Merge pull request tree-sitter#1643 from fengT-T/master

Fix: Set https proxy for npm cli install script

Author: maxbrunsfeld

cli/npm/install.js

@@ -2,6 +2,7 @@
 
 const fs = require('fs');
 const zlib = require('zlib');
+const http = require('http');
 const https = require('https');
 const packageJSON = require('./package.json');
 
@@ -64,7 +65,25 @@ file.on('finish', () => {
 
 // Follow redirects.
 function get(url, callback) {
-  https.get(url, response => {
+  const requestUrl = new URL(url)
+  let request = https
+  let requestConfig = requestUrl
+  const proxyEnv = process.env['HTTPS_PROXY'] || process.env['https_proxy']
+
+  if (proxyEnv) {
+    const proxyUrl = new URL(proxyEnv)
+    request = proxyUrl.protocol === 'https:' ? https : http
+    requestConfig = {
+      hostname: proxyUrl.hostname,
+      port: proxyUrl.port,
+      path: requestUrl.toString(),
+      headers: {
+        Host: requestUrl.hostname
+      }
+    }
+  }
+
+  request.get(requestConfig, response => {
     if (response.statusCode === 301 || response.statusCode === 302) {
       get(response.headers.location, callback);
     } else {