feat: migrate to ES modules

nodejs/decrypt-dh.js

@@ -1,40 +1,38 @@
-'use strict';
-
-var crypto = require('crypto');
-var ece = require('./ece.js');
+import crypto from 'node:crypto';
+import * as ece from './ece.js';
 
 if (process.argv.length < 6) {
   console.warn('Usage: ' + process.argv.slice(0, 2).join(' ') +
                ' <auth-secret> <receiver-private> <receiver-public> <message> [JSON args]');
   process.exit(2);
 }
 
-var receiver = crypto.createECDH('prime256v1');
+const receiver = crypto.createECDH('prime256v1');
 // node crypto is finicky about accessing the public key
 // 1. it can't generate the public key from the private key
 // 2. it barfs when you try to access the public key, even after you set it
 // This hack squelches the complaints at the cost of a few wasted cycles
 receiver.generateKeys();
 receiver.setPublicKey(Buffer.from(process.argv[4], 'base64url'));
 receiver.setPrivateKey(Buffer.from(process.argv[3], 'base64url'));
-var keymap = {};
+const keymap = {};
 
-var params = {
+const params = {
   version: 'aes128gcm',
   authSecret: process.argv[2],
   privateKey: receiver
 };
 
 if (process.argv.length > 7) {
-  var extra = JSON.parse(process.argv[7]);
+  const extra = JSON.parse(process.argv[7]);
   Object.keys(extra).forEach(function(k) {
     params[k] = extra[k];
   });
 }
 keymap[params.keyid] = receiver;
 
 console.log("Params: " + JSON.stringify(params, null, 2));
-var result = ece.decrypt(Buffer.from(process.argv[5], 'base64url'), params);
+const result = ece.decrypt(Buffer.from(process.argv[5], 'base64url'), params);
 
 console.log(result.toString('base64url'));
 console.log(result.toString('utf-8'));

nodejs/decrypt.js

@@ -1,28 +1,26 @@
-'use strict';
-
-var crypto = require('crypto');
-var ece = require('./ece.js');
+import crypto from 'node:crypto';
+import * as ece from './ece.js';
 
 if (process.argv.length < 4) {
   console.warn('Usage: ' + process.argv.slice(0, 2).join(' ') +
                ' <key> <message> [JSON args]');
   process.exit(2);
 }
 
-var params = {
+const params = {
   version: 'aes128gcm',
   key: process.argv[2]
 };
 
 if (process.argv.length > 4) {
-  var extra = JSON.parse(process.argv[4]);
+  const extra = JSON.parse(process.argv[4]);
   Object.keys(extra).forEach(function(k) {
     params[k] = extra[k];
   });
 }
 
 console.log("Params: " + JSON.stringify(params, null, 2));
-var result = ece.decrypt(Buffer.from(process.argv[3], 'base64url'), params);
+const result = ece.decrypt(Buffer.from(process.argv[3], 'base64url'), params);
 
 console.log(result.toString('base64url'));
 console.log(result.toString('utf-8'));