* Demo for storage

packages/wasm-utils/demo/storage/demostorage.lpi

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+<?xml version="1.0" encoding="UTF-8"?>
+<CONFIG>
+  <ProjectOptions>
+    <Version Value="12"/>
+    <General>
+      <Flags>
+        <MainUnitHasCreateFormStatements Value="False"/>
+        <MainUnitHasTitleStatement Value="False"/>
+        <MainUnitHasScaledStatement Value="False"/>
+      </Flags>
+      <SessionStorage Value="InProjectDir"/>
+      <Title Value="demostorage"/>
+      <UseAppBundle Value="False"/>
+      <ResourceType Value="res"/>
+    </General>
+    <BuildModes>
+      <Item Name="Default" Default="True"/>
+    </BuildModes>
+    <PublishOptions>
+      <Version Value="2"/>
+      <UseFileFilters Value="True"/>
+    </PublishOptions>
+    <RunParams>
+      <FormatVersion Value="2"/>
+    </RunParams>
+    <Units>
+      <Unit>
+        <Filename Value="demostorage.lpr"/>
+        <IsPartOfProject Value="True"/>
+      </Unit>
+    </Units>
+  </ProjectOptions>
+  <CompilerOptions>
+    <Version Value="11"/>
+    <Target>
+      <Filename Value="demostorage.wasm" ApplyConventions="False"/>
+    </Target>
+    <SearchPaths>
+      <IncludeFiles Value="$(ProjOutDir)"/>
+      <OtherUnitFiles Value="../../src"/>
+      <UnitOutputDirectory Value="lib/$(TargetCPU)-$(TargetOS)"/>
+    </SearchPaths>
+  </CompilerOptions>
+  <Debugging>
+    <Exceptions>
+      <Item>
+        <Name Value="EAbort"/>
+      </Item>
+      <Item>
+        <Name Value="ECodetoolError"/>
+      </Item>
+      <Item>
+        <Name Value="EFOpenError"/>
+      </Item>
+    </Exceptions>
+  </Debugging>
+</CONFIG>

packages/wasm-utils/demo/storage/demostorage.lpr

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+program demostorage;
+
+{$mode objfpc}
+{$h+}
+
+uses wasm.storage.objects;
+
+procedure DumpKeys(aStorage : TWasmStorage);
+
+var
+  I,lCount : Integer;
+  lKey,lValue : UTF8String;
+
+begin
+  lCount:=aStorage.Count;
+  Writeln('Have ',lCount,' keys');
+  For I:=0 to lCount-1 do
+    begin
+    lKey:=aStorage.Keys[i];
+    lValue:=aStorage.Items[lKey];
+    Writeln('[',I,'] ',lKey,' = "',lValue,'"');
+    end;
+end;
+
+var
+  lStorage : TWasmLocalStorage;
+  lKey,lValue : UTF8String;
+
+begin
+  lStorage:=TWasmLocalStorage.Create;
+  Writeln('Existing keys at start: ');
+  DumpKeys(lStorage);
+  Writeln('Setting key "xyz" to value "123"');
+  lStorage.Items['xyz']:='123';
+  Writeln('Retrieving value of key "xyz" : "',lStorage.Items['xyz'],'"');
+  Writeln('Deleting key "xyz"');
+  lStorage.Remove('xyz');
+  Writeln('Retrieving value of key "xyz" (again): "',lStorage.Items['xyz'],'"');
+  Writeln('Existing keys at end: ');
+  DumpKeys(lStorage);
+end.
+