Rename duplicateItems to duplicateItemsAllowed for clarity

README.md

@@ -69,7 +69,7 @@ Or include Choices directly:
     removeItems: true,
     removeItemButton: false,
     editItems: false,
-    duplicateItems: true,
+    duplicateItemsAllowed: true,
     delimiter: ',',
     paste: true,
     searchEnabled: true,
@@ -256,12 +256,12 @@ Pass an array of objects:
 
 **Usage:** Whether a user can edit items. An item's value can be edited by pressing the backspace.
 
-### duplicateItems
+### duplicateItemsAllowed
 **Type:** `Boolean` **Default:** `true`
 
 **Input types affected:** `text`, `select-multiple`
 
-**Usage:** Whether each inputted/chosen item should be unique.
+**Usage:** Whether duplicate inputted/chosen items are allowed
 
 ### delimiter
 **Type:** `String` **Default:** `,`

public/assets/scripts/choices.js

@@ -1,4 +1,4 @@
-/*! choices.js v4.0.0 | (c) 2018 Josh Johnson | https://github.com/jshjohnson/Choices#readme */ 
+/*! choices.js v4.0.0 | (c) 2018 Josh Johnson | https://github.com/jshjohnson/Choices#readme */
 (function webpackUniversalModuleDefinition(root, factory) {
    //CommonJS2
 	if(typeof exports === 'object' && typeof module === 'object')
@@ -577,7 +577,7 @@ var DEFAULT_CONFIG = exports.DEFAULT_CONFIG = {
   removeItems: true,
   removeItemButton: false,
   editItems: false,
-  duplicateItems: true,
+  duplicateItemsAllowed: true,
   delimiter: ',',
   paste: true,
   searchEnabled: true,
@@ -1843,27 +1843,27 @@ if (false) {
 /* 31 */
 /***/ (function(module, exports) {
 
-var g;
-
-// This works in non-strict mode
-g = (function() {
-	return this;
-})();
-
-try {
-	// This works if eval is allowed (see CSP)
-	g = g || Function("return this")() || (1,eval)("this");
-} catch(e) {
-	// This works if the window reference is available
-	if(typeof window === "object")
-		g = window;
-}
-
-// g can still be undefined, but nothing to do about it...
-// We return undefined, instead of nothing here, so it's
-// easier to handle this case. if(!global) { ...}
-
-module.exports = g;
+var g;
+
+// This works in non-strict mode
+g = (function() {
+	return this;
+})();
+
+try {
+	// This works if eval is allowed (see CSP)
+	g = g || Function("return this")() || (1,eval)("this");
+} catch(e) {
+	// This works if the window reference is available
+	if(typeof window === "object")
+		g = window;
+}
+
+// g can still be undefined, but nothing to do about it...
+// We return undefined, instead of nothing here, so it's
+// easier to handle this case. if(!global) { ...}
+
+module.exports = g;
 
 
 /***/ }),
@@ -2975,7 +2975,7 @@ var Choices = function () {
           canAddItem = (0, _utils.regexFilter)(value, this.config.regexFilter);
         }
 
-        if (!this.config.duplicateItems && !valueAlreadyExists && canAddItem) {
+        if (!this.config.duplicateItemsAllowed && !valueAlreadyExists && canAddItem) {
           canAddItem = false;
           notice = (0, _utils.isType)('Function', this.config.uniqueItemText) ? this.config.uniqueItemText(value) : this.config.uniqueItemText;
         }
@@ -4113,10 +4113,10 @@ module.exports = Choices;
 
 /*!
  * Fuse.js v3.2.0 - Lightweight fuzzy-search (http://fusejs.io)
- * 
+ *
  * Copyright (c) 2012-2017 Kirollos Risk (http://kiro.me)
  * All Rights Reserved. Apache Software License 2.0
- * 
+ *
  * http://www.apache.org/licenses/LICENSE-2.0
  */
 (function webpackUniversalModuleDefinition(root, factory) {
@@ -5987,30 +5987,30 @@ var result = Object(__WEBPACK_IMPORTED_MODULE_0__ponyfill_js__["a" /* default */
 /* 66 */
 /***/ (function(module, exports) {
 
