Update dependency webpack to v4.43.0

2020-05-01 16:41:09 +00:00
172 changed files with 20314 additions and 2247 deletions
--- a/.babelrc
+++ b/.babelrc
@ -1,39 +0,0 @@
-{
-  "presets": [
-    [
-      "@babel/preset-typescript",
-      {
-        "jsxPragma": "h"
-      }
-    ],
-    [
-      "@parcel/babel-preset-env",
-      {
-        "loose": true,
-        "bugfixes": true
-      }
-    ]
-  ],
-  "plugins": [
-    [
-      "@babel/plugin-transform-react-jsx",
-      {
-        "loose": true,
-        "pragma": "h",
-        "pragmaFrag": "Fragment"
-      }
-    ],
-    [
-      "@babel/plugin-proposal-decorators",
-      {
-        "legacy": true
-      }
-    ],
-    [
-      "@babel/plugin-proposal-class-properties",
-      {
-        "loose": true
-      }
-    ]
-  ]
-}
--- a/.clang-format
+++ b/.clang-format
@ -1,2 +0,0 @@
-BasedOnStyle: Chromium
-ColumnLimit: 100
--- a/.gitignore
+++ b/.gitignore
@ -4,6 +4,3 @@ node_modules
 *.scss.d.ts
 *.css.d.ts
 *.o
-.parcel-cache
-.cache
-/public
--- a/.parcelrc
+++ b/.parcelrc
@ -1,9 +0,0 @@
-{
-  "extends": "@parcel/config-default",
-  "transformers": {
-    "*.wasm": ["@parcel/transformer-raw"]
-  },
-  "packagers": {
-    "*.wasm": "@parcel/packager-raw"
-  }
-}
--- a/.proxyrc.js
+++ b/.proxyrc.js
@ -1,15 +0,0 @@
-module.exports = function(app) {
-  // `app` is an Express instance
-  app.use(function(req, res, next) {
-    const sh = res.setHeader;
-    res.setHeader = function(key, value) {
-      // remove pointless/incorrect charset from binary responses:
-      if (/^content-type$/i.test(key)) {
-        const m = value && value.match(/^(image\/|application\/wasm); charset=.+$/);
-        if (m) value = m[1];
-      }
-      return sh.call(this, key, value);
-    }
-    next();
-  });
-};
--- a/.travis.yml
+++ b/.travis.yml
@ -2,6 +2,3 @@ language: node_js
 cache: npm
 script: npm run build
 after_success: npm run sizereport
-os:
-  - linux
-  - windows
--- a/README.md
+++ b/README.md
@ -10,7 +10,6 @@ Google Analytics is used to record the following:
 * [Basic visit data](https://support.google.com/analytics/answer/6004245?ref_topic=2919631).
 * Before and after image size once an image is downloaded. These values are rounded to the nearest
  kilobyte.
-* If install is available, when Squoosh is installed, and what method was used to install Squoosh.

 Image compression is handled locally; no additional data is sent to the server.

--- a/codecs/build-cpp.sh
+++ b/codecs/build-cpp.sh
@ -1,3 +0,0 @@
-#!/bin/sh -e
-docker build -t squoosh-cpp - < ../cpp.Dockerfile
-docker run --rm -v $PWD:/src squoosh-cpp
--- a/codecs/build-rust.sh
+++ b/codecs/build-rust.sh
@ -1,4 +0,0 @@
-set -e
-
-docker build -t squoosh-rust - < ../rust.Dockerfile
-docker run --rm -v $PWD:/src squoosh-rust "$@"
--- a/codecs/cpp.Dockerfile
+++ b/codecs/cpp.Dockerfile
@ -1,9 +0,0 @@
-FROM emscripten/emsdk:1.39.19
-RUN apt-get update && apt-get install -qqy autoconf libtool pkg-config
-ENV CFLAGS "-Os -flto"
-ENV CXXFLAGS "${CFLAGS} -std=c++17"
-ENV LDFLAGS "${CFLAGS}"
-# Build and cache standard libraries with these flags
-RUN emcc ${CXXFLAGS} --bind -xc++ /dev/null -o /dev/null
-WORKDIR /src
-CMD ["sh", "-c", "emmake make -j`nproc`"]
--- a/codecs/hqx/.gitignore
+++ b/codecs/hqx/.gitignore
@ -1 +1,5 @@
-/target
+**/*.rs.bk
+target
+Cargo.lock
+bin/
+pkg/README.md
--- a/codecs/hqx/Cargo.lock
+++ b/codecs/hqx/Cargo.lock
@ -1,289 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-[[package]]
-name = "bumpalo"
-version = "3.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
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-version = "0.1.10"
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-
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-version = "0.1.6"
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- "wasm-bindgen 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "futures"
-version = "0.1.29"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "hqx"
-version = "0.1.0"
-source = "git+https://github.com/CryZe/wasmboy-rs?tag=v0.1.2#5f19cda24191ccc7c0c4920b6b246b4e242f377c"
-dependencies = [
- "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
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-
-[[package]]
-name = "js-sys"
-version = "0.3.42"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
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-
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-
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--- a/codecs/hqx/Dockerfile
+++ b/codecs/hqx/Dockerfile
@ -1,11 +1,12 @@
-# This is intentionally an old version of Rust. Newer versions
-# generate _significantly_ bigger Wasm binaries.
-FROM rust:1.37
+FROM rust
 RUN rustup target add wasm32-unknown-unknown
 RUN curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh

 RUN mkdir /opt/binaryen && \
 curl -L https://github.com/WebAssembly/binaryen/releases/download/1.38.32/binaryen-1.38.32-x86-linux.tar.gz  | tar -xzf - -C /opt/binaryen --strip 1

-ENV PATH="/opt/binaryen:${PATH}"
+RUN mkdir /opt/wabt && \
+ curl -L https://github.com/WebAssembly/wabt/releases/download/1.0.11/wabt-1.0.11-linux.tar.gz  | tar -xzf - -C /opt/wabt --strip 1
+
+ENV PATH="/opt/binaryen:/opt/wabt:${PATH}"
 WORKDIR /src
--- a/codecs/hqx/build.sh
+++ b/codecs/hqx/build.sh
@ -6,7 +6,11 @@ echo "============================================="
 echo "Compiling wasm"
 echo "============================================="
 (
-  wasm-pack build -- --verbose --locked
+  wasm-pack build
+  wasm-strip pkg/squooshhqx_bg.wasm
+  echo "Optimising Wasm so it doesn't break Chrome (this takes like 10-15mins. get a cup of tea)"
+  echo "Once https://crbug.com/974804 is fixed, we can remove this step"
+  wasm-opt -Os --no-validation -o pkg/squooshhqx_bg.wasm pkg/squooshhqx_bg.wasm
  rm pkg/.gitignore
 )
 echo "============================================="
--- a/codecs/hqx/package.json
+++ b/codecs/hqx/package.json
@ -1,7 +1,7 @@
 {
  "name": "hqx",
  "scripts": {
-    "build:image": "docker build -t squoosh-hqx - < Dockerfile",
+    "build:image": "docker build -t squoosh-hqx .",
    "build": "docker run --rm -v $(pwd):/src squoosh-hqx ./build.sh"
  }
 }
--- a/codecs/hqx/pkg/package.json
+++ b/codecs/hqx/pkg/package.json
@ -11,5 +11,5 @@
  ],
  "module": "squooshhqx.js",
  "types": "squooshhqx.d.ts",
-  "sideEffects": false
+  "sideEffects": "false"
 }
--- a/codecs/hqx/pkg/squooshhqx.d.ts
+++ b/codecs/hqx/pkg/squooshhqx.d.ts
@ -1,10 +1,9 @@
 /* tslint:disable */
-/* eslint-disable */
 /**
-* @param {Uint32Array} input_image
-* @param {number} input_width
-* @param {number} input_height
-* @param {number} factor
-* @returns {Uint32Array}
+* @param {Uint32Array} input_image 
+* @param {number} input_width 
+* @param {number} input_height 
+* @param {number} factor 
+* @returns {Uint32Array} 
 */
 export function resize(input_image: Uint32Array, input_width: number, input_height: number, factor: number): Uint32Array;
--- a/codecs/hqx/pkg/squooshhqx.js
+++ b/codecs/hqx/pkg/squooshhqx.js
@ -1,2 +1,46 @@
-import * as wasm from "./squooshhqx_bg.wasm";
-export * from "./squooshhqx_bg.js";
+import * as wasm from './squooshhqx_bg.wasm';
+
+let cachegetUint32Memory = null;
+function getUint32Memory() {
+    if (cachegetUint32Memory === null || cachegetUint32Memory.buffer !== wasm.memory.buffer) {
+        cachegetUint32Memory = new Uint32Array(wasm.memory.buffer);
+    }
+    return cachegetUint32Memory;
+}
+
+let WASM_VECTOR_LEN = 0;
+
+function passArray32ToWasm(arg) {
+    const ptr = wasm.__wbindgen_malloc(arg.length * 4);
+    getUint32Memory().set(arg, ptr / 4);
+    WASM_VECTOR_LEN = arg.length;
+    return ptr;
+}
+
+let cachegetInt32Memory = null;
+function getInt32Memory() {
+    if (cachegetInt32Memory === null || cachegetInt32Memory.buffer !== wasm.memory.buffer) {
+        cachegetInt32Memory = new Int32Array(wasm.memory.buffer);
+    }
+    return cachegetInt32Memory;
+}
+
+function getArrayU32FromWasm(ptr, len) {
+    return getUint32Memory().subarray(ptr / 4, ptr / 4 + len);
+}
+/**
+* @param {Uint32Array} input_image
+* @param {number} input_width
+* @param {number} input_height
+* @param {number} factor
+* @returns {Uint32Array}
+*/
+export function resize(input_image, input_width, input_height, factor) {
+    const retptr = 8;
+    const ret = wasm.resize(retptr, passArray32ToWasm(input_image), WASM_VECTOR_LEN, input_width, input_height, factor);
+    const memi32 = getInt32Memory();
+    const v0 = getArrayU32FromWasm(memi32[retptr / 4 + 0], memi32[retptr / 4 + 1]).slice();
+    wasm.__wbindgen_free(memi32[retptr / 4 + 0], memi32[retptr / 4 + 1] * 4);
+    return v0;
+}
+
--- a/codecs/hqx/pkg/squooshhqx_bg.d.ts
+++ b/codecs/hqx/pkg/squooshhqx_bg.d.ts
@ -1,6 +1,5 @@
 /* tslint:disable */
-/* eslint-disable */
 export const memory: WebAssembly.Memory;
-export function resize(a: number, b: number, c: number, d: number, e: number, f: number): void;
 export function __wbindgen_malloc(a: number): number;
 export function __wbindgen_free(a: number, b: number): void;
+export function resize(a: number, b: number, c: number, d: number, e: number, f: number): void;
--- a/codecs/hqx/pkg/squooshhqx_bg.js
+++ b/codecs/hqx/pkg/squooshhqx_bg.js
@ -1,48 +0,0 @@
-import * as wasm from './squooshhqx_bg.wasm';
-
-let cachegetUint32Memory0 = null;
-function getUint32Memory0() {
-    if (cachegetUint32Memory0 === null || cachegetUint32Memory0.buffer !== wasm.memory.buffer) {
-        cachegetUint32Memory0 = new Uint32Array(wasm.memory.buffer);
-    }
-    return cachegetUint32Memory0;
-}
-
-let WASM_VECTOR_LEN = 0;
-
-function passArray32ToWasm0(arg, malloc) {
-    const ptr = malloc(arg.length * 4);
-    getUint32Memory0().set(arg, ptr / 4);
-    WASM_VECTOR_LEN = arg.length;
-    return ptr;
-}
-
-let cachegetInt32Memory0 = null;
-function getInt32Memory0() {
-    if (cachegetInt32Memory0 === null || cachegetInt32Memory0.buffer !== wasm.memory.buffer) {
-        cachegetInt32Memory0 = new Int32Array(wasm.memory.buffer);
-    }
-    return cachegetInt32Memory0;
-}
-
-function getArrayU32FromWasm0(ptr, len) {
-    return getUint32Memory0().subarray(ptr / 4, ptr / 4 + len);
-}
-/**
-* @param {Uint32Array} input_image
-* @param {number} input_width
-* @param {number} input_height
-* @param {number} factor
-* @returns {Uint32Array}
-*/
-export function resize(input_image, input_width, input_height, factor) {
-    var ptr0 = passArray32ToWasm0(input_image, wasm.__wbindgen_malloc);
-    var len0 = WASM_VECTOR_LEN;
-    wasm.resize(8, ptr0, len0, input_width, input_height, factor);
-    var r0 = getInt32Memory0()[8 / 4 + 0];
-    var r1 = getInt32Memory0()[8 / 4 + 1];
-    var v1 = getArrayU32FromWasm0(r0, r1).slice();
-    wasm.__wbindgen_free(r0, r1 * 4);
-    return v1;
-}
-
--- a/codecs/hqx/pkg/squooshhqx_bg.wasm
+++ b/codecs/hqx/pkg/squooshhqx_bg.wasm
--- a/codecs/imagequant/Makefile
+++ b/codecs/imagequant/Makefile
@ -1,40 +0,0 @@
-CODEC_URL := https://github.com/ImageOptim/libimagequant/archive/2.12.1.tar.gz
-CODEC_DIR := node_modules/libimagequant
-CODEC_OUT_RELATIVE := libimagequant.a
-CODEC_OUT := $(addprefix $(CODEC_DIR)/, $(CODEC_OUT_RELATIVE))
-OUT_JS := imagequant.js
-OUT_WASM := $(OUT_JS:.js=.wasm)
-
-.PHONY: all clean
-
-all: $(OUT_JS)
-
-%.js: %.cpp $(CODEC_OUT)
-	$(CXX) \
-		-I $(CODEC_DIR) \
-		${CXXFLAGS} \
-		${LDFLAGS} \
-		--bind \
-		--closure 1 \
-		-s ALLOW_MEMORY_GROWTH=1 \
-		-s MODULARIZE=1 \
-		-s 'EXPORT_NAME="$(basename $(@F))"' \
-		-o $@ \
-		$+
-
-$(CODEC_OUT): $(CODEC_DIR)/config.mk
-	$(MAKE) -C $(CODEC_DIR) $(CODEC_OUT_RELATIVE)
-
-$(CODEC_DIR)/config.mk: $(CODEC_DIR)/configure
-	cd $(CODEC_DIR) && ./configure \
-		--disable-sse
-
-$(CODEC_DIR)/configure: $(CODEC_DIR)
-
-$(CODEC_DIR):
-	mkdir -p $@
-	curl -sL $(CODEC_URL) | tar xz --strip 1 -C $@
-
-clean:
-	$(RM) $(OUT_JS) $(OUT_WASM)
-	$(MAKE) -C $(CODEC_DIR) clean
--- a/codecs/imagequant/README.md
+++ b/codecs/imagequant/README.md
@ -24,3 +24,7 @@ Quantizes the given images, using at most `numColors`, a value between 2 and 256
 ### `RawImage zx_quantize(std::string buffer, int image_width, int image_height, float dithering)`

