@paroicms/server/dist/graphql/custom-scalar/DateTime.js

The ParoiCMS server

import { GraphQLScalarType, Kind } from "graphql";
export const ScalarDateTime = new GraphQLScalarType({
    name: "DateTime",
    description: "A custom scalar for ISO 8601 formatted date-time strings",
    serialize(value) {
        if (!(value instanceof Date)) {
            throw new TypeError(`DateTime.serialize: Value is not a Date object: ${value}`);
        }
        return value.toISOString();
    },
    parseValue(value) {
        if (typeof value !== "string" || !isValidISODate(value)) {
            throw new TypeError(`DateTime.parseValue: Invalid ISO 8601 date string: ${value}`);
        }
        return new Date(value);
    },
    parseLiteral(ast) {
        if (ast.kind !== Kind.STRING) {
            throw new TypeError(`DateTime.parseLiteral: Invalid date type: ${ast.kind}`);
        }
        if (!isValidISODate(ast.value)) {
            throw new TypeError(`DateTime.parseLiteral: Invalid ISO 8601 date string: ${ast.value}`);
        }
        return new Date(ast.value);
    },
});
function isValidISODate(value) {
    const date = Date.parse(value);
    return !Number.isNaN(date);
}
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