fix: while loop stealing cycles

src/json.js

@@ -1,5 +1,9 @@
 import * as std from 'std';
-import { put } from './csp.js';
+import { setTimeout } from 'os';
+import { put, take } from './csp.js'; 
+
+const timeout = ms =>
+  new Promise(res => setTimeout(res, ms));
 
 const [
   LEFT_PAREN, LEFT_BRACK,
@@ -19,7 +23,7 @@ const WHITESPACE = [
   0x202f, 0x205f, 0x2060, 0x3000, 0xfeff,
 ];
 
-export async function readJSON(file, out) {
+export async function readJSON(file, json) {
   let byte, depth = 0, object = false, string = false, buffer = [];
 
   while (byte = file.getByte(), byte !== -1) {
@@ -41,16 +45,17 @@ export async function readJSON(file, out) {
       if (!WHITESPACE.includes(byte)) buffer.push(byte);
       if ((object || buffer.length && byte === WHITESPACE[1]) && depth === 0) {
         const output = buffer.map(c => String.fromCharCode(c)).join('');
-        await put(out, output);
+        await put(json, output);
         object = false;
         buffer = [];
+        await timeout(0);
       }
     } else buffer.push(byte);
   }
 
   if (buffer.length) {
     const output = buffer.map(c => String.fromCharCode(c)).join('');
-    await put(out, output);
+    await put(json, output);
   }
 };