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- // @ts-check
- const FALSE_VALUES = [
- false,
- 0,
- '0',
- 'f',
- 'F',
- 'false',
- 'FALSE',
- 'off',
- 'OFF',
- ];
- /**
- * @param {any} value
- * @returns {boolean}
- */
- const isTruthy = value =>
- value && !FALSE_VALUES.includes(value);
- exports.isTruthy = isTruthy;
- /**
- * See app/lib/ascii_folder.rb for the canon definitions
- * of these constants
- */
- const NON_ASCII_CHARS = 'ÀÁÂÃÄÅàáâãäåĀāĂ㥹ÇçĆćĈĉĊċČčÐðĎďĐđÈÉÊËèéêëĒēĔĕĖėĘęĚěĜĝĞğĠġĢģĤĥĦħÌÍÎÏìíîïĨĩĪīĬĭĮįİıĴĵĶķĸĹĺĻļĽľĿŀŁłÑñŃńŅņŇňʼnŊŋÒÓÔÕÖØòóôõöøŌōŎŏŐőŔŕŖŗŘřŚśŜŝŞşŠšſŢţŤťŦŧÙÚÛÜùúûüŨũŪūŬŭŮůŰűŲųŴŵÝýÿŶŷŸŹźŻżŽž';
- const EQUIVALENT_ASCII_CHARS = 'AAAAAAaaaaaaAaAaAaCcCcCcCcCcDdDdDdEEEEeeeeEeEeEeEeEeGgGgGgGgHhHhIIIIiiiiIiIiIiIiIiJjKkkLlLlLlLlLlNnNnNnNnnNnOOOOOOooooooOoOoOoRrRrRrSsSsSsSssTtTtTtUUUUuuuuUuUuUuUuUuUuWwYyyYyYZzZzZz';
- /**
- * @param {string} str
- * @returns {string}
- */
- function foldToASCII(str) {
- const regex = new RegExp(NON_ASCII_CHARS.split('').join('|'), 'g');
- return str.replace(regex, function(match) {
- const index = NON_ASCII_CHARS.indexOf(match);
- return EQUIVALENT_ASCII_CHARS[index];
- });
- }
- exports.foldToASCII = foldToASCII;
- /**
- * @param {string} str
- * @returns {string}
- */
- function normalizeHashtag(str) {
- return foldToASCII(str.normalize('NFKC').toLowerCase()).replace(/[^\p{L}\p{N}_\u00b7\u200c]/gu, '');
- }
- exports.normalizeHashtag = normalizeHashtag;
- /**
- * @param {string|string[]} arrayOrString
- * @returns {string}
- */
- function firstParam(arrayOrString) {
- if (Array.isArray(arrayOrString)) {
- return arrayOrString[0];
- } else {
- return arrayOrString;
- }
- }
- exports.firstParam = firstParam;
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