Function isNumber

Alias

isNumber(value?): value is number
Checks if a given value is a number.

This function can also serve as a type predicate in TypeScript, narrowing the type of the argument to number.
Parameters
- Optionalvalue: unknown
  The value to check if it is a number.
Returns value is number
Returns true if value is a number, else false.
Example
```
const value1 = 123;
const value2 = 'abc';
const value3 = true;

console.log(isNumber(value1)); // true
console.log(isNumber(value2)); // false
console.log(isNumber(value3)); // false
```
- Defined in src/predicates.ts:271