chain-able
Version:
interfaces that describe their intentions.
408 lines (376 loc) • 32.8 kB
JavaScript
var Iterator = require('./deps/symbols/iterator')
var Instance = require('./deps/symbols/instance')
var Primitive = require('./deps/symbols/primitive')
var isPrototypeOf = require('./deps/is/prototypeOf')
var isMap = require('./deps/is/map')
var isSet = require('./deps/is/set')
var isUndefined = require('./deps/is/undefined')
var isFunction = require('./deps/is/function')
var isString = require('./deps/is/string')
var isFalse = require('./deps/is/false')
var ObjectKeys = require('./deps/util/keys')
var ObjectDefine = require('./deps/define')
var ignored = require('./deps/ignored')
var ENV_DEVELOPMENT = require('./deps/env/dev')
var shouldClear = function (key, property) { return !ignored(key) &&
(isMap(property) || isSet(property) || (property && property.store)); }
var C = function (SuperClass) {
/* istanbul ignore next: dev */
if (ENV_DEVELOPMENT) {
if (!SuperClass || !SuperClass.prototype) {
console.log({SuperClass: SuperClass})
throw new TypeError('did not have a super class / target base')
}
}
/**
* @desc Trait class that can inherit any class passed into compose, extended by ChainedMap & ChainedSet
*
* @member Chainable
* @class Chainable
* @category Chainable
* @type {Chainable}
*
* @prop {Chainable | any} parent
* @prop {string} className
*
* {@link https://github.com/iluwatar/java-design-patterns/tree/master/chain chain-pattern}
* @see {@link chain-pattern}
*
* @see ChainedMap
* @see ChainedSet
*
* @tests Chainable
* @types Chainable
*/
var Chainable = (function (SuperClass) {
function Chainable(parent) {
SuperClass.call(this)
if (parent) { this.parent = parent }
this.className = this.constructor.name
}
if ( SuperClass ) Chainable.__proto__ = SuperClass;
Chainable.prototype = Object.create( SuperClass && SuperClass.prototype );
Chainable.prototype.constructor = Chainable;
/**
* @desc Iterator for looping values in the store
*
* @since 0.5.0
* @see this.store
* @type {generator}
* @return {Object} {value: undefined | any, done: true | false}
*
* @NOTE assigned to a variable so buble ignores it
* @see https://github.com/sindresorhus/quick-lru/blob/master/index.js
* @see https://stackoverflow.com/questions/36976832/what-is-the-meaning-of-symbol-iterator-in-this-context
* @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/iterator
* @tests iteration
*
* @example
*
* const chain = new Chain().set('eh', 1)
* for (var [key, val] of chain) console.log({[key]: val})
* //=> {eh: 1}
*
* @example
*
* *[Symbol.iterator](): void { for (const item of this.store) yield item }
*
* @example
*
* const {ChainedSet} = require('chain-able')
* const set = new ChainedSet()
* set.add('eh')
*
* for (const arr of set) {
* const [key, val] = arr
*
* key
* //=> 0
*
* val
* //=> 'eh'
*
* arr.length
* //=> 2
* }
*
*/
Chainable.prototype[Iterator] = function () {
var values = this.values()
var size = this.store.size
var entries = this.entries ? this.entries() : 0
var keys = entries === 0 ? new Array(size) : ObjectKeys(entries)
return {
i: 0,
next: function next() {
var i = this.i
var key = i
var val = values[i]
if (entries) { key = keys[i] }
// done - no more values, or iteration reached size
if ((isUndefined(key) && isUndefined(val)) || size <= i) {
return {value: undefined, done: true}
}
this.i++
// return
return {value: [key, val], done: false}
},
}
};
/**
* @desc for ending nested chains
* @since 0.4.0
* @return {Chainable | any}
* @see Chainable.parent
* @see FactoryChain
*
* @example
*
* const parent = 'eh'
* const child = newChain(parent)
* child.end()
* //=> 'eh'
*
*/
Chainable.prototype.end = function end () {
return this.parent
};
/**
* @desc when the condition is true,
* trueBrancher is called,
* else, falseBrancher is called
*
* @since 4.0.0 <- added string-as-has(condition)
* @since 2.0.0
*
* @param {boolean | string} condition when string, checks this.get
* @param {Function} [trueBrancher=Function] called when true
* @param {Function} [falseBrancher=Function] called when false
* @return {Chainable} @chainable
*
* @example
*
*
