graphql-scalars
Version:
A collection of scalar types not included in base GraphQL.
50 lines • 2.14 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const definition_1 = require("graphql/type/definition");
const error_1 = require("graphql/error");
const language_1 = require("graphql/language");
exports.default = new definition_1.GraphQLScalarType({
name: 'DateTime',
description: 'Use JavaScript Date object for date/time fields.',
serialize(value) {
let v = value;
if (!(v instanceof Date) && typeof v !== 'string' && typeof v !== 'number') {
throw new TypeError(`Value is not an instance of Date, Date string or number: ${JSON.stringify(v)}`);
}
if (typeof v === 'string') {
v = new Date();
v.setTime(Date.parse(value));
}
else if (typeof v === 'number') {
v = new Date(v);
}
// eslint-disable-next-line no-restricted-globals
if (Number.isNaN(v.getTime())) {
throw new TypeError(`Value is not a valid Date: ${JSON.stringify(v)}`);
}
return v.toJSON();
},
parseValue(value) {
const date = new Date(value);
// eslint-disable-next-line no-restricted-globals
if (Number.isNaN(date.getTime())) {
throw new TypeError(`Value is not a valid Date: ${value}`);
}
return date;
},
parseLiteral(ast) {
if (ast.kind !== language_1.Kind.STRING && ast.kind !== language_1.Kind.INT) {
throw new error_1.GraphQLError(`Can only parse strings & integers to dates but got a: ${ast.kind}`);
}
const result = new Date(ast.kind === language_1.Kind.INT ? Number(ast.value) : ast.value);
// eslint-disable-next-line no-restricted-globals
if (Number.isNaN(result.getTime())) {
throw new error_1.GraphQLError(`Value is not a valid Date: ${ast.value}`);
}
if (ast.kind === language_1.Kind.STRING && ast.value !== result.toJSON()) {
throw new error_1.GraphQLError(`Value is not a valid Date format (YYYY-MM-DDTHH:MM:SS.SSSZ): ${ast.value}`);
}
return result;
},
});
//# sourceMappingURL=DateTime.js.map