Update - This is an automated commit

1 files changed, 1566 insertions, 0 deletions

diff --git a/school/node_modules/graphql/language/parser.js b/school/node_modules/graphql/language/parser.js
new file mode 100644
index 0000000..cef9a77
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+++ b/school/node_modules/graphql/language/parser.js
@@ -0,0 +1,1566 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.parse = parse;
+exports.parseValue = parseValue;
+exports.parseType = parseType;
+exports.Parser = void 0;
+
+var _syntaxError = require("../error/syntaxError.js");
+
+var _kinds = require("./kinds.js");
+
+var _ast = require("./ast.js");
+
+var _tokenKind = require("./tokenKind.js");
+
+var _source = require("./source.js");
+
+var _directiveLocation = require("./directiveLocation.js");
+
+var _lexer = require("./lexer.js");
+
+/**
+ * Given a GraphQL source, parses it into a Document.
+ * Throws GraphQLError if a syntax error is encountered.
+ */
+function parse(source, options) {
+  var parser = new Parser(source, options);
+  return parser.parseDocument();
+}
+/**
+ * Given a string containing a GraphQL value (ex. `[42]`), parse the AST for
+ * that value.
+ * Throws GraphQLError if a syntax error is encountered.
+ *
+ * This is useful within tools that operate upon GraphQL Values directly and
+ * in isolation of complete GraphQL documents.
+ *
+ * Consider providing the results to the utility function: valueFromAST().
+ */
+
+
+function parseValue(source, options) {
+  var parser = new Parser(source, options);
+  parser.expectToken(_tokenKind.TokenKind.SOF);
+  var value = parser.parseValueLiteral(false);
+  parser.expectToken(_tokenKind.TokenKind.EOF);
+  return value;
+}
+/**
+ * Given a string containing a GraphQL Type (ex. `[Int!]`), parse the AST for
+ * that type.
+ * Throws GraphQLError if a syntax error is encountered.
+ *
+ * This is useful within tools that operate upon GraphQL Types directly and
+ * in isolation of complete GraphQL documents.
+ *
+ * Consider providing the results to the utility function: typeFromAST().
+ */
+
+
+function parseType(source, options) {
+  var parser = new Parser(source, options);
+  parser.expectToken(_tokenKind.TokenKind.SOF);
+  var type = parser.parseTypeReference();
+  parser.expectToken(_tokenKind.TokenKind.EOF);
+  return type;
+}
+/**
+ * This class is exported only to assist people in implementing their own parsers
+ * without duplicating too much code and should be used only as last resort for cases
+ * such as experimental syntax or if certain features could not be contributed upstream.
+ *
+ * It is still part of the internal API and is versioned, so any changes to it are never
+ * considered breaking changes. If you still need to support multiple versions of the
+ * library, please use the `versionInfo` variable for version detection.
+ *
+ * @internal
+ */
+
+
+var Parser = /*#__PURE__*/function () {
+  function Parser(source, options) {
+    var sourceObj = (0, _source.isSource)(source) ? source : new _source.Source(source);
+    this._lexer = new _lexer.Lexer(sourceObj);
+    this._options = options;
+  }
+  /**
+   * Converts a name lex token into a name parse node.
+   */
+
+
+  var _proto = Parser.prototype;
+
+  _proto.parseName = function parseName() {
+    var token = this.expectToken(_tokenKind.TokenKind.NAME);
+    return {
+      kind: _kinds.Kind.NAME,
+      value: token.value,
+      loc: this.loc(token)
+    };
+  } // Implements the parsing rules in the Document section.
+
+  /**
+   * Document : Definition+
+   */
+  ;
+
+  _proto.parseDocument = function parseDocument() {
+    var start = this._lexer.token;
+    return {
+      kind: _kinds.Kind.DOCUMENT,
+      definitions: this.many(_tokenKind.TokenKind.SOF, this.parseDefinition, _tokenKind.TokenKind.EOF),
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * Definition :
+   *   - ExecutableDefinition
+   *   - TypeSystemDefinition
+   *   - TypeSystemExtension
+   *
+   * ExecutableDefinition :
+   *   - OperationDefinition
+   *   - FragmentDefinition
+   */
+  ;
+
+  _proto.parseDefinition = function parseDefinition() {
+    if (this.peek(_tokenKind.TokenKind.NAME)) {
+      switch (this._lexer.token.value) {
+        case 'query':
+        case 'mutation':
+        case 'subscription':
+          return this.parseOperationDefinition();
+
+        case 'fragment':
+          return this.parseFragmentDefinition();
+
+        case 'schema':
+        case 'scalar':
+        case 'type':
+        case 'interface':
+        case 'union':
+        case 'enum':
+        case 'input':
+        case 'directive':
+          return this.parseTypeSystemDefinition();
+
+        case 'extend':
+          return this.parseTypeSystemExtension();
+      }
+    } else if (this.peek(_tokenKind.TokenKind.BRACE_L)) {
+      return this.parseOperationDefinition();
+    } else if (this.peekDescription()) {
+      return this.parseTypeSystemDefinition();
+    }
+
+    throw this.unexpected();
+  } // Implements the parsing rules in the Operations section.
