diff --git a/types/papaparse/index.d.ts b/types/papaparse/index.d.ts
index 76f7c224b3..35353f3aba 100644
--- a/types/papaparse/index.d.ts
+++ b/types/papaparse/index.d.ts
@@ -1,6 +1,6 @@
 // Type definitions for PapaParse v4.1
 // Project: https://github.com/mholt/PapaParse
-// Definitions by: Pedro Flemming <https://github.com/torpedro>
+// Definitions by: Pedro Flemming <https://github.com/torpedro>, Rain Shen <https://github.com/rainshen49>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 declare namespace PapaParse {
diff --git a/types/papaparse/papaparse-tests.ts b/types/papaparse/papaparse-tests.ts
index 32de7e109f..a432fc7f09 100644
--- a/types/papaparse/papaparse-tests.ts
+++ b/types/papaparse/papaparse-tests.ts
@@ -13,7 +13,7 @@ Papa.parse("3,3,3", {
 	delimiter: ';',
 	comments: false,
 
-	step: function(results, p) {
+	step: function (results, p) {
 		p.abort();
 		results.data.length;
 	}
@@ -22,7 +22,7 @@ Papa.parse("3,3,3", {
 var file = new File(null, null, null);
 
 Papa.parse(file, {
-	complete: function(a, b) {
+	complete: function (a, b) {
 		a.meta.fields;
 		b.name;
 	}
@@ -31,13 +31,19 @@ Papa.parse(file, {
 /**
  * Unparsing
  */
-Papa.unparse([{a: 1, b: 1, c: 1}]);
+Papa.unparse([{ a: 1, b: 1, c: 1 }]);
 Papa.unparse([[1, 2, 3], [4, 5, 6]]);
 Papa.unparse({
 	fields: ["3"],
 	data: []
 });
 
+Papa.unparse([{ a: 1, b: 1, c: 1 }], { quotes: false });
+Papa.unparse([[1, 2, 3], [4, 5, 6]], { delimiter: "," });
+Papa.unparse({
+	fields: ["3"],
+	data: []
+}, { newline: "\n" });
 
 
 /**