graphql-scalars
Version:
A collection of scalar types not included in base GraphQL.
42 lines • 1.47 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 ISBN_REGEX_ARR = [
/^(?:ISBN(?:-10)?:? *((?=\d{1,5}([ -]?)\d{1,7}\2?\d{1,6}\2?\d)(?:\d\2*){9}[\dX]))$/i,
/^(?:ISBN(?:-13)?:? *(97(?:8|9)([ -]?)(?=\d{1,5}\2?\d{1,7}\2?\d{1,6}\2?\d)(?:\d\2*){9}\d))$/i
];
const validate = (value) => {
if (typeof value !== 'string') {
throw new TypeError(`Value is not string: ${value}`);
}
let valid = false;
for (const regex of ISBN_REGEX_ARR) {
if (regex.test(value)) {
valid = true;
break;
}
}
if (!valid) {
throw new TypeError(`Value is not a valid ISBN number: ${value}`);
}
return value;
};
exports.default = new definition_1.GraphQLScalarType({
name: `ISBN`,
description: `A field whose value is a ISBN-10 or ISBN-13 number: https://en.wikipedia.org/wiki/International_Standard_Book_Number.`,
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 ISBN numbers but got a: ${ast.kind}`);
}
return validate(ast.value);
}
});
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