From 507f2ec544ea84817b48733e3dffab7f2d3f32d3 Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Mon, 27 May 2013 13:04:26 -0700
Subject: [PATCH] Avoid minifier tricks for boolean literals in expressions.

Former-commit-id: a02445f97a81c330018247140784818be830595f
---
 build/post-compile.js         | 13 +++++++++++++
 dist/lodash.compat.min.js     | 22 +++++++++++-----------
 dist/lodash.min.js            | 12 ++++++------
 dist/lodash.underscore.min.js |  2 +-
 4 files changed, 31 insertions(+), 18 deletions(-)

diff --git a/build/post-compile.js b/build/post-compile.js
index 310578134..c7eb6dc0e 100644
--- a/build/post-compile.js
+++ b/build/post-compile.js
@@ -37,6 +37,19 @@
         '\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000"'
       );
 
+    // replace vars for `false` and `true` with boolean literals
+    [/(\w+)\s*=\s*!1\b/.exec(source), /(\w+)\s*=\s*!0\b/.exec(source)].forEach(function(varName, index) {
+      if (varName) {
+        varName = varName[1];
+        source = source.replace(RegExp('([!=]==\\s*)' + varName + '|' + varName + '(\\s*[!=]==)', 'g'), '$1' + !!index + '$2');
+      }
+    });
+
+    // replace `!1` and `!0` in expressions with `false` and `true` values
+    source = source
+      .replace(/([!=]==\s*)!1|!1(\s*[!=]==)/g, '$1false$2')
+      .replace(/([!=]==\s*)!0|!0(\s*[!=]==)/g, '$1true$2');
+
     // flip `typeof` expressions to help optimize Safari and
     // correct the AMD module definition for AMD build optimizers
     // (e.g. from `"number" == typeof x` to `typeof x == "number")
diff --git a/dist/lodash.compat.min.js b/dist/lodash.compat.min.js
index 6fb6238b4..deae2acce 100644
--- a/dist/lodash.compat.min.js
+++ b/dist/lodash.compat.min.js
@@ -9,14 +9,14 @@
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