 ???
+
+### `void free_result()`
+
+Frees the result created by `quantize()`.
--- a/codecs/imagequant/build.sh
+++ b/codecs/imagequant/build.sh
@ -0,0 +1,43 @@
+#!/bin/bash
+
+set -e
+
+export OPTIMIZE="-Os"
+export LDFLAGS="${OPTIMIZE}"
+export CFLAGS="${OPTIMIZE}"
+export CPPFLAGS="${OPTIMIZE}"
+
+echo "============================================="
+echo "Compiling libimagequant"
+echo "============================================="
+(
+  cd node_modules/libimagequant
+  emconfigure ./configure --disable-sse
+  emmake make static -j`nproc`
+)
+echo "============================================="
+echo "Compiling wasm module"
+echo "============================================="
+(
+  emcc \
+    --bind \
+    ${OPTIMIZE} \
+    --closure 1 \
+    -s ALLOW_MEMORY_GROWTH=1 \
+    -s MODULARIZE=1 \
+    -s 'EXPORT_NAME="imagequant"' \
+    -I node_modules/libimagequant \
+    -o ./imagequant.js \
+    --std=c++11 \
+    -x c++ \
+    imagequant.cpp \
+    node_modules/libimagequant/libimagequant.a
+)
+echo "============================================="
+echo "Compiling wasm module done"
+echo "============================================="
+
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+echo "Did you update your docker image?"
+echo "Run \`docker pull trzeci/emscripten-upstream\`"
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
--- a/codecs/imagequant/example.html
+++ b/codecs/imagequant/example.html
@ -28,6 +28,7 @@
    // const rawImage = Module.quantize(image.data, image.width, image.height, 256, 1.0);
    const rawImage = Module.zx_quantize(image.data, image.width, image.height, 1.0);
    console.log('done');
+    Module.free_result();

    const imageData = new ImageData(new Uint8ClampedArray(rawImage.buffer), rawImage.width, rawImage.height);
    const canvas = document.createElement('canvas');
--- a/codecs/imagequant/imagequant.cpp
+++ b/codecs/imagequant/imagequant.cpp
@ -1,87 +1,95 @@
-#include <emscripten/bind.h>
-#include <emscripten/val.h>
+#include "emscripten/bind.h"
+#include "emscripten/val.h"
+#include <stdlib.h>
 #include <inttypes.h>
 #include <limits.h>
 #include <math.h>
-#include <stdlib.h>

 #include "libimagequant.h"

 using namespace emscripten;

 int version() {
-  return (((LIQ_VERSION / 10000) % 100) << 16) | (((LIQ_VERSION / 100) % 100) << 8) |
-         (((LIQ_VERSION / 1) % 100) << 0);
+  return (((LIQ_VERSION/10000) % 100) << 16) |
+         (((LIQ_VERSION/100  ) % 100) << 8) |
+         (((LIQ_VERSION/1    ) % 100) << 0);
 }

-thread_local const val Uint8ClampedArray = val::global("Uint8ClampedArray");
+class RawImage {
+public:
+  val buffer;
+  int width;
+  int height;

-#define liq_ptr(T) std::unique_ptr<T, std::integral_constant<decltype(&T##_destroy), T##_destroy>>
+  RawImage(val b, int w, int h)
+    : buffer(b), width(w), height(h) {}
+};

-using liq_attr_ptr = liq_ptr(liq_attr);
-using liq_image_ptr = liq_ptr(liq_image);
-using liq_result_ptr = liq_ptr(liq_result);

-liq_result_ptr liq_image_quantize(liq_image* image, liq_attr* attr) {
-  liq_result* res = nullptr;
-  liq_image_quantize(image, attr, &res);
-  return liq_result_ptr(res);
-}
-
-val quantize(std::string rawimage,
-             int image_width,
-             int image_height,
-             int num_colors,
-             float dithering) {
-  auto image_buffer = (const liq_color*)rawimage.c_str();
+liq_attr *attr;
+liq_image *image;
+liq_result *res;
+uint8_t* result;
+RawImage quantize(std::string rawimage, int image_width, int image_height, int num_colors, float dithering) {
+  const uint8_t* image_buffer = (uint8_t*)rawimage.c_str();
  int size = image_width * image_height;
-  liq_attr_ptr attr(liq_attr_create());
-  liq_image_ptr image(
-      liq_image_create_rgba(attr.get(), image_buffer, image_width, image_height, 0));
-  liq_set_max_colors(attr.get(), num_colors);
-  auto res = liq_image_quantize(image.get(), attr.get());
-  liq_set_dithering_level(res.get(), dithering);
-  std::vector<uint8_t> image8bit(size);
-  std::vector<liq_color> result(size);
-  liq_write_remapped_image(res.get(), image.get(), image8bit.data(), image8bit.size());
-  auto pal = liq_get_palette(res.get());
+  attr = liq_attr_create();
+  image = liq_image_create_rgba(attr, image_buffer, image_width, image_height, 0);
+  liq_set_max_colors(attr, num_colors);
+  liq_image_quantize(image, attr, &res);
+  liq_set_dithering_level(res, dithering);
+  uint8_t* image8bit = (uint8_t*) malloc(size);
+  result = (uint8_t*) malloc(size * 4);
+  liq_write_remapped_image(res, image, image8bit, size);
+  const liq_palette *pal = liq_get_palette(res);
  // Turn palletted image back into an RGBA image
-  for (int i = 0; i < size; i++) {
-    result[i] = pal->entries[image8bit[i]];
+  for(int i = 0; i < size; i++) {
+    result[i * 4 + 0] = pal->entries[image8bit[i]].r;
+    result[i * 4 + 1] = pal->entries[image8bit[i]].g;
+    result[i * 4 + 2] = pal->entries[image8bit[i]].b;
+    result[i * 4 + 3] = pal->entries[image8bit[i]].a;
  }
-  return Uint8ClampedArray.new_(
-      typed_memory_view(result.size() * sizeof(liq_color), (const uint8_t*)result.data()));
+  free(image8bit);
+  liq_result_destroy(res);
+  liq_image_destroy(image);
+  liq_attr_destroy(attr);
+  return {
+    val(typed_memory_view(image_width*image_height*4, result)),
+    image_width,
+    image_height
+  };
 }

 const liq_color zx_colors[] = {
-    {.r = 0, .g = 0, .b = 0, .a = 255},        // regular black
-    {.r = 0, .g = 0, .b = 215, .a = 255},      // regular blue
-    {.r = 215, .g = 0, .b = 0, .a = 255},      // regular red
-    {.r = 215, .g = 0, .b = 215, .a = 255},    // regular magenta
-    {.r = 0, .g = 215, .b = 0, .a = 255},      // regular green
-    {.r = 0, .g = 215, .b = 215, .a = 255},    // regular cyan
-    {.r = 215, .g = 215, .b = 0, .a = 255},    // regular yellow
-    {.r = 215, .g = 215, .b = 215, .a = 255},  // regular white
-    {.r = 0, .g = 0, .b = 255, .a = 255},      // bright blue
-    {.r = 255, .g = 0, .b = 0, .a = 255},      // bright red
-    {.r = 255, .g = 0, .b = 255, .a = 255},    // bright magenta
-    {.r = 0, .g = 255, .b = 0, .a = 255},      // bright green
-    {.r = 0, .g = 255, .b = 255, .a = 255},    // bright cyan
-    {.r = 255, .g = 255, .b = 0, .a = 255},    // bright yellow
-    {.r = 255, .g = 255, .b = 255, .a = 255}   // bright white
+  {.r = 0, .g = 0, .b = 0, .a = 255},       // regular black
+  {.r = 0, .g = 0, .b = 215, .a = 255},     // regular blue
+  {.r = 215, .g = 0, .b = 0, .a = 255},     // regular red
+  {.r = 215, .g = 0, .b = 215, .a = 255},   // regular magenta
+  {.r = 0, .g = 215, .b = 0, .a = 255},     // regular green
+  {.r = 0, .g = 215, .b = 215, .a = 255},   // regular cyan
+  {.r = 215, .g = 215, .b = 0, .a = 255},   // regular yellow
+  {.r = 215, .g = 215, .b = 215, .a = 255}, // regular white
+  {.r = 0, .g = 0, .b = 255, .a = 255},     // bright blue
+  {.r = 255, .g = 0, .b = 0, .a = 255},     // bright red
+  {.r = 255, .g = 0, .b = 255, .a = 255},   // bright magenta
+  {.r = 0, .g = 255, .b = 0, .a = 255},     // bright green
+  {.r = 0, .g = 255, .b = 255, .a = 255},   // bright cyan
+  {.r = 255, .g = 255, .b = 0, .a = 255},   // bright yellow
+  {.r = 255, .g = 255, .b = 255, .a = 255}  // bright white
 };

+uint8_t block[8 * 8 * 4];
+
 /**
- * The ZX has one bit per pixel, but can assign two colours to an 8x8 block. The
- * two colours must both be 'regular' or 'bright'. Black exists as both regular
- * and bright.
+ * The ZX has one bit per pixel, but can assign two colours to an 8x8 block. The two colours must
+ * both be 'regular' or 'bright'. Black exists as both regular and bright.
 */
-val zx_quantize(std::string rawimage, int image_width, int image_height, float dithering) {
-  auto image_buffer = (const liq_color*)rawimage.c_str();
+RawImage zx_quantize(std::string rawimage, int image_width, int image_height, float dithering) {
+  const uint8_t* image_buffer = (uint8_t*) rawimage.c_str();
  int size = image_width * image_height;
-  liq_color block[8 * 8];
-  uint8_t image8bit[8 * 8];
-  std::vector<liq_color> result(size);
+  int bytes_per_pixel = 4;
+  result = (uint8_t*) malloc(size * bytes_per_pixel);
+  uint8_t* image8bit = (uint8_t*) malloc(8 * 8);

  // For each 8x8 grid
  for (int block_start_y = 0; block_start_y < image_height; block_start_y += 8) {
@ -91,8 +99,7 @@ val zx_quantize(std::string rawimage, int image_width, int image_height, float d
      int block_width = 8;
      int block_height = 8;

-      // If the block hangs off the right/bottom of the image dimensions, make
-      // it smaller to fit.
+      // If the block hangs off the right/bottom of the image dimensions, make it smaller to fit.
      if (block_start_y + block_height > image_height) {
        block_height = image_height - block_start_y;
      }
@ -104,22 +111,26 @@ val zx_quantize(std::string rawimage, int image_width, int image_height, float d
      // For each pixel in that block:
      for (int y = block_start_y; y < block_start_y + block_height; y++) {
        for (int x = block_start_x; x < block_start_x + block_width; x++) {
-          int pixel_start = (y * image_width) + x;
+          int pixel_start = (y * image_width * bytes_per_pixel) + (x * bytes_per_pixel);
          int smallest_distance = INT_MAX;
          int winning_index = -1;

          // Copy pixel data for quantizing later
          block[block_index++] = image_buffer[pixel_start];
+          block[block_index++] = image_buffer[pixel_start + 1];
+          block[block_index++] = image_buffer[pixel_start + 2];
+          block[block_index++] = image_buffer[pixel_start + 3];

          // Which zx color is this pixel closest to?
          for (int color_index = 0; color_index < 15; color_index++) {
            liq_color color = zx_colors[color_index];
-            liq_color pixel = image_buffer[pixel_start];

-            // Using Euclidean distance. LibQuant has better methods, but it
-            // requires conversion to LAB, so I don't think it's worth it.
+            // Using Euclidean distance. LibQuant has better methods, but it requires conversion to
+            // LAB, so I don't think it's worth it.
            int distance =
-                pow(color.r - pixel.r, 2) + pow(color.g - pixel.g, 2) + pow(color.b - pixel.b, 2);
+              pow(color.r - image_buffer[pixel_start + 0], 2) +
+              pow(color.g - image_buffer[pixel_start + 1], 2) +
+              pow(color.b - image_buffer[pixel_start + 2], 2);

            if (distance < smallest_distance) {
              winning_index = color_index;
@ -140,8 +151,7 @@ val zx_quantize(std::string rawimage, int image_width, int image_height, float d

      for (int color_index = 0; color_index < 15; color_index++) {
        if (color_popularity[color_index] > highest_popularity) {
-          // Store this as the most popular pixel, and demote the current
-          // values:
+          // Store this as the most popular pixel, and demote the current values:
          third_color_index = second_color_index;
          third_highest_popularity = second_highest_popularity;
          second_color_index = first_color_index;
@ -159,8 +169,8 @@ val zx_quantize(std::string rawimage, int image_width, int image_height, float d
        }
      }

-      // ZX images can't mix bright and regular colours, except black which
-      // appears in both. Resolve any conflict:
+      // ZX images can't mix bright and regular colours, except black which appears in both.
+      // Resolve any conflict:
      while (1) {
        // If either colour is black, there's no conflict to resolve.
        if (first_color_index != 0 && second_color_index != 0) {
@ -173,44 +183,63 @@ val zx_quantize(std::string rawimage, int image_width, int image_height, float d
          }
        }

-        // If, during conflict resolving, we now have two of the same colour
-        // (because we initially selected the bright & regular version of the
-        // same colour), retry again with the third most popular colour.
+        // If, during conflict resolving, we now have two of the same colour (because we initially
+        // selected the bright & regular version of the same colour), retry again with the third
+        // most popular colour.
        if (first_color_index == second_color_index) {
          second_color_index = third_color_index;
-        } else
-          break;
+        } else break;
      }

      // Quantize
-      liq_attr_ptr attr(liq_attr_create());
-      liq_image_ptr image(liq_image_create_rgba(attr.get(), block, block_width, block_height, 0));
-      liq_set_max_colors(attr.get(), 2);
-      liq_image_add_fixed_color(image.get(), zx_colors[first_color_index]);
-      liq_image_add_fixed_color(image.get(), zx_colors[second_color_index]);
-      auto res = liq_image_quantize(image.get(), attr.get());
-      liq_set_dithering_level(res.get(), dithering);
-      liq_write_remapped_image(res.get(), image.get(), image8bit, size);
-      auto pal = liq_get_palette(res.get());
+      attr = liq_attr_create();
+      image = liq_image_create_rgba(attr, block, block_width, block_height, 0);
+      liq_set_max_colors(attr, 2);
+      liq_image_add_fixed_color(image, zx_colors[first_color_index]);
+      liq_image_add_fixed_color(image, zx_colors[second_color_index]);
+      liq_image_quantize(image, attr, &res);
+      liq_set_dithering_level(res, dithering);
+      liq_write_remapped_image(res, image, image8bit, size);
+      const liq_palette *pal = liq_get_palette(res);

-      // Turn palletted image back into an RGBA image, and write it into the
-      // full size result image.
-      for (int y = 0; y < block_height; y++) {
-        for (int x = 0; x < block_width; x++) {
+      // Turn palletted image back into an RGBA image, and write it into the full size result image.
+      for(int y = 0; y < block_height; y++) {
+        for(int x = 0; x < block_width; x++) {
          int image8BitPos = y * block_width + x;
-          int resultStartPos = ((block_start_y + y) * image_width) + (block_start_x + x);
-          result[resultStartPos] = pal->entries[image8bit[image8BitPos]];
+          int resultStartPos = ((block_start_y + y) * bytes_per_pixel * image_width) + ((block_start_x + x) * bytes_per_pixel);
+          result[resultStartPos + 0] = pal->entries[image8bit[image8BitPos]].r;
+          result[resultStartPos + 1] = pal->entries[image8bit[image8BitPos]].g;
+          result[resultStartPos + 2] = pal->entries[image8bit[image8BitPos]].b;
+          result[resultStartPos + 3] = pal->entries[image8bit[image8BitPos]].a;
        }
      }
+
+      liq_result_destroy(res);
+      liq_image_destroy(image);
+      liq_attr_destroy(attr);
    }
  }

-  return Uint8ClampedArray.new_(
-      typed_memory_view(result.size() * sizeof(liq_color), (const uint8_t*)result.data()));
+  free(image8bit);
+  return {
+    val(typed_memory_view(image_width*image_height*4, result)),
+    image_width,
+    image_height
+  };
+}
+
+void free_result() {
+  free(result);
 }

