add TextDecorationType

Author: strausr

__TESTS__/unit/values/TextStyle/TextStyle.test.ts

@@ -42,9 +42,10 @@ describe('Text Style tests', () => {
       .fontAntialias("good")
       .fontWeight("bold")
       .fontStyle("italic")
+      .textDecoration("strikethrough")
       .textAlignment("center")
       .toString();
-    expect(res).toBe('arial_50_bold_italic_center_antialias_good');
+    expect(res).toBe('arial_50_bold_italic_strikethrough_center_antialias_good');
   });
 
   it('Create a new instance with stroke solid', () => {

src/qualifiers/textStyle.ts

@@ -2,7 +2,7 @@ import {normal as normalFontWeight} from "./fontWeight";
 import {normal as normalFontStyle} from "./fontStyle";
 import {normal as normalTextDecoration} from "./textDecoration";
 import {serializeCloudinaryCharacters} from "../internal/utils/serializeCloudinaryCharacters";
-import {FontAntialiasType, FontWeightType, TextAlignmentType} from "../types/types";
+import {FontAntialiasType, FontWeightType, TextAlignmentType, TextDecorationType} from "../types/types";
 
 /**
  * @summary qualifier
@@ -110,9 +110,9 @@ class TextStyle {
 
   /**
    *
-   * @param {string} textDecoration The font decoration type.
+   * @param {TextDecorationType|string} textDecoration The font decoration type.
    */
-  textDecoration(textDecoration: 'normal' | 'underline' | 'strikethrough' | string): this {
+  textDecoration(textDecoration: TextDecorationType | string): this {
     this._textDecoration = textDecoration;
     return this;
   }

src/types/types.ts

@@ -297,6 +297,11 @@ export type TextAlignmentType =
   'start' |
   'justify';
 
+export type TextDecorationType =
+  'normal' |
+  'underline' |
+  'strikethrough';
+
 export type GradientDirectionType =
   "horizontal"|
   "vertical"|