- Precomputed style function
- Skip arguments to array + join if there's only one argument (the
common case)
- Merge multiple return statements to one
To calculate the performance benefit:
```javascript
var chalk = require('./index.js');
console.time('100000 iterations');
for (var i = 0; i < 100000; i++) {
chalk.red('A string that is about 80 characters long (normal use I think?)');
}
console.timeEnd('100000 iterations');
```
Running this before this commit:
```shell
for i in {1..5}; do node time.js; done
100000 iterations: 19485ms
100000 iterations: 18933ms
100000 iterations: 19365ms
100000 iterations: 19332ms
100000 iterations: 18660ms
```
After:
```shell
100000 iterations: 268ms
100000 iterations: 261ms
100000 iterations: 264ms
100000 iterations: 259ms
100000 iterations: 254ms
```
Performance gain, taking the middle result of both:
```shell
19332 / 261 = 74.~
```
Closes#16
green(a + blue(b) + c) will now look the same as green(a) +
blue(b) + green(c), as expected. In the previous implementation the
output would have been green(a) + blue(b) + c, because the reset code of
the second expression would close all expressions around it as well.
Now this reset code is replaced by a start code of the outer lying
expression, both stopping the inner and re-starting the outer.
