fix: v5 compatibility mode when draft-06 meta schema is absent

keywords/_util.js

@@ -0,0 +1,15 @@
+'use strict';
+
+module.exports = {
+  metaSchemaRef: metaSchemaRef
+};
+
+var META_SCHEMA_ID = 'http://json-schema.org/draft-06/schema';
+
+function metaSchemaRef(ajv) {
+  var defaultMeta = ajv._opts.defaultMeta;
+  if (typeof defaultMeta == 'string') return { $ref: defaultMeta };
+  if (ajv.getSchema(META_SCHEMA_ID)) return { $ref: META_SCHEMA_ID };
+  console.warn('meta schema not defined');
+  return {};
+}

keywords/deepProperties.js

@@ -1,5 +1,7 @@
 'use strict';
 
+var util = require('./_util');
+
 module.exports = function defFunc(ajv) {
   defFunc.definition = {
     type: 'object',
@@ -12,9 +14,7 @@ module.exports = function defFunc(ajv) {
     metaSchema: {
       type: 'object',
       patternProperties: {
-        '^(\\/([^~\\/]|~0|~1)*)*(\\/)?$': {
-          $ref: 'http://json-schema.org/draft-06/schema#'
-        }
+        '^(\\/([^~\\/]|~0|~1)*)*(\\/)?$': util.metaSchemaRef(ajv)
       },
       additionalProperties: false
     }

keywords/switch.js

@@ -1,9 +1,11 @@
 'use strict';
 
+var util = require('./_util');
+
 module.exports = function defFunc(ajv) {
   if (ajv.RULES.keywords.switch && ajv.RULES.keywords.if) return;
 
-  var metaSchemaUri = 'http://json-schema.org/draft-06/schema#';
+  var metaSchemaRef = util.metaSchemaRef(ajv);
 
   defFunc.definition = {
     inline: require('./dotjs/switch'),
@@ -14,11 +16,11 @@ module.exports = function defFunc(ajv) {
       items: {
         required: [ 'then' ],
         properties: {
-          'if': { $ref: metaSchemaUri },
+          'if': metaSchemaRef,
           'then': {
             anyOf: [
               { type: 'boolean' },
-              { $ref: metaSchemaUri }
+              metaSchemaRef
             ]
           },
           'continue': { type: 'boolean' }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ajv-keywords",
-  "version": "2.0.0-beta.0",
+  "version": "2.0.0-beta.1",
   "description": "Custom JSON-Schema keywords for Ajv validator",
   "main": "index.js",
   "scripts": {

spec/schema-tests.spec.js

@@ -9,7 +9,9 @@ var ajvs = [
     ['switch', 'patternRequired', 'formatMinimum', 'formatMaximum',
      'if', 'prohibited', 'deepRequired', 'deepProperties']),
   defineKeywords(getAjv()),
-  defineKeywords(getAjv(true))
+  defineKeywords(getAjv(true)),
+  defineKeywords(getAjvNoMeta()),
+  defineKeywords(getAjvV5())
 ];
 
 
@@ -33,3 +35,31 @@ function getAjv(extras) {
     unknownFormats: ['allowedUnknown']
   });
 }
+
+
+function getAjvNoMeta() {
+  return new Ajv({
+    $data: true,
+    unknownFormats: ['allowedUnknown'],
+    meta: false,
+    validateSchema: false
+  });
+}
+
+
+function getAjvV5() {
+  var ajv = new Ajv({
+    $data: true,
+    meta: false,
+    unknownFormats: 'ignore'
+  });
+
+  ajv.addMetaSchema(require('ajv/lib/refs/json-schema-draft-04.json'));
+
+  var metaSchema = require('ajv/lib/refs/json-schema-v5.json');
+  ajv.addMetaSchema(metaSchema);
+  ajv._opts.defaultMeta = metaSchema.id;
+
+  ajv.removeKeyword('propertyNames');
+  return ajv;
+}