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# ICSS — Replace Symbols
Governs the way tokens are searched & replaced during the linking stage of ICSS loading.
This is broken into its own module in case the behaviour needs to be replicated in other PostCSS plugins (i.e. [CSS Modules Constants](https://github.com/css-modules/postcss-modules-constants))
## API
```js
import replaceSymbols from "icss-replace-symbols"
replaceSymbols(css, translations)
```
Where:
- `css` is the PostCSS tree you're working with
- `translations` is an JS object of `symbol: "replacement"` pairs, where all occurrences of `symbol` are replaced with `replacement`.
## Behaviour
A symbol is a string of alphanumeric, `-` or `_` characters. A replacement can be any string. They are replaced in the following places:
- In the value of a declaration, i.e. `color: my_symbol;` or `box-shadow: 0 0 blur spread shadow-color`
- In a media expression i.e. `@media small {}` or `@media screen and not-large {}`
## License
ISC
---
Glen Maddern, 2015.
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