fix(eslint-plugin): [padding-line-between-statements] make function overloading is also processed (#4345)

Author: lonyele

packages/eslint-plugin/src/rules/padding-line-between-statements.ts

@@ -803,7 +803,9 @@ export default util.createRule<Options, MessageIds>({
       ':statement': verify,
 
       SwitchCase: verifyThenEnterScope,
+      TSDeclareFunction: verifyThenEnterScope,
       'SwitchCase:exit': exitScope,
+      'TSDeclareFunction:exit': exitScope,
     };
   },
 });

packages/eslint-plugin/tests/rules/padding-line-between-statements.test.ts

@@ -2799,6 +2799,20 @@ var a = 1
         { blankLine: 'always', prev: 'block-like', next: 'block-like' },
       ],
     },
+    {
+      code: 'export function foo(arg1: string): number;\nexport function foo(arg2: number) {\n return arg2;\n}',
+      options: [
+        { blankLine: 'always', prev: '*', next: 'block-like' },
+        { blankLine: 'never', prev: '*', next: 'export' },
+      ],
+    },
+    {
+      code: 'function foo(arg1: string): number;\nfunction foo(arg2: number) {\n return arg2;\n}',
+      options: [
+        { blankLine: 'always', prev: '*', next: 'block-like' },
+        { blankLine: 'never', prev: '*', next: 'function' },
+      ],
+    },
   ],
   invalid: [
     //----------------------------------------------------------------------
@@ -5101,5 +5115,19 @@ declare namespace Types {
         { messageId: 'expectedBlankLine' },
       ],
     },
+    {
+      code: 'export function foo(arg1: string): number;\nexport function foo(arg2: number) {\n return arg2;\n}',
+      output:
+        'export function foo(arg1: string): number;\n\nexport function foo(arg2: number) {\n return arg2;\n}',
+      options: [{ blankLine: 'always', prev: '*', next: 'block-like' }],
+      errors: [{ messageId: 'expectedBlankLine' }],
+    },
+    {
+      code: 'function foo(arg1: string): number;\nfunction foo(arg2: number) {\n return arg2;\n}',
+      output:
+        'function foo(arg1: string): number;\n\nfunction foo(arg2: number) {\n return arg2;\n}',
+      options: [{ blankLine: 'always', prev: '*', next: 'block-like' }],
+      errors: [{ messageId: 'expectedBlankLine' }],
+    },
   ],
 });