57 lines
1.6 KiB
JavaScript
57 lines
1.6 KiB
JavaScript
const Base = require('./base.js')
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const util = require('util')
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class TypeArray extends Base {
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constructor () {
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super()
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this._type = 'object'
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this._empty = false
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this._min = null
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this._max = null
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}
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/**
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* set allow empty
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*/
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empty () {
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this._empty = true
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return this
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}
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/**
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* set min length
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* @param {number} num
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*/
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min (num) {
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if (!isFinite(num) || num === true || num === false) throw new Error('input wrong')
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if (this._max !== null && this._max <= num) throw new Error(`num >= ${this._max}`)
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if (num < 0) throw new Error('array length must >= 0')
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this._min = parseFloat(num)
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return this
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}
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/**
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* set max length
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* @param {number} num
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*/
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max (num) {
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if (!isFinite(num) || num === true || num === false) throw new Error('input wrong')
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if (this._min !== null && this._min >= num) throw new Error(`num <= ${this._min}`)
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this._max = parseFloat(num)
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return this
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}
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validate (value) {
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if (value === undefined && this._required) return `required`
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if (value === undefined) return null
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/* eslint-disable-next-line */
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if (typeof value !== this._type) return `${util.inspect(value, false, null)} type not array`
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if (!Array.isArray(value)) return `${util.inspect(value, false, null)} type not array`
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if (!this._empty && value.length === 0) return `not allow empty`
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if (this._min !== null && value.length < this._min) return `value length < ${this._min}`
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if (this._max !== null && value.length > this._max) return `value length > ${this._max}`
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return null
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}
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}
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module.exports = TypeArray
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