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SELECT * FROM animals WHERE family = 'Sharks';

function getSharks() {
  let sharks = [];
  for (let i = 0; i < animals.length; i++) {
    if (animals[i].family === "Sharks") {
      sharks.push(animals[i]);
    }
  }
  return sharks;
}

/**
 * @description Prevent a NoSQL Injection in the search parameters. This is
 * achieved by deleting all query values that begin with `$`.
 */
export function sanitizeQuery(query: any) {
  const keys = Object.keys(query);
  for (let i = 0; i < keys.length; i++) {
    if (/^\$/.test(query[keys[i]])) { delete query[keys[i]]; }
  }
  return query;
}