
+
+let output = '';
+child.stdout.setEncoding('utf8');
+child.stdout.on('data', (data) => {
+  output += data;
+});
+
+child.on('exit', common.mustCall(() => {
+  const results = output.replace(/^> /mg, '').split('\n').slice(2);
+  assert.deepStrictEqual(results, ['[Module] { message: \'A message\' }', '']);
+}));
+
+child.stdin.write('await import(\'./message.mjs\');\n');
+child.stdin.write('.exit');
+child.stdin.end();