@feugene/mu/src/string/strtr.ts

Helpful TS utilities without dependencies

import pregQuote from '~/utils/pregQuote'
import type { TextNumber } from '~/internal/types'

/**
 * Replace all entries in string according to map
 *
 * @param {string} str
 * @param {{}} map
 * @return {string}
 */
export function replaceByTemplate(str: string, map: Record<string, TextNumber>): string {
  let cmpString = '',
    offset = 0,
    find = -1,
    addString = ''

  for (let index = 0; index < str.length; index++) {
    cmpString += '0'
  }

  for (const fr in map) {
    offset = 0

    const val = String(map[fr])
    while ((find = str.indexOf(fr, offset)) !== -1) {
      if (Number.parseInt(cmpString.slice(find, find + fr.length)) !== 0) {
        offset = find + 1
        continue
      }

      for (let k = 0; k < val.length; k++) {
        addString += '1'
      }

      cmpString = cmpString.slice(0, find) + addString + cmpString.slice(find + fr.length, cmpString.length)

      str = str.slice(0, find) + val + str.slice(find + fr.length, str.length)
      offset = find + val.length //+ 1
      addString = ''
    }
  }
  return str
}

export default function strtr(str: string, from: string | Record<string, TextNumber>, to?: string) {
  if (typeof from === 'object') {
    return replaceByTemplate(str, from)
  }
  if (!to) {
    return str
  }
  for (let index = 0; index < from.length; index++) {
    str = str.replace(new RegExp(pregQuote(from.charAt(index)), 'g'), to.charAt(index))
  }

  return str
}