@gvray/eskit/lib/isNumber.d.ts

A rich and colorful toolkit about typescript and javascript.

/**
 * Checks if a value is a number (including NaN and Infinity).
 * 检查值是否为数字（包括NaN和Infinity）。
 *
 * @param value - The value to check / 要检查的值
 * @returns True if the value is a number / 如果值是数字则返回true
 *
 * @example
 * ```typescript
 * isNumber(42) // true
 * isNumber(3.14) // true
 * isNumber(NaN) // true (NaN is type 'number')
 * isNumber(Infinity) // true
 * isNumber(-Infinity) // true
 * isNumber('42') // false
 * isNumber(null) // false
 * isNumber(undefined) // false
 * isNumber([]) // false
 * isNumber({}) // false
 * ```
 *
 * @since 1.0.0
 */
declare const isNumber: (value: unknown) => value is number;
export default isNumber;
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