 EMSCRIPTEN_BINDINGS(my_module) {
+  class_<RawImage>("RawImage")
+    .property("buffer", &RawImage::buffer)
+    .property("width", &RawImage::width)
+    .property("height", &RawImage::height);
+
  function("quantize", &quantize);
  function("zx_quantize", &zx_quantize);
  function("version", &version);
+  function("free_result", &free_result);
 }
--- a/codecs/imagequant/imagequant.d.ts
+++ b/codecs/imagequant/imagequant.d.ts
@ -1,6 +1,15 @@
+interface RawImage {
+  buffer: Uint8Array;
+  width: number;
+  height: number;
+}
+
 interface QuantizerModule extends EmscriptenWasm.Module {
-  quantize(data: BufferSource, width: number, height: number, numColors: number, dither: number): Uint8ClampedArray;
-  zx_quantize(data: BufferSource, width: number, height: number, dither: number): Uint8ClampedArray;
+  quantize(data: BufferSource, width: number, height: number, numColors: number, dither: number): RawImage;
+  zx_quantize(data: BufferSource, width: number, height: number, dither: number): RawImage;
+  free_result(): void;
 }

 export default function(opts: EmscriptenWasm.ModuleOpts): QuantizerModule;
+
+
--- a/codecs/imagequant/imagequant.js
+++ b/codecs/imagequant/imagequant.js
@ -6,56 +6,69 @@ var imagequant = (function() {
 function(imagequant) {
  imagequant = imagequant || {};

-
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+else for(p=v?1:2;p<k.length;++p)q=1===p?"thisWired":"arg"+(p-2)+"Wired",null!==k[p].$&&(l+=q+"_dtor("+q+"); // "+k[p].name+"\n",x.push(q+"_dtor"),m.push(k[p].$));w&&(l+="var ret = retType.fromWireType(rv);\nreturn ret;\n");x.push(l+"}\n");k=Eb(x).apply(null,m);ub(h,k,b-1);return[]})},b:function(a,b,c,d,f){function g(l){return l}b=P(b);-1===f&&(f=4294967295);var n=Na(c);if(0===d){var h=32-8*c;g=function(l){return l<<h>>>h}}var k=-1!=b.indexOf("unsigned");T(a,{name:b,fromWireType:g,toWireType:function(l,
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+Float32Array,Float64Array][b];c=P(c);T(a,{name:c,fromWireType:d,argPackAdvance:8,readValueFromPointer:d},{ua:!0})},i:function(a,b){b=P(b);var c="std::string"===b;T(a,{name:b,fromWireType:function(d){var f=L[d>>2];if(c){var g=H[d+4+f],n=0;0!=g&&(n=g,H[d+4+f]=0);var h=d+4;for(g=0;g<=f;++g){var k=d+4+g;if(0==H[k]){h=h?ma(H,h,void 0):"";if(void 0===l)var l=h;else l+=String.fromCharCode(0),l+=h;h=k+1}}0!=n&&(H[d+4+f]=n)}else{l=Array(f);for(g=0;g<f;++g)l[g]=String.fromCharCode(H[d+4+g]);l=l.join("")}Y(d);
+return l},toWireType:function(d,f){f instanceof ArrayBuffer&&(f=new Uint8Array(f));var g="string"===typeof f;g||f instanceof Uint8Array||f instanceof Uint8ClampedArray||f instanceof Int8Array||S("Cannot pass non-string to std::string");var n=(c&&g?function(){for(var l=0,m=0;m<f.length;++m){var q=f.charCodeAt(m);55296<=q&&57343>=q&&(q=65536+((q&1023)<<10)|f.charCodeAt(++m)&1023);127>=q?++l:l=2047>=q?l+2:65535>=q?l+3:l+4}return l}:function(){return f.length})(),h=Kb(4+n+1);L[h>>2]=n;if(c&&g)na(f,h+
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+toWireType:function(){}})},j:Cb,n:function(a){4<a&&(Z[a].ka+=1)},k:function(a,b){var c=R[a];void 0===c&&S("_emval_take_value has unknown type "+wb(a));a=c.readValueFromPointer(b);return mb(a)},g:function(){C()},r:function(a,b,c){H.copyWithin(a,b,b+c)},s:function(a){var b=H.length;if(2147418112<a)return!1;for(var c=1;4>=c;c*=2){var d=b*(1+.2/c);d=Math.min(d,a+100663296);d=Math.max(16777216,a,d);0<d%65536&&(d+=65536-d%65536);a:{try{G.grow(Math.min(2147418112,d)-K.byteLength+65535>>16);za(G.buffer);
+var f=1;break a}catch(g){}f=void 0}if(f)return!0}return!1},m:function(){return 0},o:function(){},f:function(a,b,c,d){for(var f=0,g=0;g<c;g++){for(var n=J[b+8*g>>2],h=J[b+(8*g+4)>>2],k=0;k<h;k++){var l=H[n+k],m=Hb[a];0===l||10===l?((1===a?ia:E)(ma(m,0)),m.length=0):m.push(l)}f+=h}J[d>>2]=f;return 0},memory:G,q:function(){},table:ja},Mb=function(){function a(f){e.asm=f.exports;M--;e.monitorRunDependencies&&e.monitorRunDependencies(M);0==M&&(null!==Ha&&(clearInterval(Ha),Ha=null),N&&(f=N,N=null,f()))}
+function b(f){a(f.instance)}function c(f){return La().then(function(g){return WebAssembly.instantiate(g,d)}).then(f,function(g){E("failed to asynchronously prepare wasm: "+g);C(g)})}var d={a:Lb};M++;e.monitorRunDependencies&&e.monitorRunDependencies(M);if(e.instantiateWasm)try{return e.instantiateWasm(d,a)}catch(f){return E("Module.instantiateWasm callback failed with error: "+f),!1}(function(){if(F||"function"!==typeof WebAssembly.instantiateStreaming||Ia()||"function"!==typeof fetch)return c(b);
+fetch(O,{credentials:"same-origin"}).then(function(f){return WebAssembly.instantiateStreaming(f,d).then(b,function(g){E("wasm streaming compile failed: "+g);E("falling back to ArrayBuffer instantiation");c(b)})})})();return{}}();e.asm=Mb;
+var Ma=e.___wasm_call_ctors=function(){return(Ma=e.___wasm_call_ctors=e.asm.v).apply(null,arguments)},Kb=e._malloc=function(){return(Kb=e._malloc=e.asm.w).apply(null,arguments)},Y=e._free=function(){return(Y=e._free=e.asm.x).apply(null,arguments)},xb=e.___getTypeName=function(){return(xb=e.___getTypeName=e.asm.y).apply(null,arguments)};e.___embind_register_native_and_builtin_types=function(){return(e.___embind_register_native_and_builtin_types=e.asm.z).apply(null,arguments)};
+e.dynCall_ii=function(){return(e.dynCall_ii=e.asm.A).apply(null,arguments)};e.dynCall_vi=function(){return(e.dynCall_vi=e.asm.B).apply(null,arguments)};e.dynCall_iii=function(){return(e.dynCall_iii=e.asm.C).apply(null,arguments)};e.dynCall_viii=function(){return(e.dynCall_viii=e.asm.D).apply(null,arguments)};e.dynCall_viiiiif=function(){return(e.dynCall_viiiiif=e.asm.E).apply(null,arguments)};e.dynCall_viiiif=function(){return(e.dynCall_viiiif=e.asm.F).apply(null,arguments)};
+e.dynCall_i=function(){return(e.dynCall_i=e.asm.G).apply(null,arguments)};e.dynCall_v=function(){return(e.dynCall_v=e.asm.H).apply(null,arguments)};e.dynCall_iiiiiif=function(){return(e.dynCall_iiiiiif=e.asm.I).apply(null,arguments)};e.dynCall_iiiiif=function(){return(e.dynCall_iiiiif=e.asm.J).apply(null,arguments)};e.dynCall_vif=function(){return(e.dynCall_vif=e.asm.K).apply(null,arguments)};e.dynCall_iiii=function(){return(e.dynCall_iiii=e.asm.L).apply(null,arguments)};
+e.dynCall_jiji=function(){return(e.dynCall_jiji=e.asm.M).apply(null,arguments)};e.dynCall_iidiiii=function(){return(e.dynCall_iidiiii=e.asm.N).apply(null,arguments)};e.dynCall_vii=function(){return(e.dynCall_vii=e.asm.O).apply(null,arguments)};e.dynCall_viiiiii=function(){return(e.dynCall_viiiiii=e.asm.P).apply(null,arguments)};e.dynCall_viiiii=function(){return(e.dynCall_viiiii=e.asm.Q).apply(null,arguments)};e.dynCall_viiii=function(){return(e.dynCall_viiii=e.asm.R).apply(null,arguments)};
+e.asm=Mb;var Nb;e.then=function(a){if(Nb)a(e);else{var b=e.onRuntimeInitialized;e.onRuntimeInitialized=function(){b&&b();a(e)}}return e};N=function Ob(){Nb||Pb();Nb||(N=Ob)};
+function Pb(){function a(){if(!Nb&&(Nb=!0,e.calledRun=!0,!ka)){Ba(Da);Ba(Ea);if(e.onRuntimeInitialized)e.onRuntimeInitialized();if(e.postRun)for("function"==typeof e.postRun&&(e.postRun=[e.postRun]);e.postRun.length;){var b=e.postRun.shift();Fa.unshift(b)}Ba(Fa)}}if(!(0<M)){if(e.preRun)for("function"==typeof e.preRun&&(e.preRun=[e.preRun]);e.preRun.length;)Ga();Ba(Ca);0<M||(e.setStatus?(e.setStatus("Running..."),setTimeout(function(){setTimeout(function(){e.setStatus("")},1);a()},1)):a())}}
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-  return imagequant.ready
+  return imagequant
 }
 );
 })();
--- a/codecs/imagequant/imagequant.wasm
+++ b/codecs/imagequant/imagequant.wasm
--- a/codecs/imagequant/package-lock.json
+++ b/codecs/imagequant/package-lock.json
--- a/codecs/imagequant/package.json
+++ b/codecs/imagequant/package.json
@ -1,6 +1,13 @@
 {
  "name": "imagequant",
  "scripts": {
-    "build": "../build-cpp.sh"
+    "install": "napa",
+    "build": "docker run --rm -v $(pwd):/src trzeci/emscripten-upstream ./build.sh"
+  },
+  "napa": {
+    "libimagequant": "ImageOptim/libimagequant#2.12.1"
+  },
+  "devDependencies": {
+    "napa": "3.0.0"
  }
 }
--- a/codecs/mozjpeg_enc/Makefile
+++ b/codecs/mozjpeg_enc/Makefile
@ -1,52 +0,0 @@
-CODEC_URL := https://github.com/mozilla/mozjpeg/archive/v3.3.1.tar.gz
-CODEC_DIR := node_modules/mozjpeg
-CODEC_OUT_RELATIVE := .libs/libjpeg.a rdswitch.o
-CODEC_OUT := $(addprefix $(CODEC_DIR)/, $(CODEC_OUT_RELATIVE))
-OUT_JS := mozjpeg_enc.js
-OUT_WASM := $(OUT_JS:.js=.wasm)
-
-.PHONY: all clean
-
-all: $(OUT_JS)
-
-%.js: %.cpp $(CODEC_OUT)
-	$(CXX) \
-		-I $(CODEC_DIR) \
-		${CXXFLAGS} \
-		${LDFLAGS} \
-		--bind \
-		--closure 1 \
-		-s ALLOW_MEMORY_GROWTH=1 \
-		-s MODULARIZE=1 \
-		-s 'EXPORT_NAME="$(basename $(@F))"' \
-		-o $@ \
-		$+
-
-# This one is a bit special: there is no rule for .libs/libjpeg.a
-#  so we use libjpeg.la which implicitly builds that one instead.
-$(CODEC_DIR)/.libs/libjpeg.a: $(CODEC_DIR)/Makefile
-	$(MAKE) -C $(CODEC_DIR) libjpeg.la
-
-$(CODEC_DIR)/rdswitch.o: $(CODEC_DIR)/Makefile
-	$(MAKE) -C $(CODEC_DIR) rdswitch.o
-
-$(CODEC_DIR)/Makefile: $(CODEC_DIR)/configure
-	cd $(CODEC_DIR) && ./configure \
-		--disable-shared \
-		--without-turbojpeg \
-		--without-simd \
-		--without-arith-enc \
-		--without-arith-dec
-
-$(CODEC_DIR)/configure: $(CODEC_DIR)/configure.ac
-	cd $(CODEC_DIR) && autoreconf -iv
-
-$(CODEC_DIR)/configure.ac: $(CODEC_DIR)
-
-$(CODEC_DIR):
-	mkdir -p $@
-	curl -sL $(CODEC_URL) | tar xz --strip 1 -C $@
-
-clean:
-	$(RM) $(OUT_JS) $(OUT_WASM)
-	$(MAKE) -C $(CODEC_DIR) clean
--- a/codecs/mozjpeg_enc/README.md
+++ b/codecs/mozjpeg_enc/README.md
@ -17,6 +17,10 @@ See `example.html`

 Returns the version of MozJPEG as a number. va.b.c is encoded as 0x0a0b0c

+### `void free_result()`
+
+Frees the result created by `encode()`.
+
 ### `Uint8Array encode(std::string image_in, int image_width, int image_height, MozJpegOptions opts)`

 Encodes the given image with given dimension to JPEG. Options looks like this:
--- a/codecs/mozjpeg_enc/build.sh
+++ b/codecs/mozjpeg_enc/build.sh
@ -0,0 +1,54 @@
+#!/bin/bash
+
+set -e
+
+export OPTIMIZE="-Os"
+export LDFLAGS="${OPTIMIZE}"
+export CFLAGS="${OPTIMIZE}"
+export CPPFLAGS="${OPTIMIZE}"
+
+apt-get update
+apt-get install -qqy autoconf libtool libpng-dev pkg-config
+
+echo "============================================="
+echo "Compiling mozjpeg"
+echo "============================================="
+(
+  cd node_modules/mozjpeg
+  autoreconf -fiv
+  emconfigure ./configure --without-simd
+  emmake make libjpeg.la -j`nproc`
+)
+echo "============================================="
+echo "Compiling mozjpeg done"
+echo "============================================="
+
+echo "============================================="
+echo "Compiling wasm bindings"
+echo "============================================="
+(
+  emcc \
+    --bind \
+    ${OPTIMIZE} \
+    --closure 1 \
+    -s WASM=1 \
+    -s ALLOW_MEMORY_GROWTH=1 \
+    -s MODULARIZE=1 \
+    -s 'EXPORT_NAME="mozjpeg_enc"' \
+    -I node_modules/mozjpeg \
+    -o ./mozjpeg_enc.js \
+    -Wno-deprecated-register \
+    -Wno-writable-strings \
+    node_modules/mozjpeg/rdswitch.c \
+    -x c++ -std=c++11 \
+    mozjpeg_enc.cpp \
+    node_modules/mozjpeg/.libs/libjpeg.a
+)
+echo "============================================="
+echo "Compiling wasm bindings done"
+echo "============================================="
+
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+echo "Did you update your docker image?"
+echo "Run \`docker pull trzeci/emscripten-upstream\`"
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
--- a/codecs/mozjpeg_enc/mozjpeg_enc.cpp
+++ b/codecs/mozjpeg_enc/mozjpeg_enc.cpp
@ -1,22 +1,18 @@
 #include <emscripten/bind.h>
 #include <emscripten/val.h>
-#include <inttypes.h>
-#include <setjmp.h>
-#include <stdio.h>
 #include <stdlib.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <setjmp.h>
 #include <string.h>
 #include "config.h"
 #include "jpeglib.h"
-
-extern "C" {
 #include "cdjpeg.h"
-}

 using namespace emscripten;

-// MozJPEG doesn’t expose a numeric version, so I have to do some fun C macro
-// hackery to turn it into a string. More details here:
-// https://gcc.gnu.org/onlinedocs/cpp/Stringizing.html
+// MozJPEG doesn’t expose a numeric version, so I have to do some fun C macro hackery to turn it
+// into a string. More details here: https://gcc.gnu.org/onlinedocs/cpp/Stringizing.html
 #define xstr(s) str(s)
 #define str(s) #s

@ -43,8 +39,8 @@ int version() {
  char buffer[] = xstr(MOZJPEG_VERSION);
  int version = 0;
  int last_index = 0;
-  for (int i = 0; i < strlen(buffer); i++) {
-    if (buffer[i] == '.') {
+  for(int i = 0; i < strlen(buffer); i++) {
+    if(buffer[i] == '.') {
      buffer[i] = '\0';
      version = version << 8 | atoi(&buffer[last_index]);
      buffer[i] = '.';
@ -55,16 +51,16 @@ int version() {
  return version;
 }

-thread_local const val Uint8Array = val::global("Uint8Array");
+uint8_t* last_result;
+struct jpeg_compress_struct cinfo;

 val encode(std::string image_in, int image_width, int image_height, MozJpegOptions opts) {
-  uint8_t* image_buffer = (uint8_t*)image_in.c_str();
+  uint8_t* image_buffer = (uint8_t*) image_in.c_str();

  // The code below is basically the `write_JPEG_file` function from
  // https://github.com/mozilla/mozjpeg/blob/master/example.c
  // I just write to memory instead of a file.

