Fix argument passed to lilconfig.search() (#15363)

changelog_unreleased/api/15363.md

@@ -0,0 +1,19 @@
+#### Fix config file search (#15363 by @fisker)
+
+Previously, we start search for config files from the filePath as a directory, if it happened to be a directory and contains config file, it will be used by mistake.
+
+```text
+├─ .prettierrc
+└─ test.js         (A directory)
+  └─ index.min.js
+```
+
+```js
+// Prettier stable
+await prettier.resolveConfigFile(new URL("./test.js", import.meta.url));
+// <CWD>/test.js/.prettierrc
+
+// Prettier main
+await prettier.resolveConfigFile(new URL("./test.js", import.meta.url));
+// <CWD>/.prettierrc
+```

src/cli/format.js

@@ -248,6 +248,8 @@ async function formatStdin(context) {
 
   try {
     const input = await getStdin();
+    // TODO[@fisker]: Exit if no input.
+    // `prettier --config-precedence cli-override`
 
     let isFileIgnored = false;
     if (filepath) {
@@ -262,7 +264,7 @@ async function formatStdin(context) {
 
     const options = await getOptionsForFile(
       context,
-      filepath ? path.resolve(process.cwd(), filepath) : process.cwd(),
+      filepath ? path.resolve(filepath) : undefined,
     );
 
     if (await listDifferent(context, input, options, "(stdin)")) {

src/cli/options/get-options-for-file.js

@@ -77,7 +77,8 @@ async function getOptionsOrDie(context, filePath) {
     return options;
   } catch (error) {
     context.logger.error(
-      `Invalid configuration for file "${filePath}":\n` + error.message,
+      `Invalid configuration${filePath ? ` for file "${filePath}"` : ""}:\n` +
+        error.message,
     );
     process.exit(2);
   }
@@ -103,7 +104,6 @@ function applyConfigPrecedence(context, options) {
 
 async function getOptionsForFile(context, filepath) {
   const options = await getOptionsOrDie(context, filepath);
-
   const hasPlugins = options?.plugins;
   if (hasPlugins) {
     await context.pushContextPlugins(options.plugins);

src/config/resolve-config.js

@@ -30,9 +30,17 @@ function loadPrettierConfig(filePath, options) {
   const { load, search } = getPrettierConfigExplorer({
     cache: Boolean(useCache),
   });
-  return configPath
-    ? load(configPath)
-    : search(filePath ? path.resolve(filePath) : undefined);
+
+  if (configPath) {
+    return load(configPath);
+  }
+
+  if (!filePath) {
+    return search();
+  }
+
+  const dirname = path.dirname(path.resolve(filePath));
+  return search(dirname);
 }
 
 async function resolveConfig(fileUrlOrPath, options) {
@@ -65,10 +73,11 @@ async function resolveConfig(fileUrlOrPath, options) {
 }
 
 async function resolveConfigFile(fileUrlOrPath) {
-  const { search } = getPrettierConfigExplorer({ cache: false });
-  const result = await search(
-    fileUrlOrPath ? path.resolve(toPath(fileUrlOrPath)) : undefined,
-  );
+  const { search } = getPrettierConfigExplorerWithoutCache();
+  const dirname = fileUrlOrPath
+    ? path.dirname(path.resolve(toPath(fileUrlOrPath)))
+    : undefined;
+  const result = await search(dirname);
   return result?.filepath ?? null;
 }
 

tests/integration/__tests__/__snapshots__/config-invalid.js.snap

@@ -22,7 +22,7 @@ exports[`show warning with unknown option (stdout) 1`] = `""`;
 exports[`show warning with unknown option (write) 1`] = `[]`;
 
 exports[`throw error for unsupported extension (stderr) 1`] = `
-"[error] Invalid configuration for file "<cli>/config/invalid":
+"[error] Invalid configuration:
 [error] No loader specified for extension ".unsupported""
 `;
 
@@ -62,7 +62,7 @@ exports[`throw error with invalid config precedence option (configPrecedence) (s
 exports[`throw error with invalid config precedence option (configPrecedence) (write) 1`] = `[]`;
 
 exports[`throw error with invalid config target (directory) (stderr) 1`] = `
-"[error] Invalid configuration for file "<cli>/config/invalid":
+"[error] Invalid configuration:
 [error] EISDIR: illegal operation on a directory, read"
 `;
 

tests/integration/__tests__/__snapshots__/config-resolution.js.snap

@@ -10,7 +10,7 @@ exports[`accepts configuration from --config (stdout) 1`] = `
 
 exports[`accepts configuration from --config (write) 1`] = `[]`;
 
-exports[`prints error message when no file found with --find-config-path (stderr) 1`] = `"[error] Can not find configure file for ".."."`;
+exports[`prints error message when no file found with --find-config-path (stderr) 1`] = `"[error] Can not find configure file for "../--non-exits-filename--"."`;
 
 exports[`prints error message when no file found with --find-config-path (write) 1`] = `[]`;
 

tests/integration/__tests__/config-resolution.js

@@ -74,7 +74,7 @@ describe("prints error message when no file found with --find-config-path", () =
     "--end-of-line",
     "lf",
     "--find-config-path",
-    "..",
+    "../--non-exits-filename--",
   ]).test({
     stdout: "",
     status: 1,
@@ -389,3 +389,32 @@ test("API resolveConfig accepts path or URL", async () => {
   expect(resultByPath).toMatchObject(expectedResult);
   expect(resultByRelativePath).toMatchObject(expectedResult);
 });
+
+test("Search from directory, not treat file as directory", async () => {
+  // CLI
+  const getConfigFileByCli = async (file) => {
+    const { stdout: configFile } = await runCli("cli/config/config-position/", [
+      "--find-config-path",
+      file,
+    ]);
+    return configFile;
+  };
+
+  expect(await getConfigFileByCli("file.js")).toBe(".prettierrc");
+  expect(await getConfigFileByCli("directory/file-in-child-directory.js")).toBe(
+    "directory/.prettierrc",
+  );
+
+  // Api
+  const directory = new URL("../cli/config/config-position/", import.meta.url);
+  const getConfigFileByApi = async (file) => {
+    const configFile = await prettier.resolveConfigFile(
+      new URL(file, directory),
+    );
+    return url.pathToFileURL(configFile).href.slice(directory.href.length);
+  };
+  expect(await getConfigFileByApi("file.js")).toBe(".prettierrc");
+  expect(await getConfigFileByApi("directory/file-in-child-directory.js")).toBe(
+    "directory/.prettierrc",
+  );
+});

tests/integration/cli/config/config-position/.prettierrc

@@ -0,0 +1 @@
+{}

tests/integration/cli/config/config-position/directory/.prettierrc

@@ -0,0 +1 @@
+{}

tests/integration/cli/config/config-position/directory/file-indirectory.js

@@ -0,0 +1,2 @@
+Hello
+.prettier()

tests/integration/cli/config/config-position/file.js

@@ -0,0 +1,2 @@
+Hello
+.prettier()