graphql-scalars/esm/scalars/Timestamp.js

A collection of scalar types not included in base GraphQL.

import { GraphQLScalarType, Kind } from 'graphql';
// Taken from https://gist.github.com/langpavel/b30f3d507a47713b0c6e89016e4e9eb7
function serializeDate(value) {
    if (value instanceof Date) {
        return value.getTime();
    }
    else if (typeof value === 'number') {
        return Math.trunc(value);
    }
    else if (typeof value === 'string') {
        return Date.parse(value);
    }
    return null;
}
function parseDate(value) {
    if (value === null) {
        return null;
    }
    try {
        return new Date(value);
    }
    catch (_a) {
        return null;
    }
}
function parseDateFromLiteral(ast) {
    if (ast.kind === Kind.INT) {
        const num = parseInt(ast.value, 10);
        return new Date(num);
    }
    else if (ast.kind === Kind.STRING) {
        return parseDate(ast.value);
    }
    return null;
}
export const GraphQLTimestamp = /*#__PURE__*/ new GraphQLScalarType({
    name: 'Timestamp',
    description: 'The javascript `Date` as integer. Type represents date and time ' +
        'as number of milliseconds from start of UNIX epoch.',
    serialize: serializeDate,
    parseValue: parseDate,
    parseLiteral: parseDateFromLiteral,
    extensions: {
        codegenScalarType: 'Date | string | number',
        jsonSchema: {
            type: 'string',
            format: 'unix-time',
        },
    },
});