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## Flagger
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### Instructions
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Create a function named `flags` that receives an object and returns the specific aliases and descriptions from the properties of that object.
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The `help` flag:
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- Must be present in the **output** by default.
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- When not present in the input, it should return the description of all flags.
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- When present in the input, it specifies the descriptions of the flags that are passed to `help`. (ex: `help: ['divide']`)
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#### Example:
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```js
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{
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multiply: 'multiply the values',
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divide: 'divides the values',
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help: ['divide']
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}
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```
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and outputs :
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```js
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{
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alias: { h: 'help', m: 'multiply', d: 'divide'}
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description: '-d, --divide: divides the values',
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}
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```
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