Implement CSON parser from scratch without cson-parser dependency

Co-authored-by: streamich <9773803+streamich@users.noreply.github.com>

Author: Copilot

package.json

@@ -67,7 +67,6 @@
   "dependencies": {
     "@jsonjoy.com/base64": "^1.1.1",
     "@jsonjoy.com/util": "^1.1.2",
-    "cson-parser": "^4.0.9",
     "hyperdyperid": "^1.2.0",
     "thingies": "^1.20.0"
   },

src/cson/CsonDecoder.ts

@@ -1,8 +1,10 @@
 import {Reader} from '@jsonjoy.com/util/lib/buffers/Reader';
 import type {BinaryJsonDecoder, PackValue} from '../types';
+import {CsonParser} from './CsonParser';
 
 export class CsonDecoder implements BinaryJsonDecoder {
   public reader = new Reader();
+  private parser = new CsonParser();
 
   public read(uint8: Uint8Array): unknown {
     this.reader.reset(uint8);
@@ -12,11 +14,10 @@ export class CsonDecoder implements BinaryJsonDecoder {
   public decode(uint8: Uint8Array): unknown {
     // Convert Uint8Array to string
     const csonText = new TextDecoder().decode(uint8);
-    
+
     try {
-      // Use the cson-parser library to parse the CSON text
-      const csonParser = require('cson-parser');
-      return csonParser.parse(csonText);
+      // Use our custom CSON parser
+      return this.parser.parse(csonText);
     } catch (error) {
       const errorMessage = error instanceof Error ? error.message : String(error);
       throw new Error(`CSON parsing error: ${errorMessage}`);
@@ -29,4 +30,4 @@ export class CsonDecoder implements BinaryJsonDecoder {
     const remainingBytes = this.reader.uint8.slice(this.reader.x);
     return this.decode(remainingBytes);
   }
-}
+}

src/cson/CsonEncoder.ts

@@ -8,7 +8,7 @@ export class CsonEncoder implements BinaryJsonEncoder {
 
   constructor(
     public readonly writer: IWriter & IWriterGrowable,
-    options: CsonEncoderOptions = {}
+    options: CsonEncoderOptions = {},
   ) {
     this.options = {
       indent: options.indent ?? 2,
@@ -94,19 +94,19 @@ export class CsonEncoder implements BinaryJsonEncoder {
   }
 
   public writeBin(buf: Uint8Array): void {
-    // Convert binary data to base64 string in CSON format  
+    // Convert binary data to base64 string in CSON format
     const writer = this.writer;
     const length = buf.length;
-    
+
     writer.ascii("Buffer.from('");
-    
+
     // Use the existing base64 utility from the json-pack library
     const tempBuffer = new ArrayBuffer(((length + 2) / 3) * 4);
     const tempView = new DataView(tempBuffer);
     const base64Length = toBase64Bin(buf, 0, length, tempView, 0);
     const base64Array = new Uint8Array(tempBuffer, 0, base64Length);
     const base64String = new TextDecoder().decode(base64Array);
-    
+
     writer.ascii(base64String);
     writer.ascii("', 'base64')");
   }
@@ -226,4 +226,4 @@ export class CsonEncoder implements BinaryJsonEncoder {
     }
     return /^[a-zA-Z_$][a-zA-Z0-9_$]*$/.test(key);
   }
-}
+}