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clean.js
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213 lines (187 loc) · 5.48 KB
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import isFrontMatter from "../utils/front-matter/is-front-matter.js";
const ignoredProperties = new Set([
"raw", // front-matter
"raws",
"sourceIndex",
"source",
"before",
"after",
"trailingComma",
"spaces",
]);
function clean(original, cloned, parent) {
if (isFrontMatter(original) && original.language === "yaml") {
delete cloned.value;
}
if (
original.type === "css-comment" &&
parent.type === "css-root" &&
parent.nodes.length > 0
) {
// --insert-pragma
// first non-front-matter comment
if (
parent.nodes[0] === original ||
(isFrontMatter(parent.nodes[0]) && parent.nodes[1] === original)
) {
/**
* something
*
* @format
*/
delete cloned.text;
// standalone pragma
if (/^\*\s*@(?:format|prettier)\s*$/u.test(original.text)) {
return null;
}
}
// Last comment is not parsed, when omitting semicolon, #8675
if (parent.type === "css-root" && parent.nodes.at(-1) === original) {
return null;
}
}
if (original.type === "value-root") {
delete cloned.text;
}
if (
original.type === "media-query" ||
original.type === "media-query-list" ||
original.type === "media-feature-expression"
) {
delete cloned.value;
}
if (original.type === "css-rule") {
delete cloned.params;
}
if (
(original.type === "media-feature" ||
original.type === "media-keyword" ||
original.type === "media-type" ||
original.type === "media-unknown" ||
original.type === "media-url" ||
original.type === "media-value" ||
original.type === "selector-attribute" ||
original.type === "selector-string" ||
original.type === "selector-class" ||
original.type === "selector-combinator" ||
original.type === "value-string") &&
original.value
) {
cloned.value = cleanCSSStrings(original.value);
}
if (original.type === "selector-combinator") {
cloned.value = cloned.value.replaceAll(/\s+/gu, " ");
}
if (original.type === "media-feature") {
cloned.value = cloned.value.replaceAll(" ", "");
}
if (
(original.type === "value-word" &&
((original.isColor && original.isHex) ||
["initial", "inherit", "unset", "revert"].includes(
original.value.toLowerCase(),
))) ||
original.type === "media-feature" ||
original.type === "selector-root-invalid" ||
original.type === "selector-pseudo"
) {
cloned.value = cloned.value.toLowerCase();
}
if (original.type === "css-decl") {
cloned.prop = original.prop.toLowerCase();
}
if (original.type === "css-atrule" || original.type === "css-import") {
cloned.name = original.name.toLowerCase();
}
if (original.type === "value-number") {
cloned.unit = original.unit.toLowerCase();
}
if (original.type === "value-unknown") {
cloned.value = cloned.value.replaceAll(/;$/gu, "");
}
if (original.type === "selector-attribute") {
cloned.attribute = original.attribute.trim();
if (original.namespace && typeof original.namespace === "string") {
cloned.namespace = original.namespace.trim() || true;
}
if (original.value) {
cloned.value = cloned.value.trim().replaceAll(/^["']|["']$/gu, "");
delete cloned.quoted;
}
}
if (
(original.type === "media-value" ||
original.type === "media-type" ||
original.type === "value-number" ||
original.type === "selector-root-invalid" ||
original.type === "selector-class" ||
original.type === "selector-combinator" ||
original.type === "selector-tag") &&
original.value
) {
cloned.value = cloned.value.replaceAll(
/([\d+.e-]+)([a-z]*)/giu,
(match, numStr, unit) => {
const num = Number(numStr);
return Number.isNaN(num) ? match : num + unit.toLowerCase();
},
);
}
if (original.type === "selector-tag") {
const lowercasedValue = cloned.value.toLowerCase();
if (["from", "to"].includes(lowercasedValue)) {
cloned.value = lowercasedValue;
}
}
// Workaround when `postcss-values-parser` parse `not`, `and` or `or` keywords as `value-func`
if (
original.type === "css-atrule" &&
original.name.toLowerCase() === "supports"
) {
delete cloned.value;
}
// Workaround for SCSS nested properties
if (original.type === "selector-unknown") {
delete cloned.value;
}
// Workaround for SCSS arbitrary arguments
if (original.type === "value-comma_group") {
const index = original.groups.findIndex(
(node) => node.type === "value-number" && node.unit === "...",
);
if (index !== -1) {
cloned.groups[index].unit = "";
cloned.groups.splice(index + 1, 0, {
type: "value-word",
value: "...",
isColor: false,
isHex: false,
});
}
}
// We parse `@var[ foo ]` and `@var[foo]` differently
if (
original.type === "value-comma_group" &&
original.groups.some(
(node) =>
(node.type === "value-atword" && node.value.endsWith("[")) ||
(node.type === "value-word" && node.value.startsWith("]")),
)
) {
return {
type: "value-atword",
value: original.groups.map((node) => node.value).join(""),
group: {
open: null,
close: null,
groups: [],
type: "value-paren_group",
},
};
}
}
clean.ignoredProperties = ignoredProperties;
function cleanCSSStrings(value) {
return value.replaceAll("'", '"').replaceAll(/\\([^\da-f])/giu, "$1");
}
export default clean;