Method manipulateFile

src/main/base/FileSystem.ts:196–204

(filePath: string, callback: Function)

    }

    manipulateFile(filePath: string, callback: Function): FileSystem {
        let fileContent = this.readFile(filePath)

        if(callback) {
            fileContent = callback(fileContent)
        }
        
        return this.writeFile(filePath, fileContent)
    }

    readFileIfExists(filePath: string): string {
        if(!this.fileExists(filePath)) return null