From 3c51c3be85bb0d1bdb87ea0d6632f1c256912f27 Mon Sep 17 00:00:00 2001 From: Dimitri Staessens Date: Sun, 6 Oct 2019 21:37:45 +0200 Subject: build: Add some required modules for node --- node_modules/yallist/yallist.js | 370 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 370 insertions(+) create mode 100644 node_modules/yallist/yallist.js (limited to 'node_modules/yallist/yallist.js') diff --git a/node_modules/yallist/yallist.js b/node_modules/yallist/yallist.js new file mode 100644 index 0000000..518d233 --- /dev/null +++ b/node_modules/yallist/yallist.js @@ -0,0 +1,370 @@ +module.exports = Yallist + +Yallist.Node = Node +Yallist.create = Yallist + +function Yallist (list) { + var self = this + if (!(self instanceof Yallist)) { + self = new Yallist() + } + + self.tail = null + self.head = null + self.length = 0 + + if (list && typeof list.forEach === 'function') { + list.forEach(function (item) { + self.push(item) + }) + } else if (arguments.length > 0) { + for (var i = 0, l = arguments.length; i < l; i++) { + self.push(arguments[i]) + } + } + + return self +} + +Yallist.prototype.removeNode = function (node) { + if (node.list !== this) { + throw new Error('removing node which does not belong to this list') + } + + var next = node.next + var prev = node.prev + + if (next) { + next.prev = prev + } + + if (prev) { + prev.next = next + } + + if (node === this.head) { + this.head = next + } + if (node === this.tail) { + this.tail = prev + } + + node.list.length-- + node.next = null + node.prev = null + node.list = null +} + +Yallist.prototype.unshiftNode = function (node) { + if (node === this.head) { + return + } + + if (node.list) { + node.list.removeNode(node) + } + + var head = this.head + node.list = this + node.next = head + if (head) { + head.prev = node + } + + this.head = node + if (!this.tail) { + this.tail = node + } + this.length++ +} + +Yallist.prototype.pushNode = function (node) { + if (node === this.tail) { + return + } + + if (node.list) { + node.list.removeNode(node) + } + + var tail = this.tail + node.list = this + node.prev = tail + if (tail) { + tail.next = node + } + + this.tail = node + if (!this.head) { + this.head = node + } + this.length++ +} + +Yallist.prototype.push = function () { + for (var i = 0, l = arguments.length; i < l; i++) { + push(this, arguments[i]) + } + return this.length +} + +Yallist.prototype.unshift = function () { + for (var i = 0, l = arguments.length; i < l; i++) { + unshift(this, arguments[i]) + } + return this.length +} + +Yallist.prototype.pop = function () { + if (!this.tail) { + return undefined + } + + var res = this.tail.value + this.tail = this.tail.prev + if (this.tail) { + this.tail.next = null + } else { + this.head = null + } + this.length-- + return res +} + +Yallist.prototype.shift = function () { + if (!this.head) { + return undefined + } + + var res = this.head.value + this.head = this.head.next + if (this.head) { + this.head.prev = null + } else { + this.tail = null + } + this.length-- + return res +} + +Yallist.prototype.forEach = function (fn, thisp) { + thisp = thisp || this + for (var walker = this.head, i = 0; walker !== null; i++) { + fn.call(thisp, walker.value, i, this) + walker = walker.next + } +} + +Yallist.prototype.forEachReverse = function (fn, thisp) { + thisp = thisp || this + for (var walker = this.tail, i = this.length - 1; walker !== null; i--) { + fn.call(thisp, walker.value, i, this) + walker = walker.prev + } +} + +Yallist.prototype.get = function (n) { + for (var i = 0, walker = this.head; walker !== null && i < n; i++) { + // abort out of the list early if we hit a cycle + walker = walker.next + } + if (i === n && walker !== null) { + return walker.value + } +} + +Yallist.prototype.getReverse = function (n) { + for (var i = 0, walker = this.tail; walker !== null && i < n; i++) { + // abort out of the list early if we hit a cycle + walker = walker.prev + } + if (i === n && walker !