ln-telegram/interface/format_tokens.js

Lightning Network Telegram bot commands

const fullTokensType = 'full';
const isString = n => typeof n === 'string';
const {round} = Math;
const roundedTokensType = 'rounded';
const tokensAsBigUnit = tokens => (tokens / 1e8).toFixed(8);

/** Format tokens for display

  {
    [none]: <No Value Substitute String>
    tokens: <Tokens Number>
  }

  @returns
  {
    display: <Formtted Tokens String>
  }
*/
module.exports = ({none, tokens}) => {
  if (isString(none) && !tokens) {
    return {display: none};
  }

  // Exit early for tokens environment displays the value with no leading zero
  if (process.env.PREFERRED_TOKENS_TYPE === fullTokensType) {
    return {display: tokens.toLocaleString()};
  }

  // Exit early for tokens environment displaying a rounded, non-leading zero
  if (process.env.PREFERRED_TOKENS_TYPE === roundedTokensType) {
    return {display: round(tokens).toLocaleString()};
  }

  return {display: tokensAsBigUnit(tokens)};
};