Update - This is an automated commit

1 files changed, 1000 insertions, 0 deletions

diff --git a/school/node_modules/graphql/language/experimentalOnlineParser/grammar.js.flow b/school/node_modules/graphql/language/experimentalOnlineParser/grammar.js.flow
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+++ b/school/node_modules/graphql/language/experimentalOnlineParser/grammar.js.flow
@@ -0,0 +1,1000 @@
+// @flow strict
+export type GraphQLGrammarType = {|
+  [name: string]: GraphQLGrammarRule,
+|};
+export type GraphQLGrammarRuleName = string;
+export type GraphQLGrammarRuleConstraint =
+  | GraphQLGrammarTokenConstraint
+  | GraphQLGrammarOfTypeConstraint
+  | GraphQLGrammarListOfTypeConstraint
+  | GraphQLGrammarPeekConstraint;
+export type GraphQLGrammarConstraintsSet = Array<
+  GraphQLGrammarRuleName | GraphQLGrammarRuleConstraint,
+>;
+export type GraphQLGrammarRule =
+  | GraphQLGrammarRuleName
+  | GraphQLGrammarRuleConstraint
+  | GraphQLGrammarConstraintsSet;
+export interface GraphQLGrammarBaseRuleConstraint {
+  butNot?:
+    | ?GraphQLGrammarTokenConstraint
+    | ?Array<GraphQLGrammarTokenConstraint>;
+  optional?: boolean;
+  eatNextOnFail?: boolean;
+}
+export interface GraphQLGrammarTokenConstraint
+  extends GraphQLGrammarBaseRuleConstraint {
+  token:
+    | '!'
+    | '$'
+    | '&'
+    | '('
+    | ')'
+    | '...'
+    | ':'
+    | '='
+    | '@'
+    | '['
+    | ']'
+    | '{'
+    | '}'
+    | '|'
+    | 'Name'
+    | 'Int'
+    | 'Float'
+    | 'String'
+    | 'BlockString'
+    | 'Comment';
+  ofValue?: ?string;
+  oneOf?: ?Array<string>;
+  tokenName?: string;
+  definitionName?: boolean;
+  typeName?: boolean;
+}
+export interface GraphQLGrammarOfTypeConstraint
+  extends GraphQLGrammarBaseRuleConstraint {
+  ofType: GraphQLGrammarRule;
+  tokenName?: string;
+}
+export interface GraphQLGrammarListOfTypeConstraint
+  extends GraphQLGrammarBaseRuleConstraint {
+  listOfType: GraphQLGrammarRuleName;
+}
+export interface GraphQLGrammarPeekConstraint
+  extends GraphQLGrammarBaseRuleConstraint {
+  peek: Array<GraphQLGrammarPeekConstraintCondition>;
+}
+export interface GraphQLGrammarPeekConstraintCondition {
+  ifCondition: GraphQLGrammarTokenConstraint;
+  expect: GraphQLGrammarRule;
+  end?: boolean;
+}
+
+const grammar: GraphQLGrammarType = ({
+  Name: { token: 'Name' },
+  String: { token: 'String' },
+  BlockString: { token: 'BlockString' },
+
+  Document: { listOfType: 'Definition' },
+  Definition: {
+    peek: [
+      {
+        ifCondition: {
+          token: 'Name',
+          oneOf: ['query', 'mutation', 'subscription'],
+        },
+        expect: 'OperationDefinition',
+      },
+      {
+        ifCondition: { token: 'Name', ofValue: 'fragment' },
+        expect: 'FragmentDefinition',
+      },
+      {
+        ifCondition: {
+          token: 'Name',
+          oneOf: [
+            'schema',
+            'scalar',
+            'type',
+            'interface',
+            'union',
+            'enum',
+            'input',
+            'directive',
+          ],
+        },
+        expect: 'TypeSystemDefinition',
+      },
+      {
+        ifCondition: { token: 'Name', ofValue: 'extend' },
+        expect: 'TypeSystemExtension',
+      },
+      {
+        ifCondition: { token: '{' },
+        expect: 'OperationDefinition',
+      },
+      {
+        ifCondition: 'String',
+        expect: 'TypeSystemDefinition',
