mktemp/dist/unique_name.mjs

create temporary files and directories

//#region src/unique_name.ts
const placeholderRegex = /(X+)[^X]*$/;
const table = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
const tableLength = 62;
/**
* count the number of possible outcomes for the template
*
* @param template - template string
* @returns count of possible outcomes
*
* @throws {@link TypeError}
* if template is not a string
*/
function getOutcomeCount(template) {
	if (typeof template !== "string") throw new TypeError(`template must be a string: ${template}`);
	const matches = template.match(placeholderRegex);
	if (matches === null || !matches[1]) return 1;
	return tableLength ** matches[1].length;
}
/**
* generate unique name
*
* @param template - template string
* @returns unique name string
*
* @throws {@link TypeError}
* if template is not a string
*/
function generateUniqueName(template) {
	if (typeof template !== "string") throw new TypeError(`template must be a string: ${template}`);
	const matches = template.match(placeholderRegex);
	if (matches === null || !matches[1]) return template;
	const result = [];
	for (let i = 0, len = matches[1].length; i < len; i += 1) result.push(table[Math.floor(Math.random() * tableLength)]);
	const { index = 0 } = matches;
	return template.slice(0, index) + result.join("") + template.slice(index + result.length);
}
//#endregion
export { generateUniqueName, getOutcomeCount };

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