get-replaced-value.js

import { parse } from 'postcss-values-parser';
import updateEnvValue from './update-env-value';
import walkEnvFuncs from './walk-env-funcs';

// returns a value replaced with environment variables
export default (originalValue, variables) => {
	// get the ast of the original value
	const ast = parse(originalValue);

	// walk all of the css env() functions
	walkEnvFuncs(ast, node => {
		// update the environment value for the css env() function
		updateEnvValue(node, variables);
	});

	// return the stringified ast
	return String(ast);
};