Function indexOf

indexOf<T>(array, value, fromIndex?): number
Gets the index at which the first occurrence of value is found in array using SameValueZero for equality comparisons. If fromIndex is negative, it's used as the offset from the end of array.
Type Parameters
- T
Parameters
- array: undefined | null | List<T>
  The array to search.
- value: T
  The value to search for.
- Optional fromIndex: number
  The index to search from.
Returns number
Returns the index of the matched value, else -1.
Example
```
_.indexOf([1, 2, 1, 2], 2);
// => 1

// using `fromIndex`
_.indexOf([1, 2, 1, 2], 2, 2);
// => 3
```
- Defined in node_modules/@types/lodash/common/array.d.ts:630

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