FreeAllMedia/jsonapi-formatter

export default class JsonApiFormatter {
    formatResponse(response) {
        if(response && typeof response.set === "function") {
            response.set("content-type", "application/vnd.api+json");
        }
    }

    format(body) {
        if(body instanceof Error && (typeof body.toJSON === "function")) {
            let errors = body.toJSON();
            let result = [];
            errors.forEach((error) => {
                result.push({
                    title: error.name,
                    details: error.message
                });
            });
            return {errors: result};
        } else if(body instanceof Error) {
            return {
                errors: [
                    {
                        title: body.name,
                        details: body.message
                    }
                ]
            };
        } else if(Array.isArray(body) && body.length && body[0] instanceof Error) {
            let errors = [];
            body.forEach((error) => {
                errors.push({
                    title: error.name,
                    details: error.message
                });
            });
            return {errors: errors};
        } else {
            return {data: body};
        }
    }
}