Update version

changelog.md

@@ -1,5 +1,9 @@
 # illogical changelog
 
+## 1.6.1
+
+- Bugfix on Arithmetic evaluate. Returns false when ContextValue is not present in the Context.
+
 ## 1.6.0
 
 - Added support for Arithmetic expressions within other Comparison expressions. This allows for

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@briza/illogical",
-  "version": "1.6.0",
+  "version": "1.6.1",
   "description": "A micro conditional javascript engine used to parse the raw logical and comparison expressions, evaluate the expression in the given data context, and provide access to a text form of the given expressions.",
   "main": "lib/illogical.js",
   "module": "lib/illogical.esm.js",

types/expression/arithmetic/index.d.ts

@@ -17,6 +17,16 @@ export declare abstract class Arithmetic implements Evaluable {
      * @param {Operand[]} operands Operands.
      */
     constructor(operator: string, operatorSymbol: symbol, operands: Operand[]);
+    /**
+     * Helper function to assist with arithmetic evaluation. Ensures that all
+     * operands are present and are numbers. Throws error if any operand is not a
+     * number.
+     *
+     * @param {Result[]} results
+     * @returns {number[] | false} false if any operand is missing, otherwise the
+     *   array of numbers
+     */
+    protected getResultValues(results: Result[]): number[] | false;
     /**
      * Performs the arithmetic operation on the operands evaluated values.
      * @param {Result[]} results Operand result values.