graphql-scalars
Version:
A collection of scalar types not included in base GraphQL.
32 lines • 1.14 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");
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;
};
exports.default = new definition_1.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 !== language_1.Kind.STRING) {
throw new error_1.GraphQLError(`Can only validate strings as a hexadecimal but got a: ${ast.kind}`);
}
return validate(ast.value);
}
});
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