const http = require('http');

const url = new URL('http://httpbin.org/anything?a=~');
url.search = url.searchParams.toString(); // trigger normalization

const request = http.get(url, response => {
    const chunks = [];

    response.on('data', chunk => {
        chunks.push(chunk);
    });

    response.once('end', () => {
        console.log(request._header);
        // Actual:
        // GET /anything?a=%7E
        //
        // Expected:
        // GET /anything?a=~
    });
})