restructuring the project

src/structs/ItemBinary.js

@@ -0,0 +1,48 @@
+/**
+ * @module structs
+ */
+
+// TODO: ItemBinary should be able to merge with right (similar to other items). Or the other items (ItemJSON) should not be able to merge - extra byte + consistency
+
+import { Item } from './Item.js'
+import * as stringify from 'y-protocols/utils/structStringify.js'
+import * as encoding from 'funlib/encoding.js'
+import * as decoding from 'funlib/decoding.js'
+import { Y } from '../utils/Y.js' // eslint-disable-line
+
+export class ItemBinary extends Item {
+  constructor () {
+    super()
+    this._content = null
+  }
+  _copy () {
+    let struct = super._copy()
+    struct._content = this._content
+    return struct
+  }
+  /**
+   * @param {Y} y
+   * @param {decoding.Decoder} decoder
+   */
+  _fromBinary (y, decoder) {
+    const missing = super._fromBinary(y, decoder)
+    this._content = decoding.readPayload(decoder)
+    return missing
+  }
+  /**
+   * @param {encoding.Encoder} encoder
+   */
+  _toBinary (encoder) {
+    super._toBinary(encoder)
+    encoding.writePayload(encoder, this._content)
+  }
+  /**
+   * Transform this YXml Type to a readable format.
+   * Useful for logging as all Items and Delete implement this method.
+   *
+   * @private
+   */
+  _logString () {
+    return stringify.logItemHelper('ItemBinary', this)
+  }
+}