+
+  /**
+   * OperationDefinition :
+   *  - SelectionSet
+   *  - OperationType Name? VariableDefinitions? Directives? SelectionSet
+   */
+  ;
+
+  _proto.parseOperationDefinition = function parseOperationDefinition() {
+    var start = this._lexer.token;
+
+    if (this.peek(_tokenKind.TokenKind.BRACE_L)) {
+      return {
+        kind: _kinds.Kind.OPERATION_DEFINITION,
+        operation: 'query',
+        name: undefined,
+        variableDefinitions: [],
+        directives: [],
+        selectionSet: this.parseSelectionSet(),
+        loc: this.loc(start)
+      };
+    }
+
+    var operation = this.parseOperationType();
+    var name;
+
+    if (this.peek(_tokenKind.TokenKind.NAME)) {
+      name = this.parseName();
+    }
+
+    return {
+      kind: _kinds.Kind.OPERATION_DEFINITION,
+      operation: operation,
+      name: name,
+      variableDefinitions: this.parseVariableDefinitions(),
+      directives: this.parseDirectives(false),
+      selectionSet: this.parseSelectionSet(),
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * OperationType : one of query mutation subscription
+   */
+  ;
+
+  _proto.parseOperationType = function parseOperationType() {
+    var operationToken = this.expectToken(_tokenKind.TokenKind.NAME);
+
+    switch (operationToken.value) {
+      case 'query':
+        return 'query';
+
+      case 'mutation':
+        return 'mutation';
+
+      case 'subscription':
+        return 'subscription';
+    }
+
+    throw this.unexpected(operationToken);
+  }
+  /**
+   * VariableDefinitions : ( VariableDefinition+ )
+   */
+  ;
+
+  _proto.parseVariableDefinitions = function parseVariableDefinitions() {
+    return this.optionalMany(_tokenKind.TokenKind.PAREN_L, this.parseVariableDefinition, _tokenKind.TokenKind.PAREN_R);
+  }
+  /**
+   * VariableDefinition : Variable : Type DefaultValue? Directives[Const]?
+   */
+  ;
+
+  _proto.parseVariableDefinition = function parseVariableDefinition() {
+    var start = this._lexer.token;
+    return {
+      kind: _kinds.Kind.VARIABLE_DEFINITION,
+      variable: this.parseVariable(),
+      type: (this.expectToken(_tokenKind.TokenKind.COLON), this.parseTypeReference()),
+      defaultValue: this.expectOptionalToken(_tokenKind.TokenKind.EQUALS) ? this.parseValueLiteral(true) : undefined,
+      directives: this.parseDirectives(true),
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * Variable : $ Name
+   */
+  ;
+
+  _proto.parseVariable = function parseVariable() {
+    var start = this._lexer.token;
+    this.expectToken(_tokenKind.TokenKind.DOLLAR);
+    return {
+      kind: _kinds.Kind.VARIABLE,
+      name: this.parseName(),
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * SelectionSet : { Selection+ }
+   */
+  ;
+
+  _proto.parseSelectionSet = function parseSelectionSet() {
+    var start = this._lexer.token;
+    return {
+      kind: _kinds.Kind.SELECTION_SET,
+      selections: this.many(_tokenKind.TokenKind.BRACE_L, this.parseSelection, _tokenKind.TokenKind.BRACE_R),
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * Selection :
+   *   - Field
+   *   - FragmentSpread
+   *   - InlineFragment
+   */
+  ;
+
+  _proto.parseSelection = function parseSelection() {
+    return this.peek(_tokenKind.TokenKind.SPREAD) ? this.parseFragment() : this.parseField();
+  }
+  /**
+   * Field : Alias? Name Arguments? Directives? SelectionSet?
+   *
+   * Alias : Name :
+   */
+  ;
+
+  _proto.parseField = function parseField() {
+    var start = this._lexer.token;
+    var nameOrAlias = this.parseName();
+    var alias;
+    var name;
+
+    if (this.expectOptionalToken(_tokenKind.TokenKind.COLON)) {
+      alias = nameOrAlias;
+      name = this.parseName();
+    } else {
+      name = nameOrAlias;
+    }
+
+    return {
+      kind: _kinds.Kind.FIELD,
+      alias: alias,
+      name: name,
+      arguments: this.parseArguments(false),
+      directives: this.parseDirectives(false),
+      selectionSet: this.peek(_tokenKind.TokenKind.BRACE_L) ? this.parseSelectionSet() : undefined,
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * Arguments[Const] : ( Argument[?Const]+ )
+   */
+  ;
+
+  _proto.parseArguments = function parseArguments(isConst) {
+    var item = isConst ? this.parseConstArgument : this.parseArgument;
+    return this.optionalMany(_tokenKind.TokenKind.PAREN_L, item, _tokenKind.TokenKind.PAREN_R);
+  }
+  /**
+   * Argument[Const] : Name : Value[?Const]
+   */
+  ;
+
+  _proto.parseArgument = function parseArgument() {
+    var start = this._lexer.token;
+    var name = this.parseName();
+    this.expectToken(_tokenKind.TokenKind.COLON);
+    return {
+      kind: _kinds.Kind.ARGUMENT,
+      name: name,
+      value: this.parseValueLiteral(false),
+      loc: this.loc(start)
+    };
+  };
+
+  _proto.parseConstArgument = function parseConstArgument() {
+    var start = this._lexer.token;
+    return {
+      kind: _kinds.Kind.ARGUMENT,
+      name: this.parseName(),
+      value: (this.expectToken(_tokenKind.TokenKind.COLON), this.parseValueLiteral(true)),
+      loc: this.loc(start)
+    };
+  } // Implements the parsing rules in the Fragments section.
+
+  /**
+   * Corresponds to both FragmentSpread and InlineFragment in the spec.
+   *
+   * FragmentSpread : ... FragmentName Directives?
