feat!: bump eslint, node and prettier versions, add types support (#508)

.changeset/config.json

@@ -1,5 +1,5 @@
 {
-  "$schema": "https://unpkg.com/@changesets/config@1.6.0/schema.json",
+  "$schema": "https://unpkg.com/@changesets/config/schema.json",
   "changelog": [
     "@changesets/changelog-github",
     {

.changeset/old-plants-exist.md

@@ -0,0 +1,5 @@
+---
+'eslint-plugin-prettier': major
+---
+
+feat!: bump peer eslint to ">=8.0.0" and node to "^14.18.0 || >=16.0.0"

.changeset/orange-eyes-brush.md

@@ -0,0 +1,5 @@
+---
+"eslint-plugin-prettier": major
+---
+
+feat!: upgrade to prettier v3

.changeset/pre.json

@@ -0,0 +1,8 @@
+{
+  "mode": "pre",
+  "tag": "alpha",
+  "initialVersions": {
+    "eslint-plugin-prettier": "4.2.2"
+  },
+  "changesets": []
+}

.changeset/quiet-cups-pull.md

@@ -0,0 +1,5 @@
+---
+"eslint-plugin-prettier": minor
+---
+
+feat: add typings support

.eslintrc.json

@@ -7,6 +7,9 @@
     "@1stg",
     "plugin:eslint-plugin/recommended"
   ],
+  "parserOptions": {
+    "project": null
+  },
   "rules": {
     "eslint-plugin/report-message-format": [
       "error",
@@ -28,7 +31,8 @@
     {
       "files": "test/*.js",
       "rules": {
-        "no-magic-numbers": "off"
+        "no-magic-numbers": "off",
+        "unicorn/prefer-top-level-await": "off"
       }
     }
   ]

.github/FUNDING.yml

@@ -1,8 +1,8 @@
 github:
   - JounQin
   - 1stG
-  - rxts
-  - unts
+  - rx-ts
+  - un-ts
 patreon: 1stG
 open_collective: prettier
 custom:

.github/workflows/ci.yml

@@ -8,17 +8,14 @@ on:
 
 jobs:
   ci:
-    name: 'Test: Node ${{ matrix.node-version }} - ESLint ${{ matrix.eslint-version }}'
+    name: Lint and Test on Node ${{ matrix.node-version }}
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        eslint-version:
-          - 7
-          - 8
         node-version:
-          - 12
           - 14
           - 16
+          - 18
 
     steps:
       - uses: actions/checkout@v3
@@ -29,11 +26,8 @@ jobs:
           node-version: ${{ matrix.node-version }}
           cache: yarn
 
-      - name: Use ESLint ${{ matrix.eslint-version }}
-        run: yarn upgrade eslint@${{ matrix.eslint-version }} --ignore-engines
-
       - name: Install
-        run: yarn --frozen-lockfile --ignore-engines
+        run: yarn --frozen-lockfile
 
       - name: Test
         run: yarn mocha

.remarkrc

@@ -1,5 +1,5 @@
 {
   "plugins": [
-    "@1stg/remark-config"
+    "@1stg/preset"
   ]
 }

README.md

@@ -139,7 +139,7 @@ If you’re fixing large of amounts of previously unformatted code, consider tem
 
   - An object with the following options
 
-    - `usePrettierrc`: Enables loading of the Prettier configuration file, (default: `true`). May be useful if you are using multiple tools that conflict with each other, or do not wish to mix your ESLint settings with your Prettier configuration.
+    - `usePrettierrc`: Enables loading of the Prettier configuration file, (default: `true`). May be useful if you are using multiple tools that conflict with each other, or do not wish to mix your ESLint settings with your Prettier configuration. And also, it is possible to run prettier without loading the prettierrc config file [via the CLI's --no-config option](https://prettier.io/docs/en/cli.html#--no-config) or through the API by [calling prettier.format() without passing through the options generated by calling resolveConfig](https://prettier.io/docs/en/api.html#prettierresolveconfigfilepath--options).
 
