graphql-scalars
Version:
A collection of scalar types not included in base GraphQL.
77 lines (76 loc) • 2.75 kB
JavaScript
/**
* Copyright (c) 2017, Dirk-Jan Rutten
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
*/
import { GraphQLScalarType, Kind } from 'graphql';
import { createGraphQLError } from '../../error.js';
import { parseDate, serializeDate } from './formatter.js';
import { validateDate, validateJSDate } from './validator.js';
export const GraphQLDateConfig = /*#__PURE__*/ {
name: 'Date',
description: 'A date string, such as 2007-12-03, compliant with the `full-date` ' +
'format outlined in section 5.6 of the RFC 3339 profile of the ' +
'ISO 8601 standard for representation of dates and times using ' +
'the Gregorian calendar.',
serialize(value) {
if (value instanceof Date) {
if (validateJSDate(value)) {
return serializeDate(value);
}
throw createGraphQLError('Date cannot represent an invalid Date instance');
}
else if (typeof value === 'string') {
if (validateDate(value)) {
return value;
}
throw createGraphQLError(`Date cannot represent an invalid date-string ${value}.`);
}
else {
throw createGraphQLError('Date cannot represent a non string, or non Date type ' + JSON.stringify(value));
}
},
parseValue(value) {
if (!(typeof value === 'string')) {
throw createGraphQLError(`Date cannot represent non string type ${JSON.stringify(value)}`);
}
if (validateDate(value)) {
return parseDate(value);
}
throw createGraphQLError(`Date cannot represent an invalid date-string ${value}.`);
},
parseLiteral(ast) {
if (ast.kind !== Kind.STRING) {
throw createGraphQLError(`Date cannot represent non string type ${'value' in ast && ast.value}`, { nodes: ast });
}
const { value } = ast;
if (validateDate(value)) {
return parseDate(value);
}
throw createGraphQLError(`Date cannot represent an invalid date-string ${String(value)}.`, {
nodes: ast,
});
},
extensions: {
codegenScalarType: 'Date | string',
jsonSchema: {
type: 'string',
format: 'date',
},
},
};
/**
* An RFC 3339 compliant date scalar.
*
* Input:
* This scalar takes an RFC 3339 date string as input and
* parses it to a javascript Date.
*
* Output:
* This scalar serializes javascript Dates and
* RFC 3339 date strings to RFC 3339 date strings.
*/
export const GraphQLDate = /*#__PURE__*/ new GraphQLScalarType(GraphQLDateConfig);