+   *
+   * InlineFragment : ... TypeCondition? Directives? SelectionSet
+   */
+  ;
+
+  _proto.parseFragment = function parseFragment() {
+    var start = this._lexer.token;
+    this.expectToken(_tokenKind.TokenKind.SPREAD);
+    var hasTypeCondition = this.expectOptionalKeyword('on');
+
+    if (!hasTypeCondition && this.peek(_tokenKind.TokenKind.NAME)) {
+      return {
+        kind: _kinds.Kind.FRAGMENT_SPREAD,
+        name: this.parseFragmentName(),
+        directives: this.parseDirectives(false),
+        loc: this.loc(start)
+      };
+    }
+
+    return {
+      kind: _kinds.Kind.INLINE_FRAGMENT,
+      typeCondition: hasTypeCondition ? this.parseNamedType() : undefined,
+      directives: this.parseDirectives(false),
+      selectionSet: this.parseSelectionSet(),
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * FragmentDefinition :
+   *   - fragment FragmentName on TypeCondition Directives? SelectionSet
+   *
+   * TypeCondition : NamedType
+   */
+  ;
+
+  _proto.parseFragmentDefinition = function parseFragmentDefinition() {
+    var _this$_options;
+
+    var start = this._lexer.token;
+    this.expectKeyword('fragment'); // Experimental support for defining variables within fragments changes
+    // the grammar of FragmentDefinition:
+    //   - fragment FragmentName VariableDefinitions? on TypeCondition Directives? SelectionSet
+
+    if (((_this$_options = this._options) === null || _this$_options === void 0 ? void 0 : _this$_options.experimentalFragmentVariables) === true) {
+      return {
+        kind: _kinds.Kind.FRAGMENT_DEFINITION,
+        name: this.parseFragmentName(),
+        variableDefinitions: this.parseVariableDefinitions(),
+        typeCondition: (this.expectKeyword('on'), this.parseNamedType()),
+        directives: this.parseDirectives(false),
+        selectionSet: this.parseSelectionSet(),
+        loc: this.loc(start)
+      };
+    }
+
+    return {
+      kind: _kinds.Kind.FRAGMENT_DEFINITION,
+      name: this.parseFragmentName(),
+      typeCondition: (this.expectKeyword('on'), this.parseNamedType()),
+      directives: this.parseDirectives(false),
+      selectionSet: this.parseSelectionSet(),
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * FragmentName : Name but not `on`
+   */
+  ;
+
+  _proto.parseFragmentName = function parseFragmentName() {
+    if (this._lexer.token.value === 'on') {
+      throw this.unexpected();
+    }
+
+    return this.parseName();
+  } // Implements the parsing rules in the Values section.
+
+  /**
+   * Value[Const] :
+   *   - [~Const] Variable
+   *   - IntValue
+   *   - FloatValue
+   *   - StringValue
+   *   - BooleanValue
+   *   - NullValue
+   *   - EnumValue
+   *   - ListValue[?Const]
+   *   - ObjectValue[?Const]
+   *
+   * BooleanValue : one of `true` `false`
+   *
+   * NullValue : `null`
+   *
+   * EnumValue : Name but not `true`, `false` or `null`
+   */
+  ;
+
+  _proto.parseValueLiteral = function parseValueLiteral(isConst) {
+    var token = this._lexer.token;
+
+    switch (token.kind) {
+      case _tokenKind.TokenKind.BRACKET_L:
+        return this.parseList(isConst);
+
+      case _tokenKind.TokenKind.BRACE_L:
+        return this.parseObject(isConst);
+
+      case _tokenKind.TokenKind.INT:
+        this._lexer.advance();
+
+        return {
+          kind: _kinds.Kind.INT,
+          value: token.value,
+          loc: this.loc(token)
+        };
+
+      case _tokenKind.TokenKind.FLOAT:
+        this._lexer.advance();
+
+        return {
+          kind: _kinds.Kind.FLOAT,
+          value: token.value,
+          loc: this.loc(token)
+        };
+
+      case _tokenKind.TokenKind.STRING:
+      case _tokenKind.TokenKind.BLOCK_STRING:
+        return this.parseStringLiteral();
+
+      case _tokenKind.TokenKind.NAME:
+        this._lexer.advance();
+
+        switch (token.value) {
+          case 'true':
+            return {
+              kind: _kinds.Kind.BOOLEAN,
+              value: true,
+              loc: this.loc(token)
+            };
+
+          case 'false':
+            return {
+              kind: _kinds.Kind.BOOLEAN,
+              value: false,
+              loc: this.loc(token)
+            };
+
+          case 'null':
+            return {
+              kind: _kinds.Kind.NULL,
+              loc: this.loc(token)
+            };
+
+          default:
+            return {
+              kind: _kinds.Kind.ENUM,
+              value: token.value,
+              loc: this.loc(token)
+            };
+        }
+
+      case _tokenKind.TokenKind.DOLLAR:
+        if (!isConst) {
+          return this.parseVariable();
+        }
+
+        break;
+    }
+
+    throw this.unexpected();
+  };
+
+  _proto.parseStringLiteral = function parseStringLiteral() {
+    var token = this._lexer.token;
+
+    this._lexer.advance();
+
+    return {
+      kind: _kinds.Kind.STRING,
+      value: token.value,
+      block: token.kind === _tokenKind.TokenKind.BLOCK_STRING,
+      loc: this.loc(token)
+    };
+  }
+  /**
+   * ListValue[Const] :
+   *   - [ ]
+   *   - [ Value[?Const]+ ]
+   */
+  ;
+
+  _proto.parseList = function parseList(isConst) {
+    var _this = this;
+
+    var start = this._lexer.token;
+
+    var item = function item() {
+      return _this.parseValueLiteral(isConst);
+    };
+
+    return {
+      kind: _kinds.Kind.LIST,
+      values: this.any(_tokenKind.TokenKind.BRACKET_L, item, _tokenKind.TokenKind.BRACKET_R),
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * ObjectValue[Const] :
+   *   - { }
+   *   - { ObjectField[?Const]+ }
+   */
+  ;
+
+  _proto.parseObject = function parseObject(isConst) {
+    var _this2 = this;
+
+    var start = this._lexer.token;
+
+    var item = function item() {
+      return _this2.parseObjectField(isConst);
+    };
+
+    return {
+      kind: _kinds.Kind.OBJECT,
+      fields: this.any(_tokenKind.TokenKind.BRACE_L, item, _tokenKind.TokenKind.BRACE_R),
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * ObjectField[Const] : Name : Value[?Const]
+   */
+  ;
+
+  _proto.parseObjectField = function parseObjectField(isConst) {
+    var start = this._lexer.token;
+    var name = this.parseName();
+    this.expectToken(_tokenKind.TokenKind.COLON);
+    return {
+      kind: _kinds.Kind.OBJECT_FIELD,
+      name: name,
+      value: this.parseValueLiteral(isConst),
+      loc: this.loc(start)
+    };
+  } // Implements the parsing rules in the Directives section.