+      },
+      {
+        ifCondition: 'BlockString',
+        expect: 'TypeSystemDefinition',
+      },
+    ],
+  },
+
+  OperationDefinition: {
+    peek: [
+      {
+        ifCondition: { token: '{' },
+        expect: 'SelectionSet',
+      },
+      {
+        ifCondition: {
+          token: 'Name',
+          oneOf: ['query', 'mutation', 'subscription'],
+        },
+        expect: [
+          'OperationType',
+          {
+            token: 'Name',
+            optional: true,
+            tokenName: 'OperationName',
+            definitionName: true,
+          },
+          { ofType: 'VariableDefinitions', optional: true },
+          { ofType: 'Directives', optional: true },
+          'SelectionSet',
+        ],
+      },
+    ],
+  },
+  OperationType: {
+    ofType: 'OperationTypeName',
+  },
+  OperationTypeName: {
+    token: 'Name',
+    oneOf: ['query', 'mutation', 'subscription'],
+    definitionName: true,
+  },
+  SelectionSet: [{ token: '{' }, { listOfType: 'Selection' }, { token: '}' }],
+  Selection: {
+    peek: [
+      {
+        ifCondition: { token: '...' },
+        expect: 'Fragment',
+      },
+      {
+        ifCondition: { token: 'Name' },
+        expect: 'Field',
+      },
+    ],
+  },
+
+  Field: [
+    {
+      ofType: 'Alias',
+      optional: true,
+      eatNextOnFail: true,
+      definitionName: true,
+    },
+    { token: 'Name', tokenName: 'FieldName', definitionName: true },
+    { ofType: 'Arguments', optional: true },
+    { ofType: 'Directives', optional: true },
+    { ofType: 'SelectionSet', optional: true },
+  ],
+
+  Arguments: [{ token: '(' }, { listOfType: 'Argument' }, { token: ')' }],
+  Argument: [
+    { token: 'Name', tokenName: 'ArgumentName', definitionName: true },
+    { token: ':' },
+    'Value',
+  ],
+
+  Alias: [
+    { token: 'Name', tokenName: 'AliasName', definitionName: true },
+    { token: ':' },
+  ],
+
+  Fragment: [
+    { token: '...' },
+    {
+      peek: [
+        {
+          ifCondition: 'FragmentName',
+          expect: 'FragmentSpread',
+        },
+        {
+          ifCondition: { token: 'Name', ofValue: 'on' },
+          expect: 'InlineFragment',
+        },
+        {
+          ifCondition: { token: '@' },
+          expect: 'InlineFragment',
+        },
+        {
+          ifCondition: { token: '{' },
+          expect: 'InlineFragment',
+        },
+      ],
+    },
+  ],
+
+  FragmentSpread: ['FragmentName', { ofType: 'Directives', optional: true }],
+  FragmentDefinition: [
+    {
+      token: 'Name',
+      ofValue: 'fragment',
+      tokenName: 'FragmentDefinitionKeyword',
+    },
+    'FragmentName',
+    'TypeCondition',
+    { ofType: 'Directives', optional: true },
+    'SelectionSet',
+  ],
+  FragmentName: {
+    token: 'Name',
+    butNot: { token: 'Name', ofValue: 'on' },
+    definitionName: true,
+  },
+
+  TypeCondition: [
+    { token: 'Name', ofValue: 'on', tokenName: 'OnKeyword' },
+    'TypeName',
+  ],
+
+  InlineFragment: [
+    { ofType: 'TypeCondition', optional: true },
+    { ofType: 'Directives', optional: true },
+    'SelectionSet',
+  ],
+
+  Value: {
+    peek: [
+      {
+        ifCondition: { token: '$' },
+        expect: 'Variable',
+      },
+      {
+        ifCondition: 'IntValue',
+        expect: { ofType: 'IntValue', tokenName: 'NumberValue' },
+      },
+      {
+        ifCondition: 'FloatValue',
