space-lift/es/is.js

TypeScript Array, Object, Map, Set, Union, Enum utils

/** Returns whether an object is an Array */
export const array = Array.isArray;
/** Returns whether this object is neither null or undefined */
export function defined(obj) {
    return obj !== null && obj !== undefined;
}
/** Returns whether this object is a function */
export function func(obj) {
    return typeof obj === 'function';
}
/** Returns whether this object is a string */
export function string(obj) {
    return typeof obj === 'string';
}
/** Returns whether this object is a number */
export function number(obj) {
    return typeof obj === 'number';
}
/** Returns whether this object is a boolean */
export function boolean(obj) {
    return typeof obj === 'boolean';
}
/** Returns whether this value is a plain object */
export function object(obj) {
    return Object.getPrototypeOf(obj) === Object.prototype;
}