@x-oasis/unique-array-object - npm Package Compare versions

Comparing version 0.1.1 to 0.1.2

dist/index.d.ts

 declare const _default: (arr: {
     [key: string]: any;
-}[], getter: string | Function) => {
+}[], getter: string | ((item: any) => any), keepFirst?: boolean) => {
     [key: string]: any;
 }[];
 export default _default;

dist/unique-array-object.cjs.development.js

@@ -5,8 +5,25 @@ 'use strict';
 
-var index = (function (arr, getter) {
-  return [].concat(new Map(arr.filter(function (v) {
-    return v;
-  }).map(function (item) {
-    return [typeof getter === 'function' ? getter(item) : item[getter], item];
-  })).values());
+var shimFindLastIndex = function shimFindLastIndex(arr, filter) {
+  if (typeof Array.prototype.findLastIndex === 'function') return Array.prototype.findLastIndex.apply(arr, [filter]);
+  var len = arr.length;
+  for (var index = len - 1; index >= 0; index--) {
+    var item = arr[index];
+    if (filter(item, index)) return index;
+  }
+  return -1;
+};
+var index = (function (arr, getter, keepFirst) {
+  var filter = function filter(item, _item) {
+    return typeof getter === 'function' ? getter(_item) === getter(item) : _item[getter] === item[getter];
+  };
+  if (keepFirst) return arr.filter(function (item, index, _arr) {
+    return _arr.findIndex(function (_item) {
+      return filter(item, _item);
+    }) === index;
+  });
+  return arr.filter(function (item, index, _arr) {
+    return shimFindLastIndex(arr, function (_item) {
+      return filter(item, _item);
+    }) === index;
+  });
 });
@@ -13,0 +30,0 @@

dist/unique-array-object.cjs.production.min.js

@@ -1,2 +0,2 @@
-"use strict";Object.defineProperty(exports,"__esModule",{value:!0}),exports.default=function(e,t){return[].concat(new Map(e.filter((function(e){return e})).map((function(e){return["function"==typeof t?t(e):e[t],e]}))).values())};
+"use strict";Object.defineProperty(exports,"__esModule",{value:!0}),exports.default=function(n,t,r){var e=function(n,r){return"function"==typeof t?t(r)===t(n):r[t]===n[t]};return n.filter(r?function(n,t,r){return r.findIndex((function(t){return e(n,t)}))===t}:function(t,r,u){return function(n,t){if("function"==typeof Array.prototype.findLastIndex)return Array.prototype.findLastIndex.apply(n,[t]);for(var r=n.length-1;r>=0;r--)if(t(n[r]))return r;return-1}(n,(function(n){return e(t,n)}))===r})};
 //# sourceMappingURL=unique-array-object.cjs.production.min.js.map

dist/unique-array-object.esm.js

@@ -1,7 +0,24 @@
-var index = (function (arr, getter) {
-  return [].concat(new Map(arr.filter(function (v) {
-    return v;
-  }).map(function (item) {
-    return [typeof getter === 'function' ? getter(item) : item[getter], item];
-  })).values());
+var shimFindLastIndex = function shimFindLastIndex(arr, filter) {
+  if (typeof Array.prototype.findLastIndex === 'function') return Array.prototype.findLastIndex.apply(arr, [filter]);
+  var len = arr.length;
+  for (var index = len - 1; index >= 0; index--) {
+    var item = arr[index];
+    if (filter(item, index)) return index;
+  }
+  return -1;
+};
+var index = (function (arr, getter, keepFirst) {
+  var filter = function filter(item, _item) {
+    return typeof getter === 'function' ? getter(_item) === getter(item) : _item[getter] === item[getter];
+  };
+  if (keepFirst) return arr.filter(function (item, index, _arr) {
+    return _arr.findIndex(function (_item) {
+      return filter(item, _item);
+    }) === index;
+  });
+  return arr.filter(function (item, index, _arr) {
+    return shimFindLastIndex(arr, function (_item) {
+      return filter(item, _item);
+    }) === index;
+  });
 });
@@ -8,0 +25,0 @@

package.json

 {
   "name": "@x-oasis/unique-array-object",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "description": "unique-array-object function",
@@ -5,0 +5,0 @@ "main": "dist/index.js",

README.md

 # @x-oasis/unique-array-object
 
-keep the last occurrence
+keep the last on default
 
@@ -21,8 +21,8 @@ ## Installation
 
-uniqueArrayObject(state)
+uniqueArrayObject(state, 'name')
 
 // output
 // [
+//   { name: 'imageViewable', value: 9 }, 
 //   { name: 'viewable', value: 8 },
-//   { name: 'imageViewable', value: 9 }, 
 // ]
@@ -29,0 +29,0 @@ ```

src/index.ts

 // https://stackoverflow.com/a/56757215
 
+const shimFindLastIndex = (arr: Array<any>, filter: Function) => {
+  // @ts-ignore
+  if (typeof Array.prototype.findLastIndex === 'function')
+    // @ts-ignore
+    return Array.prototype.findLastIndex.apply(arr, [filter]);
+
+  const len = arr.length;
+  for (let index = len - 1; index >= 0; index--) {
+    const item = arr[index];
+    if (filter(item, index)) return index;
+  }
+  return -1;
+};
+
 export default (
@@ -7,14 +21,31 @@ arr: Array<{
   }>,
-  getter: string | Function
+  getter: string | { (item: any): any },
+  keepFirst?: boolean
 ) => {
-  return [
-    ...new Map(
-      arr
-        .filter((v) => v)
-        .map((item) => [
-          typeof getter === 'function' ? getter(item) : item[getter],
-          item,
-        ])
-    ).values(),
-  ];
+  const filter = (item, _item) =>
+    typeof getter === 'function'
+      ? getter(_item) === getter(item)
+      : _item[getter] === item[getter];
+
+  if (keepFirst)
+    return arr.filter(
+      (item, index, _arr) =>
+        _arr.findIndex((_item) => filter(item, _item)) === index
+    );
+
+  return arr.filter(
+    (item, index, _arr) =>
+      shimFindLastIndex(arr, (_item) => filter(item, _item)) === index
+  );
 };
+
+// return [
+//   ...new Map(
+//     arr
+//       .filter((v) => v)
+//       .map((item) => [
+//         typeof getter === 'function' ? getter(item) : item[getter],
+//         item,
+//       ])
+//   ).values(),
+// ]

No alert changes

Improved metrics

Total package byte prevSize

12541

increased by140.48%

Lines of code

113

increased by117.31%

No dependency changes