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README cleanup

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Timothy Farrell 2016-12-23 08:14:31 -06:00
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@ -2,27 +2,35 @@
TrimKit is a set of DOM and API abstractions for the purpose of better Javascript minification. For example:
```
if (a === undefined) { alert('Oops'); }
```
minifies down to:
```
if(a===void 0){alert('Oops')}
```
If we compare against undefined more than 3 times, we can save bytes by doing this:
```
function isUndefined(a) { return a === void 0; }
if (isUndefined(a)) { alert('Oops'); }
```
which minifies down to:
```
function b(a){return a===void 0}
if (b(a)){alert('Oops');}
```
With enough uses of common APIs, you can win back some bytes.
NOTE: TrimKit will help you obsess about Javascript file sizes but that does not always translate to smaller files after you apply compression. Because files using have more entropy, small, pre-compression gains can result in after compression losses. YMMV.
NOTE: TrimKit will help you obsess about Javascript file sizes but that does not always translate to smaller files after you apply compression. Because files using have more entropy, small, pre-compression gains can result in post-compression losses. YMMV.
# Abstractions