* const prod = process.env.NODE_ENV === 'production'
* chains.when(prod, c => c.set('prod', true), c => c.set('prod', false))
*
*
*/
Chainable.prototype.when = function when (condition, trueBrancher, falseBrancher) {
if (condition) {
if (isFunction(trueBrancher)) {
if (isString(condition)) {
if (this.get(condition)) {
trueBrancher(this)
}
}
else {
trueBrancher(this)
}
}
}
else if (isFunction(falseBrancher)) {
falseBrancher(this)
}
return this
};
/**
* @desc clears the map,
* goes through this properties,
* calls .clear if they are instanceof Chainable or Map
*
* @since 4.0.0 (moved only to Chainable, added option to clear this keys)
* @since 0.4.0 (in ChainedMap)
* @since 0.3.0 (in Chainable)
*
* @param {boolean | undefined} [clearPropertiesThatAreChainLike=true] checks properties on the object, if they are `chain-like`, clears them as well
* @return {Chainable} @chainable
*
* @see https://github.com/fliphub/flipchain/issues/2
* @see ChainedSet
* @see ChainedMap
*
* @example
*
* const chain = new Chain()
* chain.set('eh', 1)
* chain.entries()
* //=> {eh: 1}
* chain.clear()
* chain.entries()
* //=> {}
*
*/
Chainable.prototype.clear = function clear (clearPropertiesThatAreChainLike) {
var this$1 = this;
this.store.clear()
if (isFalse(clearPropertiesThatAreChainLike)) { return this }
var keys = ObjectKeys(this)
for (var k = 0; k < keys.length; k++) {
var key = keys[k]
var property = this$1[key]
if (shouldClear(key, property)) { this$1[key].clear() }
}
return this
};
/**
* @desc calls .delete on this.store.map
* @since 0.3.0
*
* @param {Primitive} key on a Map: key referencing the value. on a Set: the index
* @return {Chainable}
*
* @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/has
* @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set/has
* @see ChainedSet
* @see ChainedMap
*
* @example
*
* const chain = new Chain()
* chain.set('eh', 1)
* chain.get('eh')
* // => 1
* chain.delete('eh', 1)
* chain.get('eh')
* // => undefined
*
*/
Chainable.prototype.delete = function delete$1 (key) {
this.store.delete(key)
return this
};
/**
* @since 0.3.0
* @param {any} keyOrValue key when Map, value when Set
* @return {boolean}
* @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/has
*
* @example
*
* const chain = new Chain()
* chain.set('eh', 1).has('eh')
* //=> true
* chain.has('canada')
* //=> false
*
*/
Chainable.prototype.has = function has (keyOrValue) {
return this.store.has(keyOrValue)
};
/**
* @desc spreads the entries from ChainedMap.store.values
* @since 0.4.0
*
* @return {Array<any>} toArr(this.store.values())
*
* @NOTE look at Chainable.constructor to ensure not to use `new Array...`
* @NOTE moved from ChainedMap and ChainedSet to Chainable @2.0.2
* @NOTE this was [...] & Array.from(this.store.values())
*
* {@link https://kangax.github.io/compat-table/es6/#test-Array_static_methods compat-array-static-methods}
* {@link https://stackoverflow.com/questions/20069828/how-to-convert-set-to-array set-to-array}
* {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/values mozilla-map-values}
* {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set/values mozilla-set-values}
*
* @see {@link mozilla-map-values}
* @see {@link mozilla-set-values}
* @see {@link compat-array-static-methods}
* @see {@link set-to-array}
*
* @example
*
* const chain = new Chain()
* chain.set('eh', 1)
* chain.values()
* //=> [1]
*
*/
Chainable.prototype.values = function values () {
var vals = []
this.store.forEach(function (v) { return vals.push(v); })
return vals
};
/**
* @see http://2ality.com/2015/09/well-known-symbols-es6.html#default-tostring-tags
* @since 1.0.2
*
* @param {string} hint enum[default, string, number]
* @return {Primitive}
*
* @example
*
* const chain = new Chain()
* chain.toNumber = () => 1
* +chain;
* //=> 1
* chain + 1
* //=>
*
* @example
*
* const chain = new Chain()
* chain.toString = () => 'eh'
* chain + ''
* //=> 'eh'
*
*/
Chainable.prototype[Primitive] = function (hint) {
/* prettier-ignore */
/**
* hint === 'number'
* `s`tring is 115
* `n`umber is 110
* 110 & 4 = 1
* 115 & 4 = 0
*
* if (hint === 'string' && this.toJSON) return this.toJSON()