-  /* Step 1: allocate and initialize JPEG compression object */

  /* This struct contains the JPEG compression parameters and pointers to
   * working space (which is allocated as needed by the JPEG library).
@ -72,7 +68,6 @@ val encode(std::string image_in, int image_width, int image_height, MozJpegOptio
   * compression/decompression processes, in existence at once.  We refer
   * to any one struct (and its associated working data) as a "JPEG object".
   */
-  jpeg_compress_struct cinfo;
  /* This struct represents a JPEG error handler.  It is declared separately
   * because applications often want to supply a specialized error handler
   * (see the second half of this file for an example).  But here we just
@ -81,7 +76,15 @@ val encode(std::string image_in, int image_width, int image_height, MozJpegOptio
   * Note that this struct must live as long as the main JPEG parameter
   * struct, to avoid dangling-pointer problems.
   */
-  jpeg_error_mgr jerr;
+  struct jpeg_error_mgr jerr;
+  /* More stuff */
+  JSAMPROW row_pointer[1];      /* pointer to JSAMPLE row[s] */
+  int row_stride;               /* physical row width in image buffer */
+  uint8_t* output;
+  unsigned long size;
+
+  /* Step 1: allocate and initialize JPEG compression object */
+
  /* We have to set up the error handler first, in case the initialization
   * step fails.  (Unlikely, but it could happen if you are out of memory.)
   * This routine fills in the contents of struct jerr, and returns jerr's
@ -103,8 +106,6 @@ val encode(std::string image_in, int image_width, int image_height, MozJpegOptio
  //   fprintf(stderr, "can't open %s\n", filename);
  //   exit(1);
  // }
-  uint8_t* output = nullptr;
-  unsigned long size = 0;
  jpeg_mem_dest(&cinfo, &output, &size);

  /* Step 3: set parameters for compression */
@ -112,17 +113,17 @@ val encode(std::string image_in, int image_width, int image_height, MozJpegOptio
  /* First we supply a description of the input image.
   * Four fields of the cinfo struct must be filled in:
   */
-  cinfo.image_width = image_width; /* image width and height, in pixels */
+  cinfo.image_width = image_width;      /* image width and height, in pixels */
  cinfo.image_height = image_height;
-  cinfo.input_components = 4;          /* # of color components per pixel */
-  cinfo.in_color_space = JCS_EXT_RGBA; /* colorspace of input image */
+  cinfo.input_components = 4;           /* # of color components per pixel */
+  cinfo.in_color_space = JCS_EXT_RGBA;  /* colorspace of input image */
  /* Now use the library's routine to set default compression parameters.
   * (You must set at least cinfo.in_color_space before calling this,
   * since the defaults depend on the source color space.)
   */
  jpeg_set_defaults(&cinfo);

-  jpeg_set_colorspace(&cinfo, (J_COLOR_SPACE)opts.color_space);
+  jpeg_set_colorspace(&cinfo, (J_COLOR_SPACE) opts.color_space);

  if (opts.quant_table != -1) {
    jpeg_c_set_int_param(&cinfo, JINT_BASE_QUANT_TBL_IDX, opts.quant_table);
@ -142,17 +143,17 @@ val encode(std::string image_in, int image_width, int image_height, MozJpegOptio
  jpeg_c_set_bool_param(&cinfo, JBOOLEAN_TRELLIS_Q_OPT, opts.trellis_opt_table);
  jpeg_c_set_int_param(&cinfo, JINT_TRELLIS_NUM_LOOPS, opts.trellis_loops);

-  // A little hacky to build a string for this, but it means we can use
-  // set_quality_ratings which does some useful heuristic stuff.
+  // A little hacky to build a string for this, but it means we can use set_quality_ratings which
+  // does some useful heuristic stuff.
  std::string quality_str = std::to_string(opts.quality);

  if (opts.separate_chroma_quality && opts.color_space == JCS_YCbCr) {
    quality_str += "," + std::to_string(opts.chroma_quality);
  }

-  char const* pqual = quality_str.c_str();
+  char const *pqual = quality_str.c_str();

-  set_quality_ratings(&cinfo, (char*)pqual, opts.baseline);
+  set_quality_ratings(&cinfo, (char*) pqual, opts.baseline);

  if (!opts.auto_subsample && opts.color_space == JCS_YCbCr) {
    cinfo.comp_info[0].h_samp_factor = opts.chroma_subsample;
@ -180,54 +181,54 @@ val encode(std::string image_in, int image_width, int image_height, MozJpegOptio
   * To keep things simple, we pass one scanline per call; you can pass
   * more if you wish, though.
   */
-  int row_stride = image_width * 4; /* JSAMPLEs per row in image_buffer */
+  row_stride = image_width * 4; /* JSAMPLEs per row in image_buffer */

  while (cinfo.next_scanline < cinfo.image_height) {
    /* jpeg_write_scanlines expects an array of pointers to scanlines.
     * Here the array is only one element long, but you could pass
     * more than one scanline at a time if that's more convenient.
     */
-
-    JSAMPROW row_pointer =
-        &image_buffer[cinfo.next_scanline * row_stride]; /* pointer to JSAMPLE row[s] */
-    (void)jpeg_write_scanlines(&cinfo, &row_pointer, 1);
+    row_pointer[0] = & image_buffer[cinfo.next_scanline * row_stride];
+    (void) jpeg_write_scanlines(&cinfo, row_pointer, 1);
  }

  /* Step 6: Finish compression */

  jpeg_finish_compress(&cinfo);
-
  /* Step 7: release JPEG compression object */

-  auto js_result = Uint8Array.new_(typed_memory_view(size, output));
-
-  /* This is an important step since it will release a good deal of memory. */
-  jpeg_destroy_compress(&cinfo);
-  free(output);
+  last_result = output;

  /* And we're done! */
-  return js_result;
+  return val(typed_memory_view(size, output));
+}
+
+void free_result() {
+  /* This is an important step since it will release a good deal of memory. */
+  jpeg_destroy_compress(&cinfo);
 }

 EMSCRIPTEN_BINDINGS(my_module) {
  value_object<MozJpegOptions>("MozJpegOptions")
-      .field("quality", &MozJpegOptions::quality)
-      .field("baseline", &MozJpegOptions::baseline)
-      .field("arithmetic", &MozJpegOptions::arithmetic)
-      .field("progressive", &MozJpegOptions::progressive)
-      .field("optimize_coding", &MozJpegOptions::optimize_coding)
-      .field("smoothing", &MozJpegOptions::smoothing)
-      .field("color_space", &MozJpegOptions::color_space)
-      .field("quant_table", &MozJpegOptions::quant_table)
-      .field("trellis_multipass", &MozJpegOptions::trellis_multipass)
-      .field("trellis_opt_zero", &MozJpegOptions::trellis_opt_zero)
-      .field("trellis_opt_table", &MozJpegOptions::trellis_opt_table)
-      .field("trellis_loops", &MozJpegOptions::trellis_loops)
-      .field("chroma_subsample", &MozJpegOptions::chroma_subsample)
-      .field("auto_subsample", &MozJpegOptions::auto_subsample)
-      .field("separate_chroma_quality", &MozJpegOptions::separate_chroma_quality)
-      .field("chroma_quality", &MozJpegOptions::chroma_quality);
+    .field("quality", &MozJpegOptions::quality)
+    .field("baseline", &MozJpegOptions::baseline)
+    .field("arithmetic", &MozJpegOptions::arithmetic)
+    .field("progressive", &MozJpegOptions::progressive)
+    .field("optimize_coding", &MozJpegOptions::optimize_coding)
+    .field("smoothing", &MozJpegOptions::smoothing)
+    .field("color_space", &MozJpegOptions::color_space)
+    .field("quant_table", &MozJpegOptions::quant_table)
+    .field("trellis_multipass", &MozJpegOptions::trellis_multipass)
+    .field("trellis_opt_zero", &MozJpegOptions::trellis_opt_zero)
+    .field("trellis_opt_table", &MozJpegOptions::trellis_opt_table)
+    .field("trellis_loops", &MozJpegOptions::trellis_loops)
+    .field("chroma_subsample", &MozJpegOptions::chroma_subsample)
+    .field("auto_subsample", &MozJpegOptions::auto_subsample)
+    .field("separate_chroma_quality", &MozJpegOptions::separate_chroma_quality)
+    .field("chroma_quality", &MozJpegOptions::chroma_quality)
+    ;

  function("version", &version);
  function("encode", &encode);
+  function("free_result", &free_result);
 }
--- a/codecs/mozjpeg_enc/mozjpeg_enc.d.ts
+++ b/codecs/mozjpeg_enc/mozjpeg_enc.d.ts
@ -2,6 +2,7 @@ import { EncodeOptions } from '../../src/codecs/mozjpeg/encoder-meta';

 interface MozJPEGModule extends EmscriptenWasm.Module {
  encode(data: BufferSource, width: number, height: number, options: EncodeOptions): Uint8Array;
+  free_result(): void;
 }

 export default function(opts: EmscriptenWasm.ModuleOpts): MozJPEGModule;
--- a/codecs/mozjpeg_enc/mozjpeg_enc.js
+++ b/codecs/mozjpeg_enc/mozjpeg_enc.js
@ -6,60 +6,58 @@ var mozjpeg_enc = (function() {
 function(mozjpeg_enc) {
  mozjpeg_enc = mozjpeg_enc || {};

-
-var d;d||(d=typeof mozjpeg_enc !== 'undefined' ? mozjpeg_enc : {});var aa;d.ready=new Promise(function(a){aa=a});var r={},t;for(t in d)d.hasOwnProperty(t)&&(r[t]=d[t]);var ba="./this.program";function u(a,b){throw b;}var v=!1,w=!1,ca=!1,da=!1;v="object"===typeof window;w="function"===typeof importScripts;ca="object"===typeof process&&"object"===typeof process.versions&&"string"===typeof process.versions.node;da=!v&&!ca&&!w;var x="",B,C,ea,fa;
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--- a/codecs/oxipng/Cargo.toml
+++ b/codecs/oxipng/Cargo.toml
@ -1,5 +1,5 @@
 [package]
-name = "squoosh-oxipng"
+name = "oxipng"
 version = "0.1.0"
 authors = ["Ingvar Stepanyan <me@rreverser.com>"]
 edition = "2018"
@ -9,10 +9,13 @@ publish = false
 crate-type = ["cdylib"]

 [dependencies]
-oxipng = { version = "3.0.0", default-features = false }
-wasm-bindgen = "0.2.64"
+oxipng = { version = "2.3.0", default-features = false }
+wasm-bindgen = "0.2.48"
 log = { version = "0.4", features = ["release_max_level_off"] }

 [profile.release]
 lto = true
 opt-level = "s"
+
+[patch.crates-io]
+oxipng = { git = "https://github.com/shssoichiro/oxipng.git", branch = "master" }
--- a/codecs/oxipng/Dockerfile
+++ b/codecs/oxipng/Dockerfile
@ -3,10 +3,10 @@ RUN rustup target add wasm32-unknown-unknown
 RUN curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh

 RUN mkdir /opt/wabt && \
-  curl -L https://github.com/WebAssembly/wabt/releases/download/1.0.17/wabt-1.0.17-ubuntu.tar.gz  | tar -xzf - -C /opt/wabt --strip 1
+ curl -L https://github.com/WebAssembly/wabt/releases/download/1.0.11/wabt-1.0.11-linux.tar.gz  | tar -xzf - -C /opt/wabt --strip 1

 RUN mkdir /opt/wasi-sdk && \
-  curl -L https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-11/wasi-sdk-11.0-linux.tar.gz | tar -xzf - -C /opt/wasi-sdk --strip 1
+  curl -L https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-8/wasi-sdk-8.0-linux.tar.gz | tar -xzf - -C /opt/wasi-sdk --strip 1

-ENV PATH="/opt/wabt/bin:/opt/wasi-sdk/bin:${PATH}"
+ENV PATH="/opt/wabt:/opt/wasi-sdk/bin:${PATH}"
 WORKDIR /src
--- a/codecs/oxipng/build.sh
+++ b/codecs/oxipng/build.sh
@ -0,0 +1,22 @@
+#!/bin/bash
+
+set -e
+
+echo "============================================="
+echo "Compiling wasm"
+echo "============================================="
+(
+  wasm-pack build
+  wasm-strip pkg/oxipng_bg.wasm
+  rm pkg/.gitignore
+)
+echo "============================================="
+echo "Compiling wasm  done"
+echo "============================================="
+
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+echo "Did you update your docker image?"
+echo "Run \`docker pull ubuntu\`"
+echo "Run \`docker pull rust\`"
+echo "Run \`docker build -t squoosh-oxipng .\`"
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
--- a/codecs/oxipng/package.json
+++ b/codecs/oxipng/package.json
@ -1,6 +1,7 @@
 {
  "name": "oxipng",
  "scripts": {
-    "build": "../build-rust.sh"
+    "build:image": "docker build -t squoosh-oxipng .",
+    "build": "docker run --rm -v $(pwd):/src squoosh-oxipng ./build.sh"
  }
 }
--- a/codecs/oxipng/pkg/squoosh_oxipng.d.ts
+++ b/codecs/oxipng/pkg/squoosh_oxipng.d.ts
@ -1,8 +1,8 @@
 /* tslint:disable */
 /* eslint-disable */
 /**
-* @param {Uint8Array} data
-* @param {number} level
-* @returns {Uint8Array}
+* @param {Uint8Array} data 
+* @param {number} level 
+* @returns {Uint8Array} 
 */
 export function optimise(data: Uint8Array, level: number): Uint8Array;
--- a/codecs/oxipng/pkg/squoosh_oxipng_bg.js
+++ b/codecs/oxipng/pkg/squoosh_oxipng_bg.js
@ -1,6 +1,6 @@
-import * as wasm from './squoosh_oxipng_bg.wasm';
+import * as wasm from './oxipng_bg.wasm';

-const lTextDecoder = typeof TextDecoder === 'undefined' ? (0, module.require)('util').TextDecoder : TextDecoder;
+const lTextDecoder = typeof TextDecoder === 'undefined' ? require('util').TextDecoder : TextDecoder;

 let cachedTextDecoder = new lTextDecoder('utf-8', { ignoreBOM: true, fatal: true });

