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Populate compiled variables map

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This commit is contained in:
RMidhunSuresh 2022-04-01 16:23:33 +05:30
parent 4350d2f264
commit 918a3e42b1
1 changed files with 22 additions and 1 deletions
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23
scripts/postcss/css-compile-variables.js
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@ -94,6 +94,23 @@ function addResolvedVariablesToRootSelector(root, {Rule, Declaration}) {
root.append(newRule);
}
function populateMapWithDerivedVariables(map, cssFileLocation) {
const location = cssFileLocation.match(/(.+)\/.+\.css/)?.[1];
if (map.has(location)) {
/**
* This postcss plugin is going to run on all theme variants of a single theme.
* But we only really need to populate the map once since theme variants only differ
* by the values of the base-variables and we don't care about values here.
*/
return;
}
const derivedVariables = new Set([
...([...resolvedMap.keys()].filter(v => !aliasMap.has(v))),
...([...aliasMap.entries()].map(([alias, variable]) => `${alias}=${variable}`))
]);
map.set(location, { "derived-variables": derivedVariables });
}
/**
* @callback derive
* @param {string} value - The base value on which an operation is applied
@ -104,6 +121,7 @@ function addResolvedVariablesToRootSelector(root, {Rule, Declaration}) {
*
* @param {Object} opts - Options for the plugin
* @param {derive} opts.derive - The callback which contains the logic for resolving derived variables
* @param {Map} opts.compiledVariables - A map that stores derived variables so that manifest source sections can be produced
*/
module.exports = (opts = {}) => {
aliasMap = new Map();
@ -125,13 +143,16 @@ module.exports = (opts = {}) => {
root.walkDecls(decl => extract(decl));
root.walkDecls(decl => resolveDerivedVariable(decl, opts.derive));
addResolvedVariablesToRootSelector(root, {Rule, Declaration});
if (opts.compiledVariables){
populateMapWithDerivedVariables(opts.compiledVariables, cssFileLocation);
}
// Publish both the base-variables and derived-variables to the other postcss-plugins
const combinedMap = new Map([...baseVariables, ...resolvedMap]);
result.messages.push({
type: "resolved-variable-map",
plugin: "postcss-compile-variables",
colorMap: combinedMap,
})
});
},
};
};