bootstrap-vue-3/src/utils/inspect.ts

Early (but lovely) implementation of Vue 3, Bootstrap 5 and Typescript

/* eslint-disable @typescript-eslint/explicit-module-boundary-types */
// Quick object check
// This is primarily used to tell Objects from primitive values
// when we know the value is a JSON-compliant type
// Note object could be a complex type like array, Date, etc.
const RX_NUMBER = /^[0-9]*\.?[0-9]+$/
export const isBoolean = (value: any) => toType(value) === 'boolean'

export const isObject = (obj: any): boolean => obj !== null && typeof obj === 'object'
export const isString = (value: any): boolean => typeof value === 'string'

export const isUndefined = (value: any) => value === undefined

export const isNull = (value: any) => value === null

export const isUndefinedOrNull = (value: any) => isUndefined(value) || isNull(value)
export const isNumeric = (value: any) => RX_NUMBER.test(String(value))
export const isNumber = (value: any) => typeof value === 'number'

export const toType = (value: any) => typeof value
export const isFunction = (value: any) => toType(value) === 'function'

// Strict object type check
// Only returns true for plain JavaScript objects
export const isPlainObject = (obj: any) => Object.prototype.toString.call(obj) === '[object Object]'
export const isArray = (value: any) => Array.isArray(value)