Initial Sample.

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2024-06-03 20:23:50 +05:30
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'use strict';
// A [trie](https://en.wikipedia.org/wiki/Trie) data structure that holds
// object keys weakly, yet can also hold non-object keys, unlike the
// native `WeakMap`.
// If no makeData function is supplied, the looked-up data will be an empty,
// null-prototype Object.
var defaultMakeData = function () { return Object.create(null); };
// Useful for processing arguments objects as well as arrays.
var _a = Array.prototype, forEach = _a.forEach, slice = _a.slice;
var hasOwnProperty = Object.prototype.hasOwnProperty;
var Trie = /** @class */ (function () {
function Trie(weakness, makeData) {
if (weakness === void 0) { weakness = true; }
if (makeData === void 0) { makeData = defaultMakeData; }
this.weakness = weakness;
this.makeData = makeData;
}
Trie.prototype.lookup = function () {
return this.lookupArray(arguments);
};
Trie.prototype.lookupArray = function (array) {
var node = this;
forEach.call(array, function (key) { return node = node.getChildTrie(key); });
return hasOwnProperty.call(node, "data")
? node.data
: node.data = this.makeData(slice.call(array));
};
Trie.prototype.peek = function () {
return this.peekArray(arguments);
};
Trie.prototype.peekArray = function (array) {
var node = this;
for (var i = 0, len = array.length; node && i < len; ++i) {
var map = node.mapFor(array[i], false);
node = map && map.get(array[i]);
}
return node && node.data;
};
Trie.prototype.remove = function () {
return this.removeArray(arguments);
};
Trie.prototype.removeArray = function (array) {
var data;
if (array.length) {
var head = array[0];
var map = this.mapFor(head, false);
var child = map && map.get(head);
if (child) {
data = child.removeArray(slice.call(array, 1));
if (!child.data && !child.weak && !(child.strong && child.strong.size)) {
map.delete(head);
}
}
}
else {
data = this.data;
delete this.data;
}
return data;
};
Trie.prototype.getChildTrie = function (key) {
var map = this.mapFor(key, true);
var child = map.get(key);
if (!child)
map.set(key, child = new Trie(this.weakness, this.makeData));
return child;
};
Trie.prototype.mapFor = function (key, create) {
return this.weakness && isObjRef(key)
? this.weak || (create ? this.weak = new WeakMap : void 0)
: this.strong || (create ? this.strong = new Map : void 0);
};
return Trie;
}());
function isObjRef(value) {
switch (typeof value) {
case "object":
if (value === null)
break;
// Fall through to return true...
case "function":
return true;
}
return false;
}
exports.Trie = Trie;
//# sourceMappingURL=bundle.cjs.map

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'use strict';
// A [trie](https://en.wikipedia.org/wiki/Trie) data structure that holds
// object keys weakly, yet can also hold non-object keys, unlike the
// native `WeakMap`.
// If no makeData function is supplied, the looked-up data will be an empty,
// null-prototype Object.
var defaultMakeData = function () { return Object.create(null); };
// Useful for processing arguments objects as well as arrays.
var _a = Array.prototype, forEach = _a.forEach, slice = _a.slice;
var hasOwnProperty = Object.prototype.hasOwnProperty;
var Trie = /** @class */ (function () {
function Trie(weakness, makeData) {
if (weakness === void 0) { weakness = true; }
if (makeData === void 0) { makeData = defaultMakeData; }
this.weakness = weakness;
this.makeData = makeData;
}
Trie.prototype.lookup = function () {
return this.lookupArray(arguments);
};
Trie.prototype.lookupArray = function (array) {
var node = this;
forEach.call(array, function (key) { return node = node.getChildTrie(key); });
return hasOwnProperty.call(node, "data")
? node.data
: node.data = this.makeData(slice.call(array));
};
Trie.prototype.peek = function () {
return this.peekArray(arguments);
};
Trie.prototype.peekArray = function (array) {
var node = this;
for (var i = 0, len = array.length; node && i < len; ++i) {
var map = node.mapFor(array[i], false);
node = map && map.get(array[i]);
}
return node && node.data;
};
Trie.prototype.remove = function () {
return this.removeArray(arguments);
};
Trie.prototype.removeArray = function (array) {
var data;
if (array.length) {
var head = array[0];
var map = this.mapFor(head, false);
var child = map && map.get(head);
if (child) {
data = child.removeArray(slice.call(array, 1));
if (!child.data && !child.weak && !(child.strong && child.strong.size)) {
map.delete(head);
}
}
}
else {
data = this.data;
delete this.data;
}
return data;
};
Trie.prototype.getChildTrie = function (key) {
var map = this.mapFor(key, true);
var child = map.get(key);
if (!child)
map.set(key, child = new Trie(this.weakness, this.makeData));
return child;
};
Trie.prototype.mapFor = function (key, create) {
return this.weakness && isObjRef(key)
? this.weak || (create ? this.weak = new WeakMap : void 0)
: this.strong || (create ? this.strong = new Map : void 0);
};
return Trie;
}());
function isObjRef(value) {
switch (typeof value) {
case "object":
if (value === null)
break;
// Fall through to return true...
case "function":
return true;
}
return false;
}
exports.Trie = Trie;
//# sourceMappingURL=bundle.cjs.map

