Add support for flow's SymbolTypeAnnotation (#11077)

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

@@ -524,6 +524,12 @@ export function assertStringTypeAnnotation(
 ): void {
   assert("StringTypeAnnotation", node, opts);
 }
+export function assertSymbolTypeAnnotation(
+  node: Object,
+  opts?: Object = {},
+): void {
+  assert("SymbolTypeAnnotation", node, opts);
+}
 export function assertThisTypeAnnotation(
   node: Object,
   opts?: Object = {},

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

@@ -469,6 +469,10 @@ export function StringTypeAnnotation(...args: Array<any>): Object {
   return builder("StringTypeAnnotation", ...args);
 }
 export { StringTypeAnnotation as stringTypeAnnotation };
+export function SymbolTypeAnnotation(...args: Array<any>): Object {
+  return builder("SymbolTypeAnnotation", ...args);
+}
+export { SymbolTypeAnnotation as symbolTypeAnnotation };
 export function ThisTypeAnnotation(...args: Array<any>): Object {
   return builder("ThisTypeAnnotation", ...args);
 }

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

@@ -372,6 +372,10 @@ defineType("StringTypeAnnotation", {
   aliases: ["Flow", "FlowType", "FlowBaseAnnotation"],
 });
 
+defineType("SymbolTypeAnnotation", {
+  aliases: ["Flow", "FlowType", "FlowBaseAnnotation"],
+});
+
 defineType("ThisTypeAnnotation", {
   aliases: ["Flow", "FlowType", "FlowBaseAnnotation"],
 });

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

@@ -1692,6 +1692,20 @@ export function isStringTypeAnnotation(node: ?Object, opts?: Object): boolean {
 
   return false;
 }
+export function isSymbolTypeAnnotation(node: ?Object, opts?: Object): boolean {
+  if (!node) return false;
+
+  const nodeType = node.type;
+  if (nodeType === "SymbolTypeAnnotation") {
+    if (typeof opts === "undefined") {
+      return true;
+    } else {
+      return shallowEqual(node, opts);
+    }
+  }
+
+  return false;
+}
 export function isThisTypeAnnotation(node: ?Object, opts?: Object): boolean {
   if (!node) return false;
 
@@ -4270,6 +4284,7 @@ export function isFlow(node: ?Object, opts?: Object): boolean {
     "QualifiedTypeIdentifier" === nodeType ||
     "StringLiteralTypeAnnotation" === nodeType ||
     "StringTypeAnnotation" === nodeType ||
+    "SymbolTypeAnnotation" === nodeType ||
     "ThisTypeAnnotation" === nodeType ||
     "TupleTypeAnnotation" === nodeType ||
     "TypeofTypeAnnotation" === nodeType ||
@@ -4316,6 +4331,7 @@ export function isFlowType(node: ?Object, opts?: Object): boolean {
     "ObjectTypeAnnotation" === nodeType ||
     "StringLiteralTypeAnnotation" === nodeType ||
     "StringTypeAnnotation" === nodeType ||
+    "SymbolTypeAnnotation" === nodeType ||
     "ThisTypeAnnotation" === nodeType ||
     "TupleTypeAnnotation" === nodeType ||
     "TypeofTypeAnnotation" === nodeType ||
@@ -4344,6 +4360,7 @@ export function isFlowBaseAnnotation(node: ?Object, opts?: Object): boolean {
     "EmptyTypeAnnotation" === nodeType ||
     "NumberTypeAnnotation" === nodeType ||
     "StringTypeAnnotation" === nodeType ||
+    "SymbolTypeAnnotation" === nodeType ||
     "ThisTypeAnnotation" === nodeType ||
     "VoidTypeAnnotation" === nodeType
   ) {