Function used to make some fields of a object required, both at compile time and runtime. Throws exceptions https://www.typescriptlang.org/play?#code/MYewdgzgLgBAhhCBTATlAYgSyQGwCYQAKKSyYsAvDADwAqMSAHlEmATAEpKgp7XQpMYAOYAaGAFcwAazAgA7mAB84gKoNmrdtKQBPEADMYtJQAo8cKHABcx8Qez4It1QG0AugEpb9AGSckAEcJTBI+QkxgaTo1JSUYCniAbwAoFJgMmAMQFBhTHCRYB1w8GEMsxwJ…

assert-fields.ts

const assertFieldsPresent = <T extends Record<string, unknown>, U extends keyof T>(data: T, fields: U[]): T & Required<Pick<T, U>> => {

    for (let field of fields) {
        const value = data[field];
        if (value === undefined || value === null) {
            throw new Error(`[assertFields] Field "${field}" was not present`);
        }
    }

    // @ts-ignore;
    return data;
};