React.lazy()/Suspence pour la page d'accueil

frontend/package-lock.json

@@ -3548,6 +3548,12 @@
         "node-int64": "^0.4.0"
       }
     },
+    "btoa": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/btoa/-/btoa-1.2.1.tgz",
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+      "dev": true
+    },
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       "resolved": "https://registry.npmjs.org/buffer/-/buffer-4.9.2.tgz",
@@ -4547,6 +4553,12 @@
         "domelementtype": "1"
       }
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+    "duplexer": {
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+      "resolved": "https://registry.npmjs.org/duplexer/-/duplexer-0.1.1.tgz",
+      "integrity": "sha1-rOb/gIwc5mtX0ev5eXessCM0z8E=",
+      "dev": true
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@@ -4630,6 +4642,12 @@
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       "dev": true
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+    "ejs": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/ejs/-/ejs-3.0.1.tgz",
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+      "dev": true
+    },
     "electron-to-chromium": {
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@@ -6611,6 +6629,24 @@
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+    "gzip-size": {
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+      "resolved": "https://registry.npmjs.org/gzip-size/-/gzip-size-5.1.1.tgz",
+      "integrity": "sha512-FNHi6mmoHvs1mxZAds4PpdCS6QG8B4C1krxJsMutgxl5t3+GlRTzzI3NEkifXx2pVsOvJdOGSmIgDhQ55FwdPA==",
+      "dev": true,
+      "requires": {
+        "duplexer": "^0.1.1",
+        "pify": "^4.0.1"
+      },
+      "dependencies": {
+        "pify": {
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+          "resolved": "https://registry.npmjs.org/pify/-/pify-4.0.1.tgz",
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+          "dev": true
+        }
+      }
+    },
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@@ -7398,6 +7434,12 @@
         }
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+    "is-docker": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/is-docker/-/is-docker-2.0.0.tgz",
+      "integrity": "sha512-pJEdRugimx4fBMra5z2/5iRdZ63OhYV0vr0Dwm5+xtW4D1FvRkB8hamMIhnWfyJeDdyr/aa7BDyNbtG38VxgoQ==",
+      "dev": true
+    },
     "is-extendable": {
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       "resolved": "https://registry.npmjs.org/is-extendable/-/is-extendable-0.1.1.tgz",
@@ -9786,6 +9828,24 @@
         "mimic-fn": "^2.1.0"
       }
     },
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+      "version": "7.0.3",
+      "resolved": "https://registry.npmjs.org/open/-/open-7.0.3.tgz",
+      "integrity": "sha512-sP2ru2v0P290WFfv49Ap8MF6PkzGNnGlAwHweB4WR4mr5d2d0woiCluUeJ218w7/+PmoBy9JmYgD5A4mLcWOFA==",
+      "dev": true,
+      "requires": {
+        "is-docker": "^2.0.0",
+        "is-wsl": "^2.1.1"
+      },
+      "dependencies": {
+        "is-wsl": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/is-wsl/-/is-wsl-2.1.1.tgz",
+          "integrity": "sha512-umZHcSrwlDHo2TGMXv0DZ8dIUGunZ2Iv68YZnrmCiBPkZ4aaOhtv7pXJKeki9k3qJ3RJr0cDyitcl5wEH3AYog==",
+          "dev": true
+        }
+      }
+    },
     "opn": {
       "version": "5.5.0",
       "resolved": "https://registry.npmjs.org/opn/-/opn-5.5.0.tgz",
@@ -11772,6 +11832,216 @@
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       "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w="
     },
+    "source-map-explorer": {
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/source-map-explorer/-/source-map-explorer-2.3.1.tgz",
+      "integrity": "sha512-l3WQUCwaqia5x7EBnNp4GYwhXnROMz3NqKM2QMwQ3ADgjekp+enP+PHkjjbjoVX6WJ2G5mbvM6TjeE/q7fnIFw==",
+      "dev": true,
+      "requires": {
+        "btoa": "^1.2.1",
+        "chalk": "^3.0.0",
+        "convert-source-map": "^1.7.0",
+        "ejs": "^3.0.1",
+        "escape-html": "^1.0.3",
+        "glob": "^7.1.6",
+        "gzip-size": "^5.1.1",
+        "lodash": "^4.17.15",
+        "open": "^7.0.2",
+        "source-map": "^0.7.3",
+        "temp": "^0.9.1",
+        "yargs": "^15.1.0"
+      },
+      "dependencies": {
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+          "dev": true
+        },
+        "ansi-styles": {
+          "version": "4.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.2.1.tgz",
+          "integrity": "sha512-9VGjrMsG1vePxcSweQsN20KY/c4zN0h9fLjqAbwbPfahM3t+NL+M9HC8xeXG2I8pX5NoamTGNuomEUFI7fcUjA==",
+          "dev": true,
+          "requires": {
+            "@types/color-name": "^1.1.1",
+            "color-convert": "^2.0.1"
+          }
+        },
+        "chalk": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-3.0.0.tgz",
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+          "dev": true,
+          "requires": {
+            "ansi-styles": "^4.1.0",
+            "supports-color": "^7.1.0"
+          }
+        },
+        "cliui": {
+          "version": "6.0.0",
+          "resolved": "https://registry.npmjs.org/cliui/-/cliui-6.0.0.tgz",
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+          "dev": true,
+          "requires": {
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+            "strip-ansi": "^6.0.0",
+            "wrap-ansi": "^6.2.0"
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+          "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
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+          "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-6.2.0.tgz",
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+        "yargs": {
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+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-15.3.0.tgz",
+          "integrity": "sha512-g/QCnmjgOl1YJjGsnUg2SatC7NUYEiLXJqxNOQU9qSpjzGtGXda9b+OKccr1kLTy8BN9yqEyqfq5lxlwdc13TA==",
+          "dev": true,
+          "requires": {
+            "cliui": "^6.0.0",
+            "decamelize": "^1.2.0",
+            "find-up": "^4.1.0",
+            "get-caller-file": "^2.0.1",
+            "require-directory": "^2.1.1",
+            "require-main-filename": "^2.0.0",
+            "set-blocking": "^2.0.0",
+            "string-width": "^4.2.0",
+            "which-module": "^2.0.0",
+            "y18n": "^4.0.0",
+            "yargs-parser": "^18.1.0"
+          }
+        },
+        "yargs-parser": {
+          "version": "18.1.0",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-18.1.0.tgz",
+          "integrity": "sha512-o/Jr6JBOv6Yx3pL+5naWSoIA2jJ+ZkMYQG/ie9qFbukBe4uzmBatlXFOiu/tNKRWEtyf+n5w7jc/O16ufqOTdQ==",
+          "dev": true,
+          "requires": {
+            "camelcase": "^5.0.0",
+            "decamelize": "^1.2.0"
+          }
+        }
+      }
+    },
     "source-map-resolve": {
       "version": "0.5.3",
       "resolved": "https://registry.npmjs.org/source-map-resolve/-/source-map-resolve-0.5.3.tgz",
@@ -12342,6 +12612,26 @@
       "resolved": "https://registry.npmjs.org/tapable/-/tapable-1.1.1.tgz",
       "integrity": "sha512-9I2ydhj8Z9veORCw5PRm4u9uebCn0mcCa6scWoNcbZ6dAtoo2618u9UUzxgmsCOreJpqDDuv61LvwofW7hLcBA=="
     },
+    "temp": {
+      "version": "0.9.1",
+      "resolved": "https://registry.npmjs.org/temp/-/temp-0.9.1.tgz",
+      "integrity": "sha512-WMuOgiua1xb5R56lE0eH6ivpVmg/lq2OHm4+LtT/xtEtPQ+sz6N3bBM6WZ5FvO1lO4IKIOb43qnhoc4qxP5OeA==",
+      "dev": true,
+      "requires": {
+        "rimraf": "~2.6.2"
+      },
+      "dependencies": {
+        "rimraf": {
+          "version": "2.6.3",
+          "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.3.tgz",
+          "integrity": "sha512-mwqeW5XsA2qAejG46gYdENaxXjx9onRNCfn7L0duuP4hCuTIi/QO7PDK07KJfp1d+izWPrzEJDcSqBa0OZQriA==",
+          "dev": true,
+          "requires": {
+            "glob": "^7.1.3"
+          }
+        }
+      }
+    },
     "terser": {
       "version": "4.6.3",
       "resolved": "https://registry.npmjs.org/terser/-/terser-4.6.3.tgz",

