/**
 * Try to substitute variable inside phrase propositions.
 *
 * @param {Array} phrasePropositions List of phrases propositions.
 * @param {object} zippedVariablesAndValues Object containing variables and corresponding values.
 *
 * @returns {string} Phrases with substituted variables if it's possible, list of unchanged phrase propositions otherwise.
 */
export default function substituteVariables(phrasePropositions: string | string[], zippedVariablesAndValues: Record<string, unknown>): string | string[];