Parse class static block (#12079)

Co-authored-by: Brian Ng <bng412@gmail.com>

packages/babel-types/src/asserts/generated/index.js

@@ -803,6 +803,9 @@ export function assertTupleExpression(node: Object, opts?: Object = {}): void {
 export function assertDecimalLiteral(node: Object, opts?: Object = {}): void {
   assert("DecimalLiteral", node, opts);
 }
+export function assertStaticBlock(node: Object, opts?: Object = {}): void {
+  assert("StaticBlock", node, opts);
+}
 export function assertTSParameterProperty(
   node: Object,
   opts?: Object = {},

packages/babel-types/src/builders/generated/index.js

@@ -734,6 +734,10 @@ export function decimalLiteral(...args: Array<any>): Object {
   return builder("DecimalLiteral", ...args);
 }
 export { decimalLiteral as DecimalLiteral };
+export function staticBlock(...args: Array<any>): Object {
+  return builder("StaticBlock", ...args);
+}
+export { staticBlock as StaticBlock };
 export function tsParameterProperty(...args: Array<any>): Object {
   return builder("TSParameterProperty", ...args);
 }

packages/babel-types/src/definitions/experimental.js

@@ -245,3 +245,17 @@ defineType("DecimalLiteral", {
   },
   aliases: ["Expression", "Pureish", "Literal", "Immutable"],
 });
+
+// https://github.com/tc39/proposal-class-static-block
+defineType("StaticBlock", {
+  visitor: ["body"],
+  fields: {
+    body: {
+      validate: chain(
+        assertValueType("array"),
+        assertEach(assertNodeType("Statement")),
+      ),
+    },
+  },
+  aliases: ["Scopable", "BlockParent"],
+});

packages/babel-types/src/validators/generated/index.js

@@ -2587,6 +2587,20 @@ export function isDecimalLiteral(node: ?Object, opts?: Object): boolean {
 
   return false;
 }
+export function isStaticBlock(node: ?Object, opts?: Object): boolean {
+  if (!node) return false;
+
+  const nodeType = node.type;
+  if (nodeType === "StaticBlock") {
+    if (typeof opts === "undefined") {
+      return true;
+    } else {
+      return shallowEqual(node, opts);
+    }
+  }
+
+  return false;
+}
 export function isTSParameterProperty(node: ?Object, opts?: Object): boolean {
   if (!node) return false;
 
@@ -3605,6 +3619,7 @@ export function isScopable(node: ?Object, opts?: Object): boolean {
     "ForOfStatement" === nodeType ||
     "ClassMethod" === nodeType ||
     "ClassPrivateMethod" === nodeType ||
+    "StaticBlock" === nodeType ||
     "TSModuleBlock" === nodeType ||
     (nodeType === "Placeholder" && "BlockStatement" === node.expectedNode)
   ) {
@@ -3638,6 +3653,7 @@ export function isBlockParent(node: ?Object, opts?: Object): boolean {
     "ForOfStatement" === nodeType ||
     "ClassMethod" === nodeType ||
     "ClassPrivateMethod" === nodeType ||
+    "StaticBlock" === nodeType ||
     "TSModuleBlock" === nodeType ||
     (nodeType === "Placeholder" && "BlockStatement" === node.expectedNode)
   ) {