From 31ae2602827406684a68dbe345efa8ddfe4b2db6 Mon Sep 17 00:00:00 2001
From: Michael Ficarra <git@michael.ficarra.me>
Date: Tue, 29 Mar 2011 17:25:09 -0400
Subject: [PATCH] unnecessarily strict {in,}equality in existence checks

---
 lib/browser.js   | 2 +-
 lib/nodes.js     | 8 ++++----
 src/nodes.coffee | 4 ++--
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/lib/browser.js b/lib/browser.js
index 7d78ce38..1b462e7d 100644
--- a/lib/browser.js
+++ b/lib/browser.js
@@ -12,7 +12,7 @@
     options.bare = true;
     return Function(CoffeeScript.compile(code, options))();
   };
-  if (typeof window == "undefined" || window === null) {
+  if (typeof window == "undefined" || window == null) {
     return;
   }
   CoffeeScript.load = function(url, options) {
diff --git a/lib/nodes.js b/lib/nodes.js
index 2dbca7ad..2850ce17 100644
--- a/lib/nodes.js
+++ b/lib/nodes.js
@@ -811,7 +811,7 @@
       }
     };
     Range.prototype.compileArray = function(o) {
-      var body, clause, i, idt, post, pre, range, result, vars, _i, _ref, _ref2, _results;
+      var body, cond, i, idt, post, pre, range, result, vars, _i, _ref, _ref2, _results;
       if (this.fromNum && this.toNum && Math.abs(this.fromNum - this.toNum) <= 20) {
         range = (function() {
           _results = [];
@@ -832,8 +832,8 @@
         body = this.compileSimple(o);
       } else {
         vars = ("" + i + " = " + this.from) + (this.to !== this.toVar ? ", " + this.to : '');
-        clause = "" + this.fromVar + " <= " + this.toVar + " ?";
-        body = "var " + vars + "; " + clause + " " + i + " <" + this.equals + " " + this.toVar + " : " + i + " >" + this.equals + " " + this.toVar + "; " + clause + " " + i + "++ : " + i + "--";
+        cond = "" + this.fromVar + " <= " + this.toVar;
+        body = "var " + vars + "; " + cond + " ? " + i + " <" + this.equals + " " + this.toVar + " : " + i + " >" + this.equals + " " + this.toVar + "; " + cond + " ? " + i + "++ : " + i + "--";
       }
       post = "{ " + result + ".push(" + i + "); }\n" + idt + "return " + result + ";\n" + o.indent;
       return "(function() {" + pre + "\n" + idt + "for (" + body + ")" + post + "}).apply(this, arguments)";
@@ -1805,7 +1805,7 @@
     Existence.prototype.compileNode = function(o) {
       var code, sym;
       code = this.expression.compile(o, LEVEL_OP);
-      code = IDENTIFIER.test(code) && !o.scope.check(code) ? this.negated ? "typeof " + code + " == \"undefined\" || " + code + " === null" : "typeof " + code + " != \"undefined\" && " + code + " !== null" : (sym = this.negated ? '==' : '!=', "" + code + " " + sym + " null");
+      code = IDENTIFIER.test(code) && !o.scope.check(code) ? this.negated ? "typeof " + code + " == \"undefined\" || " + code + " == null" : "typeof " + code + " != \"undefined\" && " + code + " != null" : (sym = this.negated ? '==' : '!=', "" + code + " " + sym + " null");
       if (o.level <= LEVEL_COND) {
         return code;
       } else {
diff --git a/src/nodes.coffee b/src/nodes.coffee
index e7894b4a..a1196ffe 100644
--- a/src/nodes.coffee
+++ b/src/nodes.coffee
@@ -1419,9 +1419,9 @@ exports.Existence = class Existence extends Base
     code = @expression.compile o, LEVEL_OP
     code = if IDENTIFIER.test(code) and not o.scope.check code
       if @negated
-        "typeof #{code} == \"undefined\" || #{code} === null"
+        "typeof #{code} == \"undefined\" || #{code} == null"
       else
-        "typeof #{code} != \"undefined\" && #{code} !== null"
+        "typeof #{code} != \"undefined\" && #{code} != null"
     else
       sym = if @negated then '==' else '!='
       "#{code} #{sym} null"