From 904a866de07b0106a09b2c01ed2aea1bd95bd05b Mon Sep 17 00:00:00 2001
From: Savanni D'Gerinel <savanni@luminescent-dreams.com>
Date: Thu, 20 Apr 2023 22:23:13 -0400
Subject: [PATCH] Experiments with creating a wasm binding for kifu-core

---
 kifu/ffi/kifu-wasm/Cargo.lock       | 285 +++++++++++++++++++++++++++
 kifu/{ => ffi}/kifu-wasm/Cargo.toml |   2 +
 kifu/ffi/kifu-wasm/src/lib.rs       |  30 +++
 kifu/hello-wasm/Cargo.lock          |  32 +++
 kifu/hello-wasm/Cargo.toml          |   1 +
 kifu/hello-wasm/src/lib.rs          |   6 +-
 kifu/kifu-core/Cargo.lock           | 294 +---------------------------
 kifu/kifu-core/Cargo.toml           |   1 -
 kifu/kifu-gtk/Cargo.lock            |   1 -
 kifu/kifu-pwa/converter.js          |   8 +
 kifu/kifu-pwa/index.html            |   2 +-
 kifu/kifu-pwa/sw.js                 |   4 +-
 kifu/kifu-wasm/src/lib.rs           |  14 --
 13 files changed, 367 insertions(+), 313 deletions(-)
 create mode 100644 kifu/ffi/kifu-wasm/Cargo.lock
 rename kifu/{ => ffi}/kifu-wasm/Cargo.toml (77%)
 create mode 100644 kifu/ffi/kifu-wasm/src/lib.rs
 delete mode 100644 kifu/kifu-wasm/src/lib.rs

