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import assert from 'node:assert'

import test from 'node:test'

import {flesch} from './index.js'

test('flesch', function () {

// @ts-expect-error runtime

assert.ok(Number.isNaN(flesch()), 'NaN when an invalid value is given')

assert.equal(round(flesch({sentence: 1, word: 6, syllable: 6})), 116.145)

assert.equal(round(flesch({sentence: 1, word: 16, syllable: 22})), 74.27)

assert.equal(round(flesch({sentence: 1, word: 13, syllable: 26})), 24.44)

})

/**

* @param {number} value

* @returns {number}

*/

function round(value) {

return Math.round(value * 1e6) / 1e6

}