@yookue/ts-lang-utils/dist/esm/util/StringUtils/join.js

Common lang utilities for typescript

import { defaultString } from "./defaultString";
export function join(element, separator, filter) {
  if (element === undefined || element === null) {
    return undefined;
  }
  if (Array.isArray(element)) {
    if (!element.length) {
      return undefined;
    }
    if (!filter) {
      return element.join(defaultString(separator));
    }
    var alias = element.filter(filter);
    return !alias || !alias.length ? undefined : alias.join(defaultString(separator));
  }
  return !filter ? element.toString() : filter(element) ? element.toString() : undefined;
}