Add Libraries to make the code beautiful

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Experiment out new things. Add prettier to make the code clean and helpful for the users to read.

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Try adding tslint if not present already and enforce the rules by it to get the full benefit of TypeScript

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You can also add codelyzer and tslint-angular in order to ensure Type checking.

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Once you have added all these things, you can add corresponding VSCode plugins in order to make your code easier.