Added fix for basic relative URLs and support variables in servers URLs

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Master
 
+# 2.0.5 - 4 March, 2021
+### Improvements
+- Added support for relative URLs and variables in servers #59
+
 # 2.0.4 - 26 Nov, 2020
 ### Improvements
 - Nullable is now fully supported

src/index.js

@@ -31,14 +31,29 @@ function buildSchemaSync(pathOrSchema, options) {
     return buildValidations(jsonSchema, dereferencedSchema, options);
 }
 
+function getBasePaths(dereferenced) {
+    return dereferenced.servers && dereferenced.servers.length
+        ? dereferenced.servers.map(({ url, variables = {} }) => {
+        // replace variables with deafault values
+            Object.keys(variables).forEach((key) => {
+                url = url.replace(new RegExp(`{${key}}`), variables[key].default);
+            });
+
+            // replace leading '//' with 'http://' (in cases such as //api.example.com)
+            url = url.replace(/^\/\//, 'http://');
+
+            // return base path
+            return (/\/\//.test(url)) ? new URL(url).pathname : url;
+        })
+        : [dereferenced.basePath || '/'];
+}
+
 function buildValidations(referenced, dereferenced, receivedOptions) {
     const options = getOptions(receivedOptions);
 
     const schemas = {};
 
-    const basePaths = dereferenced.servers && dereferenced.servers.length
-        ? dereferenced.servers.map(({ url }) => new URL(url).pathname)
-        : [dereferenced.basePath || '/'];
+    const basePaths = getBasePaths(dereferenced);
 
     Object.keys(dereferenced.paths).forEach(currentPath => {
         const operationSchemas = {};

test/openapi3/general/pets-general.yaml

@@ -84,6 +84,20 @@ paths:
 servers:
 - url: http://petstore.swagger.io
 - url: http://petstore.swagger.io/staging/
+- url: /staging
+- url: '{protocol}://petstore.swagger.io/{env}'
+  variables:
+    protocol:
+      enum:
+        - http
+        - https
+      default: http
+    env:
+      enum:
+        - staging
+        - ''
+      default: staging
+- url: //petstore.swagger.io
 components:
   schemas:
     Error: