Add jsonschema Schema declaration

src/globals.d.ts

@@ -26,6 +26,54 @@ declare namespace Chai {
 }
 /* tslint:enable */
 
+// jsonschema declarations
+declare interface Schema {
+    id?: string;
+    $schema?: string;
+    title?: string;
+    description?: string;
+    multipleOf?: number;
+    maximum?: number;
+    exclusiveMaximum?: boolean;
+    minimum?: number;
+    exclusiveMinimum?: boolean;
+    maxLength?: number;
+    minLength?: number;
+    pattern?: string;
+    additionalItems?: boolean | Schema;
+    items?: Schema | Schema[];
+    maxItems?: number;
+    minItems?: number;
+    uniqueItems?: boolean;
+    maxProperties?: number;
+    minProperties?: number;
+    required?: string[];
+    additionalProperties?: boolean | Schema;
+    definitions?: {
+        [name: string]: Schema;
+    };
+    properties?: {
+        [name: string]: Schema;
+    };
+    patternProperties?: {
+        [name: string]: Schema;
+    };
+    dependencies?: {
+        [name: string]: Schema | string[];
+    };
+    'enum'?: any[];
+    type?: string | string[];
+    allOf?: Schema[];
+    anyOf?: Schema[];
+    oneOf?: Schema[];
+    not?: Schema;
+    // This is the only property that's not defined in https://github.com/tdegrunt/jsonschema/blob/master/lib/index.d.ts
+    // There is an open issue for that: https://github.com/tdegrunt/jsonschema/issues/194
+    // There is also an opened PR: https://github.com/tdegrunt/jsonschema/pull/218/files
+    // As soon as it gets merged we should be good to use types from 'jsonschema' package
+    $ref?: string;
+}
+
 declare module '*.json' {
     const json: any;
     /* tslint:disable */