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xing · Mar 1, 2021 · f81cb4a · f81cb4a
1 parent e1aadbd
commit f81cb4a
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Showing 6 changed files with 113 additions and 8 deletions.
diff --git a/packages/react/import-component/mixin.core.js b/packages/react/import-component/mixin.core.js
@@ -2,10 +2,10 @@ const { Mixin } = require('hops-mixin');
 
 class ImportComponentCoreMixin extends Mixin {
   configureBuild(webpackConfig, { jsLoaderConfig }) {
-    jsLoaderConfig.options.plugins.push([
-      require.resolve('../lib/babel'),
-      { module: 'hops' },
-    ]);
+    // jsLoaderConfig.options.plugins.push([
+    //   require.resolve('../lib/babel'),
+    //   { module: 'hops' },
+    // ]);
   }
 }
 

diff --git a/packages/template-react/src/app.js b/packages/template-react/src/app.js
@@ -1,8 +1,9 @@
-import { Miss, render } from 'hops';
+import { importComponent, Miss, render } from 'hops';
 import React from 'react';
 import { Link, Route, Switch } from 'react-router-dom';
-import Counter from './counter';
-import Home from './home';
+
+const Home = importComponent(() => import('./home'));
+const Counter = importComponent(() => import('./counter'));
 
 const App = () => (
   <div>

diff --git a/packages/webpack/lib/configs/build.js b/packages/webpack/lib/configs/build.js
@@ -8,6 +8,7 @@ const {
 const TerserPlugin = require('terser-webpack-plugin');
 const { join, trimSlashes } = require('pathifist');
 const getModules = require('../utils/modules');
+const ImportComponentPlugin = require('../plugins/import-component');
 
 const { ModuleConcatenationPlugin } = optimize;
 
@@ -138,6 +139,7 @@ module.exports = function getConfig(config, name) {
       new (isProduction ? HashedModuleIdsPlugin : NamedModulesPlugin)(),
       new ModuleConcatenationPlugin(),
       new EnvironmentPlugin({ NODE_ENV: 'development' }),
+      new ImportComponentPlugin(),
     ],
     performance: {
       hints: false,

diff --git a/packages/webpack/lib/plugins/import-component.js b/packages/webpack/lib/plugins/import-component.js
@@ -0,0 +1,94 @@
+const BasicEvaluatedExpression = require('webpack/lib/BasicEvaluatedExpression');
+const Dependency = require('webpack/lib/Dependency');
+const { builders } = require('ast-types');
+
+/** @typedef {import('webpack').Compiler} Compiler */
+/** @typedef {import('webpack').javascript['JavascriptParser']} JavascriptParser */
+
+class ImportComponentDependency extends Dependency {
+  constructor(range) {
+    super();
+    this.range = range;
+  }
+
+  updateHash(hash) {
+    hash.update('ImportComponentDependency');
+  }
+}
+
+ImportComponentDependency.Template = class ImportComponentDependencyTemplate {
+  apply(dep, source, runtime) {
+    console.log({ dep, source, runtime });
+    // const moduleId = runtime.moduleId({
+    //   module: dep._module,
+    //   request: dep._request,
+    // });
+    source.replace(
+      dep.range[0],
+      dep.range[1],
+      'importComponent({ load() {} })'
+    );
+  }
+};
+
+module.exports = class ImportComponentPlugin {
+  apply(/** @type {Compiler} */ compiler) {
+    const pluginName = this.constructor.name;
+
+    compiler.hooks.compilation.tap(pluginName, (compilation) => {
+      compilation.dependencyTemplates.set(
+        ImportComponentDependency,
+        new ImportComponentDependency.Template()
+      );
+    });
+
+    compiler.hooks.normalModuleFactory.tap(pluginName, (factory) => {
+      factory.hooks.parser.for('javascript/auto').tap(pluginName, (
+        /** @type {InstanceType<JavascriptParser>} */ parser
+      ) => {
+        parser.hooks.evaluate
+          .for('Identifier')
+          .tap({ name: pluginName, before: 'Parser' }, (node) => {
+            if (node.name === 'importComponent') {
+              console.log(node);
+              const expression = new BasicEvaluatedExpression();
+              expression.setRange(node.range);
+              expression.setExpression(node);
+              expression.setIdentifier(node.name);
+
+              return expression;
+            }
+          });
+
+        parser.hooks.evaluateIdentifier
+          .for('imported var')
+          .tap({ name: pluginName, before: 'Parser' }, (node) => {
+            if (node.name === 'importComponent') {
+              const expression = new BasicEvaluatedExpression();
+              expression.setRange(node.range);
+              expression.setExpression(node);
+              expression.setIdentifier(node.name);
+
+              return expression;
+            }
+          });
+
+        parser.hooks.call
+          .for('importComponent')
+          .tap({ name: pluginName, before: 'Parser' }, (node) => {
+            if (node.type === 'CallExpression') {
+              parser.state.module.addDependency(
+                new ImportComponentDependency(node.range)
+              );
+              // node.arguments[0] = builders.objectExpression([
+              //   builders.objectProperty(
+              //     builders.identifier('load'),
+              //     builders.stringLiteral('testhelloworld')
+              //   ),
+              // ]);
+            }
+          });
+      });
+    });
+  }
+};
diff --git a/packages/webpack/package.json b/packages/webpack/package.json
@@ -8,6 +8,7 @@
     "@babel/core": "^7.9.0",
     "@babel/preset-env": "^7.9.5",
     "babel-loader": "^8.1.0",
+    "ast-types": "^0.14.2",
     "caniuse-lite": "^1.0.30000898",
     "chalk": "^4.0.0",
     "core-js": "^3.2.1",

diff --git a/yarn.lock b/yarn.lock
@@ -3696,6 +3696,13 @@ assign-symbols@^1.0.0:
   resolved "https://registry.yarnpkg.com/assign-symbols/-/assign-symbols-1.0.0.tgz#59667f41fadd4f20ccbc2bb96b8d4f7f78ec0367"
   integrity sha1-WWZ/QfrdTyDMvCu5a41Pf3jsA2c=
 
+ast-types@^0.14.2:
+  version "0.14.2"
+  resolved "https://registry.yarnpkg.com/ast-types/-/ast-types-0.14.2.tgz#600b882df8583e3cd4f2df5fa20fa83759d4bdfd"
+  integrity sha512-O0yuUDnZeQDL+ncNGlJ78BiO4jnYI3bvMsD5prT0/nsgijG/LpNBIr63gTjVTNsiGkgQhiyCShTgxt8oXOrklA==
+  dependencies:
+    tslib "^2.0.1"
+
 astral-regex@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/astral-regex/-/astral-regex-2.0.0.tgz#483143c567aeed4785759c0865786dc77d7d2e31"
@@ -13465,7 +13472,7 @@ tslib@^1.10.0, tslib@^1.9.0, tslib@^1.9.3:
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.14.1.tgz#cf2d38bdc34a134bcaf1091c41f6619e2f672d00"
   integrity sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg==
 
-tslib@^2.0.3, tslib@~2.1.0:
+tslib@^2.0.1, tslib@^2.0.3, tslib@~2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.1.0.tgz#da60860f1c2ecaa5703ab7d39bc05b6bf988b97a"
   integrity sha512-hcVC3wYEziELGGmEEXue7D75zbwIIVUMWAVbHItGPx0ziyXxrOMQx4rQEVEV45Ut/1IotuEvwqPopzIOkDMf0A==