@humanspeak/svelte-headless-table/dist/utils/filter.js

A powerful, headless table library for Svelte that provides complete control over table UI while handling complex data operations like sorting, filtering, pagination, grouping, and row expansion. Build custom, accessible data tables with zero styling opin

/**
 * Type guard that checks if a value is not null.
 *
 * @template T - The non-null type.
 * @param value - The value to check.
 * @returns True if the value is not null.
 * @example
 * ```typescript
 * const items = [1, null, 2, null, 3]
 * const filtered = items.filter(nonNull) // Type: number[]
 * ```
 */
export const nonNull = (value) => value !== null;
/**
 * Type guard that checks if a value is not undefined.
 *
 * @template T - The defined type.
 * @param value - The value to check.
 * @returns True if the value is not undefined.
 * @example
 * ```typescript
 * const items = [1, undefined, 2, undefined, 3]
 * const filtered = items.filter(nonUndefined) // Type: number[]
 * ```
 */
export const nonUndefined = (value) => value !== undefined;
/**
 * Type guard that checks if a value is neither null nor undefined.
 *
 * @template T - The non-nullish type.
 * @param value - The value to check.
 * @returns True if the value is not null and not undefined.
 * @example
 * ```typescript
 * const items = [1, null, 2, undefined, 3]
 * const filtered = items.filter(nonNullish) // Type: number[]
 * ```
 */
export const nonNullish = (value) => value != null;
/**
 * Type guard that checks if a value is a number.
 *
 * @param value - The value to check.
 * @returns True if the value is of type number.
 * @example
 * ```typescript
 * isNumber(42) // Returns true
 * isNumber('42') // Returns false
 * ```
 */
export const isNumber = (value) => typeof value === 'number';