--- a/codecs/oxipng/pkg/squoosh_oxipng_bg.d.ts
+++ b/codecs/oxipng/pkg/squoosh_oxipng_bg.d.ts
--- a/codecs/oxipng/pkg/oxipng_bg.wasm
+++ b/codecs/oxipng/pkg/oxipng_bg.wasm
--- a/codecs/oxipng/pkg/package.json
+++ b/codecs/oxipng/pkg/package.json
@ -1,15 +1,15 @@
 {
-  "name": "squoosh-oxipng",
+  "name": "oxipng",
  "collaborators": [
    "Ingvar Stepanyan <me@rreverser.com>"
  ],
  "version": "0.1.0",
  "files": [
-    "squoosh_oxipng_bg.wasm",
-    "squoosh_oxipng.js",
-    "squoosh_oxipng.d.ts"
+    "oxipng_bg.wasm",
+    "oxipng.js",
+    "oxipng.d.ts"
  ],
-  "module": "squoosh_oxipng.js",
-  "types": "squoosh_oxipng.d.ts",
+  "module": "oxipng.js",
+  "types": "oxipng.d.ts",
  "sideEffects": false
 }
--- a/codecs/oxipng/pkg/squoosh_oxipng.js
+++ b/codecs/oxipng/pkg/squoosh_oxipng.js
@ -1,2 +0,0 @@
-import * as wasm from "./squoosh_oxipng_bg.wasm";
-export * from "./squoosh_oxipng_bg.js";
--- a/codecs/oxipng/pkg/squoosh_oxipng_bg.wasm
+++ b/codecs/oxipng/pkg/squoosh_oxipng_bg.wasm
--- a/codecs/oxipng/src/lib.rs
+++ b/codecs/oxipng/src/lib.rs
@ -1,18 +1,10 @@
 mod malloc_shim;

 use wasm_bindgen::prelude::*;
-use oxipng::AlphaOptim;

 #[wasm_bindgen(catch)]
 pub fn optimise(data: &[u8], level: u8) -> Vec<u8> {
  let mut options = oxipng::Options::from_preset(level);
-  options.alphas.insert(AlphaOptim::Black);
-  options.alphas.insert(AlphaOptim::White);
-  options.alphas.insert(AlphaOptim::Up);
-  options.alphas.insert(AlphaOptim::Down);
-  options.alphas.insert(AlphaOptim::Left);
-  options.alphas.insert(AlphaOptim::Right);
-
  options.deflate = oxipng::Deflaters::Libdeflater;
  oxipng::optimize_from_memory(data, &options).unwrap_throw()
 }
--- a/codecs/package.json
+++ b/codecs/package.json
@ -1,4 +0,0 @@
-{
-  "name": "codecs",
-  "version": "0.0.0"
-}
--- a/codecs/resize/.gitignore
+++ b/codecs/resize/.gitignore
@ -1,5 +1,6 @@
 **/*.rs.bk
 target
+Cargo.lock
 bin/
 pkg/README.md
 lut.inc
--- a/codecs/resize/Cargo.lock
+++ b/codecs/resize/Cargo.lock
@ -1,284 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-[[package]]
-name = "bumpalo"
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-
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-
-[[package]]
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-
-[[package]]
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- "console_error_panic_hook",
- "resize",
- "wasm-bindgen",
- "wasm-bindgen-test",
- "wee_alloc",
-]
-
-[[package]]
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- "libc",
- "memory_units",
- "winapi",
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- "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"
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-
-[[package]]
-name = "winapi-x86_64-pc-windows-gnu"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
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--- a/codecs/resize/Cargo.toml
+++ b/codecs/resize/Cargo.toml
@ -1,8 +1,7 @@
 [package]
-name = "squoosh-resize"
+name = "resize"
 version = "0.1.0"
 authors = ["Surma <surma@surma.link>"]
-publish = false

 [lib]
 #crate-type = ["cdylib", "rlib"]
--- a/codecs/resize/Dockerfile
+++ b/codecs/resize/Dockerfile
@ -0,0 +1,9 @@
+FROM rust
+RUN rustup target add wasm32-unknown-unknown
+RUN curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
+
+RUN mkdir /opt/wabt && \
+ curl -L https://github.com/WebAssembly/wabt/releases/download/1.0.11/wabt-1.0.11-linux.tar.gz  | tar -xzf - -C /opt/wabt --strip 1
+
+ENV PATH="/opt/wabt:${PATH}"
+WORKDIR /src
--- a/codecs/resize/build.sh
+++ b/codecs/resize/build.sh
@ -0,0 +1,22 @@
+#!/bin/bash
+
+set -e
+
+echo "============================================="
+echo "Compiling wasm"
+echo "============================================="
+(
+  wasm-pack build
+  wasm-strip pkg/resize_bg.wasm
+  rm pkg/.gitignore
+)
+echo "============================================="
+echo "Compiling wasm  done"
+echo "============================================="
+
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+echo "Did you update your docker image?"
+echo "Run \`docker pull ubuntu\`"
+echo "Run \`docker pull rust\`"
+echo "Run \`docker build -t squoosh-resize .\`"
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
--- a/codecs/resize/package.json
+++ b/codecs/resize/package.json
@ -1,6 +1,7 @@
 {
  "name": "resize",
  "scripts": {
-    "build": "../build-rust.sh"
+    "build:image": "docker build -t squoosh-resize .",
+    "build": "docker run --rm -v $(pwd):/src squoosh-resize ./build.sh"
  }
 }
--- a/codecs/resize/pkg/package.json
+++ b/codecs/resize/pkg/package.json
@ -1,15 +1,15 @@
 {
-  "name": "squoosh-resize",
+  "name": "resize",
  "collaborators": [
    "Surma <surma@surma.link>"
  ],
  "version": "0.1.0",
  "files": [
-    "squoosh_resize_bg.wasm",
-    "squoosh_resize.js",
-    "squoosh_resize.d.ts"
+    "resize_bg.wasm",
+    "resize.js",
+    "resize.d.ts"
  ],
-  "module": "squoosh_resize.js",
-  "types": "squoosh_resize.d.ts",
-  "sideEffects": false
+  "module": "resize.js",
+  "types": "resize.d.ts",
+  "sideEffects": "false"
 }
--- a/codecs/resize/pkg/resize.d.ts
+++ b/codecs/resize/pkg/resize.d.ts
@ -0,0 +1,13 @@
+/* tslint:disable */
+/**
+* @param {Uint8Array} input_image 
+* @param {number} input_width 
+* @param {number} input_height 
+* @param {number} output_width 
+* @param {number} output_height 
+* @param {number} typ_idx 
+* @param {boolean} premultiply 
+* @param {boolean} color_space_conversion 
+* @returns {Uint8Array} 
+*/
+export function resize(input_image: Uint8Array, input_width: number, input_height: number, output_width: number, output_height: number, typ_idx: number, premultiply: boolean, color_space_conversion: boolean): Uint8Array;
--- a/codecs/resize/pkg/resize.js
+++ b/codecs/resize/pkg/resize.js
@ -0,0 +1,50 @@
+import * as wasm from './resize_bg.wasm';
+
+let cachegetUint8Memory = null;
+function getUint8Memory() {
+    if (cachegetUint8Memory === null || cachegetUint8Memory.buffer !== wasm.memory.buffer) {
+        cachegetUint8Memory = new Uint8Array(wasm.memory.buffer);
+    }
+    return cachegetUint8Memory;
+}
+
+let WASM_VECTOR_LEN = 0;
+
+function passArray8ToWasm(arg) {
+    const ptr = wasm.__wbindgen_malloc(arg.length * 1);
+    getUint8Memory().set(arg, ptr / 1);
+    WASM_VECTOR_LEN = arg.length;
+    return ptr;
+}
+
+let cachegetInt32Memory = null;
+function getInt32Memory() {
+    if (cachegetInt32Memory === null || cachegetInt32Memory.buffer !== wasm.memory.buffer) {
+        cachegetInt32Memory = new Int32Array(wasm.memory.buffer);
+    }
+    return cachegetInt32Memory;
+}
+
+function getArrayU8FromWasm(ptr, len) {
+    return getUint8Memory().subarray(ptr / 1, ptr / 1 + len);
+}
+/**
+* @param {Uint8Array} input_image
+* @param {number} input_width
+* @param {number} input_height
+* @param {number} output_width
+* @param {number} output_height
+* @param {number} typ_idx
+* @param {boolean} premultiply
+* @param {boolean} color_space_conversion
+* @returns {Uint8Array}
+*/
+export function resize(input_image, input_width, input_height, output_width, output_height, typ_idx, premultiply, color_space_conversion) {
+    const retptr = 8;
+    const ret = wasm.resize(retptr, passArray8ToWasm(input_image), WASM_VECTOR_LEN, input_width, input_height, output_width, output_height, typ_idx, premultiply, color_space_conversion);
+    const memi32 = getInt32Memory();
+    const v0 = getArrayU8FromWasm(memi32[retptr / 4 + 0], memi32[retptr / 4 + 1]).slice();
+    wasm.__wbindgen_free(memi32[retptr / 4 + 0], memi32[retptr / 4 + 1] * 1);
+    return v0;
+}
+
--- a/codecs/resize/pkg/squoosh_resize_bg.d.ts
+++ b/codecs/resize/pkg/squoosh_resize_bg.d.ts
@ -1,6 +1,5 @@
 /* tslint:disable */
-/* eslint-disable */
 export const memory: WebAssembly.Memory;
-export function resize(a: number, b: number, c: number, d: number, e: number, f: number, g: number, h: number, i: number, j: number): void;
 export function __wbindgen_malloc(a: number): number;
 export function __wbindgen_free(a: number, b: number): void;
+export function resize(a: number, b: number, c: number, d: number, e: number, f: number, g: number, h: number, i: number, j: number): void;
--- a/codecs/resize/pkg/resize_bg.wasm
+++ b/codecs/resize/pkg/resize_bg.wasm
--- a/codecs/resize/pkg/squoosh_resize.d.ts
+++ b/codecs/resize/pkg/squoosh_resize.d.ts
@ -1,14 +0,0 @@
-/* tslint:disable */
-/* eslint-disable */
-/**
-* @param {Uint8Array} input_image
-* @param {number} input_width
-* @param {number} input_height
-* @param {number} output_width
-* @param {number} output_height
-* @param {number} typ_idx
-* @param {boolean} premultiply
-* @param {boolean} color_space_conversion
-* @returns {Uint8Array}
-*/
-export function resize(input_image: Uint8Array, input_width: number, input_height: number, output_width: number, output_height: number, typ_idx: number, premultiply: boolean, color_space_conversion: boolean): Uint8Array;
--- a/codecs/resize/pkg/squoosh_resize.js
+++ b/codecs/resize/pkg/squoosh_resize.js
@ -1,2 +0,0 @@
-import * as wasm from "./squoosh_resize_bg.wasm";
-export * from "./squoosh_resize_bg.js";
--- a/codecs/resize/pkg/squoosh_resize_bg.js
+++ b/codecs/resize/pkg/squoosh_resize_bg.js
@ -1,52 +0,0 @@
-import * as wasm from './squoosh_resize_bg.wasm';
-
-let cachegetUint8Memory0 = null;
-function getUint8Memory0() {
-    if (cachegetUint8Memory0 === null || cachegetUint8Memory0.buffer !== wasm.memory.buffer) {
-        cachegetUint8Memory0 = new Uint8Array(wasm.memory.buffer);
-    }
-    return cachegetUint8Memory0;
-}
-
-let WASM_VECTOR_LEN = 0;
-
-function passArray8ToWasm0(arg, malloc) {
-    const ptr = malloc(arg.length * 1);
-    getUint8Memory0().set(arg, ptr / 1);
-    WASM_VECTOR_LEN = arg.length;
-    return ptr;
-}
-
-let cachegetInt32Memory0 = null;
-function getInt32Memory0() {
-    if (cachegetInt32Memory0 === null || cachegetInt32Memory0.buffer !== wasm.memory.buffer) {
-        cachegetInt32Memory0 = new Int32Array(wasm.memory.buffer);
-    }
-    return cachegetInt32Memory0;
-}
-
-function getArrayU8FromWasm0(ptr, len) {
-    return getUint8Memory0().subarray(ptr / 1, ptr / 1 + len);
-}
-/**
-* @param {Uint8Array} input_image
-* @param {number} input_width
-* @param {number} input_height
-* @param {number} output_width
-* @param {number} output_height
-* @param {number} typ_idx
-* @param {boolean} premultiply
-* @param {boolean} color_space_conversion
-* @returns {Uint8Array}
-*/
-export function resize(input_image, input_width, input_height, output_width, output_height, typ_idx, premultiply, color_space_conversion) {
-    var ptr0 = passArray8ToWasm0(input_image, wasm.__wbindgen_malloc);
-    var len0 = WASM_VECTOR_LEN;
-    wasm.resize(8, ptr0, len0, input_width, input_height, output_width, output_height, typ_idx, premultiply, color_space_conversion);
-    var r0 = getInt32Memory0()[8 / 4 + 0];
-    var r1 = getInt32Memory0()[8 / 4 + 1];
-    var v1 = getArrayU8FromWasm0(r0, r1).slice();
-    wasm.__wbindgen_free(r0, r1 * 1);
-    return v1;
-}
-
--- a/codecs/resize/pkg/squoosh_resize_bg.wasm
+++ b/codecs/resize/pkg/squoosh_resize_bg.wasm
--- a/codecs/resize/src/lib.rs
+++ b/codecs/resize/src/lib.rs
@ -48,7 +48,7 @@ fn alpha_multiplier_funcs(
    if with_alpha_premultiplication {
        (
            |v, a| (v * (a as f32) / 255.0) as u8,
-            |v, a| ((v as f32) * 255.0 / (a as f32)).clamp(0.0, 255.0),
+            |v, a| (v as f32) * 255.0 / (a as f32).clamp(0.0, 255.0),
        )
    } else {
        (|v, _a| v as u8, |v, _a| v as f32)
--- a/codecs/rotate/.gitignore
+++ b/codecs/rotate/.gitignore
@ -1 +1,2 @@
 target
+Cargo.lock
--- a/codecs/rotate/Cargo.lock
+++ b/codecs/rotate/Cargo.lock
@ -1,6 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-[[package]]
-name = "squoosh-rotate"
-version = "0.1.0"
-
--- a/codecs/rotate/Cargo.toml
+++ b/codecs/rotate/Cargo.toml
@ -1,9 +1,8 @@
 [package]
-name = "squoosh-rotate"
+name = "rotate"
 version = "0.1.0"
 authors = ["Surma <surma@google.com>"]
 edition = "2018"
-publish = false

