# Changelog of `reduce-css-call`
## 2.1.7 - 2019-10-22
- Switch to a maintained jison fork ([#57](https://github.com/MoOx/reduce-css-calc/pull/57)) - @davidgovea)
## 2.1.6 - 2019-01-11
- Fixed: Incorrect calculation when subtracting (e.g. `calc(100% - calc(120px + 1em + 2em + 100px))`) ([#52](https://github.com/MoOx/reduce-css-calc/pull/53) - @sylvainpolletvillard)
## 2.1.5 - 2018-09-20
- [Avoid breaking when seeing ` constant()`` or `env()`](https://github.com/MoOx/reduce-css-calc/commit/409c9ba2cd5e06e7f8f679f7f0c3c3a14ff3e673) by @dlee
## 2.1.4 - 2018-01-22
- Prevent webpack parsing issue
(see https://github.com/zaach/jison/pull/352)
## 2.1.3 - 2017-11-27
- Fixed: Incorrect reduction for a specific case (e.g. `calc(1em + (1em - 5px))`) ([#43](https://github.com/MoOx/reduce-css-calc/pull/43) - @Justineo)
## 2.1.2 - 2017-11-26
- Fixed: Incorrect reduction of division with custom property (e.g. `calc(var(--foo) / 2)`) ([#41](https://github.com/MoOx/reduce-css-calc/issues/41) - @Semigradsky)
## 2.1.1 - 2017-10-12
- Fixed: Incorrect reduction of nested expression (e.g. `calc( (1em - calc( 10px + 1em)) / 2)`) ([#39](https://github.com/MoOx/reduce-css-calc/pull/39) - @gyoshev)
## 2.1.0 - 2017-10-10
- Added: Support for working in browsers without transpiling ([#36](https://github.com/MoOx/reduce-css-calc/pull/36) - @Semigradsky)
- Fixed: `calc(100vw - (100vw - 100%))` does not evaluate to `100%` ([#35](https://github.com/MoOx/reduce-css-calc/pull/35) - @Semigradsky)
## 2.0.5 - 2017-05-12
- Fixed: Support division with a CSS variable.
## 2.0.4 - 2017-05-09
- Fixed: CSS variable regex was overly greedy and caused a crash in some
cases. ([#27](https://github.com/MoOx/reduce-css-calc/pull/27) - @andyjansson)
## 2.0.3 - 2017-05-09
- Fixed: Regression in handling decimals without having any numbers after
the decimal place (e.g. `10.px`).
## 2.0.2 - 2017-05-08
- Fixed: Regression in consecutive subtraction handling
([#25](https://github.com/MoOx/reduce-css-calc/pull/25) - @andyjansson)
## 2.0.1 - 2017-05-08
- Fixed: Support for nested calc e.g. `calc(100% - calc(50px - 25px))`.
- Fixed: Support for CSS variables e.g. `calc(var(--mouseX) * 1px)`.
## 2.0.0 - 2017-05-08
- Rewritten with a jison parser for more accurate value parsing.
- Breaking: reduce-css-calc will now throw when trying to multiply or divide
by the same unit (e.g. `calc(200px * 20px)`), and also when trying to divide
by zero.
- Added: Better handling of zero values (e.g. `calc(100vw / 2 - 6px + 0px)`
becomes `calc(100vw / 2 - 6px)`).
- Added: Better handling of mixed time values (e.g. `calc(1s - 50ms)`
becomes `0.95s`).
- Added: Inner parentheses calculation to simplify complex expressions (e.g.
`calc(14px + 6 * ((100vw - 320px) / 448))` becomes `calc(9.71px + 1.34vw)`
with precision set to `2`).
- Fixed: `calc(1px + 1)` does not evaluate to `2px`.
([#22](https://github.com/MoOx/reduce-css-calc/pull/22) - @andyjansson)
## 1.3.0 - 2016-08-26
- Added: calc identifier from unresolved nested expressions are removed for
better browser support
([#19](https://github.com/MoOx/reduce-css-calc/pull/19) - @ben-eb)
## 1.2.8 - 2016-08-26
- Fixed: regression from 1.2.5 on calc() with value without leading 0
([#17](https://github.com/MoOx/reduce-css-calc/pull/17) - @ben-eb)
## 1.2.7 - 2016-08-22
- Fixed: regression from 1.2.5 on calc() with value without leading 0
(@MoOx)
## 1.2.6 - 2016-08-22
- Fixed: regression from 1.2.5 on calc() on multiple lines
(@MoOx)
## 1.2.5 - 2016-08-22
- Fixed: security issue due to the usage of `eval()`.
This is to avoid an arbitrary code execution.
Now operations are resolved using
[`math-expression-evaluator`](https://github.com/redhivesoftware/math-expression-evaluator)
## 1.2.4 - 2016-06-09
- Fixed: zero values are not unitless anymore.
Browsers do not calculate calc() with 0 unitless values.
http://jsbin.com/punivivipo/edit?html,css,output
([#11](https://github.com/MoOx/reduce-css-calc/pull/11))
## 1.2.3 - 2016-04-28
- Fixed: wrong rouding in some edge cases
([#10](https://github.com/MoOx/reduce-css-calc/pull/10))
## 1.2.2 - 2016-04-19
- Fixed: Don't reduce expression containing CSS variables.
([#9](https://github.com/MoOx/reduce-css-calc/pull/9))
## 1.2.1 - 2016-02-22
- Fixed: uppercase letters in units are now supported
([#8](https://github.com/MoOx/reduce-css-calc/pull/8))
## 1.2.0 - 2014-11-24
- Decimal precision is now customisable as the `precision` option
## 1.1.4 - 2014-11-12
- 5 decimals rounding for everything
## 1.1.3 - 2014-08-13
- 5 decimals rounding for percentage
## 1.1.2 - 2014-08-10
- Prevent infinite loop by adding a `Call stack overflow`
- Correctly ignore unrecognized values (safer evaluation for nested expressions,
see [postcss/postcss-calc#2](https://github.com/postcss/postcss-calc/issues/2))
- Handle rounding issues (eg: 10% \* 20% now give 2%, not 2.0000000000000004%)
## 1.1.1 - 2014-08-06
- Fix issue when using mutiples differents prefixes in the same function
## 1.1.0 - 2014-08-06
- support more complex formulas
- use `reduce-function-call`
- better error message
## 1.0.0 - 2014-08-04
First release
- based on [rework-calc](https://github.com/reworkcss/rework-calc) v1.1.0
- add error if the calc() embed an empty calc() or empty ()
- jscs + jshint added before tests
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