graphql-scalars/dist/esnext/resolvers/Hexadecimal.js

A collection of scalar types not included in base GraphQL.

import { GraphQLScalarType } from 'graphql/type/definition';
import { GraphQLError } from 'graphql/error';
import { Kind } from 'graphql/language';
const HEXADECIMAL_REGEX = /^[a-f0-9]+$/i;
const validate = (value) => {
    if (typeof value !== 'string') {
        throw new TypeError(`Value is not string: ${value}`);
    }
    if (!(HEXADECIMAL_REGEX.test(value))) {
        throw new TypeError(`Value is not a valid hexadecimal value: ${value}`);
    }
    return value;
};
export default new GraphQLScalarType({
    name: `Hexadecimal`,
    description: `A field whose value is a hexadecimal: https://en.wikipedia.org/wiki/Hexadecimal.`,
    serialize(value) {
        return validate(value);
    },
    parseValue(value) {
        return validate(value);
    },
    parseLiteral(ast) {
        if (ast.kind !== Kind.STRING) {
            throw new GraphQLError(`Can only validate strings as a hexadecimal but got a: ${ast.kind}`);
        }
        return validate(ast.value);
    }
});
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