diff --git a/.eslintrc.js b/.eslintrc.js
index 8d4d63e4..47d33768 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -240,7 +240,7 @@ module.exports = {
             },
         },
         {
-            files: ['e2e/cjs/**'],
+            files: ['e2e/**'],
             rules: {
                 'no-restricted-globals': 'off',
             },
diff --git a/e2e/cjs/tests/wasm.js b/e2e/cjs/tests/wasm.js
new file mode 100644
index 00000000..8171f182
--- /dev/null
+++ b/e2e/cjs/tests/wasm.js
@@ -0,0 +1,27 @@
+const wasm = require('@mtcute/wasm')
+const { describe, it, before } = require('mocha')
+const { expect } = require('chai')
+
+before(() => wasm.initAsync())
+
+describe('@mtcute/wasm', () => {
+    const key = Buffer.from('5468697320697320616E20696D706C655468697320697320616E20696D706C65', 'hex')
+    const iv = Buffer.from('6D656E746174696F6E206F6620494745206D6F646520666F72204F70656E5353', 'hex')
+
+    const data = Buffer.from('99706487a1cde613bc6de0b6f24b1c7aa448c8b9c3403e3467a8cad89340f53b', 'hex')
+    const dataEnc = Buffer.from('792ea8ae577b1a66cb3bd92679b8030ca54ee631976bd3a04547fdcb4639fa69', 'hex')
+
+    it('should work with Buffers', () => {
+        expect(wasm.ige256Encrypt(data, key, iv)).to.deep.equal(new Uint8Array(dataEnc))
+        expect(wasm.ige256Decrypt(dataEnc, key, iv)).to.deep.equal(new Uint8Array(data))
+    })
+
+    it('should work with Uint8Arrays', () => {
+        expect(wasm.ige256Encrypt(new Uint8Array(data), new Uint8Array(key), new Uint8Array(iv))).to.deep.equal(
+            new Uint8Array(dataEnc),
+        )
+        expect(wasm.ige256Decrypt(new Uint8Array(dataEnc), new Uint8Array(key), new Uint8Array(iv))).to.deep.equal(
+            new Uint8Array(data),
+        )
+    })
+})
diff --git a/e2e/esm/tests/wasm.js b/e2e/esm/tests/wasm.js
new file mode 100644
index 00000000..acd40735
--- /dev/null
+++ b/e2e/esm/tests/wasm.js
@@ -0,0 +1,28 @@
+import { expect } from 'chai'
+import { before, describe, it } from 'mocha'
+
+import { ige256Decrypt, ige256Encrypt, initAsync } from '@mtcute/wasm'
+
+before(() => initAsync())
+
+describe('@mtcute/wasm', () => {
+    const key = Buffer.from('5468697320697320616E20696D706C655468697320697320616E20696D706C65', 'hex')
+    const iv = Buffer.from('6D656E746174696F6E206F6620494745206D6F646520666F72204F70656E5353', 'hex')
+
+    const data = Buffer.from('99706487a1cde613bc6de0b6f24b1c7aa448c8b9c3403e3467a8cad89340f53b', 'hex')
+    const dataEnc = Buffer.from('792ea8ae577b1a66cb3bd92679b8030ca54ee631976bd3a04547fdcb4639fa69', 'hex')
+
+    it('should work with Buffers', () => {
+        expect(ige256Encrypt(data, key, iv)).to.deep.equal(new Uint8Array(dataEnc))
+        expect(ige256Decrypt(dataEnc, key, iv)).to.deep.equal(new Uint8Array(data))
+    })
+
+    it('should work with Uint8Arrays', () => {
+        expect(ige256Encrypt(new Uint8Array(data), new Uint8Array(key), new Uint8Array(iv))).to.deep.equal(
+            new Uint8Array(dataEnc),
+        )
+        expect(ige256Decrypt(new Uint8Array(dataEnc), new Uint8Array(key), new Uint8Array(iv))).to.deep.equal(
+            new Uint8Array(data),
+        )
+    })
+})
diff --git a/e2e/ts/tests/wasm.ts b/e2e/ts/tests/wasm.ts
new file mode 100644
index 00000000..acd40735
--- /dev/null
+++ b/e2e/ts/tests/wasm.ts
@@ -0,0 +1,28 @@
+import { expect } from 'chai'
+import { before, describe, it } from 'mocha'
+
+import { ige256Decrypt, ige256Encrypt, initAsync } from '@mtcute/wasm'
+
+before(() => initAsync())
+
+describe('@mtcute/wasm', () => {
+    const key = Buffer.from('5468697320697320616E20696D706C655468697320697320616E20696D706C65', 'hex')
+    const iv = Buffer.from('6D656E746174696F6E206F6620494745206D6F646520666F72204F70656E5353', 'hex')
+
+    const data = Buffer.from('99706487a1cde613bc6de0b6f24b1c7aa448c8b9c3403e3467a8cad89340f53b', 'hex')
+    const dataEnc = Buffer.from('792ea8ae577b1a66cb3bd92679b8030ca54ee631976bd3a04547fdcb4639fa69', 'hex')
+
+    it('should work with Buffers', () => {
+        expect(ige256Encrypt(data, key, iv)).to.deep.equal(new Uint8Array(dataEnc))
+        expect(ige256Decrypt(dataEnc, key, iv)).to.deep.equal(new Uint8Array(data))
+    })
+
+    it('should work with Uint8Arrays', () => {
+        expect(ige256Encrypt(new Uint8Array(data), new Uint8Array(key), new Uint8Array(iv))).to.deep.equal(
+            new Uint8Array(dataEnc),
+        )
+        expect(ige256Decrypt(new Uint8Array(dataEnc), new Uint8Array(key), new Uint8Array(iv))).to.deep.equal(
+            new Uint8Array(data),
+        )
+    })
+})