diff --git a/kifu/ffi/kifu-wasm/Cargo.lock b/kifu/ffi/kifu-wasm/Cargo.lock
new file mode 100644
index 0000000..97f9d62
--- /dev/null
+++ b/kifu/ffi/kifu-wasm/Cargo.lock
@@ -0,0 +1,285 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "autocfg"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
+
+[[package]]
+name = "bumpalo"
+version = "3.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0d261e256854913907f67ed06efbc3338dfe6179796deefc1ff763fc1aee5535"
+
+[[package]]
+name = "bytes"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "89b2fd2a0dcf38d7971e2194b6b6eebab45ae01067456a7fd93d5547a61b70be"
+
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
+[[package]]
+name = "js-sys"
+version = "0.3.61"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "445dde2150c55e483f3d8416706b97ec8e8237c307e5b7b4b8dd15e6af2a0730"
+dependencies = [
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "kifu-core"
+version = "0.1.0"
+dependencies = [
+ "tokio",
+]
+
+[[package]]
+name = "kifu-wasm"
+version = "0.1.0"
+dependencies = [
+ "kifu-core",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+]
+
+[[package]]
+name = "log"
+version = "0.4.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "once_cell"
+version = "1.17.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b7e5500299e16ebb147ae15a00a942af264cf3688f47923b8fc2cd5858f23ad3"
+
+[[package]]
+name = "pin-project-lite"
+version = "0.2.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e0a7ae3ac2f1173085d398531c705756c94a4c56843785df85a60c1a0afac116"
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.56"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b63bdb0cd06f1f4dedf69b254734f9b45af66e4a031e42a7480257d9898b435"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.26"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4424af4bf778aae2051a77b60283332f386554255d722233d09fbfc7e30da2fc"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "syn"
+version = "1.0.109"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "syn"
+version = "2.0.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a34fcf3e8b60f57e6a14301a2e916d323af98b0ea63c599441eec8558660c822"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "tokio"
+version = "1.27.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d0de47a4eecbe11f498978a9b29d792f0d2692d1dd003650c24c76510e3bc001"
+dependencies = [
+ "autocfg",
+ "bytes",
+ "pin-project-lite",
+ "tokio-macros",
+ "windows-sys",
+]
+
+[[package]]
+name = "tokio-macros"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "61a573bdc87985e9d6ddeed1b3d864e8a302c847e40d647746df2f1de209d1ce"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.15",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e5464a87b239f13a63a501f2701565754bae92d243d4bb7eb12f6d57d2269bf4"
+
+[[package]]
+name = "wasm-bindgen"
+version = "0.2.84"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "31f8dcbc21f30d9b8f2ea926ecb58f6b91192c17e9d33594b3df58b2007ca53b"
+dependencies = [
+ "cfg-if",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.84"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95ce90fd5bcc06af55a641a86428ee4229e44e07033963a2290a8e241607ccb9"
+dependencies = [
+ "bumpalo",
+ "log",
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-futures"
+version = "0.4.34"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f219e0d211ba40266969f6dbdd90636da12f75bee4fc9d6c23d1260dadb51454"
+dependencies = [
+ "cfg-if",
+ "js-sys",
+ "wasm-bindgen",
+ "web-sys",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.84"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4c21f77c0bedc37fd5dc21f897894a5ca01e7bb159884559461862ae90c0b4c5"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.84"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2aff81306fcac3c7515ad4e177f521b5c9a15f2b08f4e32d823066102f35a5f6"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.84"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0046fef7e28c3804e5e38bfa31ea2a0f73905319b677e57ebe37e49358989b5d"
+
+[[package]]
+name = "web-sys"
+version = "0.3.61"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e33b99f4b23ba3eec1a53ac264e35a755f00e966e0065077d6027c0f575b0b97"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.45.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75283be5efb2831d37ea142365f009c02ec203cd29a3ebecbc093d52315b66d0"
+dependencies = [
+ "windows-targets",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.42.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e5180c00cd44c9b1c88adb3693291f1cd93605ded80c250a75d472756b4d071"
+dependencies = [
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.42.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "597a5118570b68bc08d8d59125332c54f1ba9d9adeedeef5b99b02ba2b0698f8"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.42.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e08e8864a60f06ef0d0ff4ba04124db8b0fb3be5776a5cd47641e942e58c4d43"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.42.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c61d927d8da41da96a81f029489353e68739737d3beca43145c8afec9a31a84f"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.42.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44d840b6ec649f480a41c8d80f9c65108b92d89345dd94027bfe06ac444d1060"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.42.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8de912b8b8feb55c064867cf047dda097f92d51efad5b491dfb98f6bbb70cb36"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.42.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "26d41b46a36d453748aedef1486d5c7a85db22e56aff34643984ea85514e94a3"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.42.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9aec5da331524158c6d1a4ac0ab1541149c0b9505fde06423b02f5ef0106b9f0"
diff --git a/kifu/kifu-wasm/Cargo.toml b/kifu/ffi/kifu-wasm/Cargo.toml
similarity index 77%
rename from kifu/kifu-wasm/Cargo.toml
rename to kifu/ffi/kifu-wasm/Cargo.toml
index 33b339f..3baee6f 100644
--- a/kifu/kifu-wasm/Cargo.toml
+++ b/kifu/ffi/kifu-wasm/Cargo.toml
@@ -9,4 +9,6 @@ edition = "2021"
 crate-type = ["cdylib"]
 