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export declare class Trie<Data> {
private weakness;
private makeData;
private weak?;
private strong?;
private data?;
constructor(weakness?: boolean, makeData?: (array: any[]) => Data);
lookup<T extends any[]>(...array: T): Data;
lookupArray<T extends IArguments | any[]>(array: T): Data;
peek<T extends any[]>(...array: T): Data | undefined;
peekArray<T extends IArguments | any[]>(array: T): Data | undefined;
remove(...array: any[]): Data | undefined;
removeArray<T extends IArguments | any[]>(array: T): Data | undefined;
private getChildTrie;
private mapFor;
}

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// A [trie](https://en.wikipedia.org/wiki/Trie) data structure that holds
// object keys weakly, yet can also hold non-object keys, unlike the
// native `WeakMap`.
// If no makeData function is supplied, the looked-up data will be an empty,
// null-prototype Object.
const defaultMakeData = () => Object.create(null);
// Useful for processing arguments objects as well as arrays.
const { forEach, slice } = Array.prototype;
const { hasOwnProperty } = Object.prototype;
export class Trie {
constructor(weakness = true, makeData = defaultMakeData) {
this.weakness = weakness;
this.makeData = makeData;
}
lookup() {
return this.lookupArray(arguments);
}
lookupArray(array) {
let node = this;
forEach.call(array, key => node = node.getChildTrie(key));
return hasOwnProperty.call(node, "data")
? node.data
: node.data = this.makeData(slice.call(array));
}
peek() {
return this.peekArray(arguments);
}
peekArray(array) {
let node = this;
for (let i = 0, len = array.length; node && i < len; ++i) {
const map = node.mapFor(array[i], false);
node = map && map.get(array[i]);
}
return node && node.data;
}
remove() {
return this.removeArray(arguments);
}
removeArray(array) {
let data;
if (array.length) {
const head = array[0];
const map = this.mapFor(head, false);
const child = map && map.get(head);
if (child) {
data = child.removeArray(slice.call(array, 1));
if (!child.data && !child.weak && !(child.strong && child.strong.size)) {
map.delete(head);
}
}
}
else {
data = this.data;
delete this.data;
}
return data;
}
getChildTrie(key) {
const map = this.mapFor(key, true);
let child = map.get(key);
if (!child)
map.set(key, child = new Trie(this.weakness, this.makeData));
return child;
}
mapFor(key, create) {
return this.weakness && isObjRef(key)
? this.weak || (create ? this.weak = new WeakMap : void 0)
: this.strong || (create ? this.strong = new Map : void 0);
}
}
function isObjRef(value) {
switch (typeof value) {
case "object":
if (value === null)
break;
// Fall through to return true...
case "function":
return true;
}
return false;
}
//# sourceMappingURL=index.js.map

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