+        expect: { ofType: 'FloatValue', tokenName: 'NumberValue' },
+      },
+      {
+        ifCondition: 'BooleanValue',
+        expect: { ofType: 'BooleanValue', tokenName: 'BooleanValue' },
+      },
+      {
+        ifCondition: 'EnumValue',
+        expect: { ofType: 'EnumValue', tokenName: 'EnumValue' },
+      },
+      {
+        ifCondition: 'String',
+        expect: { ofType: 'String', tokenName: 'StringValue' },
+      },
+      {
+        ifCondition: 'BlockString',
+        expect: { ofType: 'BlockString', tokenName: 'StringValue' },
+      },
+      {
+        ifCondition: 'NullValue',
+        expect: { ofType: 'NullValue', tokenName: 'NullValue' },
+      },
+      {
+        ifCondition: { token: '[' },
+        expect: 'ListValue',
+      },
+      {
+        ifCondition: { token: '{' },
+        expect: 'ObjectValue',
+      },
+    ],
+  },
+
+  ConstValue: {
+    peek: [
+      {
+        ifCondition: 'IntValue',
+        expect: { ofType: 'IntValue' },
+      },
+      {
+        ifCondition: 'FloatValue',
+        expect: { ofType: 'FloatValue' },
+      },
+      {
+        ifCondition: 'BooleanValue',
+        expect: 'BooleanValue',
+      },
+      {
+        ifCondition: 'EnumValue',
+        expect: 'EnumValue',
+      },
+      {
+        ifCondition: 'String',
+        expect: { ofType: 'String', tokenName: 'StringValue' },
+      },
+      {
+        ifCondition: 'BlockString',
+        expect: { token: 'BlockString', tokenName: 'StringValue' },
+      },
+      {
+        ifCondition: 'NullValue',
+        expect: 'NullValue',
+      },
+      {
+        ifCondition: { token: '[' },
+        expect: 'ConstListValue',
+      },
+      {
+        ifCondition: { token: '{' },
+        expect: 'ObjectValue',
+      },
+    ],
+  },
+
+  IntValue: { token: 'Int' },
+
+  FloatValue: { token: 'Float' },
+
+  StringValue: {
+    peek: [
+      {
+        ifCondition: { token: 'String' },
+        expect: { token: 'String', tokenName: 'StringValue' },
+      },
+      {
+        ifCondition: { token: 'BlockString' },
+        expect: { token: 'BlockString', tokenName: 'StringValue' },
+      },
+    ],
+  },
+
+  BooleanValue: {
+    token: 'Name',
+    oneOf: ['true', 'false'],
+    tokenName: 'BooleanValue',
+  },
+
+  NullValue: {
+    token: 'Name',
+    ofValue: 'null',
+    tokenName: 'NullValue',
+  },
+
+  EnumValue: {
+    token: 'Name',
+    butNot: { token: 'Name', oneOf: ['null', 'true', 'false'] },
+    tokenName: 'EnumValue',
+  },
+
+  ListValue: [
+    { token: '[' },
+    { listOfType: 'Value', optional: true },
+    { token: ']' },
+  ],
+
+  ConstListValue: [
+    { token: '[' },
+    { listOfType: 'ConstValue', optional: true },
+    { token: ']' },
+  ],
+
+  ObjectValue: [
+    { token: '{' },
+    { listOfType: 'ObjectField', optional: true },
+    { token: '}' },
+  ],
+  ObjectField: [
+    { token: 'Name', tokenName: 'ObjectFieldName' },
+    { token: ':' },
+    { ofType: 'ConstValue' },
+  ],
+
+  Variable: [
+    { token: '$', tokenName: 'VariableName' },
+    { token: 'Name', tokenName: 'VariableName' },
+  ],
+  VariableDefinitions: [
+    { token: '(' },
+    { listOfType: 'VariableDefinition' },
+    { token: ')' },
+  ],
+  VariableDefinition: [
+    'Variable',
+    { token: ':' },
+    'Type',
+    { ofType: 'DefaultValue', optional: true },
+  ],
+  DefaultValue: [{ token: '=' }, 'ConstValue'],
