const decodeUriComponent = require('decode-uri-component');
 
decodeUriComponent('%25');
//=> '%'
 
decodeUriComponent('%');
//=> '%'
 
decodeUriComponent('st%C3%A5le');
//=> 'ståle'
 
decodeUriComponent('%st%C3%A5le%');
//=> '%ståle%'
 
decodeUriComponent('%%7Bst%C3%A5le%7D%');
//=> '%{ståle}%'
 
decodeUriComponent('%7B%ab%%7C%de%%7D');
//=> '{%ab%|%de%}'
 
decodeUriComponent('%FE%FF');
//=> '\uFFFD\uFFFD'
 
decodeUriComponent('%C2');
//=> '\uFFFD'
 
decodeUriComponent('%C2%B5');
//=> 'µ'