* else if (hint === 'number' && this.toNumber) return this.toNumber()
*/
if (hint === 'number' && this.toNumber) { return this.toNumber() }
// hint === 'string'
if (this.toJSON) { return this.toJSON() }
// hint === 'default'
return this.toString()
};
return Chainable;
}(SuperClass));
var ChainPrototype = Chainable.prototype
/**
* @private
* @since 0.5.0
* @example for (var i = 0; i < chain.length; i++)
* @see ChainedMap.store
* @return {number}
*/
ObjectDefine(ChainPrototype, 'length', {
enumerable: false,
get: function get() {
return this.store.size
},
})
ObjectDefine(ChainPrototype, Instance, {
enumerable: false,
value: function (instance) { return instance && (isPrototypeOf(ChainPrototype, instance) || instance.store); },
})
return Chainable
}
var c = C((function () {
function anonymous () {}
return anonymous;
}()))
/**
* @since 3.0.0
* @func
* @example
*
* class Target {}
* const TargetChain = Chainable.compose(Target)
* const chain = new TargetChain()
* chain instanceof Target
* //=> true
*
*/
c.compose = C
module.exports = c
//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"Chainable.js","sources":["Chainable.js"],"sourcesContent":["const Iterator = require('./deps/symbols/iterator')\nconst Instance = require('./deps/symbols/instance')\nconst Primitive = require('./deps/symbols/primitive')\nconst isPrototypeOf = require('./deps/is/prototypeOf')\nconst isMap = require('./deps/is/map')\nconst isSet = require('./deps/is/set')\nconst isUndefined = require('./deps/is/undefined')\nconst isFunction = require('./deps/is/function')\nconst isString = require('./deps/is/string')\nconst isFalse = require('./deps/is/false')\nconst ObjectKeys = require('./deps/util/keys')\nconst ObjectDefine = require('./deps/define')\nconst ignored = require('./deps/ignored')\nconst ENV_DEVELOPMENT = require('./deps/env/dev')\n\nconst shouldClear = (key, property) =>\n  !ignored(key) &&\n  (isMap(property) || isSet(property) || (property && property.store))\n\nconst C = SuperClass => {\n  /* istanbul ignore next: dev */\n  if (ENV_DEVELOPMENT) {\n    if (!SuperClass || !SuperClass.prototype) {\n      console.log({SuperClass})\n      throw new TypeError('did not have a super class / target base')\n    }\n  }\n\n  /**\n   * @desc Trait class that can inherit any class passed into compose, extended by ChainedMap & ChainedSet\n   *\n   * @member Chainable\n   * @class Chainable\n   * @category Chainable\n   * @type {Chainable}\n   *\n   * @prop {Chainable | any} parent\n   * @prop {string} className\n   *\n   * {@link https://github.com/iluwatar/java-design-patterns/tree/master/chain chain-pattern}\n   * @see {@link chain-pattern}\n   *\n   * @see ChainedMap\n   * @see ChainedSet\n   *\n   * @tests Chainable\n   * @types Chainable\n   */\n  class Chainable extends SuperClass {\n    /**\n     * @since 0.0.1\n     * @param {Chainable | any | ParentType} parent ParentType\n     * @constructor\n     *\n     * @example\n     *\n     *    class ChainedMap extends Chainable {}\n     *    const map = new ChainedMap()\n     *    map.className\n     *    //=> ChainedMap\n     */\n    constructor(parent) {\n      super()\n      if (parent) this.parent = parent\n      this.className = this.constructor.name\n    }\n\n    /**\n     * @desc Iterator for looping values in the store\n     *\n     * @since 0.5.0\n     * @see this.store\n     * @type {generator}\n     * @return {Object} {value: undefined | any, done: true | false}\n     *\n     * @NOTE assigned to a variable so buble ignores it\n     * @see https://github.com/sindresorhus/quick-lru/blob/master/index.js\n     * @see https://stackoverflow.com/questions/36976832/what-is-the-meaning-of-symbol-iterator-in-this-context\n     * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/iterator\n     * @tests iteration\n     *\n     * @example\n     *\n     *    const chain = new Chain().set('eh', 1)\n     *    for (var [key, val] of chain) console.log({[key]: val})\n     *    //=> {eh: 1}\n     *\n     * @example\n     *\n     *    *[Symbol.iterator](): void { for (const item of this.store) yield item }\n     *\n     * @example\n     *\n     *    const {ChainedSet} = require('chain-able')\n     *    const set = new ChainedSet()\n     *    set.add('eh')\n     *\n     *    for (const arr of set) {\n     *      const [key, val] = arr\n     *\n     *      key\n     *      //=> 0\n     *\n     *      val\n     *      //=> 'eh'\n     *\n     *      arr.length\n     *      //=> 2\n     *    }\n     *\n     */\n    [Iterator]() {\n      const values = this.values()\n      const size = this.store.size\n      const entries = this.entries ? this.entries() : 0\n      const keys = entries === 0 ? new Array(size) : ObjectKeys(entries)\n\n      return {\n        i: 0,\n        next() {\n          let i = this.i\n          let key = i\n          const val = values[i]\n          if (entries) key = keys[i]\n\n          // done - no more values, or iteration reached size\n          if ((isUndefined(key) && isUndefined(val)) || size <= i) {\n            return {value: undefined, done: true}\n          }\n\n          this.i++\n\n          // return\n          return {value: [key, val], done: false}\n        },\n      }\n    }\n\n    /**\n     * @desc for ending nested chains\n     * @since 0.4.0\n     * @return {Chainable | any}\n     * @see Chainable.parent\n     * @see FactoryChain\n     *\n     * @example\n     *\n     *    const parent = 'eh'\n     *    const child = newChain(parent)\n     *    child.end()\n     *    //=> 'eh'\n     *\n     */\n    end() {\n      return this.parent\n    }\n\n    /**\n     * @desc when the condition is true,\n     *       trueBrancher is called,\n     *       else, falseBrancher is called\n     *\n     * @since 4.0.0 <- added string-as-has(condition)\n     * @since 2.0.0\n     *\n     * @param  {boolean | string} condition when string, checks this.get\n     * @param  {Function} [trueBrancher=Function] called when true\n     * @param  {Function} [falseBrancher=Function] called when false\n     * @return {Chainable} @chainable\n     *\n     * @example\n     *\n     *\n     *  const prod = process.env.NODE_ENV === 'production'\n     *  chains.when(prod, c => c.set('prod', true), c => c.set('prod', false))\n     *\n     *\n     */\n    when(condition, trueBrancher, falseBrancher) {\n      if (condition) {\n        if (isFunction(trueBrancher)) {\n          if (isString(condition)) {\n            if (this.get(condition)) {\n              trueBrancher(this)\n            }\n          }\n          else {\n            trueBrancher(this)\n          }\n        }\n      }\n      else if (isFunction(falseBrancher)) {\n        falseBrancher(this)\n      }\n\n      return this\n    }\n\n    /**\n     * @desc clears the map,\n     *       goes through this properties,\n     *       calls .clear if they are instanceof Chainable or Map\n     *\n     * @since 4.0.0 (moved only to Chainable, added option to clear this keys)\n     * @since 0.4.0 (in ChainedMap)\n     * @since 0.3.0 (in Chainable)\n     *\n     * @param {boolean | undefined} [clearPropertiesThatAreChainLike=true] checks properties on the object, if they are `chain-like`, clears them as well\n     * @return {Chainable} @chainable\n     *\n     * @see https://github.com/fliphub/flipchain/issues/2\n     * @see ChainedSet\n     * @see ChainedMap\n     *\n     * @example\n     *\n     *    const chain = new Chain()\n     *    chain.set('eh', 1)\n     *    chain.entries()\n     *    //=> {eh: 1}\n     *    chain.clear()\n     *    chain.entries()\n     *    //=> {}\n     *\n     */\n    clear(clearPropertiesThatAreChainLike) {\n      this.store.clear()\n\n      if (isFalse(clearPropertiesThatAreChainLike)) return this\n\n      const keys = ObjectKeys(this)\n      for (let k = 0; k < keys.length; k++) {\n        const key = keys[k]\n        const property = this[key]\n        if (shouldClear(key, property)) this[key].clear()\n      }\n\n      return this\n    }\n\n    /**\n     * @desc calls .delete on this.store.map\n     * @since 0.3.0\n     *\n     * @param {Primitive} key on a Map: key referencing the value. on a Set: the index\n     * @return {Chainable}\n     *\n     * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/has\n     * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set/has\n     * @see ChainedSet\n     * @see ChainedMap\n     *\n     * @example\n     *\n     *    const chain = new Chain()\n     *    chain.set('eh', 1)\n     *    chain.get('eh')\n     *    // => 1\n     *    chain.delete('eh', 1)\n     *    chain.get('eh')\n     *    // => undefined\n     *\n     */\n    delete(key) {\n      this.store.delete(key)\n      return this\n    }\n\n    /**\n     * @since 0.3.0\n     * @param {any} keyOrValue key when Map, value when Set\n     * @return {boolean}\n     * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/has\n     *\n     * @example\n     *\n     *   const chain = new Chain()\n     *   chain.set('eh', 1).has('eh')\n     *   //=> true\n     *   chain.has('canada')\n     *   //=> false\n     *\n     */\n    has(keyOrValue) {\n      return this.store.has(keyOrValue)\n    }\n\n    /**\n     * @desc spreads the entries from ChainedMap.store.values\n     * @since 0.4.0\n     *\n     * @return {Array<any>} toArr(this.store.values())\n     *\n     * @NOTE look at Chainable.constructor to ensure not to use `new Array...`\n     * @NOTE moved from ChainedMap and ChainedSet to Chainable @2.0.2\n     * @NOTE this was [...] & Array.from(this.store.values())\n     *\n     * {@link https://kangax.github.io/compat-table/es6/#test-Array_static_methods compat-array-static-methods}\n     * {@link https://stackoverflow.com/questions/20069828/how-to-convert-set-to-array set-to-array}\n     * {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/values mozilla-map-values}\n     * {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set/values mozilla-set-values}\n     *\n     * @see {@link mozilla-map-values}\n     * @see {@link mozilla-set-values}\n     * @see {@link compat-array-static-methods}\n     * @see {@link set-to-array}\n     *\n     * @example\n     *\n     *  const chain = new Chain()\n     *  chain.set('eh', 1)\n     *  chain.values()\n     *  //=> [1]\n     *\n     */\n    values() {\n      const vals = []\n      this.store.forEach(v => vals.push(v))\n      return vals\n    }\n\n    /**\n     * @see http://2ality.com/2015/09/well-known-symbols-es6.html#default-tostring-tags\n     * @since 1.0.2\n     *\n     * @param {string} hint enum[default, string, number]\n     * @return {Primitive}\n     *\n     * @example\n     *\n     *  const chain = new Chain()\n     *  chain.toNumber = () => 1\n     *  +chain;\n     *  //=> 1\n     *  chain + 1\n     *  //=>\n     *\n     * @example\n     *\n     *  const chain = new Chain()\n     *  chain.toString = () => 'eh'\n     *  chain + ''\n     *  //=> 'eh'\n     *\n     */\n    [Primitive](hint) {\n      /* prettier-ignore */\n      /**\n       * hint === 'number'\n       * `s`tring is 115\n       * `n`umber is 110\n       * 110 & 4 = 1\n       * 115 & 4 = 0\n       *\n       * if (hint === 'string' && this.toJSON) return this.toJSON()\n       * else if (hint === 'number' && this.toNumber) return this.toNumber()\n       */\n      if (hint === 'number' && this.toNumber) return this.toNumber()\n\n      // hint === 'string'\n      if (this.toJSON) return this.toJSON()\n\n      // hint === 'default'\n      return this.toString()\n    }\n  }\n\n  const ChainPrototype = Chainable.prototype\n\n  /**\n   * @private\n   * @since 0.5.0\n   * @example for (var i = 0; i < chain.length; i++)\n   * @see ChainedMap.store\n   * @return {number}\n   */\n  ObjectDefine(ChainPrototype, 'length', {\n    enumerable: false,\n    get() {\n      return this.store.size\n    },\n  })\n  ObjectDefine(ChainPrototype, Instance, {\n    enumerable: false,\n    value: instance =>\n      instance && (isPrototypeOf(ChainPrototype, instance) || instance.store),\n  })\n\n  return Chainable\n}\n\nconst c = C(class {})\n\n/**\n * @since 3.0.0\n * @func\n * @example\n *\n *  class Target {}\n *  const TargetChain = Chainable.compose(Target)\n *  const chain = new TargetChain()\n *  chain instanceof Target\n *  //=> true\n *\n */\nc.compose = C\n\nmodule.exports = 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