+
+  TypeName: { token: 'Name', tokenName: 'TypeName', typeName: true },
+
+  Type: {
+    peek: [
+      {
+        ifCondition: { token: 'Name' },
+        expect: ['TypeName', { token: '!', optional: true }],
+      },
+      {
+        ifCondition: { token: '[' },
+        expect: 'ListType',
+      },
+    ],
+  },
+  ListType: [
+    { token: '[' },
+    { listOfType: 'Type' },
+    { token: ']' },
+    { token: '!', optional: true },
+  ],
+
+  Directives: { listOfType: 'Directive' },
+  Directive: [
+    { token: '@', tokenName: 'DirectiveName' },
+    { token: 'Name', tokenName: 'DirectiveName' },
+    { ofType: 'Arguments', optional: true },
+  ],
+
+  TypeSystemDefinition: [
+    { ofType: 'Description', optional: true },
+    {
+      peek: [
+        {
+          ifCondition: {
+            target: 'Name',
+            ofValue: 'schema',
+          },
+          expect: 'SchemaDefinition',
+        },
+        {
+          ifCondition: {
+            target: 'Name',
+            ofValue: 'scalar',
+          },
+          expect: 'ScalarTypeDefinition',
+        },
+        {
+          ifCondition: {
+            target: 'Name',
+            ofValue: 'type',
+          },
+          expect: 'ObjectTypeDefinition',
+        },
+        {
+          ifCondition: {
+            target: 'Name',
+            ofValue: 'interface',
+          },
+          expect: 'InterfaceTypeDefinition',
+        },
+        {
+          ifCondition: {
+            target: 'Name',
+            ofValue: 'union',
+          },
+          expect: 'UnionTypeDefinition',
+        },
+        {
+          ifCondition: {
+            target: 'Name',
+            ofValue: 'enum',
+          },
+          expect: 'EnumTypeDefinition',
+        },
+        {
+          ifCondition: {
+            target: 'Name',
+            ofValue: 'input',
+          },
+          expect: 'InputObjectTypeDefinition',
+        },
+        {
+          ifCondition: {
+            target: 'Name',
+            ofValue: 'directive',
+          },
+          expect: 'DirectiveDefinition',
+        },
+      ],
+    },
+  ],
+
+  TypeSystemExtension: {
+    peek: [
+      {
+        ifCondition: {
+          target: 'Name',
+          ofValue: 'schema',
+        },
+        expect: 'SchemaExtension',
+      },
+      {
+        ifCondition: {
+          target: 'Name',
+          ofValue: 'scalar',
+        },
+        expect: 'ScalarTypeExtension',
+      },
+      {
+        ifCondition: {
+          target: 'Name',
+          ofValue: 'type',
+        },
+        expect: 'ObjectTypeExtension',
+      },
+      {
+        ifCondition: {
+          target: 'Name',
+          ofValue: 'interface',
+        },
+        expect: 'InterfaceTypeExtension',
+      },
+      {
+        ifCondition: {
+          target: 'Name',
+          ofValue: 'union',
+        },
+        expect: 'UnionTypeExtension',
+      },
+      {
+        ifCondition: {
+          target: 'Name',
+          ofValue: 'enum',
+        },
+        expect: 'EnumTypeExtension',
+      },
+      {
+        ifCondition: {
+          target: 'Name',
+          ofValue: 'input',
+        },
+        expect: 'InputObjectTypeExtension',
+      },
+    ],
+  },
+
+  SchemaDefinition: [
+    {
+      token: 'Name',
+      ofValue: 'schema',
+      tokenName: 'SchemaDefinitionKeyword',
+    },
+    { ofType: 'Directives', optional: true },
