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import { getReferences } from "./references"
import type { TokenTransformer } from "./types"
export const addCssVariables: TokenTransformer = {
type: "extensions",
enforce: "pre",
name: "tokens/css-var",
transform(token, dictionary) {
const { prefix, formatCssVar } = dictionary
const { negative, originalPath } = token.extensions
const path = negative ? originalPath : token.path
return {
cssVar: formatCssVar(path.filter(Boolean), prefix),
}
},
}
export const addConditionalCssVariables: TokenTransformer = {
enforce: "post",
type: "value",
name: "tokens/conditionals",
transform(token, dictionary) {
const { prefix, formatCssVar } = dictionary
const refs = getReferences(token.value)
if (!refs.length) return token.value
refs.forEach((ref) => {
const variable = formatCssVar(ref.split("."), prefix)
token.value = token.value.replace(`{${variable.ref}}`, variable)
})
return token.value
},
}
export const addColorPalette: TokenTransformer = {
type: "extensions",
enforce: "pre",
name: "tokens/colors/colorPalette",
match(token) {
return token.extensions.category === "colors" && !token.extensions.virtual
},
transform(token, dict) {
let path = token.path.slice()
path.pop()
path.shift()
if (path.length === 0) {
const newPath = [...token.path]
newPath.shift()
path = newPath
}
if (path.length === 0) {
return {}
}
const roots = path.reduce<string[][]>((acc, _, i, arr) => {
const next = arr.slice(0, i + 1)
acc.push(next)
return acc
}, [])
const root = path[0]
const value = dict.formatTokenName(path)
const keys = token.path
.slice(token.path.indexOf(root) + 1)
.reduce<string[][]>((acc, _, i, arr) => {
acc.push(arr.slice(i))
return acc
}, [])
if (keys.length === 0) {
keys.push([""])
}
return {
colorPalette: { value, roots, keys },
}
},
}
export const tokenTransforms = [
addCssVariables,
addConditionalCssVariables,
addColorPalette,
]
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