improved indentations support

Author: valadas

packages/stencil-library/eslint-plugin/src/rules/no-label-slot-in-checkbox.test.ts

@@ -27,14 +27,18 @@ ruleTester.run("no-label-slot-in-checkbox", rule, {
     ],
     invalid: [
         {
-            code: "<dnn-checkbox onClick={e => console.log(e)}>Something</dnn-checkbox>",
+            code: [
+                "<dnn-checkbox onClick={e => console.log(e)}>",
+                "  Something",
+                "</dnn-checkbox>",
+            ].join("\n"),
             languageOptions: jsxParserOptions,
             errors: [{ messageId: "noLabelSlotInCheckbox" }],
             output: [
                 "<label>",
                 "  <dnn-checkbox onClick={e => console.log(e)} />",
                 "  Something",
-                "</label>"
+                "</label>",
             ].join("\n"),
         },
     ],

packages/stencil-library/eslint-plugin/src/rules/no-label-slot-in-checkbox.ts

@@ -33,15 +33,16 @@ export const rule = createRule({
                             node,
                             messageId: "noLabelSlotInCheckbox",
                             fix: fixer => {
-                                const sourceCode = context.getSourceCode();
+                                const sourceCode = context.sourceCode;
                                 const checkboxText = sourceCode.getText(node.openingElement);
                                 const selfClosing = checkboxText.replace(/>$/, " />");
                                 const innerContent = node.children.map(child => sourceCode.getText(child)).join("").trim();
 
                                 // Detect leading indentation of the node
-                                const lines = sourceCode.getText(node).split("\n");
-                                const firstLine = lines[0];
-                                const indentMatch = firstLine.match(/^(\s*)/);
+                                const parent = node.parent;
+                                const parentLine = parent ? context.sourceCode.getLocFromIndex(parent.range[0]).line : node.loc.start.line;
+                                const baseLineText = context.sourceCode.lines[parentLine - 1];
+                                const indentMatch = baseLineText.match(/^(\s*)/);
                                 const indent = indentMatch?.[1] ?? "";
 
                                 // Build replacement with proper indentation