+    { token: '{' },
+    { listOfType: 'RootOperationTypeDefinition' },
+    { token: '}' },
+  ],
+  RootOperationTypeDefinition: [
+    'OperationType',
+    { token: ':' },
+    { token: 'Name', tokenName: 'OperationTypeDefinitionName' },
+  ],
+
+  SchemaExtension: [
+    { token: 'Name', ofValue: 'extend' },
+    { token: 'Name', ofValue: 'schema' },
+    'Name',
+    {
+      peek: [
+        {
+          ifCondition: { token: '@' },
+          expect: [
+            'Directives',
+            {
+              ofType: [
+                { token: '{' },
+                { listOfType: 'RootOperationTypeDefinition' },
+                { token: '}' },
+              ],
+              optional: true,
+            },
+          ],
+        },
+        {
+          ifCondition: { token: '{' },
+          expect: [
+            { token: '{' },
+            { listOfType: 'RootOperationTypeDefinition' },
+            { token: '}' },
+          ],
+        },
+      ],
+    },
+  ],
+
+  Description: 'StringValue',
+
+  ScalarTypeDefinition: [
+    { ofType: 'Description', optional: true },
+    {
+      token: 'Name',
+      ofValue: 'scalar',
+      tokenName: 'ScalarDefinitionKeyword',
+    },
+    'TypeName',
+    { ofType: 'Directives', optional: true },
+  ],
+
+  ScalarTypeExtension: [
+    {
+      token: 'Name',
+      ofValue: 'extend',
+      tokenName: 'ExtendDefinitionKeyword',
+    },
+    {
+      token: 'Name',
+      ofValue: 'scalar',
+      tokenName: 'ScalarDefinitionKeyword',
+    },
+    'TypeName',
+    'Directives',
+  ],
+
+  ObjectTypeDefinition: [
+    { ofType: 'Description', optional: true },
+    {
+      token: 'Name',
+      ofValue: 'type',
+      tokenName: 'TypeDefinitionKeyword',
+    },
+    'TypeName',
+    { ofType: 'ImplementsInterfaces', optional: true },
+    { ofType: 'Directives', optional: true },
+    { ofType: 'FieldsDefinition', optional: true },
+  ],
+  ImplementsInterfaces: [
+    {
+      token: 'Name',
+      ofValue: 'implements',
+      tokenName: 'ImplementsKeyword',
+    },
+    { token: '&', optional: true },
+    'TypeName',
+    {
+      listOfType: 'ImplementsAdditionalInterfaceName',
+      optional: true,
+    },
+  ],
+  ImplementsAdditionalInterfaceName: [{ token: '&' }, 'TypeName'],
+  FieldsDefinition: [
+    { token: '{' },
+    { listOfType: 'FieldDefinition' },
+    { token: '}' },
+  ],
+  FieldDefinition: [
+    { ofType: 'Description', optional: true },
+    { token: 'Name', tokenName: 'AliasName', definitionName: true },
+    { ofType: 'ArgumentsDefinition', optional: true },
+    { token: ':' },
+    'Type',
+    { ofType: 'Directives', optional: true },
+  ],
+
+  ArgumentsDefinition: [
+    { token: '(' },
+    { listOfType: 'InputValueDefinition' },
+    { token: ')' },
+  ],
+  InputValueDefinition: [
+    { ofType: 'Description', optional: true },
+    { token: 'Name', tokenName: 'ArgumentName' },
+    { token: ':' },
+    'Type',
+    { ofType: 'DefaultValue', optional: true },
+    { ofType: 'Directives', optional: true },
+  ],
+
+  ObjectTypeExtension: [
+    {
+      token: 'Name',
+      ofValue: 'extend',
+      tokenName: 'ExtendDefinitionKeyword',
+    },
+    {
+      token: 'Name',
+      ofValue: 'type',
+      tokenName: 'TypeDefinitionKeyword',
+    },
+    'TypeName',
+    {
+      peek: [
+        {
+          ifCondition: { token: 'Name', ofValue: 'interface' },
