Remove babylon parser (#7533)

* Remove `babylon`

* Add changelog

* Fix website files

changelog_unreleased/api/pr-7533.md

@@ -0,0 +1,3 @@
+#### Remove deprecated parser `babylon` ([#7533](https://github.com/prettier/prettier/pull/7533) by [@fisker](https://github.com/fisker))
+
+Parser `babylon` has been renamed to `babel` since _v1.16.0_, but aliased to keep backwards compatibility, now it's removed.

scripts/build/config.js

@@ -25,7 +25,7 @@ const PROJECT_ROOT = path.resolve(__dirname, "../..");
 /** @type {Bundle[]} */
 const parsers = [
   {
-    input: "src/language-js/parser-babylon.js"
+    input: "src/language-js/parser-babel.js"
   },
   {
     input: "src/language-js/parser-flow.js",

src/common/internal-plugins.js

@@ -12,42 +12,39 @@ module.exports = [
     parsers: {
       // JS - Babel
       get babel() {
-        return eval("require")("../language-js/parser-babylon").parsers.babel;
+        return eval("require")("../language-js/parser-babel").parsers.babel;
       },
       get "babel-flow"() {
-        return eval("require")("../language-js/parser-babylon").parsers[
+        return eval("require")("../language-js/parser-babel").parsers[
           "babel-flow"
         ];
       },
       get "babel-ts"() {
-        return eval("require")("../language-js/parser-babylon").parsers[
+        return eval("require")("../language-js/parser-babel").parsers[
           "babel-ts"
         ];
       },
-      get babylon() {
-        return eval("require")("../language-js/parser-babylon").parsers.babel;
-      },
       get json() {
-        return eval("require")("../language-js/parser-babylon").parsers.json;
+        return eval("require")("../language-js/parser-babel").parsers.json;
       },
       get json5() {
-        return eval("require")("../language-js/parser-babylon").parsers.json5;
+        return eval("require")("../language-js/parser-babel").parsers.json5;
       },
       get "json-stringify"() {
-        return eval("require")("../language-js/parser-babylon").parsers[
+        return eval("require")("../language-js/parser-babel").parsers[
           "json-stringify"
         ];
       },
       get __js_expression() {
-        return eval("require")("../language-js/parser-babylon").parsers
+        return eval("require")("../language-js/parser-babel").parsers
           .__js_expression;
       },
       get __vue_expression() {
-        return eval("require")("../language-js/parser-babylon").parsers
+        return eval("require")("../language-js/parser-babel").parsers
           .__vue_expression;
       },
       get __vue_event_binding() {
-        return eval("require")("../language-js/parser-babylon").parsers
+        return eval("require")("../language-js/parser-babel").parsers
           .__vue_event_binding;
       },
       // JS - Flow

src/language-js/parser-babel.js

@@ -1,8 +1,5 @@
 "use strict";
 
-// This file is currently named parser-babylon.js to maintain backwards compatibility.
-// However, it should be named parser-babel.js in the next major release.
-
 const createError = require("../common/parser-create-error");
 const { hasPragma } = require("./pragma");
 const locFns = require("./loc");
@@ -179,8 +176,6 @@ module.exports = {
     babel,
     "babel-flow": babelFlow,
     "babel-ts": babelTypeScript,
-    // aliased to keep backwards compatibility
-    babylon: babel,
     json: {
       ...babelExpression,
       hasPragma() {

src/main/core-options.js

@@ -125,12 +125,6 @@ const options = {
       typeof value === "string" || typeof value === "function",
     choices: [
       { value: "flow", description: "Flow" },
-      {
-        value: "babylon",
-        description: "JavaScript",
-        deprecated: "1.16.0",
-        redirect: "babel"
-      },
       { value: "babel", since: "1.16.0", description: "JavaScript" },
       { value: "babel-flow", since: "1.16.0", description: "Flow" },
       { value: "babel-ts", since: "2.0.0", description: "TypeScript" },

tests_config/require_standalone.js

@@ -7,7 +7,7 @@ const vm = require("vm");
 const sources = [
   "standalone.js",
   "parser-angular.js",
-  "parser-babylon.js",
+  "parser-babel.js",
   "parser-flow.js",
   "parser-glimmer.js",
   "parser-graphql.js",

