feat(consistent-list-newline): support if statement (#47)

Author: hyoban

src/rules/__snapshots__/consistent-list-newline.test.ts.snap

@@ -173,3 +173,13 @@ a,
 b
 ]) => {})"
 `;
+
+exports[`consistent-list-newline > invalid > Invalid #28: if (
+a) {} 1`] = `
+"if (
+a
+) {}"
+`;
+
+exports[`consistent-list-newline > invalid > Invalid #29: if (a
+) {} 1`] = `"if (a) {}"`;

src/rules/consistent-list-newline.test.ts

@@ -6,6 +6,8 @@ import { run } from './_test'
 import rule, { RULE_NAME } from './consistent-list-newline'
 
 const valids: ValidTestCase[] = [
+  'if (a) {}',
+  'if (\na\n) {}',
   'const a = { foo: "bar", bar: 2 }',
   'const a = {\nfoo: "bar",\nbar: 2\n}',
   'const a = [1, 2, 3]',
@@ -275,6 +277,8 @@ const invalid: InvalidTestCase[] = [
   'const {a,\nb\n} = c',
   'const [\na,b] = c',
   'foo(([\na,b]) => {})',
+  'if (\na) {}',
+  'if (a\n) {}',
 
   {
     description: 'CRLF',

src/rules/consistent-list-newline.ts

@@ -13,6 +13,7 @@ export type Options = [{
   ExportNamedDeclaration?: boolean
   FunctionDeclaration?: boolean
   FunctionExpression?: boolean
+  IfStatement?: boolean
   ImportDeclaration?: boolean
   JSONArrayExpression?: boolean
   JSONObjectExpression?: boolean
@@ -46,6 +47,7 @@ export default createEslintRule<Options, MessageIds>({
         ExportNamedDeclaration: { type: 'boolean' },
         FunctionDeclaration: { type: 'boolean' },
         FunctionExpression: { type: 'boolean' },
+        IfStatement: { type: 'boolean' },
         ImportDeclaration: { type: 'boolean' },
         JSONArrayExpression: { type: 'boolean' },
         JSONObjectExpression: { type: 'boolean' },
@@ -72,6 +74,7 @@ export default createEslintRule<Options, MessageIds>({
     const multilineNodes = new Set([
       'ArrayExpression',
       'FunctionDeclaration',
+      'IfStatement',
       'ObjectExpression',
       'ObjectPattern',
       'TSTypeLiteral',
@@ -262,6 +265,9 @@ export default createEslintRule<Options, MessageIds>({
           node.returnType || node.body,
         )
       },
+      IfStatement: (node) => {
+        check(node, [node.test])
+      },
       ArrowFunctionExpression: (node) => {
         if (node.params.length <= 1)
           return