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Pull Request — master (#41)
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04:25
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config.ts ➔ merge   A

↳ Parent: Project

Complexity

Conditions 3

Size

Total Lines 13
Code Lines 7

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 3
eloc 7
dl 0
loc 13
rs 10
c 0
b 0
f 0
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/**
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 * Return object which is a shallow merge of 'target' and 'source'. Written manually bacause:
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 * - {...target, ...source} does not work with generic types (https://github.com/Microsoft/TypeScript/issues/22687)
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 * - Object.assign does not work in IE <= 11
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 */
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function merge<T extends {}, U extends {}>(target: T, source: U): T & U {
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    const newObj = Object.create(target);
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    for (const key in source) {
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        if (source.hasOwnProperty(key)) {
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            newObj[key] = source[key];
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        }
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    }
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    return newObj;
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}
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/**

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * Simple config class that allows to retrieve and overwrite application config set by environment in window.__config__

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 */

            


            
                                                                                                            
                            
            
                                    
            
            

                
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export class AppConfig<T extends {}> {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    private config: T;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    public constructor() {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        // @ts-ignore

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        this.config = window['__config__'] || {};

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    public get<K extends keyof T>(key: K): T[K] {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        return this.config[key];

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    public set(setConfig: Partial<T>): void {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        this.config = merge(this.config, setConfig);

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                            
            
                                    
            
            

                
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}

            


            
                                                                                                            
                            
            
                                    
            
            

                
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export const config = new AppConfig<{

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    BASE_PATH: string;

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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}>();

            


            
                                                        
            
                                    
            
            

                
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