 [lib]
 name = "rotate"
--- a/codecs/rotate/build.sh
+++ b/codecs/rotate/build.sh
@ -1,8 +1,24 @@
-#!/bin/sh
+#!/bin/bash

 set -e

-cargo build \
-  --target wasm32-unknown-unknown \
-  --release
-wasm-opt -Os --strip target/wasm32-unknown-unknown/release/rotate.wasm -o rotate.wasm
+echo "============================================="
+echo "Compiling wasm"
+echo "============================================="
+(
+  cargo build \
+    --target wasm32-unknown-unknown \
+    --release
+  cp target/wasm32-unknown-unknown/release/rotate.wasm .
+  wasm-strip rotate.wasm
+)
+echo "============================================="
+echo "Compiling wasm  done"
+echo "============================================="
+
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+echo "Did you update your docker image?"
+echo "Run \`docker pull ubuntu\`"
+echo "Run \`docker pull rust\`"
+echo "Run \`docker build -t squoosh-rotate .\`"
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
--- a/codecs/rotate/package.json
+++ b/codecs/rotate/package.json
@ -1,7 +1,8 @@
 {
  "name": "rotate",
  "scripts": {
-    "build": "../build-rust.sh ./build.sh",
+    "build:image": "docker build -t squoosh-rotate .",
+    "build": "docker run --rm -v $(pwd):/src squoosh-rotate ./build.sh",
    "benchmark": "echo File size after gzip && npm run benchmark:filesize && echo Optimizing && npm run -s benchmark:optimizing",
    "benchmark:baseline": "v8 --liftoff --no-wasm-tier-up --no-opt ./benchmark.js",
    "benchmark:optimizing": "v8 --no-liftoff --no-wasm-tier-up ./benchmark.js",
--- a/codecs/rotate/rotate.wasm
+++ b/codecs/rotate/rotate.wasm
--- a/codecs/rust.Dockerfile
+++ b/codecs/rust.Dockerfile
@ -1,15 +0,0 @@
-FROM emscripten/emsdk:1.39.19 AS wasm-tools
-WORKDIR /opt/wasm-tools
-RUN wget -qO- https://github.com/rustwasm/wasm-pack/releases/download/v0.9.1/wasm-pack-v0.9.1-x86_64-unknown-linux-musl.tar.gz | tar -xzf - --strip 1
-
-FROM rust:1.44-stretch AS rust
-RUN rustup target add wasm32-unknown-unknown
-COPY --from=wasm-tools /emsdk/upstream/bin/wasm-opt /emsdk/upstream/bin/clang /usr/local/bin/
-COPY --from=wasm-tools /emsdk/upstream/lib/ /usr/local/lib/
-COPY --from=wasm-tools /emsdk/upstream/emscripten/system/include/libc/ /wasm32/include/
-COPY --from=wasm-tools /emsdk/upstream/emscripten/system/lib/libc/musl/arch/emscripten/bits/ /wasm32/include/bits/
-COPY --from=wasm-tools /opt/wasm-tools/wasm-pack /usr/local/cargo/bin/
-
-ENV CPATH="/wasm32/include"
-WORKDIR /src
-CMD ["sh", "-c", "rm -rf pkg && wasm-pack build -- --verbose --locked && rm pkg/.gitignore"]
--- a/codecs/webp/Makefile
+++ b/codecs/webp/Makefile
@ -1,56 +0,0 @@
-CODEC_URL := https://storage.googleapis.com/downloads.webmproject.org/releases/webp/libwebp-1.0.2.tar.gz
-CODEC_DIR = node_modules/libwebp
-CODEC_OUT_RELATIVE = src/.libs/libwebp.a
-CODEC_OUT := $(addprefix $(CODEC_DIR)/, $(CODEC_OUT_RELATIVE))
-OUT_JS = enc/webp_enc.js dec/webp_dec.js
-OUT_WASM = $(OUT_JS:.js=.wasm)
-
-.PHONY: all clean
-
-all: $(OUT_JS)
-
-%.js: %.cpp $(CODEC_OUT)
-	$(CXX) \
-		-I $(CODEC_DIR) \
-		${CXXFLAGS} \
-		${LDFLAGS} \
-		--bind \
-		--closure 1 \
-		-s ALLOW_MEMORY_GROWTH=1 \
-		-s MODULARIZE=1 \
-		-s 'EXPORT_NAME="$(basename $(@F))"' \
-		-o $@ \
-		$+
-
-$(CODEC_OUT): $(CODEC_DIR)/src/Makefile
-	$(MAKE) -C $(CODEC_DIR)/src
-
-$(CODEC_DIR)/src/Makefile: $(CODEC_DIR)/configure
-	cd $(CODEC_DIR) && ./configure \
-		--disable-shared \
-		--disable-libwebpdemux \
-		--disable-wic \
-		--disable-gif \
-		--disable-tiff \
-		--disable-jpeg \
-		--disable-png \
-		--disable-sdl \
-		--disable-gl \
-		--disable-threading \
-		--disable-neon-rtcd \
-		--disable-neon \
-		--disable-sse2 \
-		--disable-sse4.1
-
-$(CODEC_DIR)/configure: $(CODEC_DIR)/configure.ac
-	cd $(CODEC_DIR) && autoreconf -iv
-
-$(CODEC_DIR)/configure.ac: $(CODEC_DIR)
-
-$(CODEC_DIR):
-	mkdir -p $@
-	curl -sL $(CODEC_URL) | tar xz --strip 1 -C $@
-
-clean:
-	$(RM) $(OUT_JS) $(OUT_WASM)
-	$(MAKE) -C $(CODEC_DIR) clean
--- a/codecs/webp/dec/webp_dec.cpp
+++ b/codecs/webp/dec/webp_dec.cpp
@ -1,26 +0,0 @@
-#include <string>
-#include "emscripten/bind.h"
-#include "emscripten/val.h"
-#include "src/webp/decode.h"
-#include "src/webp/demux.h"
-
-using namespace emscripten;
-
-int version() {
-  return WebPGetDecoderVersion();
-}
-
-thread_local const val Uint8ClampedArray = val::global("Uint8ClampedArray");
-thread_local const val ImageData = val::global("ImageData");
-
-val decode(std::string buffer) {
-  int width, height;
-  std::unique_ptr<uint8_t[]> rgba(
-      WebPDecodeRGBA((const uint8_t*)buffer.c_str(), buffer.size(), &width, &height));
-  return ImageData.new_(Uint8ClampedArray.new_(typed_memory_view(width * height * 4, rgba.get())), width, height);
-}
-
-EMSCRIPTEN_BINDINGS(my_module) {
-  function("decode", &decode);
-  function("version", &version);
-}
--- a/codecs/webp/dec/webp_dec.d.ts
+++ b/codecs/webp/dec/webp_dec.d.ts
@ -1,5 +0,0 @@
-interface WebPModule extends EmscriptenWasm.Module {
-  decode(data: BufferSource): ImageData;
-}
-
-export default function(opts: EmscriptenWasm.ModuleOpts): WebPModule;
--- a/codecs/webp/dec/webp_dec.js
+++ b/codecs/webp/dec/webp_dec.js
@ -1,67 +0,0 @@
-
-var webp_dec = (function() {
-  var _scriptDir = typeof document !== 'undefined' && document.currentScript ? document.currentScript.src : undefined;
-  if (typeof __filename !== 'undefined') _scriptDir = _scriptDir || __filename;
-  return (
-function(webp_dec) {
-  webp_dec = webp_dec || {};
-
-
-var d;d||(d=typeof webp_dec !== 'undefined' ? webp_dec : {});var aa;d.ready=new Promise(function(a){aa=a});var t={},u;for(u in d)d.hasOwnProperty(u)&&(t[u]=d[u]);var v=!1,w=!1,ba=!1,ca=!1;v="object"===typeof window;w="function"===typeof importScripts;ba="object"===typeof process&&"object"===typeof process.versions&&"string"===typeof process.versions.node;ca=!v&&!ba&&!w;var x="",z,A,da,ea;
-if(ba)x=w?require("path").dirname(x)+"/":__dirname+"/",z=function(a,b){da||(da=require("fs"));ea||(ea=require("path"));a=ea.normalize(a);return da.readFileSync(a,b?null:"utf8")},A=function(a){a=z(a,!0);a.buffer||(a=new Uint8Array(a));a.buffer||B("Assertion failed: undefined");return a},1<process.argv.length&&process.argv[1].replace(/\\/g,"/"),process.argv.slice(2),process.on("uncaughtException",function(a){throw a;}),process.on("unhandledRejection",B),d.inspect=function(){return"[Emscripten Module object]"};
-else if(ca)"undefined"!=typeof read&&(z=function(a){return read(a)}),A=function(a){if("function"===typeof readbuffer)return new Uint8Array(readbuffer(a));a=read(a,"binary");"object"===typeof a||B("Assertion failed: undefined");return a},"undefined"!==typeof print&&("undefined"===typeof console&&(console={}),console.log=print,console.warn=console.error="undefined"!==typeof printErr?printErr:print);else if(v||w)w?x=self.location.href:document.currentScript&&(x=document.currentScript.src),_scriptDir&&
-(x=_scriptDir),0!==x.indexOf("blob:")?x=x.substr(0,x.lastIndexOf("/")+1):x="",z=function(a){var b=new XMLHttpRequest;b.open("GET",a,!1);b.send(null);return b.responseText},w&&(A=function(a){var b=new XMLHttpRequest;b.open("GET",a,!1);b.responseType="arraybuffer";b.send(null);return new Uint8Array(b.response)});var fa=d.print||console.log.bind(console),C=d.printErr||console.warn.bind(console);for(u in t)t.hasOwnProperty(u)&&(d[u]=t[u]);t=null;var D;d.wasmBinary&&(D=d.wasmBinary);var noExitRuntime;
-d.noExitRuntime&&(noExitRuntime=d.noExitRuntime);"object"!==typeof WebAssembly&&B("no native wasm support detected");var E,ha=new WebAssembly.Table({initial:130,maximum:130,element:"anyfunc"}),ia=!1,ja="undefined"!==typeof TextDecoder?new TextDecoder("utf8"):void 0;
-function ka(a,b,c){var e=F;if(0<c){c=b+c-1;for(var f=0;f<a.length;++f){var g=a.charCodeAt(f);if(55296<=g&&57343>=g){var n=a.charCodeAt(++f);g=65536+((g&1023)<<10)|n&1023}if(127>=g){if(b>=c)break;e[b++]=g}else{if(2047>=g){if(b+1>=c)break;e[b++]=192|g>>6}else{if(65535>=g){if(b+2>=c)break;e[b++]=224|g>>12}else{if(b+3>=c)break;e[b++]=240|g>>18;e[b++]=128|g>>12&63}e[b++]=128|g>>6&63}e[b++]=128|g&63}}e[b]=0}}var la="undefined"!==typeof TextDecoder?new TextDecoder("utf-16le"):void 0;
-function ma(a,b){var c=a>>1;for(var e=c+b/2;!(c>=e)&&G[c];)++c;c<<=1;if(32<c-a&&la)return la.decode(F.subarray(a,c));c=0;for(e="";;){var f=H[a+2*c>>1];if(0==f||c==b/2)return e;++c;e+=String.fromCharCode(f)}}function na(a,b,c){void 0===c&&(c=2147483647);if(2>c)return 0;c-=2;var e=b;c=c<2*a.length?c/2:a.length;for(var f=0;f<c;++f)H[b>>1]=a.charCodeAt(f),b+=2;H[b>>1]=0;return b-e}function oa(a){return 2*a.length}
-function pa(a,b){for(var c=0,e="";!(c>=b/4);){var f=I[a+4*c>>2];if(0==f)break;++c;65536<=f?(f-=65536,e+=String.fromCharCode(55296|f>>10,56320|f&1023)):e+=String.fromCharCode(f)}return e}function qa(a,b,c){void 0===c&&(c=2147483647);if(4>c)return 0;var e=b;c=e+c-4;for(var f=0;f<a.length;++f){var g=a.charCodeAt(f);if(55296<=g&&57343>=g){var n=a.charCodeAt(++f);g=65536+((g&1023)<<10)|n&1023}I[b>>2]=g;b+=4;if(b+4>c)break}I[b>>2]=0;return b-e}
-function ra(a){for(var b=0,c=0;c<a.length;++c){var e=a.charCodeAt(c);55296<=e&&57343>=e&&++c;b+=4}return b}var J,sa,F,H,G,I,L,ta,ua;function va(a){J=a;d.HEAP8=sa=new Int8Array(a);d.HEAP16=H=new Int16Array(a);d.HEAP32=I=new Int32Array(a);d.HEAPU8=F=new Uint8Array(a);d.HEAPU16=G=new Uint16Array(a);d.HEAPU32=L=new Uint32Array(a);d.HEAPF32=ta=new Float32Array(a);d.HEAPF64=ua=new Float64Array(a)}var wa=d.INITIAL_MEMORY||16777216;d.wasmMemory?E=d.wasmMemory:E=new WebAssembly.Memory({initial:wa/65536,maximum:32768});
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-(m-2)+" args!');\n}\n";y&&(p+="var destructors = [];\n");var Ua=y?"destructors":"null";K="throwBindingError invoker fn runDestructors retType classParam".split(" ");q=[W,q,g,$a,h[0],h[1]];r&&(p+="var thisWired = classParam.toWireType("+Ua+", this);\n");for(l=0;l<m-2;++l)p+="var arg"+l+"Wired = argType"+l+".toWireType("+Ua+", arg"+l+"); // "+h[l+2].name+"\n",K.push("argType"+l),q.push(h[l+2]);r&&(O="thisWired"+(0<O.length?", ":"")+O);p+=(Ta?"var rv = ":"")+"invoker(fn"+(0<O.length?", ":"")+O+");\n";
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-n,0!==e),K:null})},a:function(a,b,c){function e(g){g>>=2;var n=L;return new f(J,n[g+1],n[g])}var f=[Int8Array,Uint8Array,Int16Array,Uint16Array,Int32Array,Uint32Array,Float32Array,Float64Array][b];c=S(c);X(a,{name:c,fromWireType:e,argPackAdvance:8,readValueFromPointer:e},{R:!0})},h:function(a,b){b=S(b);var c="std::string"===b;X(a,{name:b,fromWireType:function(e){var f=L[e>>2];if(c)for(var g=e+4,n=0;n<=f;++n){var k=e+4+n;if(0==F[k]||n==f){if(g){var h=g;var p=F,q=h+(k-g);for(g=h;p[g]&&!(g>=q);)++g;
-if(16<g-h&&p.subarray&&ja)h=ja.decode(p.subarray(h,g));else{for(q="";h<g;){var m=p[h++];if(m&128){var r=p[h++]&63;if(192==(m&224))q+=String.fromCharCode((m&31)<<6|r);else{var y=p[h++]&63;m=224==(m&240)?(m&15)<<12|r<<6|y:(m&7)<<18|r<<12|y<<6|p[h++]&63;65536>m?q+=String.fromCharCode(m):(m-=65536,q+=String.fromCharCode(55296|m>>10,56320|m&1023))}}else q+=String.fromCharCode(m)}h=q}}else h="";if(void 0===l)var l=h;else l+=String.fromCharCode(0),l+=h;g=k+1}}else{l=Array(f);for(n=0;n<f;++n)l[n]=String.fromCharCode(F[e+
-4+n]);l=l.join("")}Z(e);return l},toWireType:function(e,f){f instanceof ArrayBuffer&&(f=new Uint8Array(f));var g="string"===typeof f;g||f instanceof Uint8Array||f instanceof Uint8ClampedArray||f instanceof Int8Array||W("Cannot pass non-string to std::string");var n=(c&&g?function(){for(var p=0,q=0;q<f.length;++q){var m=f.charCodeAt(q);55296<=m&&57343>=m&&(m=65536+((m&1023)<<10)|f.charCodeAt(++q)&1023);127>=m?++p:p=2047>=m?p+2:65535>=m?p+3:p+4}return p}:function(){return f.length})(),k=pb(4+n+1);L[k>>
-2]=n;if(c&&g)ka(f,k+4,n+1);else if(g)for(g=0;g<n;++g){var h=f.charCodeAt(g);255<h&&(Z(k),W("String has UTF-16 code units that do not fit in 8 bits"));F[k+4+g]=h}else for(g=0;g<n;++g)F[k+4+g]=f[g];null!==e&&e.push(Z,k);return k},argPackAdvance:8,readValueFromPointer:Wa,K:function(e){Z(e)}})},d:function(a,b,c){c=S(c);if(2===b){var e=ma;var f=na;var g=oa;var n=function(){return G};var k=1}else 4===b&&(e=pa,f=qa,g=ra,n=function(){return L},k=2);X(a,{name:c,fromWireType:function(h){for(var p=L[h>>2],q=
-n(),m,r=h+4,y=0;y<=p;++y){var l=h+4+y*b;if(0==q[l>>k]||y==p)r=e(r,l-r),void 0===m?m=r:(m+=String.fromCharCode(0),m+=r),r=l+b}Z(h);return m},toWireType:function(h,p){"string"!==typeof p&&W("Cannot pass non-string to C++ string type "+c);var q=g(p),m=pb(4+q+b);L[m>>2]=q>>k;f(p,m+4,q+b);null!==h&&h.push(Z,m);return m},argPackAdvance:8,readValueFromPointer:Wa,K:function(h){Z(h)}})},k:function(a,b){b=S(b);X(a,{S:!0,name:b,argPackAdvance:0,fromWireType:function(){},toWireType:function(){}})},o:Sa,s:function(a){if(0===
