fix(twig): encapsulate twig highlighter in a function

components/prism-twig.js

@@ -1,44 +1,46 @@
-Prism.languages.twig = {
-	'comment': /^\{#[\s\S]*?#\}$/,
-
-	'tag-name': {
-		pattern: /(^\{%-?\s*)\w+/,
-		lookbehind: true,
-		alias: 'keyword'
-	},
-	'delimiter': {
-		pattern: /^\{[{%]-?|-?[%}]\}$/,
-		alias: 'punctuation'
-	},
-
-	'string': {
-		pattern: /("|')(?:\\.|(?!\1)[^\\\r\n])*\1/,
-		inside: {
-			'punctuation': /^['"]|['"]$/
-		}
-	},
-	'keyword': /\b(?:even|if|odd)\b/,
-	'boolean': /\b(?:false|null|true)\b/,
-	'number': /\b0x[\dA-Fa-f]+|(?:\b\d+(?:\.\d*)?|\B\.\d+)(?:[Ee][-+]?\d+)?/,
-	'operator': [
-		{
-			pattern: /(\s)(?:and|b-and|b-or|b-xor|ends with|in|is|matches|not|or|same as|starts with)(?=\s)/,
-			lookbehind: true
-		},
-		/[=<>]=?|!=|\*\*?|\/\/?|\?:?|[-+~%|]/
-	],
-	'punctuation': /[()\[\]{}:.,]/
-};
-
-Prism.hooks.add('before-tokenize', function (env) {
-	if (env.language !== 'twig') {
-		return;
-	}
-
-	var pattern = /\{(?:#[\s\S]*?#|%[\s\S]*?%|\{[\s\S]*?\})\}/g;
-	Prism.languages['markup-templating'].buildPlaceholders(env, 'twig', pattern);
-});
-
-Prism.hooks.add('after-tokenize', function (env) {
-	Prism.languages['markup-templating'].tokenizePlaceholders(env, 'twig');
-});
+(function (Prism) {
+  Prism.languages.twig = {
+  	'comment': /^\{#[\s\S]*?#\}$/,
+
+  	'tag-name': {
+  		pattern: /(^\{%-?\s*)\w+/,
+  		lookbehind: true,
+  		alias: 'keyword'
+  	},
+  	'delimiter': {
+  		pattern: /^\{[{%]-?|-?[%}]\}$/,
+  		alias: 'punctuation'
+  	},
+
+  	'string': {
+  		pattern: /("|')(?:\\.|(?!\1)[^\\\r\n])*\1/,
+  		inside: {
+  			'punctuation': /^['"]|['"]$/
+  		}
+  	},
+  	'keyword': /\b(?:even|if|odd)\b/,
+  	'boolean': /\b(?:false|null|true)\b/,
+  	'number': /\b0x[\dA-Fa-f]+|(?:\b\d+(?:\.\d*)?|\B\.\d+)(?:[Ee][-+]?\d+)?/,
+  	'operator': [
+  		{
+  			pattern: /(\s)(?:and|b-and|b-or|b-xor|ends with|in|is|matches|not|or|same as|starts with)(?=\s)/,
+  			lookbehind: true
+  		},
+  		/[=<>]=?|!=|\*\*?|\/\/?|\?:?|[-+~%|]/
+  	],
+  	'punctuation': /[()\[\]{}:.,]/
+  };
+
+  Prism.hooks.add('before-tokenize', function (env) {
+  	if (env.language !== 'twig') {
+  		return;
+  	}
+
+  	var pattern = /\{(?:#[\s\S]*?#|%[\s\S]*?%|\{[\s\S]*?\})\}/g;
+  	Prism.languages['markup-templating'].buildPlaceholders(env, 'twig', pattern);
+  });
+
+  Prism.hooks.add('after-tokenize', function (env) {
+  	Prism.languages['markup-templating'].tokenizePlaceholders(env, 'twig');
+  });
+}(Prism));