fix --no-warn flag

scripts/test

@@ -183,7 +183,7 @@
 
     try {
       console.log(filename);
-      LiveScript.run(code, { filename: filename, map: 'embedded', noWarn: true });
+      LiveScript.run(code, { filename: filename, map: 'embedded', warn: false });
     } catch (e) {
       ++failedTests;
 
@@ -209,7 +209,7 @@
         col = ref[2];
         code = LiveScript.compile(code, {
           bare: true,
-          noWarn: true
+          warn: false
         });
       }
 

src/ast.ls

@@ -1430,7 +1430,7 @@ class exports.Binary extends Node
                     return @compileRegexEquals o, that
                 if @op is \=== and (@first instanceof Literal and @second instanceof Literal)
                 and @first.is-what! isnt @second.is-what!
-                    @warn "strict comparison of two different types will always be false: #{@first.value} == #{@second.value}" unless o.no-warn
+                    @warn "strict comparison of two different types will always be false: #{@first.value} == #{@second.value}" if o.warn
             return @compileChain o if COMPARER.test @op and COMPARER.test @second.op
         @first <<< {@front}
         code = [(@first .compile o, level = LEVEL_OP + PREC[@op]), " ", (@mapOp @op), " ", (@second.compile o, level)]
@@ -1918,7 +1918,7 @@ class exports.In extends Node implements Negatable
         if array not instanceof Arr
             return sn(this, (if @negated then \! else ''), (util \in), "(", (@item.compile o, LEVEL_LIST), ", ", (array.compile o, LEVEL_LIST), ")")
         if items.length == 0
-            @warn "value can never be `in` an empty array" unless o.no-warn
+            @warn "value can never be `in` an empty array" if o.warn
             value = "#{!!@negated}"
             return do
                 if @item.is-complex!

src/command.ls

@@ -113,7 +113,7 @@ switch
       o.const
       o.map
       o.header
-      o.no-warn
+      o.warn
   }
   t       = {input, options}
   try

src/index.ls

@@ -33,6 +33,7 @@ exports <<<
 
     # Compiles a string of LiveScript code to JavaScript.
     compile: (code, options = {}) ->
+      options.warn ?= true
       options.header ?= true
       options.header = "// Generated by LiveScript #{exports.VERSION}\n" if options.header is true
       try

src/options.ls

@@ -97,9 +97,10 @@ module.exports = optionator do
           alias: 'm'
           type: 'String'
           description: "generate source maps - either: 'none', 'linked', 'linked-src', 'embedded', or 'debug'"
-        * option: 'no-warn'
+        * option: 'warn'
           type: 'Boolean'
           description: 'suppress compiler warnings'
+          default: 'true'
     mutually-exclusive:
         * [ <[ compile output ]> \ast \tokens \lex ]
         ...

test/operator.ls

@@ -92,10 +92,10 @@ ok not ("2" in [1 2 3])
 # Optimize `in` for one- and zero-element array literals
 eq "x() === 0;"    LiveScript.compile 'x! in [0]'     {+bare,-header}
 eq "x() !== 0;"    LiveScript.compile 'x! not in [0]' {+bare,-header}
-eq "(x(), false);" LiveScript.compile 'x! in [ ]'     {+bare,-header,+no-warn}
-eq "(x(), true);"  LiveScript.compile 'x! not in [ ]' {+bare,-header,+no-warn}
-eq "false;"        LiveScript.compile 'x in [ ]'      {+bare,-header,+no-warn}
-eq "true;"         LiveScript.compile 'x not in [ ]'  {+bare,-header,+no-warn}
+eq "(x(), false);" LiveScript.compile 'x! in [ ]'     {+bare,-header,-warn}
+eq "(x(), true);"  LiveScript.compile 'x! not in [ ]' {+bare,-header,-warn}
+eq "false;"        LiveScript.compile 'x in [ ]'      {+bare,-header,-warn}
+eq "true;"         LiveScript.compile 'x not in [ ]'  {+bare,-header,-warn}
 
 # Non-spaced values still work.
 x = 10