JavaScript/String/CheckFlatCase.js at master · MMABSOUT/JavaScript · GitHub

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// checkFlatCase method checks if the given string is in flatcase or not. Flatcase is a convention

// where all letters are in lowercase, and there are no spaces between words.

// thisvariable is an example of flatcase. In camelCase it would be thisVariable, snake_case this_variable and so on.

// Problem Source & Explanation: https://en.wikipedia.org/wiki/Naming_convention_(programming)

/**

* checkFlatCase method returns true if the string in flatcase, else return the false.

* @param {string} varname the name of the variable to check.

* @returns {boolean} return true if the string is in flatcase, else return false.

const checkFlatCase = (varname) => {

// firstly, check that input is a string or not.

if (typeof varname !== 'string') {

throw new TypeError('Argument is not a string.')

}

const pat = /^[a-z]*$/

return pat.test(varname)

}

export { checkFlatCase }

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