       ```json
       {

eslint-plugin-prettier.d.ts

@@ -0,0 +1,5 @@
+import { ESLint } from 'eslint';
+
+declare const eslintPluginPrettier: ESLint.Plugin;
+
+export = eslintPluginPrettier;

eslint-plugin-prettier.js

@@ -3,6 +3,16 @@
  * @author Andres Suarez
  */
 
+// @ts-check
+
+/**
+ * @typedef {import('eslint').AST.Range} Range
+ * @typedef {import('eslint').AST.SourceLocation} SourceLocation
+ * @typedef {import('eslint').ESLint.Plugin} Plugin
+ * @typedef {import('prettier').FileInfoOptions} FileInfoOptions
+ * @typedef {import('prettier').Options & { onDiskFilepath: string, parserPath: string, usePrettierrc?: boolean }} Options
+ */
+
 'use strict';
 
 // ------------------------------------------------------------------------------
@@ -26,9 +36,9 @@ const { INSERT, DELETE, REPLACE } = generateDifferences;
 
 // Lazily-loaded Prettier.
 /**
- * @type {import('prettier')}
+ * @type {(source: string, options: Options, fileInfoOptions: FileInfoOptions) => string}
  */
-let prettier;
+let prettierFormat;
 
 // ------------------------------------------------------------------------------
 //  Rule Definition
@@ -43,7 +53,7 @@ let prettier;
  */
 function reportDifference(context, difference) {
   const { operation, offset, deleteText = '', insertText = '' } = difference;
-  const range = [offset, offset + deleteText.length];
+  const range = /** @type {Range} */ ([offset, offset + deleteText.length]);
   const [start, end] = range.map(index =>
     context.getSourceCode().getLocFromIndex(index),
   );
@@ -63,7 +73,10 @@ function reportDifference(context, difference) {
 //  Module Definition
 // ------------------------------------------------------------------------------
 
-module.exports = {
+/**
+ * @type {Plugin}
+ */
+const eslintPluginPrettier = {
   configs: {
     recommended: {
       extends: ['prettier'],
@@ -112,7 +125,10 @@ module.exports = {
       create(context) {
         const usePrettierrc =
           !context.options[1] || context.options[1].usePrettierrc !== false;
-        const eslintFileInfoOptions =
+        /**
+         * @type {FileInfoOptions}
+         */
+        const fileInfoOptions =
           (context.options[1] && context.options[1].fileInfoOptions) || {};
         const sourceCode = context.getSourceCode();
         const filepath = context.getFilename();
@@ -125,134 +141,19 @@ module.exports = {
         const source = sourceCode.text;
 
         return {
-          // eslint-disable-next-line sonarjs/cognitive-complexity
           Program() {
-            if (!prettier) {
+            if (!prettierFormat) {
               // Prettier is expensive to load, so only load it if needed.
-              prettier = require('prettier');
+              prettierFormat = require('synckit').createSyncFn(
+                require.resolve('./worker'),
+              );
             }
 
+            /**
+             * @type {{}}
+             */
             const eslintPrettierOptions = context.options[0] || {};
 
