wip: modify the implementation to properly lint against and fix when more vars are declared on the same line and fix failing tests

Author: kresimir-coko

projects/eslint-plugin/rules/general/lib/rules/blank-line-declaration-usage.js

@@ -21,12 +21,20 @@ module.exports = {
 					return;
 				}
 
-				const {references} = context.getDeclaredVariables(node)[0];
+				const varsDeclaredOnLine = context.getDeclaredVariables(node);
 
-				const declarationLine = references[0].identifier.loc.start.line;
+				const declarationLine =
+					varsDeclaredOnLine[0].identifiers[0].loc.start.line;
 
-				references.slice(1).forEach((reference) => {
-					const referenceLine = reference.identifier.loc.start.line;
+				varsDeclaredOnLine.forEach((reference) => {
+					const varReference = reference.references[1];
+
+					if (varReference === undefined) {
+						return;
+					}
+
+					const referenceLine =
+						varReference.identifier.loc.start.line;
 
 					if (
 						sourceCode.lines
@@ -42,7 +50,7 @@ module.exports = {
 								}
 							},
 							message,
-							node: reference.identifier,
+							node: reference.references[1].identifier,
 						});
 					}
 				});

projects/eslint-plugin/rules/general/tests/lib/rules/blank-line-declaration-usage.js

@@ -121,20 +121,14 @@ ruleTester.run('blank-line-declaration-usage', rule, {
 					bar: 'foo',
 					life: 'ray',
 				}
-				
+
 				const {foo} = obj;
 
 				const length = foo.length;
 			`,
 		},
 		{
 			code: `
-				const obj = {
-					foo: 'bar',
-					bar: 'foo',
-					life: 'ray',
-				}
-
 				const {foo, bar, life} = obj;
 				const length = life.length;
 			`,
@@ -145,12 +139,6 @@ ruleTester.run('blank-line-declaration-usage', rule, {
 				},
 			],
 			output: `
-				const obj = {
-					foo: 'bar',
-					bar: 'foo',
-					life: 'ray',
-				}
-
 				const {foo, bar, life} = obj;
 
 				const length = life.length;
@@ -227,8 +215,8 @@ ruleTester.run('blank-line-declaration-usage', rule, {
 					bar: 'foo',
 					life: 'ray',
 				}
-				
-				Object.keys(obj)
+
+				Object.keys(obj).map(key => {});
 			`,
 		},
 		{
@@ -240,7 +228,7 @@ ruleTester.run('blank-line-declaration-usage', rule, {
 				}
 
 				const {foo} = obj;
-				
+
 				const length = foo.length;
 			`,
 		},