perf: use URLSearchParams in the browser

License: MIT
Signed-off-by: Alan Shaw <alan.shaw@protocol.ai>

Author: Alan Shaw

package.json

@@ -18,7 +18,8 @@
     "glob": false,
     "fs": false,
     "stream": "readable-stream",
-    "./src/lib/configure.js": "./src/lib/configure.browser.js"
+    "./src/lib/configure.js": "./src/lib/configure.browser.js",
+    "./src/lib/querystring.js": "./src/lib/querystring.browser.js"
   },
   "repository": "github:ipfs/js-ipfs-http-client",
   "scripts": {

src/lib/querystring.browser.js

@@ -0,0 +1,23 @@
+'use strict'
+
+// Convert an object to a query string INCLUDING leading ?
+// Excludes null/undefined values
+exports.objectToQuery = obj => {
+  if (!obj) return ''
+
+  let qs = new URLSearchParams()
+
+  for (const [key, value] of Object.entries(obj)) {
+    if (value != null) {
+      if (Array.isArray(value)) {
+        value.forEach(v => qs.append(key, v))
+      } else {
+        qs.append(key, value)
+      }
+    }
+  }
+
+  qs = qs.toString()
+
+  return qs ? `?${qs}` : qs
+}