Initialisation

Added the packages and files for the backend server

node_modules/graphql/validation/validate.mjs

@@ -0,0 +1,133 @@
+import { devAssert } from '../jsutils/devAssert.mjs';
+import { GraphQLError } from '../error/GraphQLError.mjs';
+import { visit, visitInParallel } from '../language/visitor.mjs';
+import { assertValidSchema } from '../type/validate.mjs';
+import { TypeInfo, visitWithTypeInfo } from '../utilities/TypeInfo.mjs';
+import { specifiedRules, specifiedSDLRules } from './specifiedRules.mjs';
+import {
+  SDLValidationContext,
+  ValidationContext,
+} from './ValidationContext.mjs';
+/**
+ * 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.
+ *
+ * Validate will stop validation after a `maxErrors` limit has been reached.
+ * Attackers can send pathologically invalid queries to induce a DoS attack,
+ * so by default `maxErrors` set to 100 errors.
+ *
+ * Optionally a custom TypeInfo instance may be provided. If not provided, one
+ * will be created from the provided schema.
+ */
+
+export function validate(
+  schema,
+  documentAST,
+  rules = specifiedRules,
+  options,
+  /** @deprecated will be removed in 17.0.0 */
+  typeInfo = new TypeInfo(schema),
+) {
+  var _options$maxErrors;
+
+  const maxErrors =
+    (_options$maxErrors =
+      options === null || options === void 0 ? void 0 : options.maxErrors) !==
+      null && _options$maxErrors !== void 0
+      ? _options$maxErrors
+      : 100;
+  documentAST || devAssert(false, 'Must provide document.'); // If the schema used for validation is invalid, throw an error.
+
+  assertValidSchema(schema);
+  const abortObj = Object.freeze({});
+  const errors = [];
+  const context = new ValidationContext(
+    schema,
+    documentAST,
+    typeInfo,
+    (error) => {
+      if (errors.length >= maxErrors) {
+        errors.push(
+          new GraphQLError(
+            'Too many validation errors, error limit reached. Validation aborted.',
+          ),
+        ); // eslint-disable-next-line @typescript-eslint/no-throw-literal
+
+        throw abortObj;
+      }
+
+      errors.push(error);
+    },
+  ); // This uses a specialized visitor which runs multiple visitors in parallel,
+  // while maintaining the visitor skip and break API.
+
+  const visitor = visitInParallel(rules.map((rule) => 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,
+  rules = specifiedSDLRules,
+) {
+  const errors = [];
+  const context = new SDLValidationContext(
+    documentAST,
+    schemaToExtend,
+    (error) => {
+      errors.push(error);
+    },
+  );
+  const visitors = rules.map((rule) => 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) {
+  const errors = validateSDL(documentAST);
+
+  if (errors.length !== 0) {
+    throw new Error(errors.map((error) => 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) {
+  const errors = validateSDL(documentAST, schema);
+
+  if (errors.length !== 0) {
+    throw new Error(errors.map((error) => error.message).join('\n\n'));
+  }
+}