Remove global buffer use (#3)

* Remove global buffer use

* Feedback

* Rename param

Author: corrideat

.npmrc

@@ -0,0 +1 @@
+save-exact = true

dist/esm/index.mjs

@@ -1,10 +1,18 @@
 import { base58btc, blake2b256 } from '@chelonia/multiformats';
 import scrypt from 'scrypt-async';
 import nacl from 'tweetnacl';
-const strToBuf = (str) => {
+const bufToStr = (() => {
+    const textDecoder = new TextDecoder();
+    return (buf) => {
+        return textDecoder.decode(buf);
+    };
+})();
+const strToBuf = (() => {
     const textEncoder = new TextEncoder();
-    return textEncoder.encode(str);
-};
+    return (str) => {
+        return textEncoder.encode(str);
+    };
+})();
 const blake32Hash = (data) => {
     const uint8array = typeof data === 'string' ? strToBuf(data) : data;
     const digest = blake2b256.digest(uint8array);
@@ -393,7 +401,7 @@ export const decrypt = (inKey, data, ad) => {
         if (!decrypted) {
             throw new Error('Could not decrypt message');
         }
-        return Buffer.from(decrypted).toString('utf-8');
+        return bufToStr(decrypted);
     }
     else if (key.type === CURVE25519XSALSA20POLY1305) {
         if (!key.secretKey) {
@@ -414,7 +422,7 @@ export const decrypt = (inKey, data, ad) => {
         if (!decrypted) {
             throw new Error('Could not decrypt message');
         }
-        return Buffer.from(decrypted).toString('utf-8');
+        return bufToStr(decrypted);
     }
     throw new Error('Unsupported algorithm');
 };

dist/umd/index.cjs

@@ -16,10 +16,18 @@ var __importDefault = (this && this.__importDefault) || function (mod) {
     const multiformats_1 = require("@chelonia/multiformats");
     const scrypt_async_1 = __importDefault(require("scrypt-async"));
     const tweetnacl_1 = __importDefault(require("tweetnacl"));
-    const strToBuf = (str) => {
+    const bufToStr = (() => {
+        const textDecoder = new TextDecoder();
+        return (buf) => {
+            return textDecoder.decode(buf);
+        };
+    })();
+    const strToBuf = (() => {
         const textEncoder = new TextEncoder();
-        return textEncoder.encode(str);
-    };
+        return (str) => {
+            return textEncoder.encode(str);
+        };
+    })();
     const blake32Hash = (data) => {
         const uint8array = typeof data === 'string' ? strToBuf(data) : data;
         const digest = multiformats_1.blake2b256.digest(uint8array);
@@ -418,7 +426,7 @@ var __importDefault = (this && this.__importDefault) || function (mod) {
             if (!decrypted) {
                 throw new Error('Could not decrypt message');
             }
-            return Buffer.from(decrypted).toString('utf-8');
+            return bufToStr(decrypted);
         }
         else if (key.type === exports.CURVE25519XSALSA20POLY1305) {
             if (!key.secretKey) {
@@ -439,7 +447,7 @@ var __importDefault = (this && this.__importDefault) || function (mod) {
             if (!decrypted) {
                 throw new Error('Could not decrypt message');
             }
-            return Buffer.from(decrypted).toString('utf-8');
+            return bufToStr(decrypted);
         }
         throw new Error('Unsupported algorithm');
     };