frontend/package.json

@@ -59,6 +59,7 @@
     "eslint-plugin-react": "^7.19.0",
     "jest": "^24.9.0",
     "react-test-renderer": "^16.13.0",
+    "source-map-explorer": "^2.3.1",
     "webpack-dev-server": "^3.10.3"
   }
 }

frontend/src/app.js

@@ -1,8 +1,7 @@
-import { Component, Fragment } from 'react';
+import React, { Component, Fragment } from 'react';
 import { hot } from 'react-hot-loader';
 import { HashRouter } from 'react-router-dom'; // ou BrowserRouter
 import { Route, Switch, Redirect } from 'react-router';
-import { ConnectedHomePage as HomePage } from './pages/home';
 import { ConnectedLoginPage as LoginPage } from './pages/login';
 import DashBoardClient from './pages/DashBoardClient';
 import DashBoardDev from './pages/DashBoardDev';
@@ -10,20 +9,24 @@ import { ConnectedLogoutPage as LogoutPage } from './pages/logout';
 import { connect } from 'react-redux';
 import { history } from './util/history';
 
+const LazyHomePage = React.lazy(() => import('./pages/home.lazy'));
+
 export class App extends Component {
     render () {
         return (
             <Fragment>
+                <React.Suspense fallback={<div>Chargement en cours...</div>}>
                     <HashRouter history={history}>
                         <Switch>
                             <Route path='/login' exact component={LoginPage} />
                             <Route path='/logout' exact component={LogoutPage} />
-                        <Route path='/home' exact component={HomePage} />
+                            <Route path='/home' exact component={LazyHomePage} />
                             <Route path='/dashboard-client' exact component={DashBoardClient} />
                             <Route path='/dashboard-dev' exact component={DashBoardDev} />
                             <Route component={() => <Redirect to="/home" />} />
                         </Switch>
                     </HashRouter>
+                </React.Suspense>
             </Fragment>
         );
     }

frontend/src/pages/home.lazy.js

@@ -0,0 +1 @@
+export { ConnectedHomePage as default } from './home';