graphql-scalars
Version:
A collection of scalar types not included in base GraphQL.
95 lines (94 loc) • 3.51 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 { parseDateTime } from './formatter.js';
// eslint-disable-line
import { validateDateTime, validateJSDate } from './validator.js';
export const GraphQLDateTimeConfig = /*#__PURE__*/ {
name: 'DateTime',
description: 'A date-time string at UTC, such as 2007-12-03T10:15:30Z, ' +
'compliant with the `date-time` 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 value;
}
throw createGraphQLError('DateTime cannot represent an invalid Date instance');
}
else if (typeof value === 'string') {
if (validateDateTime(value)) {
return parseDateTime(value);
}
throw createGraphQLError(`DateTime cannot represent an invalid date-time-string ${value}.`);
}
else if (typeof value === 'number') {
try {
return new Date(value);
}
catch (_a) {
throw createGraphQLError('DateTime cannot represent an invalid Unix timestamp ' + value);
}
}
else {
throw createGraphQLError('DateTime cannot be serialized from a non string, ' +
'non numeric or non Date type ' +
JSON.stringify(value));
}
},
parseValue(value) {
if (value instanceof Date) {
if (validateJSDate(value)) {
return value;
}
throw createGraphQLError('DateTime cannot represent an invalid Date instance');
}
if (typeof value === 'string') {
if (validateDateTime(value)) {
return parseDateTime(value);
}
throw createGraphQLError(`DateTime cannot represent an invalid date-time-string ${value}.`);
}
throw createGraphQLError(`DateTime cannot represent non string or Date type ${JSON.stringify(value)}`);
},
parseLiteral(ast) {
if (ast.kind !== Kind.STRING) {
throw createGraphQLError(`DateTime cannot represent non string or Date type ${'value' in ast && ast.value}`, {
nodes: ast,
});
}
const { value } = ast;
if (validateDateTime(value)) {
return parseDateTime(value);
}
throw createGraphQLError(`DateTime cannot represent an invalid date-time-string ${String(value)}.`, { nodes: ast });
},
extensions: {
codegenScalarType: 'Date | string',
jsonSchema: {
type: 'string',
format: 'date-time',
},
},
};
/**
* An RFC 3339 compliant date-time scalar.
*
* Input:
* This scalar takes an RFC 3339 date-time string as input and
* parses it to a javascript Date.
*
* Output:
* This scalar serializes javascript Dates,
* RFC 3339 date-time strings and unix timestamps
* to RFC 3339 UTC date-time strings.
*/
export const GraphQLDateTime = /*#__PURE__*/ new GraphQLScalarType(GraphQLDateTimeConfig);