From 3746d674f3810d19156c3060c401adf536d999b8 Mon Sep 17 00:00:00 2001
From: Rebecca Vest <olserebe@hotmail.com>
Date: Wed, 11 May 2022 10:02:28 -0600
Subject: [PATCH] fix: :bug: Support 'overrideConfigFile' option for ESLint
 (#745)

---
 src/index.js | 25 +++++++++++++++++++++----
 src/utils.js |  3 ---
 2 files changed, 21 insertions(+), 7 deletions(-)

diff --git a/src/index.js b/src/index.js
index ab75eef5..804d556e 100644
--- a/src/index.js
+++ b/src/index.js
@@ -57,7 +57,7 @@ async function format(options) {
   const eslintConfig = merge(
     {},
     options.eslintConfig,
-    await getESLintConfig(filePath, eslintPath)
+    await getESLintConfig(filePath, eslintPath, options.eslintConfig || {})
   );
 
   const prettierOptions = merge(
@@ -248,8 +248,24 @@ function getTextFromFilePath(filePath) {
   }
 }
 
-async function getESLintConfig(filePath, eslintPath) {
-  const eslintOptions = {};
+function getESLintApiOptions(eslintConfig) {
+  // https://eslint.org/docs/developer-guide/nodejs-api
+  // these options affect what calculateConfigForFile produces
+  return {
+    ignore: eslintConfig.ignore || true,
+    ignorePath: eslintConfig.ignorePath || null,
+    allowInlineConfig: eslintConfig.allowInlineConfig || true,
+    baseConfig: eslintConfig.baseConfig || null,
+    overrideConfig: eslintConfig.overrideConfig || null,
+    overrideConfigFile: eslintConfig.overrideConfigFile || null,
+    plugins: eslintConfig.plugins || null,
+    resolvePluginsRelativeTo: eslintConfig.resolvePluginsRelativeTo || null,
+    rulePaths: eslintConfig.rulePaths || [],
+    useEslintrc: eslintConfig.useEslintrc || true
+  };
+}
+
+async function getESLintConfig(filePath, eslintPath, eslintOptions) {
   if (filePath) {
     eslintOptions.cwd = path.dirname(filePath);
   }
@@ -259,7 +275,8 @@ async function getESLintConfig(filePath, eslintPath) {
       "${filePath || process.cwd()}"
     `
   );
-  const eslint = getESLint(eslintPath, eslintOptions);
+  const eslint = getESLint(eslintPath, getESLintApiOptions(eslintOptions));
+
   try {
     logger.debug(`getting eslint config for file at "${filePath}"`);
     const config = await eslint.calculateConfigForFile(filePath);
diff --git a/src/utils.js b/src/utils.js
index 3ebd1ce5..975ea942 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -96,9 +96,6 @@ function getRelevantESLintConfig(eslintConfig) {
   return {
     // defaults
     useEslintrc: false,
-    baseConfig: {
-      settings: eslintConfig.settings || {}
-    },
     ...eslintConfig,
     // overrides
     rules: { ...eslintConfig.rules, ...relevantRules },