feat(cli): init module federation of build script

packages/build/webpack.config.js

@@ -1,5 +1,6 @@
 const path = require('path');
-const { dependencies, devDependencies } = require('./package.json');
+const { ModuleFederationPlugin } = require('webpack').container;
+const { dependencies } = require('./package.json');
 
 module.exports = {
   entry: './src/index.js',
@@ -11,7 +12,7 @@ module.exports = {
   mode: 'production',
   target: 'node',
   node: false,
-  externals: Object.keys({ ...dependencies, ...devDependencies }),
+  externals: ['fs', 'path', 'fsevents'],
   module: {
     rules: [
       {
@@ -35,4 +36,15 @@ module.exports = {
       },
     ],
   },
+  plugins: [
+    new ModuleFederationPlugin({
+      name: 'build',
+      library: { type: 'commonjs' },
+      filename: 'remoteEntry.js',
+      exposes: {
+        './build': './src/index.js',
+      },
+      shared: dependencies,
+    }),
+  ],
 };

packages/cli/src/commands/build/build.js

@@ -15,10 +15,10 @@
 */
 
 import path from 'path';
-import buildScript from '@lowdefy/build';
-import createPrint from '../../utils/print';
+import getBuildScript from './getBuildScript';
 import getLowdefyVersion from '../../utils/getLowdefyVersion';
 import errorBoundary from '../../utils/errorBoundary';
+import createPrint from '../../utils/print';
 
 async function build(program) {
   let baseDirectory = process.cwd();
@@ -26,7 +26,7 @@ async function build(program) {
     baseDirectory = path.resolve(program.baseDirectory);
   }
   const version = await getLowdefyVersion(program.baseDirectory);
-  console.log(version);
+  const buildScript = await getBuildScript(version);
 
   buildScript({
     logger: createPrint({ timestamp: true }),

packages/cli/src/commands/build/getBuildScript.js

@@ -0,0 +1,32 @@
+/*
+  Copyright 2020 Lowdefy, Inc
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+*/
+
+import fs from 'fs';
+import path from 'path';
+import loadModule from '../../utils/loadModule';
+
+async function getBuildScript(version) {
+  let buildScript;
+  const cleanVersion = version.replace(/[-.]/g, '_');
+  const cachePath = path.resolve(process.cwd(), `./.lowdefy/.cache/build/v${cleanVersion}`);
+  if (fs.existsSync(cachePath)) {
+    buildScript = await loadModule(cachePath, './build');
+    return buildScript.default;
+  }
+  return null;
+}
+
+export default getBuildScript;

packages/cli/src/utils/getLowdefyVersion.test.js

@@ -1,3 +1,19 @@
+/*
+  Copyright 2020 Lowdefy, Inc
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+*/
+
 import path from 'path';
 import { readFile } from '@lowdefy/node-utils';
 import getLowdefyVersion from './getLowdefyVersion';

packages/cli/src/utils/loadModule.js

@@ -0,0 +1,45 @@
+/*
+  Copyright 2020 Lowdefy, Inc
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+*/
+
+import path from 'path';
+
+async function loadModule(dir, moduleName, remoteEntry = 'remoteEntry.js') {
+  const importRemote = async (remoteEntryFile) => {
+    if (__webpack_share_scopes__.default) {
+      await __webpack_init_sharing__('default');
+    }
+
+    return new Promise((remoteResolve) => {
+      const container = __non_webpack_require__(remoteEntryFile);
+      const initContainer = new Promise((containerResolve) => {
+        if (__webpack_share_scopes__.default) {
+          containerResolve(container.init(__webpack_share_scopes__.default));
+        } else {
+          containerResolve();
+        }
+      });
+      initContainer.then(() => {
+        remoteResolve(container);
+      });
+    });
+  };
+
+  const container = await importRemote(path.resolve(`${dir}/${remoteEntry}`));
+
+  return container.get(moduleName).then((factory) => factory());
+}
+
+export default loadModule;

packages/cli/webpack.config.js

@@ -1,5 +1,6 @@
 const path = require('path');
 const webpack = require('webpack');
+const { ModuleFederationPlugin } = require('webpack').container;
 const { dependencies, devDependencies } = require('./package.json');
 
 module.exports = {
@@ -36,5 +37,14 @@ module.exports = {
       },
     ],
   },
-  plugins: [new webpack.BannerPlugin({ banner: '#!/usr/bin/env node', raw: true })],
+  plugins: [
+    new webpack.BannerPlugin({ banner: '#!/usr/bin/env node', raw: true }),
+    new ModuleFederationPlugin({
+      name: 'cli',
+      filename: 'remoteEntry.js',
+      remotes: {},
+      exposes: {},
+      shared: dependencies,
+    }),
+  ],
 };