 [dependencies]
+kifu-core = { path = "../../kifu-core" }
 wasm-bindgen = "0.2"
+wasm-bindgen-futures = "*"
diff --git a/kifu/ffi/kifu-wasm/src/lib.rs b/kifu/ffi/kifu-wasm/src/lib.rs
new file mode 100644
index 0000000..be8d34a
--- /dev/null
+++ b/kifu/ffi/kifu-wasm/src/lib.rs
@@ -0,0 +1,30 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+extern "C" {
+    #[wasm_bindgen(js_namespace = console)]
+    pub fn log(s: &str);
+}
+
+#[wasm_bindgen]
+pub struct Request(kifu_core::Request);
+
+/* Somehow uncommenting this code actually causes the module to not load. Maybe a name conflict?
+ * Don't know.
+#[wasm_bindgen]
+pub struct Response(kifu_core::Response);
+*/
+
+#[wasm_bindgen]
+pub struct CoreApp(kifu_core::CoreApp);
+
+#[wasm_bindgen]
+pub fn coreapp_new() -> CoreApp {
+    log(&format!("coreapp_new"));
+    CoreApp(kifu_core::CoreApp::new())
+}
+
+#[wasm_bindgen]
+pub async fn coreapp_dispatch(core: &CoreApp) {
+    log(&format!("coreapp_dispatch"));
+}
diff --git a/kifu/hello-wasm/Cargo.lock b/kifu/hello-wasm/Cargo.lock
index c602111..d4122d5 100644
--- a/kifu/hello-wasm/Cargo.lock
+++ b/kifu/hello-wasm/Cargo.lock
@@ -17,6 +17,16 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 [[package]]
 name = "hello-wasm"
 version = "0.1.0"
+dependencies = [
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+]
+
+[[package]]
+name = "js-sys"
+version = "0.3.61"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "445dde2150c55e483f3d8416706b97ec8e8237c307e5b7b4b8dd15e6af2a0730"
 dependencies = [
  "wasm-bindgen",
 ]
@@ -96,6 +106,18 @@ dependencies = [
  "wasm-bindgen-shared",
 ]
 
+[[package]]
+name = "wasm-bindgen-futures"
+version = "0.4.34"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f219e0d211ba40266969f6dbdd90636da12f75bee4fc9d6c23d1260dadb51454"
+dependencies = [
+ "cfg-if",
+ "js-sys",
+ "wasm-bindgen",
+ "web-sys",
+]
+
 [[package]]
 name = "wasm-bindgen-macro"
 version = "0.2.84"
@@ -124,3 +146,13 @@ name = "wasm-bindgen-shared"
 version = "0.2.84"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0046fef7e28c3804e5e38bfa31ea2a0f73905319b677e57ebe37e49358989b5d"
+
+[[package]]
+name = "web-sys"
+version = "0.3.61"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e33b99f4b23ba3eec1a53ac264e35a755f00e966e0065077d6027c0f575b0b97"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
diff --git a/kifu/hello-wasm/Cargo.toml b/kifu/hello-wasm/Cargo.toml
index ca049a8..b3dd24b 100644
--- a/kifu/hello-wasm/Cargo.toml
+++ b/kifu/hello-wasm/Cargo.toml
@@ -10,3 +10,4 @@ crate-type = ["cdylib"]
 
 [dependencies]
 wasm-bindgen = "0.2"
+wasm-bindgen-futures = "0.4"
diff --git a/kifu/hello-wasm/src/lib.rs b/kifu/hello-wasm/src/lib.rs
index 2a2c7c1..6194d4f 100644
--- a/kifu/hello-wasm/src/lib.rs
+++ b/kifu/hello-wasm/src/lib.rs
@@ -3,11 +3,13 @@ use wasm_bindgen::prelude::*;
 #[wasm_bindgen]
 extern "C" {
     pub fn alert(s: &str);
+    #[wasm_bindgen(js_namespace = console)]
+    pub fn log(s: &str);
 }
 
 #[wasm_bindgen]
-pub fn greet(name: &str) {
-    alert(&format!("Hello, {}!", name));
+pub async fn greet(name: &str) {
+    log(&format!("Hello, {}! This is an async function.", name));
 }
 
 #[wasm_bindgen]
diff --git a/kifu/kifu-core/Cargo.lock b/kifu/kifu-core/Cargo.lock
index 6880834..0429b7c 100644
--- a/kifu/kifu-core/Cargo.lock
+++ b/kifu/kifu-core/Cargo.lock
@@ -2,30 +2,6 @@
 # It is not intended for manual editing.
 version = 3
 