-            const prettierRcOptions = usePrettierrc
-              ? prettier.resolveConfig.sync(onDiskFilepath, {
-                  editorconfig: true,
-                })
-              : null;
-
-            const { ignored, inferredParser } = prettier.getFileInfo.sync(
-              onDiskFilepath,
-              {
-                resolveConfig: false,
-                withNodeModules: false,
-                ignorePath: '.prettierignore',
-                plugins: prettierRcOptions ? prettierRcOptions.plugins : null,
-                ...eslintFileInfoOptions,
-              },
-            );
-
-            // Skip if file is ignored using a .prettierignore file
-            if (ignored) {
-              return;
-            }
-
-            const initialOptions = {};
-
-            // ESLint supports processors that let you extract and lint JS
-            // fragments within a non-JS language. In the cases where prettier
-            // supports the same language as a processor, we want to process
-            // the provided source code as javascript (as ESLint provides the
-            // rules with fragments of JS) instead of guessing the parser
-            // based off the filename. Otherwise, for instance, on a .md file we
-            // end up trying to run prettier over a fragment of JS using the
-            // markdown parser, which throws an error.
-            // Processors may set virtual filenames for these extracted blocks.
-            // If they do so then we want to trust the file extension they
-            // provide, and no override is needed.
-            // If the processor does not set any virtual filename (signified by
-            // `filepath` and `onDiskFilepath` being equal) AND we can't
-            // infer the parser from the filename, either because no filename
-            // was provided or because there is no parser found for the
-            // filename, use javascript.
-            // This is added to the options first, so that
-            // prettierRcOptions and eslintPrettierOptions can still override
-            // the parser.
-            //
-            // `parserBlocklist` should contain the list of prettier parser
-            // names for file types where:
-            // * Prettier supports parsing the file type
-            // * There is an ESLint processor that extracts JavaScript snippets
-            //   from the file type.
-            if (filepath === onDiskFilepath) {
-              // The following list means the plugin process source into js content
-              // but with same filename, so we need to change the parser to `babel`
-              // by default.
-              // Related ESLint plugins are:
-              // 1. `eslint-plugin-graphql` (replacement: `@graphql-eslint/eslint-plugin`)
-              // 2. `eslint-plugin-html`
-              // 3. `eslint-plugin-markdown@1` (replacement: `eslint-plugin-markdown@2+`)
-              // 4. `eslint-plugin-svelte3` (replacement: `eslint-plugin-svelte@2+`)
-              const parserBlocklist = [null, 'markdown', 'html'];
-
-              let inferParserToBabel = parserBlocklist.includes(inferredParser);
-
-              switch (inferredParser) {
-                // it could be processed by `@graphql-eslint/eslint-plugin` or `eslint-plugin-graphql`
-                case 'graphql': {
-                  if (
-                    // for `eslint-plugin-graphql`, see https://github.com/apollographql/eslint-plugin-graphql/blob/master/src/index.js#L416
-                    source.startsWith('ESLintPluginGraphQLFile`')
-                  ) {
-                    inferParserToBabel = true;
-                  }
-                  break;
-                }
-                // it could be processed by `@ota-meshi/eslint-plugin-svelte`, `eslint-plugin-svelte` or `eslint-plugin-svelte3`
-                case 'svelte': {
-                  // The `source` would be modified by `eslint-plugin-svelte3`
-                  if (!context.parserPath.includes('svelte-eslint-parser')) {
-                    // We do not support `eslint-plugin-svelte3`,
-                    // the users should run `prettier` on `.svelte` files manually
-                    return;
-                  }
-                }
-              }
-
-              if (inferParserToBabel) {
-                initialOptions.parser = 'babel';
-              }
-            } else {
-              // Similar to https://github.com/prettier/stylelint-prettier/pull/22
-              // In all of the following cases ESLint extracts a part of a file to
-              // be formatted and there exists a prettier parser for the whole file.
-              // If you're interested in prettier you'll want a fully formatted file so
-              // you're about to run prettier over the whole file anyway.
-              // Therefore running prettier over just the style section is wasteful, so
-              // skip it.
-              const parserBlocklist = [
-                'babel',
-                'babylon',
-                'flow',
-                'typescript',
-                'vue',
-                'markdown',
-                'html',
-                'mdx',
-                'angular',
-                'svelte',
-              ];
-              if (parserBlocklist.includes(inferredParser)) {
-                return;
-              }
-            }
-
-            const prettierOptions = {
-              ...initialOptions,
-              ...prettierRcOptions,
-              ...eslintPrettierOptions,
-              filepath,
-            };
-
             // prettier.format() may throw a SyntaxError if it cannot parse the
             // source code it is given. Usually for JS files this isn't a
             // problem as ESLint will report invalid syntax before trying to
@@ -261,29 +162,51 @@ module.exports = {
             // files throw an error if they contain unclosed elements, such as
             // `<template><div></template>. In this case report an error at the
             // point at which parsing failed.
+            /**
+             * @type {string}
+             */
             let prettierSource;
             try {
-              prettierSource = prettier.format(source, prettierOptions);
+              prettierSource = prettierFormat(
+                source,
+                {
+                  ...eslintPrettierOptions,
+                  filepath,
+                  onDiskFilepath,
+                  parserPath: context.parserPath,
+                  usePrettierrc,
+                },
+                fileInfoOptions,
+              );
             } catch (err) {
               if (!(err instanceof SyntaxError)) {
                 throw err;
               }
 
               let message = 'Parsing error: ' + err.message;
 
+              const error =
+                /** @type {SyntaxError & {codeFrame: string; loc: SourceLocation}} */ (
+                  err
+                );
+
               // Prettier's message contains a codeframe style preview of the
               // invalid code and the line/column at which the error occurred.
               // ESLint shows those pieces of information elsewhere already so
               // remove them from the message
-              if (err.codeFrame) {
-                message = message.replace(`\n${err.codeFrame}`, '');
+              if (error.codeFrame) {
+                message = message.replace(`\n${error.codeFrame}`, '');
               }
-              if (err.loc) {
+              if (error.loc) {
                 message = message.replace(/ \(\d+:\d+\)$/, '');
               }
 
-              context.report({ message, loc: err.loc });
+              context.report({ message, loc: error.loc });
+
+              return;
+            }
 
+            if (prettierSource == null) {
               return;
             }
 
@@ -300,3 +223,5 @@ module.exports = {
     },
   },
 };
+
+module.exports = eslintPluginPrettier;