.github/actions/cache-emsdk/action.yml

@@ -0,0 +1,10 @@
+name: Cache the installed copy of emsdk and its build artifacts
+
+runs:
+  using: "composite"
+  steps:
+    - name: Cache emsdk
+      uses: actions/cache@v3
+      with:
+        path: javascript/.emsdk
+        key: emsdk-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('yarn.lock', 'javascript/package.json', 'javascript/just.config.cjs'}}

.github/actions/install-emsdk/action.yml

@@ -1,23 +0,0 @@
-name: Install emsdk (including emcc)
-inputs:
-  version:
-    description: EMCC Version to install
-    required: false
-    default: 3.1.28
-
-runs:
-  using: "composite"
-  steps:
-    - name: Clone emsdk repo
-      working-directory: ${{ runner.temp }}
-      shell: bash
-      run: git clone https://github.com/emscripten-core/emsdk.git
-
-    - name: emdsk install
-      working-directory: ${{ runner.temp }}/emsdk
-      shell: bash
-      run: |
-        ./emsdk install ${{ inputs.version }}
-        ./emsdk activate ${{ inputs.version }}
-        echo $RUNNER_TEMP/emsdk >> $GITHUB_PATH
-        echo $RUNNER_TEMP/emsdk/upstream/emscripten >> $GITHUB_PATH

.github/actions/setup-js/action.yml

@@ -3,12 +3,6 @@ name: Setup JavaScript envirionment
 runs:
   using: "composite"
   steps:
-    - name: Install emsdk
-      uses: ./.github/actions/install-emsdk
-
-    - name: Install Ninja
-      uses: ./.github/actions/install-ninja
-
     - name: Setup Node environment
       uses: actions/setup-node@v3
       with:

.github/workflows/validate-js.yml

@@ -24,6 +24,9 @@ jobs:
       - name: Setup
         uses: ./.github/actions/setup-js
 
+      - name: Restore emsdk
+        uses: ./.github/actions/cache-emsdk
+
       - name: yarn benchmark
         run: yarn benchmark
         working-directory: javascript
@@ -40,8 +43,11 @@ jobs:
       - name: Setup
         uses: ./.github/actions/setup-js
 
+      - name: Restore emsdk
+        uses: ./.github/actions/cache-emsdk
+
       - name: yarn build
-        run: yarn build
+        run: yarn build --verbose
         working-directory: javascript
 
   test:
@@ -56,6 +62,9 @@ jobs:
       - name: Setup
         uses: ./.github/actions/setup-js
 
+      - name: Restore emsdk
+        uses: ./.github/actions/cache-emsdk
+
       - name: yarn test
         run: yarn test
         working-directory: javascript
@@ -94,6 +103,9 @@ jobs:
       - name: Setup
         uses: ./.github/actions/setup-js
 
+      - name: Restore emsdk
+        uses: ./.github/actions/cache-emsdk
+
       - name: yarn pack
         run: yarn pack --filename yoga-layout.tar.gz
         working-directory: javascript

.github/workflows/validate-website.yml

@@ -34,6 +34,9 @@ jobs:
       - name: Setup
         uses: ./.github/actions/setup-js
 
+      - name: Restore emsdk
+        uses: ./.github/actions/cache-emsdk
+
       - name: Build Website
         run: yarn build
         working-directory: website-next

javascript/.gitignore

@@ -1,3 +1,4 @@
+/.emsdk
 /binaries
 /build
 /dist

javascript/CMakeLists.txt

@@ -44,7 +44,11 @@ add_link_options(
     "SHELL:-s MODULARIZE=1"
     "SHELL:-s EXPORT_ES6=1"
     "SHELL:-s WASM=1"
-    "SHELL:-s TEXTDECODER=0")
+    "SHELL:-s TEXTDECODER=0"
+    # SINGLE_FILE=1 combined with ENVIRONMENT='web' creates code that works on
+    # both bundlders and Node.
+    "SHELL:-s SINGLE_FILE=1"
+    "SHELL:-s ENVIRONMENT='web'")
 
 link_libraries(embind)
 
