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by Endre
03:38
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ModuleLoader.loadModule   A

↳ Parent: ModuleLoader

Complexity

Conditions 2

Size

Total Lines 15
Code Lines 14

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 5
CRAP Score 2

Importance

Changes 0
Metric Value
cc 2
eloc 14
dl 0
loc 15
ccs 5
cts 5
cp 1
crap 2
rs 9.7
c 0
b 0
f 0
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import React from 'react';
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import {IObserver} from '../Observer/Observer';
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interface ILoadedModuleDictionary {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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  [name: string]: typeof React.Component,

            


            
                                                                                                            
                            
            
                                    
            
            

                
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}

            


            
                                                                                                            
                            
            
                                    
            
            

                
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export default class ModuleLoader {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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  moduleState: IObserver<typeof React.Component | null>;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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  moduleNameState: IObserver<string>;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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  dictionary: ILoadedModuleDictionary;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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  pathToRoot: string;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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  constructor(

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    pathToRoot: string,

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    moduleNameState: IObserver<string>,

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    moduleState: IObserver<typeof React.Component | null>

            


            
                                                                                                            
                            
            
                                    
            
            

                
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  ) {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    this.moduleNameState = moduleNameState;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    this.moduleState = moduleState;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    this.dictionary = {};

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    this.pathToRoot = pathToRoot;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    this.moduleNameState.adapter.onChange = this.loadModule.bind(this);

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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  }

            


            
                                                        
            
                                    
            
            

                
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  async loadModule(oldValue: string, newValue: string) {

            


            
                                                        
            
                                    
            
            

                
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    let module: typeof React.Component;

            


            
                                                        
            
                                    
            
            

                
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    if (!this.dictionary.hasOwnProperty(newValue)) {

            


            
                                                        
            
                                    
            
            

                
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      module =

            


            
                                                        
            
                                    
            
            

                
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        (

            


            
                                                        
            
                                    
            
            

                
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          await import(this.pathToRoot + newValue + '.js')

            


            
                                                        
            
                                    
            
            

                
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        ).default as typeof React.Component;

            


            
                                                        
            
                                    
            
            

                
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      this.dictionary[newValue] = module;

            


            
                                                        
            
                                    
            
            

                
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    } else {

            


            
                                                        
            
                                    
            
            

                
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      module = this.dictionary[newValue];

            


            
                                                        
            
                                    
            
            

                
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    }

            


            
                                                        
            
                                    
            
            

                
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    this.moduleState.value = module;

            


            
                                                        
            
                                    
            
            

                
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  }

            


            
                                                        
            
                                    
            
            

                
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}