Revert "Revert features for minor (#11016)"

This reverts commit 09d65c3.

changelog_unreleased/cli/10924.md

@@ -0,0 +1,3 @@
+#### Infer parser for `.stylelintrc` (#10924 by @SevenOutman)
+
+A `.stylelintrc` file (without extension) is handled using `json` and `yaml` parsers.

src/language-yaml/embed.js

@@ -3,11 +3,11 @@
 function embed(path, print, textToDoc, options) {
   const node = path.getValue();
 
-  // Try to format `.prettierrc` as `json` first
+  // Try to format `.prettierrc` and `.stylelintrc` as `json` first
   if (
     node.type === "root" &&
     options.filepath &&
-    /(?:[/\\]|^)\.prettierrc$/.test(options.filepath)
+    /(?:[/\\]|^)\.(?:prettier|stylelint)rc$/.test(options.filepath)
   ) {
     return textToDoc(options.originalText, { ...options, parser: "json" });
   }

src/language-yaml/index.js

@@ -14,6 +14,7 @@ const languages = [
     filenames: [
       ...data.filenames.filter((filename) => filename !== "yarn.lock"),
       ".prettierrc",
+      ".stylelintrc",
     ],
   })),
 ];

tests/integration/__tests__/__snapshots__/support-info.js.snap

@@ -743,7 +743,8 @@ exports[`CLI --support-info (stdout) 1`] = `
         \\".clang-tidy\\",
         \\".gemrc\\",
         \\"glide.lock\\",
-        \\".prettierrc\\"
+        \\".prettierrc\\",
+        \\".stylelintrc\\"
       ],
       \\"linguistLanguageId\\": 407,
       \\"name\\": \\"YAML\\",

tests/integration/__tests__/with-parser-inference.js

@@ -28,6 +28,18 @@ describe("infers parser from filename", () => {
     ).toEqual("{}\n");
   });
 
+  test("json from .stylelintrc", () => {
+    expect(
+      prettier.format("  {   }  ", { filepath: "x/y/.stylelintrc" })
+    ).toEqual("{}\n");
+  });
+
+  test("yaml from .stylelintrc", () => {
+    expect(
+      prettier.format("  extends:    ''  ", { filepath: "x/y/.stylelintrc" })
+    ).toEqual('extends: ""\n');
+  });
+
   test("babel from Jakefile", () => {
     expect(
       prettier.format("let foo = ( x = 1 ) => x", { filepath: "x/y/Jakefile" })