-[[package]]
-name = "autocfg"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
-
-[[package]]
-name = "bitflags"
-version = "1.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
-
-[[package]]
-name = "bytes"
-version = "1.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89b2fd2a0dcf38d7971e2194b6b6eebab45ae01067456a7fd93d5547a61b70be"
-
-[[package]]
-name = "cfg-if"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
-
 [[package]]
 name = "grid"
 version = "0.9.0"
@@ -35,65 +11,12 @@ dependencies = [
  "no-std-compat",
 ]
 
-[[package]]
-name = "hermit-abi"
-version = "0.2.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ee512640fe35acbfb4bb779db6f0d80704c2cacfa2e39b601ef3e3f47d1ae4c7"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "kifu-core"
 version = "0.1.0"
 dependencies = [
  "grid",
  "thiserror",
- "tokio",
-]
-
-[[package]]
-name = "libc"
-version = "0.2.140"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "99227334921fae1a979cf0bfdfcc6b3e5ce376ef57e16fb6fb3ea2ed6095f80c"
-
-[[package]]
-name = "lock_api"
-version = "0.4.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "435011366fe56583b16cf956f9df0095b405b82d76425bc8981c0e22e60ec4df"
-dependencies = [
- "autocfg",
- "scopeguard",
-]
-
-[[package]]
-name = "log"
-version = "0.4.17"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
-dependencies = [
- "cfg-if",
-]
-
-[[package]]
-name = "memchr"
-version = "2.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
-
-[[package]]
-name = "mio"
-version = "0.8.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b9d9a46eff5b4ff64b45a9e316a6d1e0bc719ef429cbec4dc630684212bfdf9"
-dependencies = [
- "libc",
- "log",
- "wasi",
- "windows-sys",
 ]
 
 [[package]]
@@ -102,45 +25,6 @@ version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b93853da6d84c2e3c7d730d6473e8817692dd89be387eb01b94d7f108ecb5b8c"
 
-[[package]]
-name = "num_cpus"
-version = "1.15.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0fac9e2da13b5eb447a6ce3d392f23a29d8694bff781bf03a16cd9ac8697593b"
-dependencies = [
- "hermit-abi",
- "libc",
-]
-
-[[package]]
-name = "parking_lot"
-version = "0.12.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3742b2c103b9f06bc9fff0a37ff4912935851bee6d36f3c02bcc755bcfec228f"
-dependencies = [
- "lock_api",
- "parking_lot_core",
-]
-
-[[package]]
-name = "parking_lot_core"
-version = "0.9.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9069cbb9f99e3a5083476ccb29ceb1de18b9118cafa53e90c9551235de2b9521"
-dependencies = [
- "cfg-if",
- "libc",
- "redox_syscall",
- "smallvec",
- "windows-sys",
-]
-
-[[package]]
-name = "pin-project-lite"
-version = "0.2.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e0a7ae3ac2f1173085d398531c705756c94a4c56843785df85a60c1a0afac116"
-
 [[package]]
 name = "proc-macro2"
 version = "1.0.52"
@@ -159,57 +43,6 @@ dependencies = [
  "proc-macro2",
 ]
 
