@fruits-chain/react-native-xiaoshu/lib/module/helpers/format/number.js

🌈 React Native UI library

"use strict";

export function range(num, min, max) {
  return Math.min(Math.max(num, min), max);
}
function trimExtraChar(value, char, regExp) {
  const index = value.indexOf(char);
  if (index === -1) {
    return value;
  }
  if (char === '-' && index !== 0) {
    return value.slice(0, index);
  }
  return value.slice(0, index + 1) + value.slice(index).replace(regExp, '');
}
export function formatNumber(value, allowDot = true, allowMinus = true) {
  if (allowDot) {
    value = trimExtraChar(value, '.', /\./g);
  } else {
    value = value.split('.')[0];
  }
  if (allowMinus) {
    value = trimExtraChar(value, '-', /-/g);
  } else {
    value = value.replace(/-/, '');
  }
  const regExp = allowDot ? /[^-0-9.]/g : /[^-0-9]/g;
  return value.replace(regExp, '');
}
export function formatThousandths(t, sign) {
  !sign && (sign = ',');
  const parts = t.split('.');
  parts[0] = parts[0].replace(/\B(?=(\d{3})+(?!\d))/g, sign);
  return parts.join('.');
}
export function formatDecimal(t, n) {
  const value = formatNumber(t);
  const mark = /-/.test(value) ? '-' : '';
  const values = (mark ? value.split('-')[1] || '' : value).split('.');
  const integer = values[0];
  const decimal = values[1] || '';
  if (n < 0) {
    if (values.length === 1) {
      return `${mark}${integer}`;
    }
    return [`${mark}${integer}`, decimal].join('.');
  } else if (values.length === 1 || n === 0) {
    return `${mark}${integer}`;
  } else {
    const d = decimal.match(new RegExp(`\\d{0,${n}}`))?.[0];
    return `${mark}${integer}.${d}`;
  }
}
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