1.0.4

CHANGELOG.md

@@ -1,3 +1,13 @@
+<a name="1.0.4"></a>
+## [1.0.4](https://github.com/dreambo8563/vue-lazy-calc/compare/v1.0.3...v1.0.4) (2019-03-19)
+
+
+### Features
+
+* **operator:** default ([74e5381](https://github.com/dreambo8563/vue-lazy-calc/commit/74e5381))
+
+
+
 <a name="1.0.3"></a>
 ## [1.0.3](https://github.com/dreambo8563/vue-lazy-calc/compare/v1.0.2...v1.0.3) (2019-03-19)
 

README.md

@@ -52,6 +52,7 @@ interface ILazyCalc {
   floor(precision?: number): ILazyCalc
   ceil(precision?: number): ILazyCalc
   do(fn: operatorFunc): ILazyCalc
+  default(fallback: any): ILazyCalc
   value(fallback?: any): any
 }
 ```
@@ -60,6 +61,7 @@ interface ILazyCalc {
 - add/subtract/divide/multiple => + - \* / (simple calculation)
 - round/floor/ceil => deal with precision of the float number
 - value => excute the declared method chain with optional fallBack value(if the result is NaN)
+- default => set default value if previous operations get NaN
 - do => accept a custormized function for the number
 
 ### Examples

package.json

@@ -1,6 +1,6 @@
 {
   "name": "vue-lazy-calc",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "private": false,
   "author": "dreambo8563",
   "main": "dist/vue-lazy-calc.umd.min.js",

src/main.ts

@@ -112,6 +112,12 @@ class LazyCalc {
     // this.operators.unshift(operation);
     return this.clone([operation, ...this.operators]);
   }
+  default(fallback: any) {
+    const operation = function(x: number | string) {
+      return Number.isNaN(+x) ? fallback : x;
+    };
+    return this.clone([operation, ...this.operators]);
+  }
   value(fallback: any = 0) {
     const result = this.compose(this.operators)(this.initValue);
     this.initValue = 0;
@@ -129,6 +135,7 @@ interface ILazyCalc {
   floor(precision?: number): ILazyCalc;
   ceil(precision?: number): ILazyCalc;
   do(fn: operatorFunc): ILazyCalc;
+  default(fallback: any): ILazyCalc;
   value(fallback?: any): any;
 }
 export type LzCalcPlugin = {

types/main.d.ts

@@ -10,6 +10,7 @@ interface ILazyCalc {
   floor(precision?: number): ILazyCalc;
   ceil(precision?: number): ILazyCalc;
   do(fn: operatorFunc): ILazyCalc;
+  default(fallback: any): ILazyCalc;
   value(fallback?: any): any;
 }
 export declare type LzCalcPlugin = {