From eee5c1f6bd8c7ba8ce468b5022401b9051f9aa85 Mon Sep 17 00:00:00 2001
From: Gus Caplan <me@gus.host>
Date: Thu, 29 Mar 2018 19:30:25 -0500
Subject: [PATCH] repl: enable dynamic import

---
 lib/repl.js | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/lib/repl.js b/lib/repl.js
index a7977dc72fb781..986b22217be6aa 100644
--- a/lib/repl.js
+++ b/lib/repl.js
@@ -49,6 +49,7 @@ const {
 } = require('internal/modules/cjs/helpers');
 const internalUtil = require('internal/util');
 const { isTypedArray } = require('internal/util/types');
+const { getURLFromFilePath } = require('internal/url');
 const util = require('util');
 const utilBinding = process.binding('util');
 const { inherits } = util;
@@ -256,7 +257,17 @@ function REPLServer(prompt,
         }
         script = vm.createScript(code, {
           filename: file,
-          displayErrors: true
+          displayErrors: true,
+          async resolveDynamicImport(specifier, scriptOrModule) {
+            const loader = await require('internal/process/esm_loader')
+              .loaderPromise;
+
+            const filename = scriptOrModule.filename;
+            const referrer = scriptOrModule.url ||
+              getURLFromFilePath(filename === 'repl' ?
+                path.join(process.cwd(), filename) : filename).href;
+            return loader.import(specifier, referrer);
+          },
         });
       } catch (e) {
         debug('parse error %j', code, e);