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/**
* This function removes any uses of CSS variables used as an alpha channel
*
* This is required for selectors like `:visited` which do not allow
* changes in opacity or external control using CSS variables.
*
* @param {import('postcss').Container} container
* @param {string[]} toRemove
*/
export function removeAlphaVariables(container, toRemove) {
container.walkDecls((decl) => {
if (toRemove.includes(decl.prop)) {
decl.remove()
return
}
for (let varName of toRemove) {
if (decl.value.includes(`/ var(${varName})`)) {
decl.value = decl.value.replace(`/ var(${varName})`, '')
}
}
})
}
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