1 files changed, 66 insertions, 0 deletions
diff --git a/chromium/third_party/node/node_modules/@babel/types/scripts/utils/stringifyValidator.js b/chromium/third_party/node/node_modules/@babel/types/scripts/utils/stringifyValidator.js
new file mode 100644
index 00000000000..4b8d29c12c3
--- /dev/null
+++ b/chromium/third_party/node/node_modules/@babel/types/scripts/utils/stringifyValidator.js
@@ -0,0 +1,66 @@
+export default function stringifyValidator(validator, nodePrefix) {
+  if (validator === undefined) {
+    return "any";
+  }
+
+  if (validator.each) {
+    return `Array<${stringifyValidator(validator.each, nodePrefix)}>`;
+  }
+
+  if (validator.chainOf) {
+    return stringifyValidator(validator.chainOf[1], nodePrefix);
+  }
+
+  if (validator.oneOf) {
+    return validator.oneOf.map(JSON.stringify).join(" | ");
+  }
+
+  if (validator.oneOfNodeTypes) {
+    return validator.oneOfNodeTypes.map(_ => nodePrefix + _).join(" | ");
+  }
+
+  if (validator.oneOfNodeOrValueTypes) {
+    return validator.oneOfNodeOrValueTypes
+      .map(_ => {
+        return isValueType(_) ? _ : nodePrefix + _;
+      })
+      .join(" | ");
+  }
+
+  if (validator.type) {
+    return validator.type;
+  }
+
+  if (validator.shapeOf) {
+    return (
+      "{ " +
+      Object.keys(validator.shapeOf)
+        .map(shapeKey => {
+          const propertyDefinition = validator.shapeOf[shapeKey];
+          if (propertyDefinition.validate) {
+            const isOptional =
+              propertyDefinition.optional || propertyDefinition.default != null;
+            return (
+              shapeKey +
+              (isOptional ? "?: " : ": ") +
+              stringifyValidator(propertyDefinition.validate)
+            );
+          }
+          return null;
+        })
+        .filter(Boolean)
+        .join(", ") +
+      " }"
+    );
+  }
+
+  return ["any"];
+}
+
+/**
+ * Heuristic to decide whether or not the given type is a value type (eg. "null")
+ * or a Node type (eg. "Expression").
+ */
+function isValueType(type) {
+  return type.charAt(0).toLowerCase() === type.charAt(0);
+}