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node_modules/graphql/validation/validate.mjs

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+import devAssert from '../jsutils/devAssert';
+import { GraphQLError } from '../error/GraphQLError';
+import { visit, visitInParallel, visitWithTypeInfo } from '../language/visitor';
+import { assertValidSchema } from '../type/validate';
+import { TypeInfo } from '../utilities/TypeInfo';
+import { specifiedRules, specifiedSDLRules } from './specifiedRules';
+import { SDLValidationContext, ValidationContext } from './ValidationContext';
+export var ABORT_VALIDATION = Object.freeze({});
+/**
+ * Implements the "Validation" section of the spec.
+ *
+ * Validation runs synchronously, returning an array of encountered errors, or
+ * an empty array if no errors were encountered and the document is valid.
+ *
+ * A list of specific validation rules may be provided. If not provided, the
+ * default list of rules defined by the GraphQL specification will be used.
+ *
+ * Each validation rules is a function which returns a visitor
+ * (see the language/visitor API). Visitor methods are expected to return
+ * GraphQLErrors, or Arrays of GraphQLErrors when invalid.
+ *
+ * Optionally a custom TypeInfo instance may be provided. If not provided, one
+ * will be created from the provided schema.
+ */
+
+export function validate(schema, documentAST) {
+  var rules = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : specifiedRules;
+  var typeInfo = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : new TypeInfo(schema);
+  var options = arguments.length > 4 ? arguments[4] : undefined;
+  documentAST || devAssert(0, 'Must provide document'); // If the schema used for validation is invalid, throw an error.
+
+  assertValidSchema(schema);
+  var abortObj = Object.freeze({});
+  var errors = [];
+  var maxErrors = options && options.maxErrors;
+  var context = new ValidationContext(schema, documentAST, typeInfo, function (error) {
+    if (maxErrors != null && errors.length >= maxErrors) {
+      errors.push(new GraphQLError('Too many validation errors, error limit reached. Validation aborted.'));
+      throw abortObj;
+    }
+
+    errors.push(error);
+  }); // This uses a specialized visitor which runs multiple visitors in parallel,
+  // while maintaining the visitor skip and break API.
+
+  var visitor = visitInParallel(rules.map(function (rule) {
+    return rule(context);
+  })); // Visit the whole document with each instance of all provided rules.
+
+  try {
+    visit(documentAST, visitWithTypeInfo(typeInfo, visitor));
+  } catch (e) {
+    if (e !== abortObj) {
+      throw e;
+    }
+  }
+
+  return errors;
+} // @internal
+
+export function validateSDL(documentAST, schemaToExtend) {
+  var rules = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : specifiedSDLRules;
+  var errors = [];
+  var context = new SDLValidationContext(documentAST, schemaToExtend, function (error) {
+    errors.push(error);
+  });
+  var visitors = rules.map(function (rule) {
+    return rule(context);
+  });
+  visit(documentAST, visitInParallel(visitors));
+  return errors;
+}
+/**
+ * Utility function which asserts a SDL document is valid by throwing an error
+ * if it is invalid.
+ *
+ * @internal
+ */
+
+export function assertValidSDL(documentAST) {
+  var errors = validateSDL(documentAST);
+
+  if (errors.length !== 0) {
+    throw new Error(errors.map(function (error) {
+      return error.message;
+    }).join('\n\n'));
+  }
+}
+/**
+ * Utility function which asserts a SDL document is valid by throwing an error
+ * if it is invalid.
+ *
+ * @internal
+ */
+
+export function assertValidSDLExtension(documentAST, schema) {
+  var errors = validateSDL(documentAST, schema);
+
+  if (errors.length !== 0) {
+    throw new Error(errors.map(function (error) {
+      return error.message;
+    }).join('\n\n'));
+  }
+}