Refactored rules

rules/requires-first.js

@@ -0,0 +1,28 @@
+const util = require('./util');
+
+exports.rule = {
+  meta: {
+    docs: {
+      description: 'require that all goog.require() precede other statements (except goog.provide())'
+    }
+  },
+
+  create: function(context) {
+    return {
+      Program: function(program) {
+        let otherSeen = false;
+
+        program.body.forEach(statement => {
+          if (util.isRequireStatement(statement)) {
+            if (otherSeen) {
+              return context.report(statement, 'Expected goog.require() to precede other statements');
+            }
+          } else if (!util.isProvideStatement(statement)) {
+            otherSeen = true;
+          }
+        });
+
+      }
+    };
+  }
+};