@@ -52,9 +56,4 @@ add_library(yogaObjLib OBJECT ${SOURCES})
 
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/binaries)
 
-add_executable(web $<TARGET_OBJECTS:yogaObjLib>)
+add_executable(yoga-wasm-base64-esm $<TARGET_OBJECTS:yogaObjLib>)
-target_link_options(web PRIVATE
-    # SINGLE_FILE=1 combined with ENVIRONMENT='web' creates code that works on
-    # both bundlders and Node.
-    "SHELL:-s SINGLE_FILE=1"
-    "SHELL:-s ENVIRONMENT='web'")

javascript/just.config.cjs

@@ -20,9 +20,9 @@ const {
   tscTask,
 } = require('just-scripts');
 
-const {readFile, writeFile} = require('fs/promises');
+const {existsSync} = require('fs');
+const {readFile, writeFile, rm} = require('fs/promises');
 
-const chalk = require('chalk');
 const glob = require('glob');
 const path = require('path');
 const which = require('which');
@@ -31,39 +31,26 @@ const node = process.execPath;
 
 option('fix');
 
-task('clean', cleanTask({paths: ['build', 'dist']}));
+task('clean', cleanTask({paths: ['.emsdk', 'binaries', 'build']}));
 
-function defineFlavor(flavor, env) {
+task(
-  task(`cmake-build:${flavor}`, cmakeBuildTask({targets: [flavor]}));
+  'build',
-  task(
+  series(installEmsdkTask(), emcmakeGenerateTask(), cmakeBuildTask()),
-    `jest:${flavor}`,
+);
+
+task(
+  'test',
+  series(
+    'build',
     jestTask({
       config: path.join(__dirname, 'jest.config.js'),
       nodeArgs: ['--experimental-vm-modules'],
-      env,
     }),
-  );
-  task(
-    `test:${flavor}`,
-    series(emcmakeGenerateTask(), `cmake-build:${flavor}`, `jest:${flavor}`),
-  );
-}
-
-defineFlavor('web');
-
-task('build', series(emcmakeGenerateTask(), cmakeBuildTask()));
-
-task('test', series(emcmakeGenerateTask(), 'cmake-build:web', 'jest:web'));
-
-task(
-  'benchmark',
-  series(
-    emcmakeGenerateTask(),
-    cmakeBuildTask({targets: ['web']}),
-    runBenchTask(),
   ),
 );
 
+task('benchmark', series('build', runBenchTask()));
+
 task('clang-format', clangFormatTask({fix: argv().fix}));
 
 task('prepack-package-json', async () => {
@@ -133,36 +120,74 @@ function runBenchTask() {
   };
 }
 
-function findExecutable(name, failureMessage) {
+const emsdkVersion = '3.1.28';
-  const exec = which.sync(name, {nothrow: true});
+const emsdkPath = path.join(__dirname, '.emsdk');
-  if (exec) {
+const emsdkBin = path.join(
-    return exec;
+  emsdkPath,
+  process.platform === 'win32' ? 'emsdk.bat' : 'emsdk',
+);
+const emcmakeBin = path.join(
+  emsdkPath,
+  'upstream',
+  'emscripten',
+  process.platform === 'win32' ? 'emcmake.bat' : 'emcmake',
+);
+
+function installEmsdkTask() {
+  return async () => {
+    if (await isEmsdkReadyAndActivated()) {
+      logger.verbose(
+        `emsdk ${emsdkVersion} is already installed and activated`,
+      );
+      return false;
     }
 
-  logger.error(chalk.bold.red(failureMessage));
+    logger.info(`installing emsdk ${emsdkVersion} to ${emsdkPath}`);
-  process.exit(1);
+    await rm(emsdkPath, {recursive: true, force: true});
+
+    await spawn(
+      'git',
+      ['clone', 'https://github.com/emscripten-core/emsdk.git', emsdkPath],
+      {stdio: 'inherit'},
+    );
+
+    await spawn(emsdkBin, ['install', emsdkVersion], {stdio: 'inherit'});
+
+    await spawn(emsdkBin, ['activate', emsdkVersion], {
+      stdio: logger.enableVerbose ? 'inherit' : 'ignore',
+    });
+  };
 }
 
