@envelop/fragment-arguments
Version:
This plugins replaces the default GraphQL `parser` with an extended version that supports setting arguments on fragments.
82 lines (81 loc) • 3.29 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.FragmentArgumentCompatibleParser = void 0;
/* eslint-disable @typescript-eslint/explicit-module-boundary-types */
const graphql_1 = require("graphql");
const parser_js_1 = require("graphql/language/parser.js");
class FragmentArgumentCompatibleParser extends parser_js_1.Parser {
// see https://github.com/graphql/graphql-js/pull/3248
getLexer() {
return this._lexer;
}
// see https://github.com/graphql/graphql-js/pull/3248
getOptions() {
return this._options;
}
// for backwards-compat with v15, this api was removed in v16 in favor of the this.node API.
loc(startToken) {
if (this.getOptions()?.noLocation !== true) {
const lexer = this.getLexer();
return new graphql_1.Location(startToken, lexer.lastToken, lexer.source);
}
return undefined;
}
parseFragment() {
const start = this.getLexer().token;
this.expectToken(graphql_1.TokenKind.SPREAD);
const hasTypeCondition = this.expectOptionalKeyword('on');
if (!hasTypeCondition && this.peek(graphql_1.TokenKind.NAME)) {
const name = this.parseFragmentName();
if (this.peek(graphql_1.TokenKind.PAREN_L)) {
return {
kind: graphql_1.Kind.FRAGMENT_SPREAD,
name,
arguments: this.parseArguments(),
directives: this.parseDirectives(),
loc: this.loc(start),
};
}
return {
kind: graphql_1.Kind.FRAGMENT_SPREAD,
name: this.parseFragmentName(),
directives: this.parseDirectives(),
loc: this.loc(start),
};
}
return {
kind: graphql_1.Kind.INLINE_FRAGMENT,
typeCondition: hasTypeCondition ? this.parseNamedType() : undefined,
directives: this.parseDirectives(),
selectionSet: this.parseSelectionSet(),
loc: this.loc(start),
};
}
parseFragmentDefinition() {
const start = this.getLexer().token;
this.expectKeyword('fragment');
const name = this.parseFragmentName();
if (this.peek(graphql_1.TokenKind.PAREN_L)) {
const fragmentDefinition = {
kind: graphql_1.Kind.FRAGMENT_DEFINITION,
name,
variableDefinitions: this.parseVariableDefinitions(),
typeCondition: (this.expectKeyword('on'), this.parseNamedType()),
directives: this.parseDirectives(),
selectionSet: this.parseSelectionSet(),
loc: this.loc(start),
};
return fragmentDefinition;
}
const fragmentDefinition = {
kind: graphql_1.Kind.FRAGMENT_DEFINITION,
name,
typeCondition: (this.expectKeyword('on'), this.parseNamedType()),
directives: this.parseDirectives(),
selectionSet: this.parseSelectionSet(),
loc: this.loc(start),
};
return fragmentDefinition;
}
}
exports.FragmentArgumentCompatibleParser = FragmentArgumentCompatibleParser;