Fix unexpected output in Node.js API lint result when any rule contains disableFix: true

.changeset/lemon-cheetahs-complain.md

@@ -0,0 +1,5 @@
+---
+"stylelint": patch
+---
+
+Fixed: unexpected `output` in Node.js API lint result when any rule contains `disableFix: true`

lib/__tests__/standalone-fix.test.js

@@ -1,7 +1,7 @@
 'use strict';
 
 const path = require('path');
-const { stripIndent } = require('common-tags');
+const { stripIndent, stripIndents } = require('common-tags');
 const fs = require('fs').promises;
 
 const removeFile = require('../testUtils/removeFile');
@@ -246,7 +246,8 @@ it('one rule being disabled', async () => {
 		fix: true,
 	});
 
-	expect(JSON.parse(result.output)[0].errored).toBe(true);
+	expect(result.results[0].errored).toBe(true);
+	expect(result.output).toBe(code);
 });
 
 it('two rules being disabled', async () => {
@@ -276,18 +277,20 @@ it('two rules being disabled', async () => {
 		fix: true,
 	});
 
-	const warnings = JSON.parse(result.output)[0].warnings;
+	const warnings = result.results[0].warnings;
 
 	expect(warnings.some((w) => w.text === 'Expected indentation of 0 spaces (indentation)')).toBe(
 		true,
 	);
 	expect(warnings.some((w) => w.text === 'Expected "COLOR" to be "color" (property-case)')).toBe(
 		true,
 	);
+	expect(result.output).toBe(code);
 });
 
 it('one rule being disabled and another still autofixing', async () => {
-	const code = `
+	// use stripIndent to remove first linebreak that is also removed in the stripIndents expect
+	const code = stripIndent`
 		a {
 			COLOR: red;
 		}`;
@@ -296,24 +299,25 @@ it('one rule being disabled and another still autofixing', async () => {
 		code,
 		config: {
 			rules: {
-				indentation: [
-					2,
+				indentation: [0],
+				'property-case': [
+					'lower',
 					{
 						disableFix: true,
 					},
 				],
-				'property-case': ['lower'],
 			},
 		},
 		fix: true,
 	});
 
-	const warnings = JSON.parse(result.output)[0].warnings;
+	const warnings = result.results[0].warnings;
 
 	expect(warnings.some((w) => w.text === 'Expected indentation of 0 spaces (indentation)')).toBe(
-		true,
+		false,
 	);
 	expect(warnings.some((w) => w.text === 'Expected "COLOR" to be "color" (property-case)')).toBe(
-		false,
+		true,
 	);
+	expect(result.output).toBe(stripIndents(code));
 });

lib/lintPostcssResult.js

@@ -91,10 +91,6 @@ function lintPostcssResult(stylelintOptions, postcssResult, config) {
 		// disableFix in secondary option
 		const disableFix = (secondaryOptions && secondaryOptions.disableFix === true) || false;
 
-		if (disableFix) {
-			postcssResult.stylelint.ruleDisableFix = true;
-		}
-
 		postcssResult.stylelint.ruleSeverities[ruleName] =
 			(secondaryOptions && secondaryOptions.severity) || defaultSeverity;
 		postcssResult.stylelint.customMessages[ruleName] = secondaryOptions && secondaryOptions.message;

lib/standalone.js

@@ -139,12 +139,7 @@ async function standalone({
 		const postcssResult = stylelintResult._postcssResult;
 		const returnValue = prepareReturnValue([stylelintResult], maxWarnings, formatterFunction, cwd);
 
-		if (
-			fix &&
-			postcssResult &&
-			!postcssResult.stylelint.ignored &&
-			!postcssResult.stylelint.ruleDisableFix
-		) {
+		if (fix && postcssResult && !postcssResult.stylelint.ignored) {
 			returnValue.output =
 				!postcssResult.stylelint.disableWritingFix && postcssResult.opts
 					? // If we're fixing, the output should be the fixed code

types/stylelint/index.d.ts

@@ -110,7 +110,6 @@ declare module 'stylelint' {
 			stylelintWarning?: boolean;
 			disableWritingFix?: boolean;
 			config?: Config;
-			ruleDisableFix?: boolean;
 		};
 
 		type EmptyResult = {