✨ Added basic {{match}} helper

refs: https://github.com/TryGhost/Team/issues/759

- The match helper allows for basic equals and not equals comparisons,
Example:
  {{match title "=" "Getting Started"}}
  {{match slug "!=" "welcome"}}
- There's a lot more functionality we want to add here, so that it ends up being a replacement for {{#has}}
- However, this first iteration is already useful, especially in the context of custom theme settings
- Therefore we are adding it early, and will document it along with custom theme settings when that goes GA very soon

core/frontend/helpers/match.js

@@ -1,4 +1,3 @@
-const {labs} = require('../services/proxy');
 const {SafeString} = require('../services/rendering');
 
 const logging = require('@tryghost/logging');
@@ -53,7 +52,7 @@ const handleMatch = (data, operator, value) => {
     return result;
 };
 
-function match(...attrs) {
+module.exports = function match(...attrs) {
     // options = options || {};
     // options.hash = options.hash || {};
     // options.data = options.data || {};
@@ -101,18 +100,4 @@ function match(...attrs) {
 
     // Else return the result as a SafeString Eg.{string: false} || {string: true}
     return new SafeString(result);
-}
-
-module.exports = function matchLabsWrapper() {
-    let self = this;
-    let args = arguments;
-
-    return labs.enabledHelper({
-        flagKey: 'matchHelper',
-        flagName: 'Match helper',
-        helperName: 'match',
-        helpUrl: 'https://ghost.org/docs/themes/'
-    }, () => {
-        return match.apply(self, args);
-    });
 };

core/shared/labs.js

@@ -18,7 +18,6 @@ const messages = {
 //       input for the "labs" setting value
 const BETA_FEATURES = [
     'activitypub',
-    'matchHelper',
     'multipleProducts'
 ];
 

test/unit/frontend/helpers/match.test.js

@@ -17,10 +17,6 @@ describe('Match helper', function () {
         sinon.restore();
     });
 
-    beforeEach(function () {
-        sinon.stub(labs, 'isSet').returns(true);
-    });
-
     function shouldCompileToExpected(templateString, hash, expected) {
         const template = handlebars.compile(templateString);
         const result = template(hash);