refactor: use aws-sdk-js instead of boto (#24863)

* refactor: use js instead of boto for s3put

* replace merge-electron-checksums.py with js, remove boto

* fix auth

* actually pass the env to execute()

script/lib/s3put.js

@@ -0,0 +1,38 @@
+/* eslint-disable camelcase */
+const AWS = require('aws-sdk');
+const fs = require('fs');
+const path = require('path');
+AWS.config.update({ region: 'us-west-2' });
+const s3 = new AWS.S3({ apiVersion: '2006-03-01' });
+
+const args = require('minimist')(process.argv.slice(2));
+
+let { bucket, prefix = '/', key_prefix = '', grant, _: files } = args;
+if (prefix && !prefix.endsWith(path.sep)) prefix = path.resolve(prefix) + path.sep;
+
+function filenameToKey (file) {
+  file = path.resolve(file);
+  if (file.startsWith(prefix)) file = file.substr(prefix.length);
+  return key_prefix + file.replace(path.sep, '/');
+}
+
+let anErrorOccurred = false;
+function next (done) {
+  const file = files.shift();
+  if (!file) return done();
+  s3.upload({
+    Bucket: bucket,
+    Key: filenameToKey(file),
+    Body: fs.createReadStream(file),
+    ACL: grant
+  }, (err, data) => {
+    if (err) {
+      console.error(err);
+      anErrorOccurred = true;
+    }
+    next(done);
+  });
+}
+next(() => {
+  process.exit(anErrorOccurred ? 1 : 0);
+});