feat: Turtle.js.ToString() ( Fixes PoshWeb#320 )

Author: James Brundage

Types/Turtle.js/ToString.ps1

@@ -0,0 +1,41 @@
+<#
+.SYNOPSIS
+    `Turtle.js` definition
+.DESCRIPTION
+    Our JavaScipt turtle is actually contained in a PowerShell object first.
+
+    This object has a number of properties ending with `.js`.
+    
+    These are portions of the class.
+
+    To create our class, we simply join these properties together, and output a javascript object.
+#>
+param()
+
+
+
+@(
+
+# Since we are building a javascript object, we need to wrap everything in curly braces
+"{
+"
+# Indentation does not matter to most machines, but people tend to appreciate it.
+"  "
+@(foreach ($javaScriptProperty in $this.psobject.properties | Sort-Object Name) {
+    # We only want the .js properties
+    if ($javaScriptProperty.Name -notmatch '\.js$') { continue }
+    # If the property is a function, we need to handle it differently
+    if ($javaScriptProperty.value -match '^function.+?\(') {
+        # specificically, we need to remove the "function " prefix from the name
+        $predicate, $extra = $javaScriptProperty.value -split '\(', 2
+        # and then we need to reassemble it as a javascript method
+        $functionName = $predicate -replace 'function\s{1,}'
+        "${functionName}:function ($extra"
+    }
+    else {
+        # Otherwise, include it inline.
+        $javaScriptProperty.value
+    }
+    
+}) -join (',' + [Environment]::Newline + '  ')
+"}") -join ''