Function getMinCursor

lib/internal/streams/iter/utils.js:79–91

* Compute the minimum cursor across a set of consumers and count how many * consumers are at that cursor. * @param {Set} consumers - Set of objects with a `cursor` property * @param {number} fallback - Cursor to return when set is empty * @returns {{ minCursor: number, minCursorConsumers: number

(consumers, fallback)

 * @returns {{ minCursor: number, minCursorConsumers: number }}
 */
function getMinCursor(consumers, fallback) {
  let minCursor = fallback;
  let minCursorConsumers = 0;
  for (const consumer of consumers) {
    if (consumer.cursor < minCursor) {
      minCursor = consumer.cursor;
      minCursorConsumers = 1;
    } else if (consumer.cursor === minCursor) {
      minCursorConsumers++;
    }
  }
  return { __proto__: null, minCursor, minCursorConsumers };
}

/**
 * Convert a chunk (string or Uint8Array) to Uint8Array.