-function tryFindExecutable(name, failureMessage) {
+async function isEmsdkReadyAndActivated() {
-  const exec = which.sync(name, {nothrow: true});
+  if (!existsSync(emcmakeBin)) {
-  if (exec) {
+    return false;
-    return exec;
   }
 
-  logger.warn(chalk.bold.yellow(failureMessage));
+  try {
-  return exec;
+    const emsdkReleases = JSON.parse(
+      await readFile(path.join(emsdkPath, 'emscripten-releases-tags.json')),
+    ).releases;
+
+    const versionHash = emsdkReleases[emsdkVersion];
+    if (!versionHash) {
+      return false;
+    }
+
+    const activatedVersion = await readFile(
+      path.join(emsdkPath, 'upstream', '.emsdk_version'),
+    );
+
+    return activatedVersion.toString().includes(versionHash);
+  } catch {
+    // Something is wrong. Pave and redo.
+    return false;
+  }
 }
 
 function emcmakeGenerateTask() {
   return () => {
-    const ninja = tryFindExecutable(
+    logger.verbose(`emcmake path: ${emcmakeBin}`);
-      'ninja',
-      'Warning: Install Ninja (e.g. "brew install ninja") for faster builds',
-    );
-    const emcmake = findExecutable(
-      'emcmake',
-      'Error: Please install the emscripten SDK: https://emscripten.org/docs/getting_started/',
-    );
 
     const args = [
       'cmake',
@@ -170,20 +195,21 @@ function emcmakeGenerateTask() {
       '.',
       '-B',
       'build',
-      ...(ninja ? ['-G', 'Ninja'] : []),
+      ...(process.platform === 'win32' ? [] : ['-G', 'Ninja']),
     ];
     logger.info(['emcmake', ...args].join(' '));
 
-    return spawn(emcmake, args, {stdio: 'inherit'});
+    return spawn(emcmakeBin, args, {
+      stdio: logger.enableVerbose ? 'inherit' : 'ignore',
+    });
   };
 }
 
 function cmakeBuildTask(opts) {
   return () => {
-    const cmake = findExecutable(
+    const cmake = which.sync('cmake');
-      'cmake',
+    logger.verbose(`cmake path: ${cmake}`);
-      'Error: Please install CMake (e.g. "brew install cmake")',
+
-    );
     const args = [
       '--build',
       'build',

javascript/package.json

@@ -36,11 +36,13 @@
     "@types/jest": "^29.5.1",
     "@types/node": "^16.18.25",
     "@types/which": "^3.0.0",
+    "@yogalayout/cmake-bin": "3.28.0-1",
     "babel-register-esm": "^1.2.5",
     "clang-format": "^1.8.0",
     "glob": "^8.0.3",
     "jest": "^29.3.1",
     "just-scripts": "^2.1.0",
+    "ninja-binaries": "^1.11.1",
     "which": "^3.0.0"
   }
 }

javascript/src/index.ts

@@ -8,7 +8,7 @@
  */
 
 // @ts-ignore untyped from Emscripten
-import loadYoga from '../binaries/web.js';
+import loadYoga from '../binaries/yoga-wasm-base64-esm.js';
 import wrapAssembly from './wrapAssembly.ts';
 
 export type {

yarn.lock

@@ -2901,6 +2901,30 @@
   resolved "https://registry.yarnpkg.com/@xtuc/long/-/long-4.2.2.tgz#d291c6a4e97989b5c61d9acf396ae4fe133a718d"
   integrity sha512-NuHqBY1PB/D8xU6s/thBgOAiAP7HOYDQ32+BFZILJ8ivkUkAHQnWfn6WhL79Owj1qmUnoN/YPhktdIoucipkAQ==
 
