Add module.hot.status

Author: Ives van Hoorne

packages/app/src/sandbox/eval/manager.js

@@ -76,6 +76,7 @@ export default class Manager {
   dependencies: Object;
   webpackHMR: boolean = false;
   hardReload: boolean = false;
+  hmrStatus: 'idle' | 'check' | 'apply' | 'fail' = 'idle';
 
   // List of modules that are being transpiled, to prevent duplicate jobs.
   transpileJobs: { [transpiledModuleId: string]: true };
@@ -143,6 +144,8 @@ export default class Manager {
       return;
     }
 
+    this.hmrStatus = 'apply';
+
     // Evaluate the *changed* HMR modules first
     this.getTranspiledModules()
       .filter(t => t.hmrConfig && t.hmrConfig.isDirty())
@@ -155,6 +158,8 @@ export default class Manager {
     // Run post evaluate
     this.getTranspiledModules().forEach(t => t.postEvaluate(this));
 
+    this.hmrStatus = 'idle';
+
     return exports;
   }
 
@@ -266,6 +271,7 @@ export default class Manager {
    * @param {*} entry
    */
   async transpileModules(entry: Module) {
+    this.hmrStatus = 'check';
     this.setEnvironmentVariables();
     const transpiledModule = this.getTranspiledModule(entry);
 
@@ -546,6 +552,7 @@ export default class Manager {
    * continuing
    */
   markHardReload() {
+    this.hmrStatus = 'fail';
     this.hardReload = true;
   }
 

packages/app/src/sandbox/eval/transpiled-module.js

@@ -611,6 +611,7 @@ export default class TranspiledModule {
           this.hmrConfig.setDisposeHandler(cb);
         },
         data: hotData,
+        status: () => manager.hmrStatus,
       },
     };
     this.compilation.hot.data = hotData;