Add additional coercion rules

Author: TotalTechGeek

compiler.js

@@ -112,7 +112,7 @@ function isDeepSync (method, engine) {
 
   if (Array.isArray(method)) return method.every(i => isDeepSync(i, engine))
 
-  if (typeof method === 'object') {
+  if (method && typeof method === 'object') {
     const func = Object.keys(method)[0]
 
     const lower = method[func]

defaultMethods.js

@@ -52,6 +52,7 @@ function isSyncDeep (method, engine, buildState) {
 
 const defaultMethods = {
   '+': (data) => {
+    if (!data) return 0
     if (typeof data === 'string') return +data
     if (typeof data === 'number') return +data
     if (typeof data === 'boolean') return +data
@@ -70,6 +71,7 @@ const defaultMethods = {
     return res
   },
   '-': (data) => {
+    if (!data) return 0
     if (typeof data === 'string') return -data
     if (typeof data === 'number') return -data
     if (typeof data === 'boolean') return -data

suites/divide.json

@@ -129,6 +129,18 @@
         "result": 0,
         "data": null
     },
+    {
+        "description": "Divide Operator with Single Operand, Direct (Empty String)",
+        "rule": { "/": "" },
+        "result": 0,
+        "data": null
+    },
+    {
+        "description": "Divide Operator with a Single Operand, Direct (null)",
+        "rule": { "/": null },
+        "result": 0,
+        "data": null
+    },
     {
         "description": "Divide with val",
         "rule": { "/": [{ "val": "x" }, { "val": "y" }] },

suites/minus.json

@@ -38,7 +38,7 @@
     },
     {
         "description": "Subtraction with Multiple Value Types",
-        "rule": { "-": [1, "2", 3, "4", true, false] },
+        "rule": { "-": [1, "2", 3, "4", "", true, false, null] },
         "result": -9,
         "data": null
     },
@@ -97,6 +97,18 @@
         "result": 0,
         "data": null
     },
+    {
+        "description": "Minus Operator with Single Operand, Direct (Empty String)",
+        "rule": { "-": "" },
+        "result": 0,
+        "data": null
+    },
+    {
+        "description": "Minus Operator with a Single Operand, Direct (null)",
+        "rule": { "-": null },
+        "result": 0,
+        "data": null
+    },
     {
         "description": "Subtraction with val",
         "rule": { "-": [{ "val": "x" }, { "val": "y" }] },

suites/modulo.json

@@ -140,6 +140,18 @@
         "result": 0,
         "data": null
     },
+    {
+        "description": "Modulo Operator with Single Operand, Direct (Empty String)",
+        "rule": { "%": "" },
+        "result": 0,
+        "data": null
+    },
+    {
+        "description": "Modulo Operator with a Single Operand, Direct (null)",
+        "rule": { "%": null },
+        "result": 0,
+        "data": null
+    },
     {
         "description": "Modulo with val",
         "rule": { "%": [{ "val": "x" }, { "val": "y" }] },

suites/multiply.json

@@ -48,6 +48,12 @@
         "result": 1,
         "data": null
     },
+    {
+        "description": "Multiply with Multiple Value Types (3)",
+        "rule": { "*": ["1", null] },
+        "result": 0,
+        "data": null
+    },
     {
         "description": "Multiply with Single Operand (Number)",
         "rule": { "*": [1] },
@@ -121,6 +127,18 @@
         "result": 0,
         "data": null
     },
+    {
+        "description": "Multiply Operator with Single Operand, Direct (Empty String)",
+        "rule": { "*": "" },
+        "result": 0,
+        "data": null
+    },
+    {
+        "description": "Multiply Operator with a Single Operand, Direct (null)",
+        "rule": { "*": null },
+        "result": 0,
+        "data": null
+    },
     {
         "description": "Multiply with val",
         "rule": { "*": [{ "val": "x" }, { "val": "y" }] },

suites/plus.json

@@ -38,7 +38,7 @@
     },
     {
         "description": "Addition with Multiple Value Types",
-        "rule": { "+": [1, "2", 3, "4", true, false] },
+        "rule": { "+": [1, "2", 3, "4", "", true, false, null] },
         "result": 11,
         "data": null
     },
@@ -117,6 +117,18 @@
         "result": 0,
         "data": null
     },
+    {
+        "description": "Plus Operator with Single Operand, Direct (Empty String)",
+        "rule": { "+": "" },
+        "result": 0,
+        "data": null
+    },
+    {
+        "description": "Plus Operator with a Single Operand, Direct (null)",
+        "rule": { "+": null },
+        "result": 0,
+        "data": null
+    },
     {
         "description": "Addition with val",
         "rule": { "+": [{ "val": "x" }, { "val": "y" }] },