From 3c059a573c5147fa1c2df9e828334b0ffdb09336 Mon Sep 17 00:00:00 2001
From: Tony Garnock-Jones <tonyg@leastfixedpoint.com>
Date: Wed, 5 Aug 2020 12:47:27 +0200
Subject: [PATCH] Browser doesn't have util

---
 implementations/javascript/package.json  |  2 +-
 implementations/javascript/src/values.js | 10 ++++++----
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/implementations/javascript/package.json b/implementations/javascript/package.json
index 9099956..72d82d9 100644
--- a/implementations/javascript/package.json
+++ b/implementations/javascript/package.json
@@ -1,6 +1,6 @@
 {
   "name": "preserves",
-  "version": "0.3.0",
+  "version": "0.3.1",
   "description": "Experimental data serialization format",
   "homepage": "https://gitlab.com/preserves/preserves",
   "license": "Apache-2.0",
diff --git a/implementations/javascript/src/values.js b/implementations/javascript/src/values.js
index b361647..f524548 100644
--- a/implementations/javascript/src/values.js
+++ b/implementations/javascript/src/values.js
@@ -257,9 +257,11 @@ Bytes.prototype.toString = function () {
   return '#"' + this.__asciify() + '"';
 };
 
-Bytes.prototype[util.inspect.custom] = function (depth, options) {
-  return this.toString();
-};
+if (util.inspect) {
+  Bytes.prototype[util.inspect.custom] = function (depth, options) {
+    return this.toString();
+  };
+}
 
 Bytes.prototype.__asciify = function () {
   const pieces = [];
@@ -356,7 +358,7 @@ Record.prototype.toString = function () {
       try {
         return "" + f;
       } catch (e) {
-        return util.inspect(f);
+        return (util.inspect || ((f) => '<unprintable_preserves_field_value>'))(f);
       }
     }).join(', ') + ')';
 };