Switch back to throw NaN for performance reasons, also commit an async compiler optimization

Author: TotalTechGeek

compiler.js

@@ -220,7 +220,12 @@ function buildString (method, buildState = {}) {
     } else {
       asyncDetected = Boolean(async && engine.methods[func] && engine.methods[func].asyncMethod)
       const argCount = countArguments(asyncDetected ? engine.methods[func].asyncMethod : engine.methods[func].method)
-      const argumentsNeeded = argumentsDict[argCount - 1] || argumentsDict[2]
+      let argumentsNeeded = argumentsDict[argCount - 1] || argumentsDict[2]
+
+      if (asyncDetected && typeof engine.methods[func][Sync] === 'function' && engine.methods[func][Sync](lower, { engine })) {
+        asyncDetected = false
+        argumentsNeeded = argumentsNeeded.replace('engine', 'engine.fallback')
+      }
 
       if (engine.methods[func] && !engine.methods[func].lazy) {
         return makeAsync(`engine.methods["${func}"]${asyncDetected ? '.asyncMethod' : '.method'}(${coerce}(` + buildString(lower, buildState) + ')' + argumentsNeeded + ')')

defaultMethods.js

@@ -59,58 +59,58 @@ const defaultMethods = {
     if (typeof data === 'string') return precoerceNumber(+data)
     if (typeof data === 'number') return precoerceNumber(+data)
     if (typeof data === 'boolean') return precoerceNumber(+data)
-    if (typeof data === 'object' && !Array.isArray(data)) throw new Error('NaN')
+    if (typeof data === 'object' && !Array.isArray(data)) throw NaN
     let res = 0
     for (let i = 0; i < data.length; i++) {
-      if (data[i] && typeof data[i] === 'object') throw new Error('NaN')
+      if (data[i] && typeof data[i] === 'object') throw NaN
       res += +data[i]
     }
-    if (Number.isNaN(res)) throw new Error('NaN')
+    if (Number.isNaN(res)) throw NaN
     return res
   },
   '*': (data) => {
     let res = 1
     for (let i = 0; i < data.length; i++) {
-      if (data[i] && typeof data[i] === 'object') throw new Error('NaN')
+      if (data[i] && typeof data[i] === 'object') throw NaN
       res *= +data[i]
     }
-    if (Number.isNaN(res)) throw new Error('NaN')
+    if (Number.isNaN(res)) throw NaN
     return res
   },
   '/': (data) => {
-    if (data[0] && typeof data[0] === 'object') throw new Error('NaN')
+    if (data[0] && typeof data[0] === 'object') throw NaN
     let res = +data[0]
     for (let i = 1; i < data.length; i++) {
-      if ((data[i] && typeof data[i] === 'object') || !data[i]) throw new Error('NaN')
+      if ((data[i] && typeof data[i] === 'object') || !data[i]) throw NaN
       res /= +data[i]
     }
-    if (Number.isNaN(res)) throw new Error('NaN')
+    if (Number.isNaN(res)) throw NaN
     return res
   },
   '-': (data) => {
     if (!data) return 0
     if (typeof data === 'string') return precoerceNumber(-data)
     if (typeof data === 'number') return precoerceNumber(-data)
     if (typeof data === 'boolean') return precoerceNumber(-data)
-    if (typeof data === 'object' && !Array.isArray(data)) throw new Error('NaN')
-    if (data[0] && typeof data[0] === 'object') throw new Error('NaN')
+    if (typeof data === 'object' && !Array.isArray(data)) throw NaN
+    if (data[0] && typeof data[0] === 'object') throw NaN
     if (data.length === 1) return -data[0]
     let res = data[0]
     for (let i = 1; i < data.length; i++) {
-      if (data[i] && typeof data[i] === 'object') throw new Error('NaN')
+      if (data[i] && typeof data[i] === 'object') throw NaN
       res -= +data[i]
     }
-    if (Number.isNaN(res)) throw new Error('NaN')
+    if (Number.isNaN(res)) throw NaN
     return res
   },
   '%': (data) => {
-    if (data[0] && typeof data[0] === 'object') throw new Error('NaN')
+    if (data[0] && typeof data[0] === 'object') throw NaN
     let res = +data[0]
     for (let i = 1; i < data.length; i++) {
-      if (data[i] && typeof data[i] === 'object') throw new Error('NaN')
+      if (data[i] && typeof data[i] === 'object') throw NaN
       res %= +data[i]
     }
-    if (Number.isNaN(res)) throw new Error('NaN')
+    if (Number.isNaN(res)) throw NaN
     return res
   },
   error: (type) => {

utilities/downgrade.js

@@ -3,8 +3,8 @@
  * @param {any} item
  */
 export function precoerceNumber (item) {
-  if (Number.isNaN(item)) throw new Error('NaN')
+  if (Number.isNaN(item)) throw NaN
   if (!item) return item
-  if (typeof item === 'object') throw new Error('NaN')
+  if (typeof item === 'object') throw NaN
   return item
 }