+          expect: [
+            'ImplementsInterfaces',
+            {
+              peek: [
+                {
+                  ifCondition: { token: '@' },
+                  expect: [
+                    'Directives',
+                    { ofType: 'FieldsDefinition', optional: true },
+                  ],
+                },
+                {
+                  ifCondition: { token: '{' },
+                  expect: 'FieldsDefinition',
+                },
+              ],
+              optional: true,
+            },
+          ],
+        },
+        {
+          ifCondition: { token: '@' },
+          expect: [
+            'Directives',
+            { ofType: 'FieldsDefinition', optional: true },
+          ],
+        },
+        {
+          ifCondition: { token: '{' },
+          expect: 'FieldsDefinition',
+        },
+      ],
+    },
+  ],
+
+  InterfaceTypeDefinition: [
+    { ofType: 'Description', optional: true },
+    {
+      token: 'Name',
+      ofValue: 'interface',
+      tokenName: 'InterfaceDefinitionKeyword',
+    },
+    'TypeName',
+    { ofType: 'Directives', optional: true },
+    { ofType: 'FieldsDefinition', optional: true },
+  ],
+
+  InterfaceTypeExtension: [
+    {
+      token: 'Name',
+      ofValue: 'extend',
+      tokenName: 'ExtendDefinitionKeyword',
+    },
+    {
+      token: 'Name',
+      ofValue: 'interface',
+      tokenName: 'InterfaceDefinitionKeyword',
+    },
+    'TypeName',
+    {
+      peek: [
+        {
+          ifCondition: { token: '@' },
+          expect: [
+            'Directives',
+            { ofType: 'FieldsDefinition', optional: true },
+          ],
+        },
+        {
+          ifCondition: { token: '{' },
+          expect: 'FieldsDefinition',
+        },
+      ],
+    },
+  ],
+
+  UnionTypeDefinition: [
+    { ofType: 'Description', optional: true },
+    {
+      token: 'Name',
+      ofValue: 'union',
+      tokenName: 'UnionDefinitionKeyword',
+    },
+    'TypeName',
+    { ofType: 'Directives', optional: true },
+    { ofType: 'UnionMemberTypes', optional: true },
+  ],
+
+  UnionMemberTypes: [
+    { token: '=' },
+    { token: '|', optional: true },
+    'Name',
+    {
+      listOfType: 'UnionMemberAdditionalTypeName',
+      optional: true,
+    },
+  ],
+
+  UnionMemberAdditionalTypeName: [{ token: '|' }, 'TypeName'],
+
+  UnionTypeExtension: [
+    {
+      token: 'Name',
+      ofValue: 'extend',
+      tokenName: 'ExtendDefinitionKeyword',
+    },
+    {
+      token: 'Name',
+      ofValue: 'union',
+      tokenName: 'UnionDefinitionKeyword',
+    },
+    'TypeName',
+    {
+      peek: [
+        {
+          ifCondition: { token: '@' },
+          expect: [
+            'Directives',
+            { ofType: 'UnionMemberTypes', optional: true },
+          ],
+        },
+        {
+          ifCondition: { token: '=' },
+          expect: 'UnionMemberTypes',
+        },
+      ],
+    },
+  ],
+
+  EnumTypeDefinition: [
+    { ofType: 'Description', optional: true },
+    {
+      token: 'Name',
+      ofValue: 'enum',
+      tokenName: 'EnumDefinitionKeyword',
+    },
+    'TypeName',
+    { ofType: 'Directives', optional: true },
+    { ofType: 'EnumValuesDefinition', optional: true },
+  ],
+  EnumValuesDefinition: [
+    { token: '{' },
+    { listOfType: 'EnumValueDefinition' },
+    { token: '}' },
+  ],
+  EnumValueDefinition: [
