add support to jsx and tsx

src/index.js

@@ -11,7 +11,7 @@ module.exports = (config, env, helpers, params = defaultParams) => {
 
   const purgecss = require("@fullhuman/postcss-purgecss")({
     // Specify the paths to all of the template files in your project
-    content: ["./src/**/*.js"],
+    content: ["./src/**/*.tsx", "./src/**/*.js", "./src/**/*.jsx"],
 
     // Include any special characters you're using in this regular expression
     defaultExtractor: content => content.match(params.regex) || [],