drop!: vue demo rule

foo.js

@@ -1 +1,11 @@
 const foo = "baz123";
+
+/* ✓ GOOD */
+Vue.component("todo-item", {
+  // ...
+});
+
+/* ✗ BAD */
+Vue.component("Todo", {
+  // ...
+});

plugin.js

@@ -4,11 +4,12 @@ const RULE1_NAME = "first-rule";
 
 const rule = {
   create(context) {
+    console.log("GOGO", context);
     console.log("Hello from", `${PLUGIN_NAME}/${RULE1_NAME}`);
     context.report({
       span: {
-        start: 6,
+        start: 7,
-        end: 9,
+        end: 10,
       },
       message: "Error from " + `${PLUGIN_NAME}/${RULE1_NAME}`,
       data: {
@@ -64,6 +65,35 @@ export default {
   name: PLUGIN_NAME,
   rules: {
     [RULE1_NAME]: rule,
+    "vue/multi-word-component-names": {
+      create(context) {
+        return {
+          CallExpression(node) {
+            // Check for component name in `Vue.component("<name>", ...)`
+            if (
+              node.callee.type === "MemberExpression" &&
+              node.callee.object.type === "Identifier" &&
+              node.callee.object.value === "Vue" &&
+              node.callee.property.type === "Identifier" &&
+              node.callee.property.value === "component" &&
+              node.arguments.length > 0 &&
+              node.arguments[0].expression.type === "StringLiteral"
+            ) {
+              const name = node.arguments[0].expression.value;
+
+              const numUpper = name.length - name.replace(/[A-Z]/g, "").length;
+              if (!name.includes("-") || numUpper.length < 2) {
+                context.report({
+                  node: node.arguments[0].expression,
+                  message:
+                    `Component names must be composed of multiple words, but got "${name}"`,
+                });
+              }
+            }
+          },
+        };
+      },
+    },
   },
 };