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