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

Common lang utilities for typescript

import { defaultIfBlank } from "./defaultIfBlank";
import { defaultString } from "./defaultString";
import { getLength } from "./getLength";
import { repeat } from "./repeat";
export function leftPad(text, size, pad) {
  if (size === undefined || size <= 0) {
    return text;
  }
  var textLength = getLength(text);
  var needLength = size - textLength;
  if (needLength <= 0) {
    return text;
  }
  var padding = defaultIfBlank(pad, ' ');
  var padLength = getLength(padding);
  var quotient = Math.floor(needLength / padLength);
  var remainder = needLength % padLength;
  var result = '';
  if (quotient > 0) {
    result = result.concat(repeat(padding, quotient));
  }
  if (remainder > 0) {
    result = result.concat(padding.substring(0, remainder));
  }
  return result.concat(defaultString(text));
}