graphql-scalars/dist/commonjs/RegularExpression.js

A collection of scalar types not included in base GraphQL.

"use strict";
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");
class RegularExpression extends definition_1.GraphQLScalarType {
    constructor(name, regex, options = {}) {
        const REGEX = new RegExp(regex);
        const errorMessage = options.errorMessage
            ? options.errorMessage
            : (r, v) => `Value does not match the regular expression ${r}: ${v}`;
        super({
            name,
            description: `A field whose value matches the provided regular expression ${regex}.`,
            serialize(value) {
                if (typeof value !== 'string') {
                    throw new TypeError(`Value is not string: ${value}`);
                }
                if (!REGEX.test(value)) {
                    throw new TypeError(errorMessage(regex, value));
                }
                return value;
            },
            parseValue(value) {
                if (typeof value !== 'string') {
                    throw new TypeError(`Value is not string: ${value}`);
                }
                if (!REGEX.test(value)) {
                    throw new TypeError(errorMessage(regex, value));
                }
                return value;
            },
            parseLiteral(ast) {
                if (ast.kind !== language_1.Kind.STRING) {
                    throw new error_1.GraphQLError(`Can only validate strings as regular expressions but got a: ${ast.kind}`);
                }
                if (!REGEX.test(ast.value)) {
                    throw new TypeError(errorMessage(regex, ast.value));
                }
                return ast.value;
            },
        });
    }
}
exports.default = RegularExpression;
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