-[[package]]
-name = "redox_syscall"
-version = "0.2.16"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
-dependencies = [
- "bitflags",
-]
-
-[[package]]
-name = "scopeguard"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
-
-[[package]]
-name = "signal-hook-registry"
-version = "1.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d8229b473baa5980ac72ef434c4415e70c4b5e71b423043adb4ba059f89c99a1"
-dependencies = [
- "libc",
-]
-
-[[package]]
-name = "smallvec"
-version = "1.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"
-
-[[package]]
-name = "socket2"
-version = "0.4.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "64a4a911eed85daf18834cfaa86a79b7d266ff93ff5ba14005426219480ed662"
-dependencies = [
- "libc",
- "winapi",
-]
-
-[[package]]
-name = "syn"
-version = "1.0.109"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
-dependencies = [
- "proc-macro2",
- "quote",
- "unicode-ident",
-]
-
 [[package]]
 name = "syn"
 version = "2.0.12"
@@ -238,38 +71,7 @@ checksum = "f9456a42c5b0d803c8cd86e73dd7cc9edd429499f37a3550d286d5e86720569f"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.12",
-]
-
-[[package]]
-name = "tokio"
-version = "1.26.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "03201d01c3c27a29c8a5cee5b55a93ddae1ccf6f08f65365c2c918f8c1b76f64"
-dependencies = [
- "autocfg",
- "bytes",
- "libc",
- "memchr",
- "mio",
- "num_cpus",
- "parking_lot",
- "pin-project-lite",
- "signal-hook-registry",
- "socket2",
- "tokio-macros",
- "windows-sys",
-]
-
-[[package]]
-name = "tokio-macros"
-version = "1.8.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d266c00fde287f55d3f1c3e96c500c362a2b8c695076ec180f27918820bc6df8"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 1.0.109",
+ "syn",
 ]
 
 [[package]]
@@ -277,97 +79,3 @@ name = "unicode-ident"
 version = "1.0.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e5464a87b239f13a63a501f2701565754bae92d243d4bb7eb12f6d57d2269bf4"
-
-[[package]]
-name = "wasi"
-version = "0.11.0+wasi-snapshot-preview1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
-
-[[package]]
-name = "winapi"
-version = "0.3.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
-dependencies = [
- "winapi-i686-pc-windows-gnu",
- "winapi-x86_64-pc-windows-gnu",
-]
-
-[[package]]
-name = "winapi-i686-pc-windows-gnu"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
-
-[[package]]
-name = "winapi-x86_64-pc-windows-gnu"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
-
-[[package]]
-name = "windows-sys"
-version = "0.45.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "75283be5efb2831d37ea142365f009c02ec203cd29a3ebecbc093d52315b66d0"
-dependencies = [
- "windows-targets",
-]
-
-[[package]]
-name = "windows-targets"
-version = "0.42.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e5180c00cd44c9b1c88adb3693291f1cd93605ded80c250a75d472756b4d071"
-dependencies = [
- "windows_aarch64_gnullvm",
- "windows_aarch64_msvc",
- "windows_i686_gnu",
- "windows_i686_msvc",
- "windows_x86_64_gnu",
- "windows_x86_64_gnullvm",
- "windows_x86_64_msvc",
-]
-
-[[package]]
-name = "windows_aarch64_gnullvm"
-version = "0.42.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "597a5118570b68bc08d8d59125332c54f1ba9d9adeedeef5b99b02ba2b0698f8"
-
-[[package]]
-name = "windows_aarch64_msvc"
-version = "0.42.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e08e8864a60f06ef0d0ff4ba04124db8b0fb3be5776a5cd47641e942e58c4d43"
-
-[[package]]
-name = "windows_i686_gnu"
-version = "0.42.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c61d927d8da41da96a81f029489353e68739737d3beca43145c8afec9a31a84f"
-
-[[package]]
-name = "windows_i686_msvc"
-version = "0.42.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "44d840b6ec649f480a41c8d80f9c65108b92d89345dd94027bfe06ac444d1060"
-
-[[package]]
-name = "windows_x86_64_gnu"
-version = "0.42.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8de912b8b8feb55c064867cf047dda097f92d51efad5b491dfb98f6bbb70cb36"
-
-[[package]]
-name = "windows_x86_64_gnullvm"
-version = "0.42.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "26d41b46a36d453748aedef1486d5c7a85db22e56aff34643984ea85514e94a3"
-
-[[package]]
-name = "windows_x86_64_msvc"
-version = "0.42.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9aec5da331524158c6d1a4ac0ab1541149c0b9505fde06423b02f5ef0106b9f0"
diff --git a/kifu/kifu-core/Cargo.toml b/kifu/kifu-core/Cargo.toml
index f7c8c30..1913f63 100644
--- a/kifu/kifu-core/Cargo.toml
+++ b/kifu/kifu-core/Cargo.toml
@@ -6,6 +6,5 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-tokio       = { version = "1.26", features = [ "full" ] }
 grid        = { version = "0.9" }
 thiserror   = { version = "1" }
diff --git a/kifu/kifu-gtk/Cargo.lock b/kifu/kifu-gtk/Cargo.lock
index c7faf28..ca3500a 100644
--- a/kifu/kifu-gtk/Cargo.lock
+++ b/kifu/kifu-gtk/Cargo.lock
@@ -668,7 +668,6 @@ version = "0.1.0"
 dependencies = [
  "grid",
  "thiserror",
- "tokio",
 ]
 
