diff --git a/src/base/vesting/Vesting.svelte b/src/base/vesting/Vesting.svelte
index 19f37c81c..c5e5fec1c 100644
--- a/src/base/vesting/Vesting.svelte
+++ b/src/base/vesting/Vesting.svelte
@@ -2,9 +2,9 @@
   import { onMount } from 'svelte';
   import { get, derived, writable } from 'svelte/store';
   import { ethers } from 'ethers';
-  import { session, shortAddress } from '@app/session.js';
-  import { STATE, state } from './state.js';
-  import { getInfo, withdrawVested } from './vesting.js';
+  import { session, shortAddress } from '@app/session';
+  import { State, state } from './state';
+  import { getInfo, withdrawVested } from './vesting';
 
   let input;
 
@@ -12,20 +12,20 @@
     input.focus();
   });
 
-  export let config = null;
+  export let config;
 
   let contractAddress = "";
   const info = writable(null);
 
   async function loadContract(config) {
-    state.set(STATE.LOADING);
+    state.set(State.Loading);
     info.set(await getInfo(contractAddress, config));
-    state.set(STATE.IDLE);
+    state.set(State.Idle);
   }
 
   function reset() {
     $info = null;
-    state.set(STATE.IDLE);
+    state.set(State.Idle);
   }
 
   let isBeneficiary = derived([session, info], ([$s, $i]) => {
@@ -58,7 +58,7 @@
         {contractAddress}
       </div>
       <div class="modal-body">
-        {#if $state === STATE.WITHDRAWN}
+        {#if $state === State.Withdrawn}
           Tokens successfully withdrawn to {shortAddress($info.beneficiary)}.
         {:else}
           <table>
@@ -71,15 +71,15 @@
       </div>
       <div class="modal-actions">
         {#if $isBeneficiary}
-          {#if $state === STATE.WITHDRAWING_SIGN}
+          {#if $state === State.WithdrawingSign}
             <button disabled data-waiting class="primary small">
               Waiting for signature...
             </button>
-          {:else if $state === STATE.WITHDRAWING}
+          {:else if $state === State.Withdrawing}
             <button disabled data-waiting class="primary small">
               Withdrawing...
             </button>
-          {:else if $state === STATE.IDLE}
+          {:else if $state === State.Idle}
             <button on:click={() => withdrawVested(contractAddress, config)} class="primary small">
               Withdraw
             </button>
@@ -101,7 +101,7 @@
             size="40"
             placeholder=""
             class="subdomain"
-            disabled={$state === STATE.LOADING}
+            disabled={$state === State.Loading}
             type="text"
             bind:this={input}
             bind:value={contractAddress}
@@ -111,8 +111,8 @@
       <button
         on:click={() => loadContract(config)}
         class="primary"
-        data-waiting={$state === STATE.LOADING || null}
-        disabled={$state === STATE.LOADING}
+        data-waiting={$state === State.Loading || null}
+        disabled={$state === State.Loading}
       >
         Load
       </button>
diff --git a/src/base/vesting/state.js b/src/base/vesting/state.js
deleted file mode 100644
index ea8b19e92..000000000
--- a/src/base/vesting/state.js
+++ /dev/null
@@ -1,18 +0,0 @@
-import { derived, writable } from "svelte/store";
-
-export const STATE = {
-  ERROR: -1,
-  IDLE: 0,
-  LOADING: 1,
-  FOUND: 2,
-  NOT_FOUND: 3,
-  WITHDRAWING_SIGN: 4,
-  WITHDRAWING: 5,
-  WITHDRAWN: 6,
-};
-
-export const state = writable(STATE.IDLE);
-
-state.subscribe(s => {
-  console.log("State", s);
-});
diff --git a/src/base/vesting/state.ts b/src/base/vesting/state.ts
new file mode 100644
index 000000000..1dde8db3f
--- /dev/null
+++ b/src/base/vesting/state.ts
@@ -0,0 +1,18 @@
+import { derived, writable } from "svelte/store";
+
+export enum State {
+  Error = -1,
+  Idle = 0,
+  Loading = 1,
+  Found = 2,
+  NotFound = 3,
+  WithdrawingSign = 4,
+  Withdrawing = 5,
+  Withdrawn = 6,
+};
+
+export const state = writable(State.Idle);
+
+state.subscribe(s => {
+  console.log("State", s);
+});
diff --git a/src/base/vesting/vesting.js b/src/base/vesting/vesting.ts
similarity index 92%
rename from src/base/vesting/vesting.js
rename to src/base/vesting/vesting.ts
index 1bd7ba5bf..0fd85e8ef 100644
--- a/src/base/vesting/vesting.js
+++ b/src/base/vesting/vesting.ts
@@ -1,7 +1,7 @@
 import { ethers } from "ethers";
 import { formatBalance } from "@app/utils";
 import { refreshBalance } from "@app/session";
-import { STATE, state } from "./state.js";
+import { State, state } from "./state";
 
 const abi = [
   "function token() view returns (address)",
@@ -24,14 +24,14 @@ export async function withdrawVested(address, config) {
   const contract = new ethers.Contract(address, abi, config.provider);
   const signer = config.provider.getSigner();
 
-  state.set(STATE.WITHDRAWING_SIGN);
+  state.set(State.WithdrawingSign);
 
   let tx = await contract.connect(signer).withdrawVested();
 
-  state.set(STATE.WITHDRAWING);
+  state.set(State.Withdrawing);
   await tx.wait();
   refreshBalance(config);
-  state.set(STATE.WITHDRAWN);
+  state.set(State.Withdrawn);
 }
 
 export async function getInfo(address, config) {
diff --git a/src/index.js b/src/index.ts
similarity index 100%
rename from src/index.js
rename to src/index.ts