Breaking: Remove pragma support

Prettier now provides native pragma support using @Format or @prettier
notation. Use that instead of our implementation

Fixes #48, Fixes #54

README.md

@@ -125,46 +125,11 @@ For the list of every available exclusion rule set, please see the [readme of es
     }]
     ```
 
-    NB: This option will merge and override any config set with `.prettierrc` files (for Prettier < 1.7.0, [config files are ignored](https://github.com/prettier/eslint-plugin-prettier/issues/46))
+    NB: This option will merge and override any config set with `.prettierrc` files
 
 - The second option:
 
-  - A string with a pragma that triggers this rule. By default, this rule applies to all files. However, if you set a pragma (this option), only files with that pragma in the heading docblock will be checked. All pragmas must start with `@`. Example:
-
-    ```json
-    "prettier/prettier": ["error", null, "@prettier"]
-    ```
-
-    Only files with `@prettier` in the heading docblock will be checked:
-
-    ```js
-    /** @prettier */
-
-    console.log(1 + 2 + 3);
-    ```
-
-    Or:
-
-    ```js
-    /**
-     * @prettier
-     */
-
-    console.log(4 + 5 + 6);
-    ```
-
-    _This option is useful if you're migrating a large codebase and already use pragmas like `@flow`._
-
   - An object with the following options
-
-    - `pragma`: Also sets the aforementioned `pragma`: a string with a pragma that triggers this rule. By default, this rule applies to all files. However, if you set a pragma (this option), only files with that pragma in the heading docblock will be checked. All pragmas must start with `@`.
-
-      ```json
-      "prettier/prettier": ["error", null, {
-        "pragma": "@prettier"
-      }]
-      ```
-
     - `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.
 
       ```json

eslint-plugin-prettier.js

@@ -10,7 +10,6 @@
 // ------------------------------------------------------------------------------
 
 const diff = require('fast-diff');
-const docblock = require('jest-docblock');
 
 // ------------------------------------------------------------------------------
 //  Constants
@@ -285,25 +284,6 @@ function reportReplace(context, offset, deleteText, insertText) {
   });
 }
 
-/**
- * Get the pragma from the ESLint rule context.
- * @param {RuleContext} context - The ESLint rule context.
- * @returns {string|null}
- */
-function getPragma(context) {
-  const pluginOptions = context.options[1];
-
-  if (!pluginOptions) {
-    return null;
-  }
-
-  const pragmaRef =
-    typeof pluginOptions === 'string' ? pluginOptions : pluginOptions.pragma;
-
-  // Remove leading @
-  return pragmaRef ? pragmaRef.slice(1) : null;
-}
-
 // ------------------------------------------------------------------------------
 //  Module Definition
 // ------------------------------------------------------------------------------
@@ -337,12 +317,9 @@ module.exports = {
           },
           {
             anyOf: [
-              // Pragma:
-              { type: 'string', pattern: '^@\\w+$' },
               {
                 type: 'object',
                 properties: {
-                  pragma: { type: 'string', pattern: '^@\\w+$' },
                   usePrettierrc: { type: 'boolean' }
                 },
                 additionalProperties: true
@@ -352,37 +329,12 @@ module.exports = {
         ]
       },
       create(context) {
-        const pragma = getPragma(context);
         const usePrettierrc =
           !context.options[1] || context.options[1].usePrettierrc !== false;
         const sourceCode = context.getSourceCode();
         const filepath = context.getFilename();
         const source = sourceCode.text;
 
-        // The pragma is only valid if it is found in a block comment at the very
-        // start of the file.
-        if (pragma) {
-          // ESLint 3.x reports the shebang as a "Line" node, while ESLint 4.x
-          // reports it as a "Shebang" node. This works for both versions:
-          const hasShebang = source.startsWith('#!');
-          const allComments = sourceCode.getAllComments();
-          const firstComment = hasShebang ? allComments[1] : allComments[0];
-          if (
-            !(
-              firstComment &&
-              firstComment.type === 'Block' &&
-              firstComment.loc.start.line === (hasShebang ? 2 : 1) &&
-              firstComment.loc.start.column === 0
-            )
-          ) {
-            return {};
-          }
-          const parsed = docblock.parse(firstComment.value);
-          if (parsed[pragma] !== '') {
-            return {};
-          }
-        }
-
         if (prettier && prettier.clearConfigCache) {
           prettier.clearConfigCache();
         }

package.json

@@ -28,8 +28,7 @@
   },
   "homepage": "https://github.com/prettier/eslint-plugin-prettier#readme",
   "dependencies": {
-    "fast-diff": "^1.1.1",
-    "jest-docblock": "^21.0.0"
+    "fast-diff": "^1.1.1"
   },
   "peerDependencies": {
     "prettier": ">= 1.13.0"

test/prettier.js

@@ -31,21 +31,8 @@ ruleTester.run('prettier', rule, {
   valid: [
     // Correct style.
     { code: '"";\n' },
-    // No pragma = No prettier check.
-    { code: '""\n', options: [null, '@format'] },
     // Facebook style uses single quotes.
     { code: `('');\n`, options: ['fb'] },
-    // Facebook style but missing pragma.
-    { code: `"";\n`, options: ['fb', '@format'] },
-    // Facebook style with pragma.
-    { code: `/** @format */\n('');\n`, options: ['fb', '@format'] },
-    // Shebang with pragma.
-    { code: `#!/bin/node\n/** @format */\n"";\n`, options: [null, '@format'] },
-    // Shebang with pragma from options.
-    {
-      code: `#!/bin/node\n/** @format */\n"";\n`,
-      options: [null, { pragma: '@format' }]
-    },
     // Single quote from .prettierrc.
     { code: `'';\n`, filename: getPrettierRcJsFilename('single-quote') },
     // Override .prettierrc from object option.
@@ -98,15 +85,12 @@ ruleTester.run('prettier', rule, {
     '10',
     '11-a',
     '11-b',
-    '11-c',
-    '12',
     '13',
     '14',
     '15',
     '16',
     '17',
-    '18',
-    '19'
+    '18'
   ].map(loadInvalidFixture)
 });
 

yarn.lock

@@ -553,10 +553,6 @@ isexe@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/isexe/-/isexe-2.0.0.tgz#e8fbf374dc556ff8947a10dcb0572d633f2cfa10"
 
-jest-docblock@^21.0.0:
-  version "21.1.0"
-  resolved "https://registry.yarnpkg.com/jest-docblock/-/jest-docblock-21.1.0.tgz#43154be2441fb91403e36bb35cb791a5017cea81"
-
 js-tokens@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"