+
+  /**
+   * Directives[Const] : Directive[?Const]+
+   */
+  ;
+
+  _proto.parseDirectives = function parseDirectives(isConst) {
+    var directives = [];
+
+    while (this.peek(_tokenKind.TokenKind.AT)) {
+      directives.push(this.parseDirective(isConst));
+    }
+
+    return directives;
+  }
+  /**
+   * Directive[Const] : @ Name Arguments[?Const]?
+   */
+  ;
+
+  _proto.parseDirective = function parseDirective(isConst) {
+    var start = this._lexer.token;
+    this.expectToken(_tokenKind.TokenKind.AT);
+    return {
+      kind: _kinds.Kind.DIRECTIVE,
+      name: this.parseName(),
+      arguments: this.parseArguments(isConst),
+      loc: this.loc(start)
+    };
+  } // Implements the parsing rules in the Types section.
+
+  /**
+   * Type :
+   *   - NamedType
+   *   - ListType
+   *   - NonNullType
+   */
+  ;
+
+  _proto.parseTypeReference = function parseTypeReference() {
+    var start = this._lexer.token;
+    var type;
+
+    if (this.expectOptionalToken(_tokenKind.TokenKind.BRACKET_L)) {
+      type = this.parseTypeReference();
+      this.expectToken(_tokenKind.TokenKind.BRACKET_R);
+      type = {
+        kind: _kinds.Kind.LIST_TYPE,
+        type: type,
+        loc: this.loc(start)
+      };
+    } else {
+      type = this.parseNamedType();
+    }
+
+    if (this.expectOptionalToken(_tokenKind.TokenKind.BANG)) {
+      return {
+        kind: _kinds.Kind.NON_NULL_TYPE,
+        type: type,
+        loc: this.loc(start)
+      };
+    }
+
+    return type;
+  }
+  /**
+   * NamedType : Name
+   */
+  ;
+
+  _proto.parseNamedType = function parseNamedType() {
+    var start = this._lexer.token;
+    return {
+      kind: _kinds.Kind.NAMED_TYPE,
+      name: this.parseName(),
+      loc: this.loc(start)
+    };
+  } // Implements the parsing rules in the Type Definition section.
+
+  /**
+   * TypeSystemDefinition :
+   *   - SchemaDefinition
+   *   - TypeDefinition
+   *   - DirectiveDefinition
+   *
+   * TypeDefinition :
+   *   - ScalarTypeDefinition
+   *   - ObjectTypeDefinition
+   *   - InterfaceTypeDefinition
+   *   - UnionTypeDefinition
+   *   - EnumTypeDefinition
+   *   - InputObjectTypeDefinition
+   */
+  ;
+
+  _proto.parseTypeSystemDefinition = function parseTypeSystemDefinition() {
+    // Many definitions begin with a description and require a lookahead.
+    var keywordToken = this.peekDescription() ? this._lexer.lookahead() : this._lexer.token;
+
+    if (keywordToken.kind === _tokenKind.TokenKind.NAME) {
+      switch (keywordToken.value) {
+        case 'schema':
+          return this.parseSchemaDefinition();
+
+        case 'scalar':
+          return this.parseScalarTypeDefinition();
+
+        case 'type':
+          return this.parseObjectTypeDefinition();
+
+        case 'interface':
+          return this.parseInterfaceTypeDefinition();
+
+        case 'union':
+          return this.parseUnionTypeDefinition();
+
+        case 'enum':
+          return this.parseEnumTypeDefinition();
+
+        case 'input':
+          return this.parseInputObjectTypeDefinition();
+
+        case 'directive':
+          return this.parseDirectiveDefinition();
+      }
+    }
+
+    throw this.unexpected(keywordToken);
+  };
+
+  _proto.peekDescription = function peekDescription() {
+    return this.peek(_tokenKind.TokenKind.STRING) || this.peek(_tokenKind.TokenKind.BLOCK_STRING);
+  }
+  /**
+   * Description : StringValue
+   */
+  ;
+
+  _proto.parseDescription = function parseDescription() {
+    if (this.peekDescription()) {
+      return this.parseStringLiteral();
+    }
+  }
+  /**
+   * SchemaDefinition : Description? schema Directives[Const]? { OperationTypeDefinition+ }
+   */
+  ;
+
+  _proto.parseSchemaDefinition = function parseSchemaDefinition() {
+    var start = this._lexer.token;
+    var description = this.parseDescription();
+    this.expectKeyword('schema');
+    var directives = this.parseDirectives(true);
+    var operationTypes = this.many(_tokenKind.TokenKind.BRACE_L, this.parseOperationTypeDefinition, _tokenKind.TokenKind.BRACE_R);
+    return {
+      kind: _kinds.Kind.SCHEMA_DEFINITION,
+      description: description,
+      directives: directives,
+      operationTypes: operationTypes,
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * OperationTypeDefinition : OperationType : NamedType
+   */
+  ;
+
+  _proto.parseOperationTypeDefinition = function parseOperationTypeDefinition() {
+    var start = this._lexer.token;
+    var operation = this.parseOperationType();
+    this.expectToken(_tokenKind.TokenKind.COLON);
+    var type = this.parseNamedType();
+    return {
+      kind: _kinds.Kind.OPERATION_TYPE_DEFINITION,
+      operation: operation,
+      type: type,
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * ScalarTypeDefinition : Description? scalar Name Directives[Const]?
+   */
+  ;
+
+  _proto.parseScalarTypeDefinition = function parseScalarTypeDefinition() {
+    var start = this._lexer.token;
+    var description = this.parseDescription();
+    this.expectKeyword('scalar');
+    var name = this.parseName();
+    var directives = this.parseDirectives(true);
+    return {
+      kind: _kinds.Kind.SCALAR_TYPE_DEFINITION,
+      description: description,
+      name: name,
+      directives: directives,
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * ObjectTypeDefinition :
+   *   Description?
+   *   type Name ImplementsInterfaces? Directives[Const]? FieldsDefinition?
