iter-tools-es/impls/$is-sorted/is-sorted.js

The iterable toolbox

const {
  iterableCurry
} = require('../../internal/iterable.js');

const {
  defaultCompareOrder
} = require('../../internal/compare.js');

const {
  __peekerate
} = require('../$peekerate/peekerate.js');

function __isSorted(iterable, compare = defaultCompareOrder) {
  const peekr = __peekerate(iterable);

  while (!peekr.done) {
    const {
      value
    } = peekr;
    peekr.advance();

    if (!peekr.done && compare(value, peekr.value) > 0) {
      peekr.return();
      return false;
    }
  }

  return true;
}

exports.__isSorted = __isSorted;
const isSorted = /*#__PURE__*/iterableCurry(__isSorted, {
  reduces: true,
  minArgs: 0,
  maxArgs: 1
});
exports.isSorted = isSorted;