generate-fibonacci-sequence

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JavaScript

Write a generator function that returns a generator object which yields the&nbsp;fibonacci sequence.

The&nbsp;fibonacci sequence&nbsp;is defined by the relation <code>Xn&nbsp;= Xn-1&nbsp;+ Xn-2</code>.

The first few numbers&nbsp;of the series are <code>0, 1, 1, 2, 3, 5, 8, 13</code>.

&nbsp;
Example 1:

<pre>
Input: callCount = 5
Output: [0,1,1,2,3]
Explanation:
const gen = fibGenerator();
gen.next().value; // 0
gen.next().value; // 1
gen.next().value; // 1
gen.next().value; // 2
gen.next().value; // 3
</pre>

Example 2:

<pre>
Input: callCount = 0
Output: []
Explanation: gen.next() is never called so nothing is outputted
</pre>

&nbsp;
Constraints:

<ul>
	<li><code>0 &lt;= callCount &lt;= 50</code></li>
</ul>