hexo/node_modules/rfdc/index.js

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2023-10-03 11:14:36 +08:00
'use strict'
module.exports = rfdc
function copyBuffer (cur) {
if (cur instanceof Buffer) {
return Buffer.from(cur)
}
return new cur.constructor(cur.buffer.slice(), cur.byteOffset, cur.length)
}
function rfdc (opts) {
opts = opts || {}
if (opts.circles) return rfdcCircles(opts)
return opts.proto ? cloneProto : clone
function cloneArray (a, fn) {
var keys = Object.keys(a)
var a2 = new Array(keys.length)
for (var i = 0; i < keys.length; i++) {
var k = keys[i]
var cur = a[k]
if (typeof cur !== 'object' || cur === null) {
a2[k] = cur
} else if (cur instanceof Date) {
a2[k] = new Date(cur)
} else if (ArrayBuffer.isView(cur)) {
a2[k] = copyBuffer(cur)
} else {
a2[k] = fn(cur)
}
}
return a2
}
function clone (o) {
if (typeof o !== 'object' || o === null) return o
if (o instanceof Date) return new Date(o)
if (Array.isArray(o)) return cloneArray(o, clone)
if (o instanceof Map) return new Map(cloneArray(Array.from(o), clone))
if (o instanceof Set) return new Set(cloneArray(Array.from(o), clone))
var o2 = {}
for (var k in o) {
if (Object.hasOwnProperty.call(o, k) === false) continue
var cur = o[k]
if (typeof cur !== 'object' || cur === null) {
o2[k] = cur
} else if (cur instanceof Date) {
o2[k] = new Date(cur)
} else if (cur instanceof Map) {
o2[k] = new Map(cloneArray(Array.from(cur), clone))
} else if (cur instanceof Set) {
o2[k] = new Set(cloneArray(Array.from(cur), clone))
} else if (ArrayBuffer.isView(cur)) {
o2[k] = copyBuffer(cur)
} else {
o2[k] = clone(cur)
}
}
return o2
}
function cloneProto (o) {
if (typeof o !== 'object' || o === null) return o
if (o instanceof Date) return new Date(o)
if (Array.isArray(o)) return cloneArray(o, cloneProto)
if (o instanceof Map) return new Map(cloneArray(Array.from(o), cloneProto))
if (o instanceof Set) return new Set(cloneArray(Array.from(o), cloneProto))
var o2 = {}
for (var k in o) {
var cur = o[k]
if (typeof cur !== 'object' || cur === null) {
o2[k] = cur
} else if (cur instanceof Date) {
o2[k] = new Date(cur)
} else if (cur instanceof Map) {
o2[k] = new Map(cloneArray(Array.from(cur), cloneProto))
} else if (cur instanceof Set) {
o2[k] = new Set(cloneArray(Array.from(cur), cloneProto))
} else if (ArrayBuffer.isView(cur)) {
o2[k] = copyBuffer(cur)
} else {
o2[k] = cloneProto(cur)
}
}
return o2
}
}
function rfdcCircles (opts) {
var refs = []
var refsNew = []
return opts.proto ? cloneProto : clone
function cloneArray (a, fn) {
var keys = Object.keys(a)
var a2 = new Array(keys.length)
for (var i = 0; i < keys.length; i++) {
var k = keys[i]
var cur = a[k]
if (typeof cur !== 'object' || cur === null) {
a2[k] = cur
} else if (cur instanceof Date) {
a2[k] = new Date(cur)
} else if (ArrayBuffer.isView(cur)) {
a2[k] = copyBuffer(cur)
} else {
var index = refs.indexOf(cur)
if (index !== -1) {
a2[k] = refsNew[index]
} else {
a2[k] = fn(cur)
}
}
}
return a2
}
function clone (o) {
if (typeof o !== 'object' || o === null) return o
if (o instanceof Date) return new Date(o)
if (Array.isArray(o)) return cloneArray(o, clone)
if (o instanceof Map) return new Map(cloneArray(Array.from(o), clone))
if (o instanceof Set) return new Set(cloneArray(Array.from(o), clone))
var o2 = {}
refs.push(o)
refsNew.push(o2)
for (var k in o) {
if (Object.hasOwnProperty.call(o, k) === false) continue
var cur = o[k]
if (typeof cur !== 'object' || cur === null) {
o2[k] = cur
} else if (cur instanceof Date) {
o2[k] = new Date(cur)
} else if (cur instanceof Map) {
o2[k] = new Map(cloneArray(Array.from(cur), clone))
} else if (cur instanceof Set) {
o2[k] = new Set(cloneArray(Array.from(cur), clone))
} else if (ArrayBuffer.isView(cur)) {
o2[k] = copyBuffer(cur)
} else {
var i = refs.indexOf(cur)
if (i !== -1) {
o2[k] = refsNew[i]
} else {
o2[k] = clone(cur)
}
}
}
refs.pop()
refsNew.pop()
return o2
}
function cloneProto (o) {
if (typeof o !== 'object' || o === null) return o
if (o instanceof Date) return new Date(o)
if (Array.isArray(o)) return cloneArray(o, cloneProto)
if (o instanceof Map) return new Map(cloneArray(Array.from(o), cloneProto))
if (o instanceof Set) return new Set(cloneArray(Array.from(o), cloneProto))
var o2 = {}
refs.push(o)
refsNew.push(o2)
for (var k in o) {
var cur = o[k]
if (typeof cur !== 'object' || cur === null) {
o2[k] = cur
} else if (cur instanceof Date) {
o2[k] = new Date(cur)
} else if (cur instanceof Map) {
o2[k] = new Map(cloneArray(Array.from(cur), cloneProto))
} else if (cur instanceof Set) {
o2[k] = new Set(cloneArray(Array.from(cur), cloneProto))
} else if (ArrayBuffer.isView(cur)) {
o2[k] = copyBuffer(cur)
} else {
var i = refs.indexOf(cur)
if (i !== -1) {
o2[k] = refsNew[i]
} else {
o2[k] = cloneProto(cur)
}
}
}
refs.pop()
refsNew.pop()
return o2
}
}