/* eslint-disable no-nested-ternary */
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/* eslint-disable no-restricted-syntax */
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/* eslint-disable guard-for-in */
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/**
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* num 小于0，左缩进num*2个空格； 大于0，右缩进num*2个空格。
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* @param {string} str 代码
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* @param {number} num 缩进次数
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* @param {number} len 【可选】缩进单位，空格数
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*/
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export function indent(str, num, len = 2) {
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if (num === 0) return str
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const isLeft = num < 0; const result = []; let reg; let
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spaces = ''
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if (isLeft) {
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num *= -1
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reg = new RegExp(`(^\\s{0,${num * len}})`, 'g')
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} else {
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for (let i = 0; i < num * len; i++) spaces += ' '
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}
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str.split('\n').forEach(line => {
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line = isLeft ? line.replace(reg, '') : spaces + line
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result.push(line)
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})
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return result.join('\n')
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}
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// 首字母大小
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export function titleCase(str) {
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return str.replace(/( |^)[a-z]/g, L => L.toUpperCase())
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}
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// 下划转驼峰
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export function camelCase(str) {
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return str.replace(/-[a-z]/g, str1 => str1.substr(-1).toUpperCase())
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}
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export function isNumberStr(str) {
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return /^[+-]?(0|([1-9]\d*))(\.\d+)?$/g.test(str)
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}
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export const exportDefault = 'export default '
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export const beautifierConf = {
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html: {
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indent_size: '2',
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indent_char: ' ',
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max_preserve_newlines: '-1',
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preserve_newlines: false,
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keep_array_indentation: false,
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break_chained_methods: false,
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indent_scripts: 'separate',
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brace_style: 'end-expand',
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space_before_conditional: true,
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unescape_strings: false,
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jslint_happy: false,
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end_with_newline: true,
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wrap_line_length: '110',
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indent_inner_html: true,
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comma_first: false,
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e4x: true,
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indent_empty_lines: true
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},
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js: {
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indent_size: '2',
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indent_char: ' ',
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max_preserve_newlines: '-1',
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preserve_newlines: false,
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keep_array_indentation: false,
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break_chained_methods: false,
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indent_scripts: 'normal',
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brace_style: 'end-expand',
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space_before_conditional: true,
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unescape_strings: false,
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jslint_happy: true,
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end_with_newline: true,
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wrap_line_length: '110',
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indent_inner_html: true,
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comma_first: false,
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e4x: true,
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indent_empty_lines: true
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}
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}
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function stringify(obj) {
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return JSON.stringify(obj, (key, val) => {
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if (typeof val === 'function') {
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return `${val}`
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}
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return val
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})
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}
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function parse(str) {
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JSON.parse(str, (k, v) => {
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if (v.indexOf && v.indexOf('function') > -1) {
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return eval(`(${v})`)
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}
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return v
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})
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}
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export function jsonClone(obj) {
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return parse(stringify(obj))
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}
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// 深拷贝对象
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export function deepClone(obj) {
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const _toString = Object.prototype.toString
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// null, undefined, non-object, function
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if (!obj || typeof obj !== 'object') {
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return obj
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}
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// DOM Node
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if (obj.nodeType && 'cloneNode' in obj) {
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return obj.cloneNode(true)
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}
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// Date
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if (_toString.call(obj) === '[object Date]') {
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return new Date(obj.getTime())
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}
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// RegExp
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if (_toString.call(obj) === '[object RegExp]') {
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const flags = []
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if (obj.global) { flags.push('g') }
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if (obj.multiline) { flags.push('m') }
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if (obj.ignoreCase) { flags.push('i') }
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return new RegExp(obj.source, flags.join(''))
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}
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const result = Array.isArray(obj) ? [] : obj.constructor ? new obj.constructor() : {}
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for (const key in obj) {
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result[key] = deepClone(obj[key])
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}
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return result
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}
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const toStr = Function.prototype.call.bind(Object.prototype.toString)
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export function isObjectObject(t) {
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return toStr(t) === '[object Object]'
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}
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export function isObjectArray(t) {
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return toStr(t) === '[object Array]'
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}
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export function isObjectNull(t) {
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return toStr(t) === '[object Null]'
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}
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export function isObjectUnde(t) {
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return toStr(t) === '[object Undefined]'
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}
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