1 files changed, 70 insertions, 0 deletions
diff --git a/lib/helpers/buildURL.js b/lib/helpers/buildURL.js
new file mode 100644
index 0000000..31595c3
--- /dev/null
+++ b/lib/helpers/buildURL.js
@@ -0,0 +1,70 @@
+'use strict';
+
+var utils = require('./../utils');
+
+function encode(val) {
+  return encodeURIComponent(val).
+    replace(/%3A/gi, ':').
+    replace(/%24/g, '$').
+    replace(/%2C/gi, ',').
+    replace(/%20/g, '+').
+    replace(/%5B/gi, '[').
+    replace(/%5D/gi, ']');
+}
+
+/**
+ * Build a URL by appending params to the end
+ *
+ * @param {string} url The base of the url (e.g., http://www.google.com)
+ * @param {object} [params] The params to be appended
+ * @returns {string} The formatted url
+ */
+module.exports = function buildURL(url, params, paramsSerializer) {
+  /*eslint no-param-reassign:0*/
+  if (!params) {
+    return url;
+  }
+
+  var serializedParams;
+  if (paramsSerializer) {
+    serializedParams = paramsSerializer(params);
+  } else if (utils.isURLSearchParams(params)) {
+    serializedParams = params.toString();
+  } else {
+    var parts = [];
+
+    utils.forEach(params, function serialize(val, key) {
+      if (val === null || typeof val === 'undefined') {
+        return;
+      }
+
+      if (utils.isArray(val)) {
+        key = key + '[]';
+      } else {
+        val = [val];
+      }
+
+      utils.forEach(val, function parseValue(v) {
+        if (utils.isDate(v)) {
+          v = v.toISOString();
+        } else if (utils.isObject(v)) {
+          v = JSON.stringify(v);
+        }
+        parts.push(encode(key) + '=' + encode(v));
+      });
+    });
+
+    serializedParams = parts.join('&');
+  }
+
+  if (serializedParams) {
+    var hashmarkIndex = url.indexOf('#');
+    if (hashmarkIndex !== -1) {
+      url = url.slice(0, hashmarkIndex);
+    }
+
+    url += (url.indexOf('?') === -1 ? '?' : '&') + serializedParams;
+  }
+
+  return url;
+};