+   */
+  ;
+
+  _proto.parseObjectTypeDefinition = function parseObjectTypeDefinition() {
+    var start = this._lexer.token;
+    var description = this.parseDescription();
+    this.expectKeyword('type');
+    var name = this.parseName();
+    var interfaces = this.parseImplementsInterfaces();
+    var directives = this.parseDirectives(true);
+    var fields = this.parseFieldsDefinition();
+    return {
+      kind: _kinds.Kind.OBJECT_TYPE_DEFINITION,
+      description: description,
+      name: name,
+      interfaces: interfaces,
+      directives: directives,
+      fields: fields,
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * ImplementsInterfaces :
+   *   - implements `&`? NamedType
+   *   - ImplementsInterfaces & NamedType
+   */
+  ;
+
+  _proto.parseImplementsInterfaces = function parseImplementsInterfaces() {
+    var _this$_options2;
+
+    if (!this.expectOptionalKeyword('implements')) {
+      return [];
+    }
+
+    if (((_this$_options2 = this._options) === null || _this$_options2 === void 0 ? void 0 : _this$_options2.allowLegacySDLImplementsInterfaces) === true) {
+      var types = []; // Optional leading ampersand
+
+      this.expectOptionalToken(_tokenKind.TokenKind.AMP);
+
+      do {
+        types.push(this.parseNamedType());
+      } while (this.expectOptionalToken(_tokenKind.TokenKind.AMP) || this.peek(_tokenKind.TokenKind.NAME));
+
+      return types;
+    }
+
+    return this.delimitedMany(_tokenKind.TokenKind.AMP, this.parseNamedType);
+  }
+  /**
+   * FieldsDefinition : { FieldDefinition+ }
+   */
+  ;
+
+  _proto.parseFieldsDefinition = function parseFieldsDefinition() {
+    var _this$_options3;
+
+    // Legacy support for the SDL?
+    if (((_this$_options3 = this._options) === null || _this$_options3 === void 0 ? void 0 : _this$_options3.allowLegacySDLEmptyFields) === true && this.peek(_tokenKind.TokenKind.BRACE_L) && this._lexer.lookahead().kind === _tokenKind.TokenKind.BRACE_R) {
+      this._lexer.advance();
+
+      this._lexer.advance();
+
+      return [];
+    }
+
+    return this.optionalMany(_tokenKind.TokenKind.BRACE_L, this.parseFieldDefinition, _tokenKind.TokenKind.BRACE_R);
+  }
+  /**
+   * FieldDefinition :
+   *   - Description? Name ArgumentsDefinition? : Type Directives[Const]?
+   */
+  ;
+
+  _proto.parseFieldDefinition = function parseFieldDefinition() {
+    var start = this._lexer.token;
+    var description = this.parseDescription();
+    var name = this.parseName();
+    var args = this.parseArgumentDefs();
+    this.expectToken(_tokenKind.TokenKind.COLON);
+    var type = this.parseTypeReference();
+    var directives = this.parseDirectives(true);
+    return {
+      kind: _kinds.Kind.FIELD_DEFINITION,
+      description: description,
+      name: name,
+      arguments: args,
+      type: type,
+      directives: directives,
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * ArgumentsDefinition : ( InputValueDefinition+ )
+   */
+  ;
+
+  _proto.parseArgumentDefs = function parseArgumentDefs() {
+    return this.optionalMany(_tokenKind.TokenKind.PAREN_L, this.parseInputValueDef, _tokenKind.TokenKind.PAREN_R);
+  }
+  /**
+   * InputValueDefinition :
+   *   - Description? Name : Type DefaultValue? Directives[Const]?
+   */
+  ;
+
+  _proto.parseInputValueDef = function parseInputValueDef() {
+    var start = this._lexer.token;
+    var description = this.parseDescription();
+    var name = this.parseName();
+    this.expectToken(_tokenKind.TokenKind.COLON);
+    var type = this.parseTypeReference();
+    var defaultValue;
+
+    if (this.expectOptionalToken(_tokenKind.TokenKind.EQUALS)) {
+      defaultValue = this.parseValueLiteral(true);
+    }
+
+    var directives = this.parseDirectives(true);
+    return {
+      kind: _kinds.Kind.INPUT_VALUE_DEFINITION,
+      description: description,
+      name: name,
+      type: type,
+      defaultValue: defaultValue,
+      directives: directives,
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * InterfaceTypeDefinition :
+   *   - Description? interface Name Directives[Const]? FieldsDefinition?
+   */
+  ;
+
+  _proto.parseInterfaceTypeDefinition = function parseInterfaceTypeDefinition() {
+    var start = this._lexer.token;
+    var description = this.parseDescription();
+    this.expectKeyword('interface');
+    var name = this.parseName();
+    var interfaces = this.parseImplementsInterfaces();
+    var directives = this.parseDirectives(true);
+    var fields = this.parseFieldsDefinition();
+    return {
+      kind: _kinds.Kind.INTERFACE_TYPE_DEFINITION,
+      description: description,
+      name: name,
+      interfaces: interfaces,
+      directives: directives,
+      fields: fields,
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * UnionTypeDefinition :
+   *   - Description? union Name Directives[Const]? UnionMemberTypes?
+   */
+  ;
+
+  _proto.parseUnionTypeDefinition = function parseUnionTypeDefinition() {
+    var start = this._lexer.token;
+    var description = this.parseDescription();
+    this.expectKeyword('union');
+    var name = this.parseName();
+    var directives = this.parseDirectives(true);
+    var types = this.parseUnionMemberTypes();
+    return {
+      kind: _kinds.Kind.UNION_TYPE_DEFINITION,
+      description: description,
+      name: name,
+      directives: directives,
+      types: types,
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * UnionMemberTypes :
+   *   - = `|`? NamedType
+   *   - UnionMemberTypes | NamedType
+   */
+  ;
+
+  _proto.parseUnionMemberTypes = function parseUnionMemberTypes() {
+    return this.expectOptionalToken(_tokenKind.TokenKind.EQUALS) ? this.delimitedMany(_tokenKind.TokenKind.PIPE, this.parseNamedType) : [];
+  }
+  /**
+   * EnumTypeDefinition :
+   *   - Description? enum Name Directives[Const]? EnumValuesDefinition?
