Add handlebars (startsWith, endsWith, match)

CHANGELOG.md

@@ -7,6 +7,7 @@
 - Add ESLint deprecation check (#203)
 - Add custom code option which is called after content is ready (#231)
 - Add option to enabled/disable wrapping to support empty lines in HTML (#235)
+- Add handlebars (startsWith, endsWith, match) (#211)
 
 ## 4.1.0 (2023-07-16)
 

src/helpers/handlebars.test.ts

@@ -43,6 +43,33 @@ describe('Handlebars helpers', () => {
       expect(handler(['hello', 'world'], 'hello1')).toBeFalsy();
     });
 
+    it('StartsWith', () => {
+      const handler = handlebarsMock.getHelper('startsWith');
+
+      expect(handler).toBeDefined();
+
+      expect(handler('hello world', 'hello')).toBeTruthy();
+      expect(handler('hello world', 'bye')).toBeFalsy();
+    });
+
+    it('EndsWith', () => {
+      const handler = handlebarsMock.getHelper('endsWith');
+
+      expect(handler).toBeDefined();
+
+      expect(handler('hello world', 'world')).toBeTruthy();
+      expect(handler('hello world', 'planet')).toBeFalsy();
+    });
+
+    it('Match', () => {
+      const handler = handlebarsMock.getHelper('match');
+
+      expect(handler).toBeDefined();
+
+      expect(handler('This is a cool plugin.', /(cool)\s(plugin)/)).toBeTruthy();
+      expect(handler('This is a cool plugin.', /^This is a plugin$/)).toBeFalsy();
+    });
+
     it('Date', () => {
       const handler = handlebarsMock.getHelper('date');
 

src/helpers/handlebars.ts

@@ -28,6 +28,21 @@ export const registerHelpers = (handlebars: any) => {
    */
   handlebars.registerHelper('contains', (arr: string[], value: string): boolean => arr.indexOf(value) !== -1);
 
+  /**
+   * startsWith
+   */
+  handlebars.registerHelper('startsWith', (left: string, right: string): boolean => left.startsWith(right));
+
+  /**
+   * endsWith
+   */
+  handlebars.registerHelper('endsWith', (left: string, right: string): boolean => left.endsWith(right));
+
+  /**
+   * match
+   */
+  handlebars.registerHelper('match', (left: string, right: string): boolean => left.match(right) !== null);
+
   /**
    * Date
    */