== null) { + return walker.value + } +} + +Yallist.prototype.map = function (fn, thisp) { + thisp = thisp || this + var res = new Yallist() + for (var walker = this.head; walker !== null;) { + res.push(fn.call(thisp, walker.value, this)) + walker = walker.next + } + return res +} + +Yallist.prototype.mapReverse = function (fn, thisp) { + thisp = thisp || this + var res = new Yallist() + for (var walker = this.tail; walker !== null;) { + res.push(fn.call(thisp, walker.value, this)) + walker = walker.prev + } + return res +} + +Yallist.prototype.reduce = function (fn, initial) { + var acc + var walker = this.head + if (arguments.length > 1) { + acc = initial + } else if (this.head) { + walker = this.head.next + acc = this.head.value + } else { + throw new TypeError('Reduce of empty list with no initial value') + } + + for (var i = 0; walker !== null; i++) { + acc = fn(acc, walker.value, i) + walker = walker.next + } + + return acc +} + +Yallist.prototype.reduceReverse = function (fn, initial) { + var acc + var walker = this.tail + if (arguments.length > 1) { + acc = initial + } else if (this.tail) { + walker = this.tail.prev + acc = this.tail.value + } else { + throw new TypeError('Reduce of empty list with no initial value') + } + + for (var i = this.length - 1; walker !== null; i--) { + acc = fn(acc, walker.value, i) + walker = walker.prev + } + + return acc +} + +Yallist.prototype.toArray = function () { + var arr = new Array(this.length) + for (var i = 0, walker = this.head; walker !== null; i++) { + arr[i] = walker.value + walker = walker.next + } + return arr +} + +Yallist.prototype.toArrayReverse = function () { + var arr = new Array(this.length) + for (var i = 0, walker = this.tail; walker !== null; i++) { + arr[i] = walker.value + walker = walker.prev + } + return arr +} + +Yallist.prototype.slice = function (from, to) { + to = to || this.length + if (to < 0) { + to += this.length + } + from = from || 0 + if (from < 0) { + from += this.length + } + var ret = new Yallist() + if (to < from || to < 0) { + return ret + } + if (from < 0) { + from = 0 + } + if (to > this.length) { + to = this.length + } + for (var i = 0, walker = this.head; walker !== null && i < from; i++) { + walker = walker.next + } + for (; walker !== null && i < to; i++, walker = walker.next) { + ret.push(walker.value) + } + return ret +} + +Yallist.prototype.sliceReverse = function (from, to) { + to = to || this.length + if (to < 0) { + to += this.length + } + from = from || 0 + if (from < 0) { + from += this.length + } + var ret = new Yallist() + if (to < from || to < 0) { + return ret + } + if (from < 0) { + from = 0 + } + if (to > this.length) { + to = this.length + } + for (var i = this.length, walker = this.tail; walker !== null && i > to; i--) { + walker = walker.prev + } + for (; walker !== null && i > from; i--, walker = walker.prev) { + ret.push(walker.value) + } + return ret +} + +Yallist.prototype.reverse = function () { + var head = this.head + var tail = this.tail + for (var walker = head; walker !== null; walker = walker.prev) { + var p = walker.prev + walker.prev = walker.next + walker.next = p + } + this.head = tail + this.tail = head + return this +} + +function push (self, item) { + self.tail = new Node(item, self.tail, null, self) + if (!self.head) { + self.head = self.tail + } + self.length++ +} + +function unshift (self, item) { + self.head = new Node(item, null, self.head, self) + if (!self.tail) { + self.tail = self.head + } + self.length++ +} + +function Node (value, prev, next, list) { + if (!(this instanceof Node)) { + return new Node(value, prev, next, list) + } + + this.list = list + this.value = value + + if (prev) { + prev.next = this + this.prev = prev + } else { + this.prev = null + } + + if (next) { + next.prev = this + this.next = next + } else { + this.next = null + } +} -- cgit v1.2.3