src/lib/grammar.js


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import { Conjugator } from '@jirimracek/conjugate-esp';

const internals = {
  kVowels: ['a', 'e', 'i', 'o', 'u'],
};

export const pluralize = function (noun) {

	const lastLetter = noun[noun.length - 1];

	if (lastLetter === 's') {
		return noun;
	}

	if (internals.kVowels.indexOf(lastLetter) >= 0) {
		return noun + 's'
	}

	return noun + 'es';
};

export const conjugate = async function(verb) {

	const conjugator = new Conjugator();
	try {
		const conjugation = await conjugator.conjugate(verb);

		if (!conjugation || conjugation.length === 0) {
			console.error('Could not conjugate: ', verb);
			throw new Error(`Could not conjugate: ${verb}`)
		}

		const presentIndicative = conjugation[0]
			.conjugation
			.Indicativo
			.Presente[2];

		return presentIndicative;
	}
	catch (err) {
			return verb.replace(/r$/, '');
	}

};