tests_integration/__tests__/deprecated-parser.js

@@ -24,14 +24,3 @@ test("API format with deprecated parser (postcss) should work", () => {
   ).not.toThrowError();
   expect(warnings).toMatchSnapshot();
 });
-
-test("API format with deprecated parser (babylon) should work and do not report the same deprecation warning more than once", () => {
-  expect(() => {
-    prettier.format("hello_world( )", { parser: "babylon" });
-    prettier.format("hello_world( )", { parser: "babylon" });
-  }).not.toThrowError();
-  expect(warnings).toMatchInlineSnapshot(`
-"{ parser: \\"babylon\\" } is deprecated; we now treat it as { parser: \\"babel\\" }.
-"
-`);
-});

tests_integration/__tests__/parser-api.js

@@ -21,7 +21,6 @@ test("allows usage of prettier's supported parsers", () => {
   const output = prettier.format("foo ( )", {
     parser(text, parsers) {
       expect(typeof parsers.babel).toEqual("function");
-      expect(typeof parsers.babylon).toEqual("function");
       const ast = parsers.babel(text);
       ast.program.body[0].expression.callee.name = "bar";
       return ast;

website/playground/codeSamples.js

@@ -1,7 +1,6 @@
 export default function(parser) {
   switch (parser) {
     case "babel":
-    case "babylon": // backward compatibility
       return [
         'function HelloWorld({greeting = "hello", greeted = \'"World"\', silent = false, onMouseOver,}) {',
         "",

website/playground/markdown.js

@@ -36,7 +36,6 @@ function formatMarkdown(
 function getMarkdownSyntax(options) {
   switch (options.parser) {
     case "babel":
-    case "babylon": // backward compatibility
     case "babel-flow":
     case "flow":
       return "jsx";

website/static/service-worker.js

@@ -9,7 +9,7 @@ toolbox.precache([
   // Scripts
   "lib/standalone.js",
   "lib/parser-angular.js",
-  "lib/parser-babylon.js",
+  "lib/parser-babel.js",
   "lib/parser-flow.js",
   "lib/parser-glimmer.js",
   "lib/parser-graphql.js",

website/static/worker.js

@@ -14,45 +14,40 @@ function importScriptOnce(url) {
 var parsers = {
   // JS - Babel
   get babel() {
-    importScriptOnce("lib/parser-babylon.js");
-    return prettierPlugins.babylon.parsers.babel;
+    importScriptOnce("lib/parser-babel.js");
+    return prettierPlugins.babel.parsers.babel;
   },
   get "babel-flow"() {
-    importScriptOnce("lib/parser-babylon.js");
-    return prettierPlugins.babylon.parsers["babel-flow"];
+    importScriptOnce("lib/parser-babel.js");
+    return prettierPlugins.babel.parsers["babel-flow"];
   },
   get "babel-ts"() {
-    importScriptOnce("lib/parser-babylon.js");
-    return prettierPlugins.babylon.parsers["babel-ts"];
-  },
-  // backward compatibility
-  get babylon() {
-    importScriptOnce("lib/parser-babylon.js");
-    return prettierPlugins.babylon.parsers.babylon;
+    importScriptOnce("lib/parser-babel.js");
+    return prettierPlugins.babel.parsers["babel-ts"];
   },
   get json() {
-    importScriptOnce("lib/parser-babylon.js");
-    return prettierPlugins.babylon.parsers.json;
+    importScriptOnce("lib/parser-babel.js");
+    return prettierPlugins.babel.parsers.json;
   },
   get json5() {
-    importScriptOnce("lib/parser-babylon.js");
-    return prettierPlugins.babylon.parsers.json5;
+    importScriptOnce("lib/parser-babel.js");
+    return prettierPlugins.babel.parsers.json5;
   },
   get "json-stringify"() {
-    importScriptOnce("lib/parser-babylon.js");
-    return prettierPlugins.babylon.parsers["json-stringify"];
+    importScriptOnce("lib/parser-babel.js");
+    return prettierPlugins.babel.parsers["json-stringify"];
   },
   get __js_expression() {
-    importScriptOnce("lib/parser-babylon.js");
-    return prettierPlugins.babylon.parsers.__js_expression;
+    importScriptOnce("lib/parser-babel.js");
+    return prettierPlugins.babel.parsers.__js_expression;
   },
   get __vue_expression() {
-    importScriptOnce("lib/parser-babylon.js");
-    return prettierPlugins.babylon.parsers.__vue_expression;
+    importScriptOnce("lib/parser-babel.js");
+    return prettierPlugins.babel.parsers.__vue_expression;
   },
   get __vue_event_binding() {
-    importScriptOnce("lib/parser-babylon.js");
-    return prettierPlugins.babylon.parsers.__vue_event_binding;
+    importScriptOnce("lib/parser-babel.js");
+    return prettierPlugins.babel.parsers.__vue_event_binding;
   },
   // JS - Flow
   get flow() {