+    { ofType: 'Description', optional: true },
+    'EnumValue',
+    { ofType: 'Directives', optional: true },
+  ],
+
+  EnumTypeExtension: [
+    {
+      token: 'Name',
+      ofValue: 'extend',
+      tokenName: 'ExtendDefinitionKeyword',
+    },
+    {
+      token: 'Name',
+      ofValue: 'enum',
+      tokenName: 'EnumDefinitionKeyword',
+    },
+    'TypeName',
+    {
+      peek: [
+        {
+          ifCondition: { token: '@' },
+          expect: [
+            'Directives',
+            { ofType: 'EnumValuesDefinition', optional: true },
+          ],
+        },
+        {
+          ifCondition: { token: '{' },
+          expect: 'EnumValuesDefinition',
+        },
+      ],
+    },
+  ],
+
+  InputObjectTypeDefinition: [
+    { ofType: 'Description', optional: true },
+    {
+      token: 'Name',
+      ofValue: 'input',
+      tokenName: 'InputDefinitionKeyword',
+    },
+    'TypeName',
+    { ofType: 'Directives', optional: true },
+    { ofType: 'InputFieldsDefinition', optional: true },
+  ],
+  InputFieldsDefinition: [
+    { token: '{' },
+    { listOfType: 'InputValueDefinition' },
+    { token: '}' },
+  ],
+
+  InputObjectTypeExtension: [
+    {
+      token: 'Name',
+      ofValue: 'extend',
+      tokenName: 'ExtendDefinitionKeyword',
+    },
+    {
+      token: 'Name',
+      ofValue: 'input',
+      tokenName: 'InputDefinitionKeyword',
+    },
+    'TypeName',
+    {
+      peek: [
+        {
+          ifCondition: { token: '@' },
+          expect: [
+            'Directives',
+            { ofType: 'InputFieldsDefinition', optional: true },
+          ],
+        },
+        {
+          ifCondition: { token: '{' },
+          expect: 'InputFieldsDefinition',
+        },
+      ],
+    },
+  ],
+
+  DirectiveDefinition: [
+    { ofType: 'Description', optional: true },
+    {
+      token: 'Name',
+      ofValue: 'directive',
+      tokenName: 'DirectiveDefinitionKeyword',
+    },
+    { token: '@', tokenName: 'DirectiveName' },
+    { token: 'Name', tokenName: 'DirectiveName' },
+    { ofType: 'ArgumentsDefinition', optional: true },
+    { token: 'Name', ofValue: 'on', tokenName: 'OnKeyword' },
+    'DirectiveLocations',
+  ],
+  DirectiveLocations: [
+    { token: '|', optional: true },
+    'DirectiveLocation',
+    {
+      listOfType: 'DirectiveLocationAdditionalName',
+      optional: true,
+    },
+  ],
+  DirectiveLocationAdditionalName: [{ token: '|' }, 'DirectiveLocation'],
+  DirectiveLocation: {
+    peek: [
+      {
+        ifCondition: 'ExecutableDirectiveLocation',
+        expect: 'ExecutableDirectiveLocation',
+      },
+      {
+        ifCondition: 'TypeSystemDirectiveLocation',
+        expect: 'TypeSystemDirectiveLocation',
+      },
+    ],
+  },
+  ExecutableDirectiveLocation: {
+    token: 'Name',
+    oneOf: [
+      'QUERY',
+      'MUTATION',
+      'SUBSCRIPTION',
+      'FIELD',
+      'FRAGMENT_DEFINITION',
+      'FRAGMENT_SPREAD',
+      'INLINE_FRAGMENT',
+    ],
+    tokenName: 'EnumValue',
+  },
+  TypeSystemDirectiveLocation: {
+    token: 'Name',
+    oneOf: [
+      'SCHEMA',
+      'SCALAR',
+      'OBJECT',
+      'FIELD_DEFINITION',
+      'ARGUMENT_DEFINITION',
+      'INTERFACE',
+      'UNION',
+      'ENUM',
+      'ENUM_VALUE',
+      'INPUT_OBJECT',
+      'INPUT_FIELD_DEFINITION',
+    ],
+    tokenName: 'EnumValue',
+  },
+  // FIXME: enforce proper typing
+}: any);
+
+export default grammar;