fix: error gracefully when .editorconfig parsing fails (#18541)

lib/util/json-writer/__fixtures__/.customer_file

+#
+# .editorconfig
+#
+# http://editorconfig.org
+#
+# The EditorConfig project consists of a file format for defining coding styles
+# and a collection of text editor plugins that enable editors to read the file
+# format and adhere to defined styles.
+#
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+indent_style = space
+indent_size = 4
+insert_final_newline = true
+
+# package.json specific rules
+[package.json]
+indent_size = 2
+
+# .yml specific rules
+[*.yml]
+indent_size = 2

lib/util/json-writer/editor-config.spec.ts

@@ -51,6 +51,18 @@ describe('util/json-writer/editor-config', () => {
     expect(format.indentationType).toBe(IndentationType.Space);
   });
 
+  // temporary ignoring error https://github.com/renovatebot/renovate/issues/18540
+  it('should temporary give undefined until its fixed on the library', async () => {
+    expect.assertions(2);
+    Fixtures.mock({
+      '.editorconfig': Fixtures.get('.customer_file'),
+    });
+    const format = await EditorConfig.getCodeFormat(defaultConfigFile);
+
+    expect(format.indentationSize).toBeUndefined();
+    expect(format.indentationType).toBeUndefined();
+  });
+
   it('should not handle non json config from .editorconfig', async () => {
     expect.assertions(2);
     Fixtures.mock({

lib/util/json-writer/editor-config.ts

 import { KnownProps, parse } from 'editorconfig';
 import upath from 'upath';
 import { GlobalConfig } from '../../config/global';
+import { logger } from '../../logger';
 import type { CodeFormat } from './code-format';
 import { IndentationType } from './indentation-type';
 
 export class EditorConfig {
   public static async getCodeFormat(fileName: string): Promise<CodeFormat> {
     const { localDir } = GlobalConfig.get();
+    try {
       const knownProps = await parse(upath.join(localDir, fileName));
-
       return {
         indentationSize: EditorConfig.getIndentationSize(knownProps),
         indentationType: EditorConfig.getIndentationType(knownProps),
       };
+    } catch (err) {
+      logger.warn({ err }, 'Failed to parse editor config');
+      return {};
+    }
   }
 
   private static getIndentationType(