Parse class fields and private methods by default (#13175)

* feat: materialize class features

* chore: move testcases to es2022

* chore: update test fixtures

* chore: remove classPr\w+ from options.json

* chore: remove empty options.json

* update flow test allowlist

* update typescript allowlist

packages/babel-parser/src/parser/error-message.js

@@ -189,7 +189,8 @@ export const ErrorMessages = makeErrorTemplates(
       "Leading decorators must be attached to a class declaration.",
     UnexpectedLexicalDeclaration:
       "Lexical declaration cannot appear in a single-statement context.",
-    UnexpectedNewTarget: "`new.target` can only be used in functions.",
+    UnexpectedNewTarget:
+      "`new.target` can only be used in functions or class properties.",
     UnexpectedNumericSeparator:
       "A numeric separator is only allowed between two digits.",
     UnexpectedPrivateField:

packages/babel-parser/src/parser/expression.js

@@ -1283,7 +1283,6 @@ export default class ExpressionParser extends LValParser {
     const isPrivate = this.match(tt.hash);
 
     if (isPrivate) {
-      this.expectOnePlugin(["classPrivateProperties", "classPrivateMethods"]);
       if (!isPrivateNameAllowed) {
         this.raise(this.state.pos, Errors.UnexpectedPrivateField);
       }
@@ -1520,15 +1519,7 @@ export default class ExpressionParser extends LValParser {
       const metaProp = this.parseMetaProperty(node, meta, "target");
 
       if (!this.scope.inNonArrowFunction && !this.scope.inClass) {
-        const errorTemplate = { ...Errors.UnexpectedNewTarget };
-
-        if (this.hasPlugin("classProperties")) {
-          errorTemplate.template += " or class properties";
-        }
-
-        /* eslint-disable @babel/development-internal/dry-error-messages */
-        this.raise(metaProp.start, errorTemplate);
-        /* eslint-enable @babel/development-internal/dry-error-messages */
+        this.raise(metaProp.start, Errors.UnexpectedNewTarget);
       }
 
       return metaProp;

packages/babel-parser/src/parser/statement.js

@@ -1564,8 +1564,6 @@ export default class StatementParser extends ExpressionParser {
     classBody: N.ClassBody,
     prop: N.ClassPrivateProperty,
   ) {
-    this.expectPlugin("classPrivateProperties", prop.key.start);
-
     const node = this.parseClassPrivateProperty(prop);
     classBody.body.push(node);
 
@@ -1603,8 +1601,6 @@ export default class StatementParser extends ExpressionParser {
     isGenerator: boolean,
     isAsync: boolean,
   ): void {
-    this.expectPlugin("classPrivateMethods", method.key.start);
-
     const node = this.parseMethod(
       method,
       isGenerator,
@@ -1650,9 +1646,6 @@ export default class StatementParser extends ExpressionParser {
 
   // https://tc39.es/proposal-class-fields/#prod-FieldDefinition
   parseClassProperty(node: N.ClassProperty): N.ClassProperty {
-    if (!node.typeAnnotation || this.match(tt.eq)) {
-      this.expectPlugin("classProperties");
-    }
     this.parseInitializer(node);
     this.semicolon();
     return this.finishNode(node, "ClassProperty");