-a)return Va(kb());var b=jb[a];a=void 0===b?S(a):b;return Va(kb()[a])},n:function(a){4<a&&(Y[a].M+=1)},f:function(a,b,c,e){a||W("Cannot use deleted val. handle = "+a);a=Y[a].value;var f=mb[b];if(!f){f="";for(var g=0;g<b;++g)f+=(0!==g?", ":"")+"arg"+g;var n="return function emval_allocator_"+b+"(constructor, argTypes, args) {\n";for(g=0;g<b;++g)n+="var argType"+g+" = requireRegisteredType(Module['HEAP32'][(argTypes >>> 2) + "+g+'], "parameter '+g+'");\nvar arg'+g+" = argType"+g+".readValueFromPointer(args);\nargs += argType"+
-g+"['argPackAdvance'];\n";f=(new Function("requireRegisteredType","Module","__emval_register",n+("var obj = new constructor("+f+");\nreturn __emval_register(obj);\n}\n")))(lb,d,Va);mb[b]=f}return f(a,c,e)},q:function(){B()},p:function(a,b,c){F.copyWithin(a,b,b+c)},c:function(a){a>>>=0;var b=F.length;if(2147483648<a)return!1;for(var c=1;4>=c;c*=2){var e=b*(1+.2/c);e=Math.min(e,a+100663296);e=Math.max(16777216,a,e);0<e%65536&&(e+=65536-e%65536);a:{try{E.grow(Math.min(2147483648,e)-J.byteLength+65535>>>
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-(function(){function a(f){d.asm=f.exports;N--;d.monitorRunDependencies&&d.monitorRunDependencies(N);0==N&&(null!==Ca&&(clearInterval(Ca),Ca=null),P&&(f=P,P=null,f()))}function b(f){a(f.instance)}function c(f){return Ha().then(function(g){return WebAssembly.instantiate(g,e)}).then(f,function(g){C("failed to asynchronously prepare wasm: "+g);B(g)})}var e={a:qb};N++;d.monitorRunDependencies&&d.monitorRunDependencies(N);if(d.instantiateWasm)try{return d.instantiateWasm(e,a)}catch(f){return C("Module.instantiateWasm callback failed with error: "+
-f),!1}(function(){if(D||"function"!==typeof WebAssembly.instantiateStreaming||Ea()||Da("file://")||"function"!==typeof fetch)return c(b);fetch(Q,{credentials:"same-origin"}).then(function(f){return WebAssembly.instantiateStreaming(f,e).then(b,function(g){C("wasm streaming compile failed: "+g);C("falling back to ArrayBuffer instantiation");return c(b)})})})();return{}})();
-var Ia=d.___wasm_call_ctors=function(){return(Ia=d.___wasm_call_ctors=d.asm.t).apply(null,arguments)},pb=d._malloc=function(){return(pb=d._malloc=d.asm.u).apply(null,arguments)},Z=d._free=function(){return(Z=d._free=d.asm.v).apply(null,arguments)},gb=d.___getTypeName=function(){return(gb=d.___getTypeName=d.asm.w).apply(null,arguments)};d.___embind_register_native_and_builtin_types=function(){return(d.___embind_register_native_and_builtin_types=d.asm.x).apply(null,arguments)};
-d.dynCall_iii=function(){return(d.dynCall_iii=d.asm.y).apply(null,arguments)};d.dynCall_vii=function(){return(d.dynCall_vii=d.asm.z).apply(null,arguments)};d.dynCall_ii=function(){return(d.dynCall_ii=d.asm.A).apply(null,arguments)};d.dynCall_i=function(){return(d.dynCall_i=d.asm.B).apply(null,arguments)};d.dynCall_vi=function(){return(d.dynCall_vi=d.asm.C).apply(null,arguments)};d.dynCall_iiii=function(){return(d.dynCall_iiii=d.asm.D).apply(null,arguments)};
-d.dynCall_iiiiiii=function(){return(d.dynCall_iiiiiii=d.asm.E).apply(null,arguments)};d.dynCall_viiii=function(){return(d.dynCall_viiii=d.asm.F).apply(null,arguments)};d.dynCall_viiiii=function(){return(d.dynCall_viiiii=d.asm.G).apply(null,arguments)};d.dynCall_viiiiiiiii=function(){return(d.dynCall_viiiiiiiii=d.asm.H).apply(null,arguments)};d.dynCall_viiiiii=function(){return(d.dynCall_viiiiii=d.asm.I).apply(null,arguments)};var rb;P=function sb(){rb||tb();rb||(P=sb)};
-function tb(){function a(){if(!rb&&(rb=!0,d.calledRun=!0,!ia)){M(ya);M(za);aa(d);if(d.onRuntimeInitialized)d.onRuntimeInitialized();if(d.postRun)for("function"==typeof d.postRun&&(d.postRun=[d.postRun]);d.postRun.length;){var b=d.postRun.shift();Aa.unshift(b)}M(Aa)}}if(!(0<N)){if(d.preRun)for("function"==typeof d.preRun&&(d.preRun=[d.preRun]);d.preRun.length;)Ba();M(xa);0<N||(d.setStatus?(d.setStatus("Running..."),setTimeout(function(){setTimeout(function(){d.setStatus("")},1);a()},1)):a())}}
-d.run=tb;if(d.preInit)for("function"==typeof d.preInit&&(d.preInit=[d.preInit]);0<d.preInit.length;)d.preInit.pop()();noExitRuntime=!0;tb();
-
-
-  return webp_dec.ready
-}
-);
-})();
-if (typeof exports === 'object' && typeof module === 'object')
-      module.exports = webp_dec;
-    else if (typeof define === 'function' && define['amd'])
-      define([], function() { return webp_dec; });
-    else if (typeof exports === 'object')
-      exports["webp_dec"] = webp_dec;
-    
--- a/codecs/webp/dec/webp_dec.wasm
+++ b/codecs/webp/dec/webp_dec.wasm
--- a/codecs/webp/enc/webp_enc.cpp
+++ b/codecs/webp/enc/webp_enc.cpp
@ -1,88 +0,0 @@
-#include <emscripten/bind.h>
-#include <emscripten/val.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdexcept>
-#include "src/webp/encode.h"
-
-using namespace emscripten;
-
-int version() {
-  return WebPGetEncoderVersion();
-}
-
-thread_local const val Uint8Array = val::global("Uint8Array");
-
-val encode(std::string img, int width, int height, WebPConfig config) {
-  uint8_t* img_in = (uint8_t*)img.c_str();
-
-  // A lot of this is duplicated from Encode in picture_enc.c
-  WebPPicture pic;
-  WebPMemoryWriter wrt;
-  int ok;
-
-  if (!WebPPictureInit(&pic)) {
-    // shouldn't happen, except if system installation is broken
-    throw std::runtime_error("Unexpected error");
-  }
-
-  // Only use use_argb if we really need it, as it's slower.
-  pic.use_argb = config.lossless || config.use_sharp_yuv || config.preprocessing > 0;
-  pic.width = width;
-  pic.height = height;
-  pic.writer = WebPMemoryWrite;
-  pic.custom_ptr = &wrt;
-
-  WebPMemoryWriterInit(&wrt);
-
-  ok = WebPPictureImportRGBA(&pic, (uint8_t*)img_in, width * 4) && WebPEncode(&config, &pic);
-  WebPPictureFree(&pic);
-  if (!ok) {
-    WebPMemoryWriterClear(&wrt);
-    throw std::runtime_error("Encode failed");
-  }
-
-  val js_result = Uint8Array.new_(typed_memory_view(wrt.size, wrt.mem));
-  WebPFree(wrt.mem);
-  return js_result;
-}
-
-EMSCRIPTEN_BINDINGS(my_module) {
-  enum_<WebPImageHint>("WebPImageHint")
-      .value("WEBP_HINT_DEFAULT", WebPImageHint::WEBP_HINT_DEFAULT)
-      .value("WEBP_HINT_PICTURE", WebPImageHint::WEBP_HINT_PICTURE)
-      .value("WEBP_HINT_PHOTO", WebPImageHint::WEBP_HINT_PHOTO)
-      .value("WEBP_HINT_GRAPH", WebPImageHint::WEBP_HINT_GRAPH);
-
-  value_object<WebPConfig>("WebPConfig")
-      .field("lossless", &WebPConfig::lossless)
-      .field("quality", &WebPConfig::quality)
-      .field("method", &WebPConfig::method)
-      .field("image_hint", &WebPConfig::image_hint)
-      .field("target_size", &WebPConfig::target_size)
-      .field("target_PSNR", &WebPConfig::target_PSNR)
-      .field("segments", &WebPConfig::segments)
-      .field("sns_strength", &WebPConfig::sns_strength)
-      .field("filter_strength", &WebPConfig::filter_strength)
-      .field("filter_sharpness", &WebPConfig::filter_sharpness)
-      .field("filter_type", &WebPConfig::filter_type)
-      .field("autofilter", &WebPConfig::autofilter)
-      .field("alpha_compression", &WebPConfig::alpha_compression)
-      .field("alpha_filtering", &WebPConfig::alpha_filtering)
-      .field("alpha_quality", &WebPConfig::alpha_quality)
-      .field("pass", &WebPConfig::pass)
-      .field("show_compressed", &WebPConfig::show_compressed)
-      .field("preprocessing", &WebPConfig::preprocessing)
-      .field("partitions", &WebPConfig::partitions)
-      .field("partition_limit", &WebPConfig::partition_limit)
-      .field("emulate_jpeg_size", &WebPConfig::emulate_jpeg_size)
-      .field("thread_level", &WebPConfig::thread_level)
-      .field("low_memory", &WebPConfig::low_memory)
-      .field("near_lossless", &WebPConfig::near_lossless)
-      .field("exact", &WebPConfig::exact)
-      .field("use_delta_palette", &WebPConfig::use_delta_palette)
-      .field("use_sharp_yuv", &WebPConfig::use_sharp_yuv);
-
-  function("version", &version);
-  function("encode", &encode);
-}
--- a/codecs/webp/enc/webp_enc.js
+++ b/codecs/webp/enc/webp_enc.js
@ -1,72 +0,0 @@
-
-var webp_enc = (function() {
-  var _scriptDir = typeof document !== 'undefined' && document.currentScript ? document.currentScript.src : undefined;
-  if (typeof __filename !== 'undefined') _scriptDir = _scriptDir || __filename;
-  return (
-function(webp_enc) {
-  webp_enc = webp_enc || {};
-
-
-var d;d||(d=typeof webp_enc !== 'undefined' ? webp_enc : {});var aa;d.ready=new Promise(function(a){aa=a});var r={},u;for(u in d)d.hasOwnProperty(u)&&(r[u]=d[u]);var w=!1,x=!1,ba=!1,ca=!1;w="object"===typeof window;x="function"===typeof importScripts;ba="object"===typeof process&&"object"===typeof process.versions&&"string"===typeof process.versions.node;ca=!w&&!ba&&!x;var y="",A,B,da,ea;
-if(ba)y=x?require("path").dirname(y)+"/":__dirname+"/",A=function(a,b){da||(da=require("fs"));ea||(ea=require("path"));a=ea.normalize(a);return da.readFileSync(a,b?null:"utf8")},B=function(a){a=A(a,!0);a.buffer||(a=new Uint8Array(a));a.buffer||C("Assertion failed: undefined");return a},1<process.argv.length&&process.argv[1].replace(/\\/g,"/"),process.argv.slice(2),process.on("uncaughtException",function(a){throw a;}),process.on("unhandledRejection",C),d.inspect=function(){return"[Emscripten Module object]"};
-else if(ca)"undefined"!=typeof read&&(A=function(a){return read(a)}),B=function(a){if("function"===typeof readbuffer)return new Uint8Array(readbuffer(a));a=read(a,"binary");"object"===typeof a||C("Assertion failed: undefined");return a},"undefined"!==typeof print&&("undefined"===typeof console&&(console={}),console.log=print,console.warn=console.error="undefined"!==typeof printErr?printErr:print);else if(w||x)x?y=self.location.href:document.currentScript&&(y=document.currentScript.src),_scriptDir&&
-(y=_scriptDir),0!==y.indexOf("blob:")?y=y.substr(0,y.lastIndexOf("/")+1):y="",A=function(a){var b=new XMLHttpRequest;b.open("GET",a,!1);b.send(null);return b.responseText},x&&(B=function(a){var b=new XMLHttpRequest;b.open("GET",a,!1);b.responseType="arraybuffer";b.send(null);return new Uint8Array(b.response)});var fa=d.print||console.log.bind(console),D=d.printErr||console.warn.bind(console);for(u in r)r.hasOwnProperty(u)&&(d[u]=r[u]);r=null;var E;d.wasmBinary&&(E=d.wasmBinary);var noExitRuntime;
-d.noExitRuntime&&(noExitRuntime=d.noExitRuntime);"object"!==typeof WebAssembly&&C("no native wasm support detected");var G,ha=new WebAssembly.Table({initial:128,maximum:128,element:"anyfunc"}),ia=!1,ja="undefined"!==typeof TextDecoder?new TextDecoder("utf8"):void 0;
-function la(a,b,c){var e=H;if(0<c){c=b+c-1;for(var f=0;f<a.length;++f){var g=a.charCodeAt(f);if(55296<=g&&57343>=g){var l=a.charCodeAt(++f);g=65536+((g&1023)<<10)|l&1023}if(127>=g){if(b>=c)break;e[b++]=g}else{if(2047>=g){if(b+1>=c)break;e[b++]=192|g>>6}else{if(65535>=g){if(b+2>=c)break;e[b++]=224|g>>12}else{if(b+3>=c)break;e[b++]=240|g>>18;e[b++]=128|g>>12&63}e[b++]=128|g>>6&63}e[b++]=128|g&63}}e[b]=0}}var ma="undefined"!==typeof TextDecoder?new TextDecoder("utf-16le"):void 0;
-function na(a,b){var c=a>>1;for(var e=c+b/2;!(c>=e)&&I[c];)++c;c<<=1;if(32<c-a&&ma)return ma.decode(H.subarray(a,c));c=0;for(e="";;){var f=J[a+2*c>>1];if(0==f||c==b/2)return e;++c;e+=String.fromCharCode(f)}}function oa(a,b,c){void 0===c&&(c=2147483647);if(2>c)return 0;c-=2;var e=b;c=c<2*a.length?c/2:a.length;for(var f=0;f<c;++f)J[b>>1]=a.charCodeAt(f),b+=2;J[b>>1]=0;return b-e}function pa(a){return 2*a.length}
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-function vb(){function a(){if(!tb&&(tb=!0,d.calledRun=!0,!ia)){xa(za);xa(Aa);aa(d);if(d.onRuntimeInitialized)d.onRuntimeInitialized();if(d.postRun)for("function"==typeof d.postRun&&(d.postRun=[d.postRun]);d.postRun.length;){var b=d.postRun.shift();Ba.unshift(b)}xa(Ba)}}if(!(0<O)){if(d.preRun)for("function"==typeof d.preRun&&(d.preRun=[d.preRun]);d.preRun.length;)Ca();xa(ya);0<O||(d.setStatus?(d.setStatus("Running..."),setTimeout(function(){setTimeout(function(){d.setStatus("")},1);a()},1)):a())}}
-d.run=vb;if(d.preInit)for("function"==typeof d.preInit&&(d.preInit=[d.preInit]);0<d.preInit.length;)d.preInit.pop()();noExitRuntime=!0;vb();
-
-
-  return webp_enc.ready
-}
-);
-})();
-if (typeof exports === 'object' && typeof module === 'object')
-      module.exports = webp_enc;
-    else if (typeof define === 'function' && define['amd'])
-      define([], function() { return webp_enc; });
-    else if (typeof exports === 'object')
-      exports["webp_enc"] = webp_enc;
-    
--- a/codecs/webp/enc/webp_enc.wasm
+++ b/codecs/webp/enc/webp_enc.wasm
--- a/codecs/webp/package-lock.json
+++ b/codecs/webp/package-lock.json
@ -1,4 +0,0 @@
-{
-  "name": "webp",
-  "lockfileVersion": 1
-}
--- a/codecs/webp/package.json
+++ b/codecs/webp/package.json
@ -1,6 +0,0 @@
-{
-  "name": "webp",
-  "scripts": {
-    "build": "../build-cpp.sh"
-  }
-}
--- a/codecs/webp_dec/README.md
+++ b/codecs/webp_dec/README.md
@ -16,3 +16,7 @@ Returns the version of libwebp as a number. va.b.c is encoded as 0x0a0b0c
 ### `RawImage decode(std::string buffer)`