+   */
+  ;
+
+  _proto.parseEnumTypeDefinition = function parseEnumTypeDefinition() {
+    var start = this._lexer.token;
+    var description = this.parseDescription();
+    this.expectKeyword('enum');
+    var name = this.parseName();
+    var directives = this.parseDirectives(true);
+    var values = this.parseEnumValuesDefinition();
+    return {
+      kind: _kinds.Kind.ENUM_TYPE_DEFINITION,
+      description: description,
+      name: name,
+      directives: directives,
+      values: values,
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * EnumValuesDefinition : { EnumValueDefinition+ }
+   */
+  ;
+
+  _proto.parseEnumValuesDefinition = function parseEnumValuesDefinition() {
+    return this.optionalMany(_tokenKind.TokenKind.BRACE_L, this.parseEnumValueDefinition, _tokenKind.TokenKind.BRACE_R);
+  }
+  /**
+   * EnumValueDefinition : Description? EnumValue Directives[Const]?
+   *
+   * EnumValue : Name
+   */
+  ;
+
+  _proto.parseEnumValueDefinition = function parseEnumValueDefinition() {
+    var start = this._lexer.token;
+    var description = this.parseDescription();
+    var name = this.parseName();
+    var directives = this.parseDirectives(true);
+    return {
+      kind: _kinds.Kind.ENUM_VALUE_DEFINITION,
+      description: description,
+      name: name,
+      directives: directives,
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * InputObjectTypeDefinition :
+   *   - Description? input Name Directives[Const]? InputFieldsDefinition?
+   */
+  ;
+
+  _proto.parseInputObjectTypeDefinition = function parseInputObjectTypeDefinition() {
+    var start = this._lexer.token;
+    var description = this.parseDescription();
+    this.expectKeyword('input');
+    var name = this.parseName();
+    var directives = this.parseDirectives(true);
+    var fields = this.parseInputFieldsDefinition();
+    return {
+      kind: _kinds.Kind.INPUT_OBJECT_TYPE_DEFINITION,
+      description: description,
+      name: name,
+      directives: directives,
+      fields: fields,
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * InputFieldsDefinition : { InputValueDefinition+ }
+   */
+  ;
+
+  _proto.parseInputFieldsDefinition = function parseInputFieldsDefinition() {
+    return this.optionalMany(_tokenKind.TokenKind.BRACE_L, this.parseInputValueDef, _tokenKind.TokenKind.BRACE_R);
+  }
+  /**
+   * TypeSystemExtension :
+   *   - SchemaExtension
+   *   - TypeExtension
+   *
+   * TypeExtension :
+   *   - ScalarTypeExtension
+   *   - ObjectTypeExtension
+   *   - InterfaceTypeExtension
+   *   - UnionTypeExtension
+   *   - EnumTypeExtension
+   *   - InputObjectTypeDefinition
+   */
+  ;
+
+  _proto.parseTypeSystemExtension = function parseTypeSystemExtension() {
+    var keywordToken = this._lexer.lookahead();
+
+    if (keywordToken.kind === _tokenKind.TokenKind.NAME) {
+      switch (keywordToken.value) {
+        case 'schema':
+          return this.parseSchemaExtension();
+
+        case 'scalar':
+          return this.parseScalarTypeExtension();
+
+        case 'type':
+          return this.parseObjectTypeExtension();
+
+        case 'interface':
+          return this.parseInterfaceTypeExtension();
+
+        case 'union':
+          return this.parseUnionTypeExtension();
+
+        case 'enum':
+          return this.parseEnumTypeExtension();
+
+        case 'input':
+          return this.parseInputObjectTypeExtension();
+      }
+    }
+
+    throw this.unexpected(keywordToken);
+  }
+  /**
+   * SchemaExtension :
+   *  - extend schema Directives[Const]? { OperationTypeDefinition+ }
+   *  - extend schema Directives[Const]
+   */
+  ;
+
+  _proto.parseSchemaExtension = function parseSchemaExtension() {
+    var start = this._lexer.token;
+    this.expectKeyword('extend');
+    this.expectKeyword('schema');
+    var directives = this.parseDirectives(true);
+    var operationTypes = this.optionalMany(_tokenKind.TokenKind.BRACE_L, this.parseOperationTypeDefinition, _tokenKind.TokenKind.BRACE_R);
+
+    if (directives.length === 0 && operationTypes.length === 0) {
+      throw this.unexpected();
+    }
+
+    return {
+      kind: _kinds.Kind.SCHEMA_EXTENSION,
+      directives: directives,
+      operationTypes: operationTypes,
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * ScalarTypeExtension :
+   *   - extend scalar Name Directives[Const]
+   */
+  ;
+
+  _proto.parseScalarTypeExtension = function parseScalarTypeExtension() {
+    var start = this._lexer.token;
+    this.expectKeyword('extend');
+    this.expectKeyword('scalar');
+    var name = this.parseName();
+    var directives = this.parseDirectives(true);
+
+    if (directives.length === 0) {
+      throw this.unexpected();
+    }
+
+    return {
+      kind: _kinds.Kind.SCALAR_TYPE_EXTENSION,
+      name: name,
+      directives: directives,
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * ObjectTypeExtension :
+   *  - extend type Name ImplementsInterfaces? Directives[Const]? FieldsDefinition
+   *  - extend type Name ImplementsInterfaces? Directives[Const]
+   *  - extend type Name ImplementsInterfaces
+   */
+  ;
+
+  _proto.parseObjectTypeExtension = function parseObjectTypeExtension() {
+    var start = this._lexer.token;
+    this.expectKeyword('extend');
+    this.expectKeyword('type');
+    var name = this.parseName();
+    var interfaces = this.parseImplementsInterfaces();
+    var directives = this.parseDirectives(true);
+    var fields = this.parseFieldsDefinition();
+
+    if (interfaces.length === 0 && directives.length === 0 && fields.length === 0) {
+      throw this.unexpected();
+    }
+
+    return {
