feat: add schema name to error (#140)

* feat: add schema name to error

Closes #139

* test: add invalid schema key test

Author: SkeLLLa

index.js

@@ -934,7 +934,12 @@ function loadUglify () {
 function isValidSchema (schema, externalSchema) {
   if (externalSchema) {
     Object.keys(externalSchema).forEach(key => {
-      ajv.addSchema(externalSchema[key], key)
+      try {
+        ajv.addSchema(externalSchema[key], key)
+      } catch (err) {
+        err.message = '"' + key + '" ' + err.message
+        throw err
+      }
     })
   }
   ajv.compile(schema)

test/invalidSchema.test.js

@@ -0,0 +1,22 @@
+'use strict'
+
+const test = require('tap').test
+const build = require('..')
+
+// Covers issue #139
+test('Should throw on invalid schema', t => {
+  t.plan(2)
+  try {
+    build({}, {
+      schema: {
+        invalid: {
+          type: 'Dinosaur'
+        }
+      }
+    })
+    t.fail('should be an invalid schema')
+  } catch (err) {
+    t.match(err.message, /^"invalid" schema is invalid:.*/, 'Schema contains invalid key')
+    t.ok(err)
+  }
+})