util: add handlebars render helper

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

__tests__/util.test.ts

@@ -392,6 +392,20 @@ describe('generateRandomString', () => {
   });
 });
 
+describe('compileHandlebars', () => {
+  it('renders the template with the meta context and compile options', () => {
+    const rendered = Util.compileHandlebars(
+      '{{name}} {{{raw}}}',
+      {noEscape: true},
+      {
+        name: 'docker',
+        raw: '<strong>actions-toolkit</strong>'
+      }
+    );
+    expect(rendered).toBe('docker <strong>actions-toolkit</strong>');
+  });
+});
+
 describe('stringToUnicodeEntities', () => {
   it('should convert a string to Unicode entities', () => {
     const input = 'Hello, World!';

src/util.ts

@@ -17,6 +17,7 @@
 import crypto from 'crypto';
 import fs from 'fs';
 import path from 'path';
+import * as handlebars from 'handlebars';
 import * as core from '@actions/core';
 import * as io from '@actions/io';
 import {parse} from 'csv-parse/sync';
@@ -202,6 +203,10 @@ export class Util {
     return bytes.toString('hex').slice(0, length);
   }
 
+  public static compileHandlebars(value: string, options: Parameters<typeof handlebars.compile>[1], data: unknown): string {
+    return handlebars.compile(value, options)(data);
+  }
+
   public static stringToUnicodeEntities(str: string) {
     return Array.from(str)
       .map(char => `&#x${char.charCodeAt(0).toString(16)};`)