+      kind: _kinds.Kind.OBJECT_TYPE_EXTENSION,
+      name: name,
+      interfaces: interfaces,
+      directives: directives,
+      fields: fields,
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * InterfaceTypeExtension :
+   *  - extend interface Name ImplementsInterfaces? Directives[Const]? FieldsDefinition
+   *  - extend interface Name ImplementsInterfaces? Directives[Const]
+   *  - extend interface Name ImplementsInterfaces
+   */
+  ;
+
+  _proto.parseInterfaceTypeExtension = function parseInterfaceTypeExtension() {
+    var start = this._lexer.token;
+    this.expectKeyword('extend');
+    this.expectKeyword('interface');
+    var name = this.parseName();
+    var interfaces = this.parseImplementsInterfaces();
+    var directives = this.parseDirectives(true);
+    var fields = this.parseFieldsDefinition();
+
+    if (interfaces.length === 0 && directives.length === 0 && fields.length === 0) {
+      throw this.unexpected();
+    }
+
+    return {
+      kind: _kinds.Kind.INTERFACE_TYPE_EXTENSION,
+      name: name,
+      interfaces: interfaces,
+      directives: directives,
+      fields: fields,
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * UnionTypeExtension :
+   *   - extend union Name Directives[Const]? UnionMemberTypes
+   *   - extend union Name Directives[Const]
+   */
+  ;
+
+  _proto.parseUnionTypeExtension = function parseUnionTypeExtension() {
+    var start = this._lexer.token;
+    this.expectKeyword('extend');
+    this.expectKeyword('union');
+    var name = this.parseName();
+    var directives = this.parseDirectives(true);
+    var types = this.parseUnionMemberTypes();
+
+    if (directives.length === 0 && types.length === 0) {
+      throw this.unexpected();
+    }
+
+    return {
+      kind: _kinds.Kind.UNION_TYPE_EXTENSION,
+      name: name,
+      directives: directives,
+      types: types,
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * EnumTypeExtension :
+   *   - extend enum Name Directives[Const]? EnumValuesDefinition
+   *   - extend enum Name Directives[Const]
+   */
+  ;
+
+  _proto.parseEnumTypeExtension = function parseEnumTypeExtension() {
+    var start = this._lexer.token;
+    this.expectKeyword('extend');
+    this.expectKeyword('enum');
+    var name = this.parseName();
+    var directives = this.parseDirectives(true);
+    var values = this.parseEnumValuesDefinition();
+
+    if (directives.length === 0 && values.length === 0) {
+      throw this.unexpected();
+    }
+
+    return {
+      kind: _kinds.Kind.ENUM_TYPE_EXTENSION,
+      name: name,
+      directives: directives,
+      values: values,
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * InputObjectTypeExtension :
+   *   - extend input Name Directives[Const]? InputFieldsDefinition
+   *   - extend input Name Directives[Const]
+   */
+  ;
+
+  _proto.parseInputObjectTypeExtension = function parseInputObjectTypeExtension() {
+    var start = this._lexer.token;
+    this.expectKeyword('extend');
+    this.expectKeyword('input');
+    var name = this.parseName();
+    var directives = this.parseDirectives(true);
+    var fields = this.parseInputFieldsDefinition();
+
+    if (directives.length === 0 && fields.length === 0) {
+      throw this.unexpected();
+    }
+
+    return {
+      kind: _kinds.Kind.INPUT_OBJECT_TYPE_EXTENSION,
+      name: name,
+      directives: directives,
+      fields: fields,
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * DirectiveDefinition :
+   *   - Description? directive @ Name ArgumentsDefinition? `repeatable`? on DirectiveLocations
+   */
+  ;
+
+  _proto.parseDirectiveDefinition = function parseDirectiveDefinition() {
+    var start = this._lexer.token;
+    var description = this.parseDescription();
+    this.expectKeyword('directive');
+    this.expectToken(_tokenKind.TokenKind.AT);
+    var name = this.parseName();
+    var args = this.parseArgumentDefs();
+    var repeatable = this.expectOptionalKeyword('repeatable');
+    this.expectKeyword('on');
+    var locations = this.parseDirectiveLocations();
+    return {
+      kind: _kinds.Kind.DIRECTIVE_DEFINITION,
+      description: description,
+      name: name,
+      arguments: args,
+      repeatable: repeatable,
+      locations: locations,
+      loc: this.loc(start)
+    };
+  }
+  /**
+   * DirectiveLocations :
+   *   - `|`? DirectiveLocation
+   *   - DirectiveLocations | DirectiveLocation
+   */
+  ;
+
+  _proto.parseDirectiveLocations = function parseDirectiveLocations() {
+    return this.delimitedMany(_tokenKind.TokenKind.PIPE, this.parseDirectiveLocation);
+  }
+  /*
+   * DirectiveLocation :
+   *   - ExecutableDirectiveLocation
+   *   - TypeSystemDirectiveLocation
+   *
+   * ExecutableDirectiveLocation : one of
+   *   `QUERY`
+   *   `MUTATION`
+   *   `SUBSCRIPTION`
+   *   `FIELD`
+   *   `FRAGMENT_DEFINITION`
+   *   `FRAGMENT_SPREAD`
+   *   `INLINE_FRAGMENT`
+   *
+   * TypeSystemDirectiveLocation : one of
+   *   `SCHEMA`
+   *   `SCALAR`
+   *   `OBJECT`
+   *   `FIELD_DEFINITION`
+   *   `ARGUMENT_DEFINITION`
+   *   `INTERFACE`
+   *   `UNION`
+   *   `ENUM`
+   *   `ENUM_VALUE`
+   *   `INPUT_OBJECT`
+   *   `INPUT_FIELD_DEFINITION`
+   */
+  ;
+
+  _proto.parseDirectiveLocation = function parseDirectiveLocation() {
+    var start = this._lexer.token;
+    var name = this.parseName();
+
+    if (_directiveLocation.DirectiveLocation[name.value] !== undefined) {
+      return name;
+    }
+
+    throw this.unexpected(start);
+  } // Core parsing utility functions
+
+  /**
+   * Returns a location object, used to identify the place in the source that created a given parsed object.
