Updating js plugins

public/plugins/mustache/test/helper.js

@@ -0,0 +1,18 @@
+var chai = require('chai');
+var isRunningInNode = process !== undefined && process.versions.node !== undefined;
+
+if (isRunningInNode) {
+  var nodejsMajorVersion = Number(process.versions.node.split('.')[0]);
+  isLegacyNodeVersion = !(nodejsMajorVersion >= 10);
+
+  if (!isLegacyNodeVersion) {
+    // The `zuul` package we use to run tests in browsers via Saucelabs eagerly loads all
+    // packages it sees being used via `require()`. Because we don't want the `esm` package
+    // to be loaded when running browser tests, we refer to `require()` via `module.require()`
+    // because that avoid the mentioned eager loading
+    module.require = module.require('esm')(module);
+  }
+}
+assert = chai.assert;
+chai.should();
+Mustache = require('../mustache');