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sorting.ts
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51 lines (47 loc) · 980 Bytes
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import { OrderBy } from "../types";
/**
* Creates an ascending order condition
* @param key The column name to sort by
* @returns An OrderBy condition
*/
export function asc<T>(key: keyof T): OrderBy<T> {
return {
key,
direction: "asc"
};
}
/**
* Creates a descending order condition
* @param key The column name to sort by
* @returns An OrderBy condition
*/
export function desc<T>(key: keyof T): OrderBy<T> {
return {
key,
direction: "desc"
};
}
/**
* Creates a nulls first order condition
* @param key The column name to sort by
* @returns An OrderBy condition
*/
export function nullsFirst<T>(key: keyof T): OrderBy<T> {
return {
key,
direction: "asc",
nulls: "first"
};
}
/**
* Creates a nulls last order condition
* @param key The column name to sort by
* @returns An OrderBy condition
*/
export function nullsLast<T>(key: keyof T): OrderBy<T> {
return {
key,
direction: "desc",
nulls: "last"
};
}