 [[package]]
diff --git a/kifu/kifu-pwa/converter.js b/kifu/kifu-pwa/converter.js
index a28fa83..cc0f0b9 100644
--- a/kifu/kifu-pwa/converter.js
+++ b/kifu/kifu-pwa/converter.js
@@ -1,3 +1,5 @@
+import init, { coreapp_new, coreapp_dispatch } from "./kifu_wasm.js";
+
 const inputField = document.getElementById('input-temp');
 const fromUnitField = document.getElementById('input-unit');
 const toUnitField = document.getElementById('output-unit');
@@ -40,3 +42,9 @@ form.addEventListener('input', () => {
     const outputTemp = convertTemp(inputTemp, fromUnit, toUnit);
     outputField.value = (Math.round(outputTemp * 100) / 100) + ' ' + toUnit.toUpperCase();
 });
+
+init().then(async () => { 
+    let app = coreapp_new();
+    await coreapp_dispatch(app);
+    console.log("kifu_wasm successfully initted");
+});
diff --git a/kifu/kifu-pwa/index.html b/kifu/kifu-pwa/index.html
index 57389ec..ec811e3 100644
--- a/kifu/kifu-pwa/index.html
+++ b/kifu/kifu-pwa/index.html
@@ -5,6 +5,7 @@
         <link rel="manifest" href="/manifest.json">
         <link rel="stylesheet" href="converter.css">
         <title>Temperature converter</title>
+        <script type="module" src="converter.js"></script>
     </head>
     <body>
         <h1> Temperature Converter </h1>
@@ -25,7 +26,6 @@
             </select>
             <output name="output-temp" id="output-temp" for="input-temp input-unit output-unit">68 F</output>
         </form>
-        <script src="converter.js"></script>
         <script>
             if('serviceWorker' in navigator) {
                 navigator.serviceWorker.register('/sw.js', { scope: '/' });
diff --git a/kifu/kifu-pwa/sw.js b/kifu/kifu-pwa/sw.js
index 8d6f105..80e0887 100644
--- a/kifu/kifu-pwa/sw.js
+++ b/kifu/kifu-pwa/sw.js
@@ -1,4 +1,4 @@
-const CACHE_NAME = 'temperature-converter-v1';
+const CACHE_NAME = 'temperature-converter-v2';
 
 self.addEventListener('install', event => {
     event.waitUntil((async () => {
@@ -7,6 +7,8 @@ self.addEventListener('install', event => {
             '/',
             '/converter.js',
             '/converter.css',
+            '/kifu_wasm.js',
+            '/kifu_wasm_bg.wasm',
         ]);
     })());
 });
diff --git a/kifu/kifu-wasm/src/lib.rs b/kifu/kifu-wasm/src/lib.rs
deleted file mode 100644
index 7d12d9a..0000000
--- a/kifu/kifu-wasm/src/lib.rs
+++ /dev/null
@@ -1,14 +0,0 @@
-pub fn add(left: usize, right: usize) -> usize {
-    left + right
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn it_works() {
-        let result = add(2, 2);
-        assert_eq!(result, 4);
-    }
-}