1 files changed, 50 insertions, 0 deletions
diff --git a/chromium/third_party/node/node_modules/@babel/types/scripts/generators/asserts.js b/chromium/third_party/node/node_modules/@babel/types/scripts/generators/asserts.js
new file mode 100644
index 00000000000..bdfd94857fc
--- /dev/null
+++ b/chromium/third_party/node/node_modules/@babel/types/scripts/generators/asserts.js
@@ -0,0 +1,50 @@
+import definitions from "../../lib/definitions/index.js";
+
+function addAssertHelper(type) {
+  const result =
+    definitions.NODE_FIELDS[type] || definitions.FLIPPED_ALIAS_KEYS[type]
+      ? `node is t.${type}`
+      : "boolean";
+
+  return `export function assert${type}(node: object | null | undefined, opts?: object | null): asserts ${
+    result === "boolean" ? "node" : result
+  } {
+    assert("${type}", node, opts) }
+  `;
+}
+
+export default function generateAsserts() {
+  let output = `/*
+ * This file is auto-generated! Do not modify it directly.
+ * To re-generate run 'make build'
+ */
+import is from "../../validators/is";
+import type * as t from "../..";
+
+function assert(type: string, node: any, opts?: any): void {
+  if (!is(type, node, opts)) {
+    throw new Error(
+      \`Expected type "\${type}" with option \${JSON.stringify(opts)}, \` +
+        \`but instead got "\${node.type}".\`,
+    );
+  }
+}\n\n`;
+
+  Object.keys(definitions.VISITOR_KEYS).forEach(type => {
+    output += addAssertHelper(type);
+  });
+
+  Object.keys(definitions.FLIPPED_ALIAS_KEYS).forEach(type => {
+    output += addAssertHelper(type);
+  });
+
+  Object.keys(definitions.DEPRECATED_KEYS).forEach(type => {
+    const newType = definitions.DEPRECATED_KEYS[type];
+    output += `export function assert${type}(node: any, opts: any): void {
+  console.trace("The node type ${type} has been renamed to ${newType}");
+  assert("${type}", node, opts);
+}\n`;
+  });
+
+  return output;
+}