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node_modules/graphql/validation/rules/KnownDirectives.mjs

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+import { GraphQLError } from '../../error/GraphQLError';
+import { Kind } from '../../language/kinds';
+import { DirectiveLocation } from '../../language/directiveLocation';
+import { specifiedDirectives } from '../../type/directives';
+export function unknownDirectiveMessage(directiveName) {
+  return "Unknown directive \"".concat(directiveName, "\".");
+}
+export function misplacedDirectiveMessage(directiveName, location) {
+  return "Directive \"".concat(directiveName, "\" may not be used on ").concat(location, ".");
+}
+/**
+ * Known directives
+ *
+ * A GraphQL document is only valid if all `@directives` are known by the
+ * schema and legally positioned.
+ */
+
+export function KnownDirectives(context) {
+  var locationsMap = Object.create(null);
+  var schema = context.getSchema();
+  var definedDirectives = schema ? schema.getDirectives() : specifiedDirectives;
+
+  for (var _i2 = 0; _i2 < definedDirectives.length; _i2++) {
+    var directive = definedDirectives[_i2];
+    locationsMap[directive.name] = directive.locations;
+  }
+
+  var astDefinitions = context.getDocument().definitions;
+
+  for (var _i4 = 0; _i4 < astDefinitions.length; _i4++) {
+    var def = astDefinitions[_i4];
+
+    if (def.kind === Kind.DIRECTIVE_DEFINITION) {
+      locationsMap[def.name.value] = def.locations.map(function (name) {
+        return name.value;
+      });
+    }
+  }
+
+  return {
+    Directive: function Directive(node, key, parent, path, ancestors) {
+      var name = node.name.value;
+      var locations = locationsMap[name];
+
+      if (!locations) {
+        context.reportError(new GraphQLError(unknownDirectiveMessage(name), node));
+        return;
+      }
+
+      var candidateLocation = getDirectiveLocationForASTPath(ancestors);
+
+      if (candidateLocation && locations.indexOf(candidateLocation) === -1) {
+        context.reportError(new GraphQLError(misplacedDirectiveMessage(name, candidateLocation), node));
+      }
+    }
+  };
+}
+
+function getDirectiveLocationForASTPath(ancestors) {
+  var appliedTo = ancestors[ancestors.length - 1];
+
+  if (!Array.isArray(appliedTo)) {
+    switch (appliedTo.kind) {
+      case Kind.OPERATION_DEFINITION:
+        switch (appliedTo.operation) {
+          case 'query':
+            return DirectiveLocation.QUERY;
+
+          case 'mutation':
+            return DirectiveLocation.MUTATION;
+
+          case 'subscription':
+            return DirectiveLocation.SUBSCRIPTION;
+        }
+
+        break;
+
+      case Kind.FIELD:
+        return DirectiveLocation.FIELD;
+
+      case Kind.FRAGMENT_SPREAD:
+        return DirectiveLocation.FRAGMENT_SPREAD;
+
+      case Kind.INLINE_FRAGMENT:
+        return DirectiveLocation.INLINE_FRAGMENT;
+
+      case Kind.FRAGMENT_DEFINITION:
+        return DirectiveLocation.FRAGMENT_DEFINITION;
+
+      case Kind.VARIABLE_DEFINITION:
+        return DirectiveLocation.VARIABLE_DEFINITION;
+
+      case Kind.SCHEMA_DEFINITION:
+      case Kind.SCHEMA_EXTENSION:
+        return DirectiveLocation.SCHEMA;
+
+      case Kind.SCALAR_TYPE_DEFINITION:
+      case Kind.SCALAR_TYPE_EXTENSION:
+        return DirectiveLocation.SCALAR;
+
+      case Kind.OBJECT_TYPE_DEFINITION:
+      case Kind.OBJECT_TYPE_EXTENSION:
+        return DirectiveLocation.OBJECT;
+
+      case Kind.FIELD_DEFINITION:
+        return DirectiveLocation.FIELD_DEFINITION;
+
+      case Kind.INTERFACE_TYPE_DEFINITION:
+      case Kind.INTERFACE_TYPE_EXTENSION:
+        return DirectiveLocation.INTERFACE;
+
+      case Kind.UNION_TYPE_DEFINITION:
+      case Kind.UNION_TYPE_EXTENSION:
+        return DirectiveLocation.UNION;
+
+      case Kind.ENUM_TYPE_DEFINITION:
+      case Kind.ENUM_TYPE_EXTENSION:
+        return DirectiveLocation.ENUM;
+
+      case Kind.ENUM_VALUE_DEFINITION:
+        return DirectiveLocation.ENUM_VALUE;
+
+      case Kind.INPUT_OBJECT_TYPE_DEFINITION:
+      case Kind.INPUT_OBJECT_TYPE_EXTENSION:
+        return DirectiveLocation.INPUT_OBJECT;
+
+      case Kind.INPUT_VALUE_DEFINITION:
+        {
+          var parentNode = ancestors[ancestors.length - 3];
+          return parentNode.kind === Kind.INPUT_OBJECT_TYPE_DEFINITION ? DirectiveLocation.INPUT_FIELD_DEFINITION : DirectiveLocation.ARGUMENT_DEFINITION;
+        }
+    }
+  }
+}