fix(ui): restore highlight modal toggle event & add dom test suite (v1.4.17)

syntax_check.js

@@ -0,0 +1,17 @@
+const fs = require('fs');
+const jsCode = fs.readFileSync('kantine.js', 'utf8')
+    .replace('(function () {', '')
+    .replace('})();', '')
+    .replace('if (window.__KANTINE_LOADED) return;', '');
+const testCode = `
+    console.log("TEST");
+`;
+const code = jsCode + '\n' + testCode;
+try {
+    const vm = require('vm');
+    new vm.Script(code);
+} catch (e) {
+    if(e.stack) {
+       console.log("Syntax error at:", e.stack.split('\n').slice(0,3).join('\n'));
+    }
+}