Initialisation

Added the packages and files for the backend server

node_modules/graphql/validation/rules/KnownDirectivesRule.js

@@ -0,0 +1,167 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true,
+});
+exports.KnownDirectivesRule = KnownDirectivesRule;
+
+var _inspect = require('../../jsutils/inspect.js');
+
+var _invariant = require('../../jsutils/invariant.js');
+
+var _GraphQLError = require('../../error/GraphQLError.js');
+
+var _ast = require('../../language/ast.js');
+
+var _directiveLocation = require('../../language/directiveLocation.js');
+
+var _kinds = require('../../language/kinds.js');
+
+var _directives = require('../../type/directives.js');
+
+/**
+ * Known directives
+ *
+ * A GraphQL document is only valid if all `@directives` are known by the
+ * schema and legally positioned.
+ *
+ * See https://spec.graphql.org/draft/#sec-Directives-Are-Defined
+ */
+function KnownDirectivesRule(context) {
+  const locationsMap = Object.create(null);
+  const schema = context.getSchema();
+  const definedDirectives = schema
+    ? schema.getDirectives()
+    : _directives.specifiedDirectives;
+
+  for (const directive of definedDirectives) {
+    locationsMap[directive.name] = directive.locations;
+  }
+
+  const astDefinitions = context.getDocument().definitions;
+
+  for (const def of astDefinitions) {
+    if (def.kind === _kinds.Kind.DIRECTIVE_DEFINITION) {
+      locationsMap[def.name.value] = def.locations.map((name) => name.value);
+    }
+  }
+
+  return {
+    Directive(node, _key, _parent, _path, ancestors) {
+      const name = node.name.value;
+      const locations = locationsMap[name];
+
+      if (!locations) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(`Unknown directive "@${name}".`, {
+            nodes: node,
+          }),
+        );
+        return;
+      }
+
+      const candidateLocation = getDirectiveLocationForASTPath(ancestors);
+
+      if (candidateLocation && !locations.includes(candidateLocation)) {
+        context.reportError(
+          new _GraphQLError.GraphQLError(
+            `Directive "@${name}" may not be used on ${candidateLocation}.`,
+            {
+              nodes: node,
+            },
+          ),
+        );
+      }
+    },
+  };
+}
+
+function getDirectiveLocationForASTPath(ancestors) {
+  const appliedTo = ancestors[ancestors.length - 1];
+  'kind' in appliedTo || (0, _invariant.invariant)(false);
+
+  switch (appliedTo.kind) {
+    case _kinds.Kind.OPERATION_DEFINITION:
+      return getDirectiveLocationForOperation(appliedTo.operation);
+
+    case _kinds.Kind.FIELD:
+      return _directiveLocation.DirectiveLocation.FIELD;
+
+    case _kinds.Kind.FRAGMENT_SPREAD:
+      return _directiveLocation.DirectiveLocation.FRAGMENT_SPREAD;
+
+    case _kinds.Kind.INLINE_FRAGMENT:
+      return _directiveLocation.DirectiveLocation.INLINE_FRAGMENT;
+
+    case _kinds.Kind.FRAGMENT_DEFINITION:
+      return _directiveLocation.DirectiveLocation.FRAGMENT_DEFINITION;
+
+    case _kinds.Kind.VARIABLE_DEFINITION:
+      return _directiveLocation.DirectiveLocation.VARIABLE_DEFINITION;
+
+    case _kinds.Kind.SCHEMA_DEFINITION:
+    case _kinds.Kind.SCHEMA_EXTENSION:
+      return _directiveLocation.DirectiveLocation.SCHEMA;
+
+    case _kinds.Kind.SCALAR_TYPE_DEFINITION:
+    case _kinds.Kind.SCALAR_TYPE_EXTENSION:
+      return _directiveLocation.DirectiveLocation.SCALAR;
+
+    case _kinds.Kind.OBJECT_TYPE_DEFINITION:
+    case _kinds.Kind.OBJECT_TYPE_EXTENSION:
+      return _directiveLocation.DirectiveLocation.OBJECT;
+
+    case _kinds.Kind.FIELD_DEFINITION:
+      return _directiveLocation.DirectiveLocation.FIELD_DEFINITION;
+
+    case _kinds.Kind.INTERFACE_TYPE_DEFINITION:
+    case _kinds.Kind.INTERFACE_TYPE_EXTENSION:
+      return _directiveLocation.DirectiveLocation.INTERFACE;
+
+    case _kinds.Kind.UNION_TYPE_DEFINITION:
+    case _kinds.Kind.UNION_TYPE_EXTENSION:
+      return _directiveLocation.DirectiveLocation.UNION;
+
+    case _kinds.Kind.ENUM_TYPE_DEFINITION:
+    case _kinds.Kind.ENUM_TYPE_EXTENSION:
+      return _directiveLocation.DirectiveLocation.ENUM;
+
+    case _kinds.Kind.ENUM_VALUE_DEFINITION:
+      return _directiveLocation.DirectiveLocation.ENUM_VALUE;
+
+    case _kinds.Kind.INPUT_OBJECT_TYPE_DEFINITION:
+    case _kinds.Kind.INPUT_OBJECT_TYPE_EXTENSION:
+      return _directiveLocation.DirectiveLocation.INPUT_OBJECT;
+
+    case _kinds.Kind.INPUT_VALUE_DEFINITION: {
+      const parentNode = ancestors[ancestors.length - 3];
+      'kind' in parentNode || (0, _invariant.invariant)(false);
+      return parentNode.kind === _kinds.Kind.INPUT_OBJECT_TYPE_DEFINITION
+        ? _directiveLocation.DirectiveLocation.INPUT_FIELD_DEFINITION
+        : _directiveLocation.DirectiveLocation.ARGUMENT_DEFINITION;
+    }
+    // Not reachable, all possible types have been considered.
+
+    /* c8 ignore next */
+
+    default:
+      false ||
+        (0, _invariant.invariant)(
+          false,
+          'Unexpected kind: ' + (0, _inspect.inspect)(appliedTo.kind),
+        );
+  }
+}
+
+function getDirectiveLocationForOperation(operation) {
+  switch (operation) {
+    case _ast.OperationTypeNode.QUERY:
+      return _directiveLocation.DirectiveLocation.QUERY;
+
+    case _ast.OperationTypeNode.MUTATION:
+      return _directiveLocation.DirectiveLocation.MUTATION;
+
+    case _ast.OperationTypeNode.SUBSCRIPTION:
+      return _directiveLocation.DirectiveLocation.SUBSCRIPTION;
+  }
+}