create new json-to-go-v2 using named parameters

Author: grische

Diff for: json-to-go.js renamed to json-to-go-v2.js

@@ -1,14 +1,18 @@
 /*
-	JSON-to-Go
+	JSON-to-Go v2
 	by Matt Holt
 
 	https://github.com/mholt/json-to-go
 
 	A simple utility to translate JSON into a Go type definition.
 */
 
-function jsonToGo(json, typename, flatten = true, example = false, allOmitempty = false)
-{
+function jsonToGo(json, options = {}) {
+	const typename = options.typename === undefined || typeof options.typename !== "string" ? "AutoGenerated" : options.typename
+	const flatten = options.flatten === undefined ? true : options.flatten
+	const example = options.example === undefined ? false : options.example
+	const allOmitempty = options.allOmitempty === undefined ? false : options.allOmitempty
+
 	let data;
 	let scope;
 	let go = "";
@@ -35,8 +39,7 @@ function jsonToGo(json, typename, flatten = true, example = false, allOmitempty
 		};
 	}
 
-	typename = format(typename || "AutoGenerated");
-	append(`type ${typename} `);
+	append(`type ${format(typename)} `);
 
 	parseScope(scope);
 
@@ -528,7 +531,6 @@ if (typeof module != 'undefined') {
 			const fs = require('fs');
 			const json = fs.readFileSync(filename, 'utf8');
 			jsonToGoWithErrorHandling(json)
-			return
 		}
 
 		if (!filename) {
@@ -540,7 +542,6 @@ if (typeof module != 'undefined') {
 				const json = Buffer.concat(bufs).toString('utf8')
 				jsonToGoWithErrorHandling(json)
 			})
-			return
 		}
 	} else {
 		module.exports = jsonToGo