+"@yogalayout/cmake-bin-darwin-universal@3.28.0":
+  version "3.28.0"
+  resolved "https://registry.yarnpkg.com/@yogalayout/cmake-bin-darwin-universal/-/cmake-bin-darwin-universal-3.28.0.tgz#727e10d62ae4fca960e3502465b68f948841dd6c"
+  integrity sha512-grgtVOaJZT5fCvCaLVbYmVKqsBqtphQffG6WTjDCdyJ++giM4AvrhiRgFKnyr4rx3pj42DrWTvpIWJJl2nBc6w==
+
+"@yogalayout/cmake-bin-linux-x64@3.28.0":
+  version "3.28.0"
+  resolved "https://registry.yarnpkg.com/@yogalayout/cmake-bin-linux-x64/-/cmake-bin-linux-x64-3.28.0.tgz#9bbd414a24a1264a6b8b824c6eb582d623d4ae8e"
+  integrity sha512-RQlsWl1si7+yi87NI2tV13Ca7RYxhjw1AmoULLwhPNkNSLu9Laja2IFvjgvz6iJ3zD9fWSMUl5TwA/ugiNj7OQ==
+
+"@yogalayout/cmake-bin-windows-x64@3.28.0":
+  version "3.28.0"
+  resolved "https://registry.yarnpkg.com/@yogalayout/cmake-bin-windows-x64/-/cmake-bin-windows-x64-3.28.0.tgz#c60787a7148d54fe0d579dcb4fd80d1f7aef56ed"
+  integrity sha512-wMWwUbw/NkXynVRcrFElbFJD/p9HQHmScuv9amZAKMM/JhLjrxDQaivQ+7ZmEOlRQ1uWZjiue9QCkaJERt9Bog==
+
+"@yogalayout/cmake-bin@3.28.0-1":
+  version "3.28.0-1"
+  resolved "https://registry.yarnpkg.com/@yogalayout/cmake-bin/-/cmake-bin-3.28.0-1.tgz#af366eb6205ec07c1ede2bcec668a2be083869b9"
+  integrity sha512-2bnXhH4qt+bxjm+fgkjTHYhvB2quaS874XkYmUL1Obo6S0kWtDXEp7s0ZgtKvOfW3+y4Q5eomNMIobOeGLi9rw==
+  optionalDependencies:
+    "@yogalayout/cmake-bin-darwin-universal" "3.28.0"
+    "@yogalayout/cmake-bin-linux-x64" "3.28.0"
+    "@yogalayout/cmake-bin-windows-x64" "3.28.0"
+
 accepts@~1.3.4, accepts@~1.3.5, accepts@~1.3.8:
   version "1.3.8"
   resolved "https://registry.yarnpkg.com/accepts/-/accepts-1.3.8.tgz#0bf0be125b67014adcb0b0921e62db7bffe16b2e"
@@ -7823,6 +7847,11 @@ next-tick@^1.1.0:
   resolved "https://registry.yarnpkg.com/next-tick/-/next-tick-1.1.0.tgz#1836ee30ad56d67ef281b22bd199f709449b35eb"
   integrity sha512-CXdUiJembsNjuToQvxayPZF9Vqht7hewsvy2sOWafLvi2awflj9mOC6bHIg50orX8IJvWKY9wYQ/zB2kogPslQ==
 
+ninja-binaries@^1.11.1:
+  version "1.11.1"
+  resolved "https://registry.yarnpkg.com/ninja-binaries/-/ninja-binaries-1.11.1.tgz#9089191512ab44f990b1ee03792b47f79aedeaaa"
+  integrity sha512-/fjozfApkgrHe2IGbSMhwiDYdz0AUpvsm1szWWu9cy4NJmwPDuhd4mvfFMlCp35CPexHim3jSWn1BjHddxFkkA==
+
 no-case@^3.0.4:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/no-case/-/no-case-3.0.4.tgz#d361fd5c9800f558551a8369fc0dcd4662b6124d"