-module.exports = function(originalModule) {
-	if(!originalModule.webpackPolyfill) {
-		var module = Object.create(originalModule);
-		// module.parent = undefined by default
-		if(!module.children) module.children = [];
-		Object.defineProperty(module, "loaded", {
-			enumerable: true,
-			get: function() {
-				return module.l;
-			}
-		});
-		Object.defineProperty(module, "id", {
-			enumerable: true,
-			get: function() {
-				return module.i;
-			}
-		});
-		Object.defineProperty(module, "exports", {
-			enumerable: true,
-		});
-		module.webpackPolyfill = 1;
-	}
-	return module;
-};
+module.exports = function(originalModule) {
+	if(!originalModule.webpackPolyfill) {
+		var module = Object.create(originalModule);
+		// module.parent = undefined by default
+		if(!module.children) module.children = [];
+		Object.defineProperty(module, "loaded", {
+			enumerable: true,
+			get: function() {
+				return module.l;
+			}
+		});
+		Object.defineProperty(module, "id", {
+			enumerable: true,
+			get: function() {
+				return module.i;
+			}
+		});
+		Object.defineProperty(module, "exports", {
+			enumerable: true,
+		});
+		module.webpackPolyfill = 1;
+	}
+	return module;
+};
 
 
 /***/ }),

public/index.html

@@ -316,13 +316,13 @@
 
       var textUniqueVals = new Choices('#choices-text-unique-values', {
         paste: false,
-        duplicateItems: false,
+        duplicateItemsAllowed: false,
         editItems: true,
       });
 
       var texti18n = new Choices('#choices-text-i18n', {
         paste: false,
-        duplicateItems: false,
+        duplicateItemsAllowed: false,
         editItems: true,
         maxItemCount: 5,
         addItemText: function(value) {

src/scripts/choices.js

@@ -802,7 +802,7 @@ class Choices {
       : this.config.addItemText;
 
     if (!this._isSelectOneElement) {
-      const valueAlreadyExists = !existsInArray(activeItems, value);
+      const isDuplicateValue = existsInArray(activeItems, value);
 
       if (
         this.config.maxItemCount > 0 &&
@@ -828,7 +828,11 @@ class Choices {
         canAddItem = regexFilter(value, this.config.regexFilter);
       }
 
-      if (!this.config.duplicateItems && !valueAlreadyExists && canAddItem) {
+      if (
+        !this.config.duplicateItemsAllowed &&
+        isDuplicateValue &&
+        canAddItem
+      ) {
         canAddItem = false;
         notice = isType('Function', this.config.uniqueItemText)
           ? this.config.uniqueItemText(value)

src/scripts/constants.js

@@ -39,7 +39,7 @@ export const DEFAULT_CONFIG = {
   removeItems: true,
   removeItemButton: false,
   editItems: false,
-  duplicateItems: true,
+  duplicateItemsAllowed: true,
   delimiter: ',',
   paste: true,
   searchEnabled: true,

src/scripts/constants.test.js

@@ -59,7 +59,7 @@ describe('constants', () => {
         expect(DEFAULT_CONFIG.removeItems).to.be.a('boolean');
         expect(DEFAULT_CONFIG.removeItemButton).to.be.a('boolean');
         expect(DEFAULT_CONFIG.editItems).to.be.a('boolean');
-        expect(DEFAULT_CONFIG.duplicateItems).to.be.a('boolean');
+        expect(DEFAULT_CONFIG.duplicateItemsAllowed).to.be.a('boolean');
         expect(DEFAULT_CONFIG.delimiter).to.be.a('string');
         expect(DEFAULT_CONFIG.paste).to.be.a('boolean');
         expect(DEFAULT_CONFIG.searchEnabled).to.be.a('boolean');

types/index.d.ts

@@ -320,7 +320,7 @@ declare namespace Choices {
      *
      * @default true
      */
-    duplicateItems?: boolean;
+    duplicateItemsAllowed?: boolean;
 
     /**
      * What divides each value. The default delimiter seperates each value with a comma: `"Value 1, Value 2, Value 3"`.