82 lines
2.3 KiB
JavaScript
82 lines
2.3 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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/**
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* Takes an environment variable that should be an integer, attempts to parse
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* it falling back to a default if not set, and handles errors parsing.
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* @param {string|undefined} value
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* @param {number} defaultValue
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* @param {string} variableName
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* @returns {number}
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*/
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export function parseIntFromEnvValue(value, defaultValue, variableName) {
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if (typeof value === 'string' && value.length > 0) {
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const parsedValue = parseInt(value, 10);
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if (isNaN(parsedValue)) {
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throw new Error(`Invalid ${variableName} environment variable: ${value}`);
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}
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return parsedValue;
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} else {
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return defaultValue;
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}
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}
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