fix: nullish init (#12)

VariableDeclarator.init will be null if this declarator isn't initialized. In particular, if the declarator hasn't been assigned by any value, the property init will be null. Thus, the pattern like const a will be failed.
We fix the issue by using ES6 optional chaining.

fix #11

Author: andykao1213

lib/rules/destructuring-formstate.js

@@ -42,8 +42,8 @@ module.exports = {
 
     function check(node) {
       if (
-        node.init.type === "CallExpression" &&
-        node.init.callee.name === "useForm"
+        node.init?.type === "CallExpression" &&
+        node.init?.callee.name === "useForm"
       ) {
         const formStateProperty = node.id.properties.find(
           (p) => p.key.name === "formState"
@@ -52,8 +52,8 @@ module.exports = {
         if (formStateProperty?.value.type !== "Identifier") return;
         checkIsAccessFormStateProperties(formStateProperty.value.name);
       } else if (
-        node.init.type === "CallExpression" &&
-        node.init.callee.name === "useFormState" &&
+        node.init?.type === "CallExpression" &&
+        node.init?.callee.name === "useFormState" &&
         node.id.type === "Identifier"
       ) {
         checkIsAccessFormStateProperties(node.id.name);

lib/rules/no-access-control.js

@@ -29,8 +29,8 @@ module.exports = {
 
     function check(node) {
       if (
-        node.init.type === "CallExpression" &&
-        node.init.callee.name === "useForm"
+        node.init?.type === "CallExpression" &&
+        node.init?.callee.name === "useForm"
       ) {
         const controlProperty = node.id.properties.find(
           (p) => p.key.name === "control"

lib/rules/no-nested-object-setvalue.js

@@ -42,8 +42,8 @@ module.exports = {
 
     function check(node) {
       if (
-        node.init.type === "CallExpression" &&
-        node.init.callee.name === "useForm"
+        node.init?.type === "CallExpression" &&
+        node.init?.callee.name === "useForm"
       ) {
         const setValueProperty = node.id.properties.find(
           (p) => p.key.name === "setValue"