Update jsonata.d.ts

Author: OpportunityLiu

jsonata.d.ts

@@ -1,20 +1,40 @@
-// Type definitions for jsonata 1.4
+// Type definitions for jsonata 1.7
 // Project: https://github.com/jsonata-js/jsonata
 // Definitions by: Nick <https://github.com/nick121212> and Michael M. Tiller <https://github.com/xogeny>
 
 declare function jsonata(str: string): jsonata.Expression;
 declare namespace jsonata {
+
   interface ExprNode {
-      type: string;
-      value: any;
-      position: number;
+    type: string;
+    value: any;
+    position: number;
+  }
+
+  interface JsonataError extends Error {
+    code: string;
+    position: number;
+    token: string;
+  }
+
+  interface Environment {
+    bind(name: string, value: any): void;
+    lookup(name: string): any;
+    readonly timestamp: Date;
+    readonly async: boolean;
+  }
+
+  interface Focus {
+    readonly environment: Environment;
+    readonly input: any;
   }
   interface Expression {
-    evaluate(input: any, bindings?: { [name: string]: any }, callback?: (err: Error, resp: any) => void): any;
+    evaluate(input: any, bindings?: Record<string, any>): any;
+    evaluate(input: any, bindings: Record<string, any> | undefined, callback: (err: JsonataError, resp: any) => void): void;
     assign(name: string, value: any): void;
-    registerFunction(name: string, f: Function, signature?: string): void;
+    registerFunction(name: string, implementation: (this: Focus, ...args: any[]) => any, signature?: string): void;
     ast(): ExprNode;
   }
 }
 
-export = jsonata;
+export = jsonata;