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- // https://d3js.org/d3-collection/ v1.0.7 Copyright 2018 Mike Bostock
- (function (global, factory) {
- typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
- typeof define === 'function' && define.amd ? define(['exports'], factory) :
- (factory((global.d3 = global.d3 || {})));
- }(this, (function (exports) { 'use strict';
-
- var prefix = "$";
-
- function Map() {}
-
- Map.prototype = map.prototype = {
- constructor: Map,
- has: function(key) {
- return (prefix + key) in this;
- },
- get: function(key) {
- return this[prefix + key];
- },
- set: function(key, value) {
- this[prefix + key] = value;
- return this;
- },
- remove: function(key) {
- var property = prefix + key;
- return property in this && delete this[property];
- },
- clear: function() {
- for (var property in this) if (property[0] === prefix) delete this[property];
- },
- keys: function() {
- var keys = [];
- for (var property in this) if (property[0] === prefix) keys.push(property.slice(1));
- return keys;
- },
- values: function() {
- var values = [];
- for (var property in this) if (property[0] === prefix) values.push(this[property]);
- return values;
- },
- entries: function() {
- var entries = [];
- for (var property in this) if (property[0] === prefix) entries.push({key: property.slice(1), value: this[property]});
- return entries;
- },
- size: function() {
- var size = 0;
- for (var property in this) if (property[0] === prefix) ++size;
- return size;
- },
- empty: function() {
- for (var property in this) if (property[0] === prefix) return false;
- return true;
- },
- each: function(f) {
- for (var property in this) if (property[0] === prefix) f(this[property], property.slice(1), this);
- }
- };
-
- function map(object, f) {
- var map = new Map;
-
- // Copy constructor.
- if (object instanceof Map) object.each(function(value, key) { map.set(key, value); });
-
- // Index array by numeric index or specified key function.
- else if (Array.isArray(object)) {
- var i = -1,
- n = object.length,
- o;
-
- if (f == null) while (++i < n) map.set(i, object[i]);
- else while (++i < n) map.set(f(o = object[i], i, object), o);
- }
-
- // Convert object to map.
- else if (object) for (var key in object) map.set(key, object[key]);
-
- return map;
- }
-
- function nest() {
- var keys = [],
- sortKeys = [],
- sortValues,
- rollup,
- nest;
-
- function apply(array, depth, createResult, setResult) {
- if (depth >= keys.length) {
- if (sortValues != null) array.sort(sortValues);
- return rollup != null ? rollup(array) : array;
- }
-
- var i = -1,
- n = array.length,
- key = keys[depth++],
- keyValue,
- value,
- valuesByKey = map(),
- values,
- result = createResult();
-
- while (++i < n) {
- if (values = valuesByKey.get(keyValue = key(value = array[i]) + "")) {
- values.push(value);
- } else {
- valuesByKey.set(keyValue, [value]);
- }
- }
-
- valuesByKey.each(function(values, key) {
- setResult(result, key, apply(values, depth, createResult, setResult));
- });
-
- return result;
- }
-
- function entries(map$$1, depth) {
- if (++depth > keys.length) return map$$1;
- var array, sortKey = sortKeys[depth - 1];
- if (rollup != null && depth >= keys.length) array = map$$1.entries();
- else array = [], map$$1.each(function(v, k) { array.push({key: k, values: entries(v, depth)}); });
- return sortKey != null ? array.sort(function(a, b) { return sortKey(a.key, b.key); }) : array;
- }
-
- return nest = {
- object: function(array) { return apply(array, 0, createObject, setObject); },
- map: function(array) { return apply(array, 0, createMap, setMap); },
- entries: function(array) { return entries(apply(array, 0, createMap, setMap), 0); },
- key: function(d) { keys.push(d); return nest; },
- sortKeys: function(order) { sortKeys[keys.length - 1] = order; return nest; },
- sortValues: function(order) { sortValues = order; return nest; },
- rollup: function(f) { rollup = f; return nest; }
- };
- }
-
- function createObject() {
- return {};
- }
-
- function setObject(object, key, value) {
- object[key] = value;
- }
-
- function createMap() {
- return map();
- }
-
- function setMap(map$$1, key, value) {
- map$$1.set(key, value);
- }
-
- function Set() {}
-
- var proto = map.prototype;
-
- Set.prototype = set.prototype = {
- constructor: Set,
- has: proto.has,
- add: function(value) {
- value += "";
- this[prefix + value] = value;
- return this;
- },
- remove: proto.remove,
- clear: proto.clear,
- values: proto.keys,
- size: proto.size,
- empty: proto.empty,
- each: proto.each
- };
-
- function set(object, f) {
- var set = new Set;
-
- // Copy constructor.
- if (object instanceof Set) object.each(function(value) { set.add(value); });
-
- // Otherwise, assume it’s an array.
- else if (object) {
- var i = -1, n = object.length;
- if (f == null) while (++i < n) set.add(object[i]);
- else while (++i < n) set.add(f(object[i], i, object));
- }
-
- return set;
- }
-
- function keys(map) {
- var keys = [];
- for (var key in map) keys.push(key);
- return keys;
- }
-
- function values(map) {
- var values = [];
- for (var key in map) values.push(map[key]);
- return values;
- }
-
- function entries(map) {
- var entries = [];
- for (var key in map) entries.push({key: key, value: map[key]});
- return entries;
- }
-
- exports.nest = nest;
- exports.set = set;
- exports.map = map;
- exports.keys = keys;
- exports.values = values;
- exports.entries = entries;
-
- Object.defineProperty(exports, '__esModule', { value: true });
-
- })));
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