 Decodes the given webp buffer into raw RGBA. `RawImage` is a class with 3 fields: `buffer`, `width`, and `height`.
+
+### `void free_result()`
+
+Frees the result created by `decode()`.
--- a/codecs/webp_dec/build.sh
+++ b/codecs/webp_dec/build.sh
@ -0,0 +1,61 @@
+#!/bin/bash
+
+set -e
+
+export OPTIMIZE="-Os"
+export LDFLAGS="${OPTIMIZE}"
+export CFLAGS="${OPTIMIZE}"
+export CPPFLAGS="${OPTIMIZE}"
+apt-get update
+apt-get install -qqy autoconf libtool libpng-dev pkg-config
+
+echo "============================================="
+echo "Compiling libwebp"
+echo "============================================="
+test -n "$SKIP_LIBWEBP" || (
+  cd node_modules/libwebp
+  autoreconf -fiv
+  rm -rf build || true
+  mkdir -p build && cd build
+  emconfigure ../configure \
+    --disable-libwebpdemux \
+    --disable-wic \
+    --disable-gif \
+    --disable-tiff \
+    --disable-jpeg \
+    --disable-png \
+    --disable-sdl \
+    --disable-gl \
+    --disable-threading \
+    --disable-neon-rtcd \
+    --disable-neon \
+    --disable-sse2 \
+    --disable-sse4.1
+  emmake make -j`nproc`
+)
+echo "============================================="
+echo "Compiling wasm bindings"
+echo "============================================="
+(
+  emcc \
+    ${OPTIMIZE} \
+    --closure 1 \
+    --bind \
+    -s ALLOW_MEMORY_GROWTH=1 \
+    -s MODULARIZE=1 \
+    -s 'EXPORT_NAME="webp_dec"' \
+    --std=c++11 \
+    -I node_modules/libwebp \
+    -o ./webp_dec.js \
+    -x c++ \
+    webp_dec.cpp \
+    node_modules/libwebp/build/src/.libs/libwebp.a
+)
+echo "============================================="
+echo "Compiling wasm bindings done"
+echo "============================================="
+
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+echo "Did you update your docker image?"
+echo "Run \`docker pull trzeci/emscripten-upstream\`"
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
--- a/codecs/webp_dec/example.html
+++ b/codecs/webp_dec/example.html
@ -10,8 +10,10 @@

  Module.onRuntimeInitialized = async _ => {
    console.log('Version:', Module.version().toString(16));
-    const image = await loadFile('../../example.webp');
-    const imageData = Module.decode(image);
+    const image = await loadFile('../example.webp');
+    const result = Module.decode(image);
+    const imageData = new ImageData(new Uint8ClampedArray(result.buffer), result.width, result.height);
+    Module.free_result();
    const canvas = document.createElement('canvas');
    canvas.width = result.width;
    canvas.height = result.height;
--- a/codecs/webp_dec/package-lock.json
+++ b/codecs/webp_dec/package-lock.json
--- a/codecs/webp_dec/package.json
+++ b/codecs/webp_dec/package.json
@ -0,0 +1,13 @@
+{
+  "name": "webp_dec",
+  "scripts": {
+    "install": "napa",
+    "build": "docker run --rm -v $(pwd):/src trzeci/emscripten-upstream ./build.sh"
+  },
+  "napa": {
+    "libwebp": "webmproject/libwebp#v1.0.2"
+  },
+  "devDependencies": {
+    "napa": "3.0.0"
+  }
+}
--- a/codecs/webp_dec/webp_dec.cpp
+++ b/codecs/webp_dec/webp_dec.cpp
@ -0,0 +1,47 @@
+#include "emscripten/bind.h"
+#include "emscripten/val.h"
+#include "src/webp/decode.h"
+#include "src/webp/demux.h"
+#include <string>
+
+using namespace emscripten;
+
+int version() {
+  return WebPGetDecoderVersion();
+}
+
+class RawImage {
+public:
+  val buffer;
+  int width;
+  int height;
+
+  RawImage(val b, int w, int h)
+    : buffer(b), width(w), height(h) {}
+};
+
+uint8_t* last_result;
+RawImage decode(std::string buffer) {
+  int width, height;
+  last_result = WebPDecodeRGBA((const uint8_t*)buffer.c_str(), buffer.size(), &width, &height);
+  return RawImage(
+    val(typed_memory_view(width*height*4, last_result)),
+    width,
+    height
+  );
+}
+
+void free_result() {
+  free(last_result);
+}
+
+EMSCRIPTEN_BINDINGS(my_module) {
+  class_<RawImage>("RawImage")
+    .property("buffer", &RawImage::buffer)
+    .property("width", &RawImage::width)
+    .property("height", &RawImage::height);
+
+  function("decode", &decode);
+  function("version", &version);
+  function("free_result", &free_result);
+}
--- a/codecs/webp_dec/webp_dec.d.ts
+++ b/codecs/webp_dec/webp_dec.d.ts
@ -0,0 +1,13 @@
+interface RawImage {
+  buffer: Uint8Array;
+  width: number;
+  height: number;
+}
+
+interface WebPModule extends EmscriptenWasm.Module {
+  decode(data: BufferSource): RawImage;
+  free_result(): void;
+}
+
+export default function(opts: EmscriptenWasm.ModuleOpts): WebPModule;
+
--- a/codecs/webp_dec/webp_dec.js
+++ b/codecs/webp_dec/webp_dec.js
@ -0,0 +1,79 @@
+
+var webp_dec = (function() {
+  var _scriptDir = typeof document !== 'undefined' && document.currentScript ? document.currentScript.src : undefined;
+  if (typeof __filename !== 'undefined') _scriptDir = _scriptDir || __filename;
+  return (
+function(webp_dec) {
+  webp_dec = webp_dec || {};
+
+var e;e||(e=typeof webp_dec !== 'undefined' ? webp_dec : {});var r={},w;for(w in e)e.hasOwnProperty(w)&&(r[w]=e[w]);var aa=!1,z=!1,ba=!1,ca=!1;aa="object"===typeof window;z="function"===typeof importScripts;ba="object"===typeof process&&"object"===typeof process.versions&&"string"===typeof process.versions.node;ca=!aa&&!ba&&!z;var A="",da,B,ea,ha;
+if(ba)A=z?require("path").dirname(A)+"/":__dirname+"/",da=function(a,b){ea||(ea=require("fs"));ha||(ha=require("path"));a=ha.normalize(a);return ea.readFileSync(a,b?null:"utf8")},B=function(a){a=da(a,!0);a.buffer||(a=new Uint8Array(a));a.buffer||D("Assertion failed: undefined");return a},1<process.argv.length&&process.argv[1].replace(/\\/g,"/"),process.argv.slice(2),process.on("uncaughtException",function(a){throw a;}),process.on("unhandledRejection",D),e.inspect=function(){return"[Emscripten Module object]"};
+else if(ca)"undefined"!=typeof read&&(da=function(a){return read(a)}),B=function(a){if("function"===typeof readbuffer)return new Uint8Array(readbuffer(a));a=read(a,"binary");"object"===typeof a||D("Assertion failed: undefined");return a},"undefined"!==typeof print&&("undefined"===typeof console&&(console={}),console.log=print,console.warn=console.error="undefined"!==typeof printErr?printErr:print);else if(aa||z)z?A=self.location.href:document.currentScript&&(A=document.currentScript.src),_scriptDir&&
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+var La=e.___wasm_call_ctors=function(){return(La=e.___wasm_call_ctors=e.asm.s).apply(null,arguments)},Y=e._free=function(){return(Y=e._free=e.asm.t).apply(null,arguments)},Ib=e._malloc=function(){return(Ib=e._malloc=e.asm.u).apply(null,arguments)},wb=e.___getTypeName=function(){return(wb=e.___getTypeName=e.asm.v).apply(null,arguments)};e.___embind_register_native_and_builtin_types=function(){return(e.___embind_register_native_and_builtin_types=e.asm.w).apply(null,arguments)};
+e.dynCall_ii=function(){return(e.dynCall_ii=e.asm.x).apply(null,arguments)};e.dynCall_vi=function(){return(e.dynCall_vi=e.asm.y).apply(null,arguments)};e.dynCall_iii=function(){return(e.dynCall_iii=e.asm.z).apply(null,arguments)};e.dynCall_viii=function(){return(e.dynCall_viii=e.asm.A).apply(null,arguments)};e.dynCall_vii=function(){return(e.dynCall_vii=e.asm.B).apply(null,arguments)};e.dynCall_i=function(){return(e.dynCall_i=e.asm.C).apply(null,arguments)};
+e.dynCall_v=function(){return(e.dynCall_v=e.asm.D).apply(null,arguments)};e.dynCall_iiii=function(){return(e.dynCall_iiii=e.asm.E).apply(null,arguments)};e.dynCall_iiiiiii=function(){return(e.dynCall_iiiiiii=e.asm.F).apply(null,arguments)};e.dynCall_viiii=function(){return(e.dynCall_viiii=e.asm.G).apply(null,arguments)};e.dynCall_viiiiii=function(){return(e.dynCall_viiiiii=e.asm.H).apply(null,arguments)};e.dynCall_viiiii=function(){return(e.dynCall_viiiii=e.asm.I).apply(null,arguments)};
+e.dynCall_viiiiiiiii=function(){return(e.dynCall_viiiiiiiii=e.asm.J).apply(null,arguments)};e.dynCall_jiiii=function(){return(e.dynCall_jiiii=e.asm.K).apply(null,arguments)};e.asm=Kb;var Lb;e.then=function(a){if(Lb)a(e);else{var b=e.onRuntimeInitialized;e.onRuntimeInitialized=function(){b&&b();a(e)}}return e};N=function Mb(){Lb||Nb();Lb||(N=Mb)};
+function Nb(){function a(){if(!Lb&&(Lb=!0,e.calledRun=!0,!ka)){Aa(Ca);Aa(Da);if(e.onRuntimeInitialized)e.onRuntimeInitialized();if(e.postRun)for("function"==typeof e.postRun&&(e.postRun=[e.postRun]);e.postRun.length;){var b=e.postRun.shift();Ea.unshift(b)}Aa(Ea)}}if(!(0<M)){if(e.preRun)for("function"==typeof e.preRun&&(e.preRun=[e.preRun]);e.preRun.length;)Fa();Aa(Ba);0<M||(e.setStatus?(e.setStatus("Running..."),setTimeout(function(){setTimeout(function(){e.setStatus("")},1);a()},1)):a())}}
+e.run=Nb;if(e.preInit)for("function"==typeof e.preInit&&(e.preInit=[e.preInit]);0<e.preInit.length;)e.preInit.pop()();noExitRuntime=!0;Nb();
+
+
+  return webp_dec
+}
+);
+})();
+if (typeof exports === 'object' && typeof module === 'object')
+      module.exports = webp_dec;
+    else if (typeof define === 'function' && define['amd'])
+      define([], function() { return webp_dec; });
+    else if (typeof exports === 'object')
+      exports["webp_dec"] = webp_dec;
+    
--- a/codecs/webp_dec/webp_dec.wasm
+++ b/codecs/webp_dec/webp_dec.wasm
--- a/codecs/webp_enc/README.md
+++ b/codecs/webp_enc/README.md
@ -20,3 +20,7 @@ Returns the version of libwebp as a number. va.b.c is encoded as 0x0a0b0c
 ### `UInt8Array encode(uint8_t* image_buffer, int image_width, int image_height, WebPConfig config)`

 Encodes the given image with given dimension to WebP.
+
+### `void free_result()`
+
+Frees the last result created by `encode()`.
--- a/codecs/webp_enc/build.sh
+++ b/codecs/webp_enc/build.sh
@ -0,0 +1,62 @@
+#!/bin/bash
+
+set -e
+
+export OPTIMIZE="-Os"
+export LDFLAGS="${OPTIMIZE}"
+export CFLAGS="${OPTIMIZE}"
+export CPPFLAGS="${OPTIMIZE}"
+
+apt-get update
+apt-get install -qqy autoconf libtool libpng-dev pkg-config
+
+echo "============================================="
+echo "Compiling libwebp"
+echo "============================================="
+test -n "$SKIP_LIBWEBP" || (
+  cd node_modules/libwebp
+  autoreconf -fiv
+  rm -rf build || true
+  mkdir -p build && cd build
+  emconfigure ../configure \
+    --disable-libwebpdemux \
+    --disable-wic \
+    --disable-gif \
+    --disable-tiff \
+    --disable-jpeg \
+    --disable-png \
+    --disable-sdl \
+    --disable-gl \
+    --disable-threading \
+    --disable-neon-rtcd \
+    --disable-neon \
+    --disable-sse2 \
+    --disable-sse4.1
+  emmake make -j`nproc`
+)
+echo "============================================="
+echo "Compiling wasm bindings"
+echo "============================================="
+(
+  emcc \
+    ${OPTIMIZE} \
+    --closure 1 \
+    --bind \
+    -s ALLOW_MEMORY_GROWTH=1 \
+    -s MODULARIZE=1 \
+    -s 'EXPORT_NAME="webp_enc"' \
+    --std=c++11 \
+    -I node_modules/libwebp \
+    -o ./webp_enc.js \
+    -x c++ \
+    webp_enc.cpp \
+    node_modules/libwebp/build/src/.libs/libwebp.a
+)
+echo "============================================="
+echo "Compiling wasm bindings done"
+echo "============================================="
+
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+echo "Did you update your docker image?"
+echo "Run \`docker pull trzeci/emscripten-upstream\`"
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
--- a/codecs/webp_enc/example.html
+++ b/codecs/webp_enc/example.html
@ -19,7 +19,7 @@

  module.onRuntimeInitialized = async _ => {
    console.log('Version:', module.version().toString(16));
-    const image = await loadImage('../../example.png');
+    const image = await loadImage('../example.png');
    const result = module.encode(image.data, image.width, image.height, {
      quality: 75,
      target_size: 0,
@ -52,6 +52,8 @@
    console.log('size', result.length);
    const blob = new Blob([result], {type: 'image/webp'});

+    module.free_result();
+
    const blobURL = URL.createObjectURL(blob);
    const img = document.createElement('img');
    img.src = blobURL;
--- a/codecs/webp_enc/package-lock.json
+++ b/codecs/webp_enc/package-lock.json
--- a/Show More
+++ b/Show More