Function untilTrue

src/common.js:107–131

(pred, waitOverride = MIN_WAIT, maxWaits = MAX_WAITS)

}

export async function untilTrue(pred, waitOverride = MIN_WAIT, maxWaits = MAX_WAITS) {
  if ( waitOverride < 0 ) {
    maxWaits = -1;
    waitOverride = MIN_WAIT;
  }
  let waitCount = 0;
  let resolve;
  const pr = new Promise(res => resolve = res);
  setTimeout(checkPred, 0);
  return pr;

  async function checkPred() {
    DEBUG.checkPred && console.log('Checking', pred.toString());
    if ( await pred() ) {
      return resolve(true);
    } else {
      waitCount++;
      if ( waitCount < maxWaits || maxWaits < 0 ) {
        setTimeout(checkPred, waitOverride);
      } else {
        resolve(false);
      }
    }
  }
}