2021-12-11 13:30:26 +05:30
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/**
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* @function countVowels
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* @description Given a string of words or phrases, count the number of vowels.
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2022-02-17 18:00:04 +06:00
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* @param {String} str - The input string
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* @return {Number} - The number of vowels
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2021-12-11 13:30:26 +05:30
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* @example countVowels("ABCDE") => 2
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* @example countVowels("Hello") => 2
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*/
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const countVowels = (str) => {
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if (typeof str !== 'string') {
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throw new TypeError('Input should be a string')
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}
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2022-02-17 18:00:04 +06:00
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const vowelRegex = /[aeiou]/gi
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const vowelsArray = str.match(vowelRegex) || []
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return vowelsArray.length
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2021-12-11 13:30:26 +05:30
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}
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export { countVowels }
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