johnloy

man unix_command | col -bx > man_page_file.txt

johnloy

function convertFromBaseToBase(str, fromBase, toBase) {
  var num = parseInt(str, fromBase);
  return num.toString(toBase);
}

johnloy

// from http://scratch99.com/web-development/javascript/convert-bytes-to-mb-kb/
function bytesToSize(bytes) {
    var sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];
    if (bytes == 0) return 'n/a';
    var i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024)));
    if (i == 0) return bytes + ' ' + sizes[i];
    return (bytes / Math.pow(1024, i)).toFixed(1) + ' ' + sizes[i];
};

johnloy

export declare type Constructor<T> = new (...args: any[]) => T

johnloy

new Date(seconds * 1000).toISOString().substr(11, 8)

johnloy

confirm() {
  while true; do
    read -p "$1 ([y]/n) " -r
    REPLY=${REPLY:-"y"}
    if [[ $REPLY =~ ^[Yy]$ ]]; then
      return 1
    elif [[ $REPLY =~ ^[Nn]$ ]]; then
      return 0
    fi
  done

johnloy

 append_line() {
   set -e
 
   local update line file pat lno
   update="$1"
   line="$2"
   file="$3"
   pat="${4:-}"
   lno=""
 

johnloy

function isDstObserved(date = new Date()) {
  var jan = new Date(0, 1);
  var jul = new Date(6, 1);
  const stdTimezoneOffset = Math.max(
    jan.getTimezoneOffset(),
    jul.getTimezoneOffset()
  );
  return date.getTimezoneOffset() < stdTimezoneOffset;
}

johnloy

// tzName is one of the tz database names at https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
// Example: 'Pacific/Honolulu' (UTC-10)
function getUTCOffset(tzName, date) {
  date = new Date(date || Date.now());
  date.setMilliseconds(0);

  // 1) Get the local UTC offset
  // ---------------------------
  // Convert date UTC offset to true hours offset.
  // Date.prototype.getTimezoneOffset() confusingly returns positive

johnloy

rollup -c ; cat my-element.bundled.js | gzip -9 | wc -c ; rm my-element.bundled.js