/**
 * Restrict the values of an object to the specified columns, requiring that
 * all of the specified columns be present in the object.
 * @param obj The object to restrict.
 * @param toColumns The columns to restrict the object to.
 * @returns A new object with only the specified columns.
 */
export declare function restrictValues(obj: any, toColumns: Readonly<string[]>): any;
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