+   */
+  ;
+
+  _proto.loc = function loc(startToken) {
+    var _this$_options4;
+
+    if (((_this$_options4 = this._options) === null || _this$_options4 === void 0 ? void 0 : _this$_options4.noLocation) !== true) {
+      return new _ast.Location(startToken, this._lexer.lastToken, this._lexer.source);
+    }
+  }
+  /**
+   * Determines if the next token is of a given kind
+   */
+  ;
+
+  _proto.peek = function peek(kind) {
+    return this._lexer.token.kind === kind;
+  }
+  /**
+   * If the next token is of the given kind, return that token after advancing the lexer.
+   * Otherwise, do not change the parser state and throw an error.
+   */
+  ;
+
+  _proto.expectToken = function expectToken(kind) {
+    var token = this._lexer.token;
+
+    if (token.kind === kind) {
+      this._lexer.advance();
+
+      return token;
+    }
+
+    throw (0, _syntaxError.syntaxError)(this._lexer.source, token.start, "Expected ".concat(getTokenKindDesc(kind), ", found ").concat(getTokenDesc(token), "."));
+  }
+  /**
+   * If the next token is of the given kind, return that token after advancing the lexer.
+   * Otherwise, do not change the parser state and return undefined.
+   */
+  ;
+
+  _proto.expectOptionalToken = function expectOptionalToken(kind) {
+    var token = this._lexer.token;
+
+    if (token.kind === kind) {
+      this._lexer.advance();
+
+      return token;
+    }
+
+    return undefined;
+  }
+  /**
+   * If the next token is a given keyword, advance the lexer.
+   * Otherwise, do not change the parser state and throw an error.
+   */
+  ;
+
+  _proto.expectKeyword = function expectKeyword(value) {
+    var token = this._lexer.token;
+
+    if (token.kind === _tokenKind.TokenKind.NAME && token.value === value) {
+      this._lexer.advance();
+    } else {
+      throw (0, _syntaxError.syntaxError)(this._lexer.source, token.start, "Expected \"".concat(value, "\", found ").concat(getTokenDesc(token), "."));
+    }
+  }
+  /**
+   * If the next token is a given keyword, return "true" after advancing the lexer.
+   * Otherwise, do not change the parser state and return "false".
+   */
+  ;
+
+  _proto.expectOptionalKeyword = function expectOptionalKeyword(value) {
+    var token = this._lexer.token;
+
+    if (token.kind === _tokenKind.TokenKind.NAME && token.value === value) {
+      this._lexer.advance();
+
+      return true;
+    }
+
+    return false;
+  }
+  /**
+   * Helper function for creating an error when an unexpected lexed token is encountered.
+   */
+  ;
+
+  _proto.unexpected = function unexpected(atToken) {
+    var token = atToken !== null && atToken !== void 0 ? atToken : this._lexer.token;
+    return (0, _syntaxError.syntaxError)(this._lexer.source, token.start, "Unexpected ".concat(getTokenDesc(token), "."));
+  }
+  /**
+   * Returns a possibly empty list of parse nodes, determined by the parseFn.
+   * This list begins with a lex token of openKind and ends with a lex token of closeKind.
+   * Advances the parser to the next lex token after the closing token.
+   */
+  ;
+
+  _proto.any = function any(openKind, parseFn, closeKind) {
+    this.expectToken(openKind);
+    var nodes = [];
+
+    while (!this.expectOptionalToken(closeKind)) {
+      nodes.push(parseFn.call(this));
+    }
+
+    return nodes;
+  }
+  /**
+   * Returns a list of parse nodes, determined by the parseFn.
+   * It can be empty only if open token is missing otherwise it will always return non-empty list
+   * that begins with a lex token of openKind and ends with a lex token of closeKind.
+   * Advances the parser to the next lex token after the closing token.
+   */
+  ;
+
+  _proto.optionalMany = function optionalMany(openKind, parseFn, closeKind) {
+    if (this.expectOptionalToken(openKind)) {
+      var nodes = [];
+
+      do {
+        nodes.push(parseFn.call(this));
+      } while (!this.expectOptionalToken(closeKind));
+
+      return nodes;
+    }
+
+    return [];
+  }
+  /**
+   * Returns a non-empty list of parse nodes, determined by the parseFn.
+   * This list begins with a lex token of openKind and ends with a lex token of closeKind.
+   * Advances the parser to the next lex token after the closing token.
+   */
+  ;
+
+  _proto.many = function many(openKind, parseFn, closeKind) {
+    this.expectToken(openKind);
+    var nodes = [];
+
+    do {
+      nodes.push(parseFn.call(this));
+    } while (!this.expectOptionalToken(closeKind));
+
+    return nodes;
+  }
+  /**
+   * Returns a non-empty list of parse nodes, determined by the parseFn.
+   * This list may begin with a lex token of delimiterKind followed by items separated by lex tokens of tokenKind.
+   * Advances the parser to the next lex token after last item in the list.
+   */
+  ;
+
+  _proto.delimitedMany = function delimitedMany(delimiterKind, parseFn) {
+    this.expectOptionalToken(delimiterKind);
+    var nodes = [];
+
+    do {
+      nodes.push(parseFn.call(this));
+    } while (this.expectOptionalToken(delimiterKind));
+
+    return nodes;
+  };
+
+  return Parser;
+}();
+/**
+ * A helper function to describe a token as a string for debugging.
+ */
+
+
+exports.Parser = Parser;
+
+function getTokenDesc(token) {
+  var value = token.value;
+  return getTokenKindDesc(token.kind) + (value != null ? " \"".concat(value, "\"") : '');
+}
+/**
+ * A helper function to describe a token kind as a string for debugging.
+ */
+
+
+function getTokenKindDesc(kind) {
+  return (0, _lexer.isPunctuatorTokenKind)(kind) ? "\"".concat(kind, "\"") : kind;
+}