@lou.codes/cron/dist/stringifyList.js

⏲️ Cron Quartz and Cron UNIX expression parser

import { isListField } from "./isListField.js";
import { stringifyRange } from "./stringifyRange.js";
import { LIST_EXPRESSION_SEPARATOR_TOKEN } from "./tokens.js";
/**
 * Turns cron list into a string.
 *
 * @category Cron Object
 * @example
 * ```typescript
 * stringifyList([10, 11, 13]); // "10,11,13"
 * ```
 * @see {@link isListField}
 * @see {@link stringifyRange}
 *
 * @param field List cron object field
 * @returns String list or `undefined` if it isn't a list.
 */
export const stringifyList = field =>
	isListField(field) ?
		field
			.map(item => stringifyRange(item) ?? `${item}`)
			.join(LIST_EXPRESSION_SEPARATOR_TOKEN)
	:	undefined;