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printer-postcss.js
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import {
breakParent,
dedent,
group,
hardline,
ifBreak,
indent,
join,
line,
softline,
} from "../document/builders.js";
import { removeLines } from "../document/utils.js";
import isNonEmptyArray from "../utils/is-non-empty-array.js";
import printString from "../utils/print-string.js";
import UnexpectedNodeError from "../utils/unexpected-node-error.js";
import clean from "./clean.js";
import embed from "./embed.js";
import getVisitorKeys from "./get-visitor-keys.js";
import { locEnd, locStart } from "./loc.js";
import { insertPragma } from "./pragma.js";
import printCommaSeparatedValueGroup from "./print/comma-separated-value-group.js";
import {
adjustNumbers,
adjustStrings,
printCssNumber,
printUnit,
quoteAttributeValue,
} from "./print/misc.js";
import {
printParenthesizedValueGroup,
shouldBreakList,
} from "./print/parenthesized-value-group.js";
import printSequence from "./print/sequence.js";
import {
hasComposesNode,
hasParensAroundNode,
insideAtRuleNode,
insideICSSRuleNode,
insideValueFunctionNode,
isDetachedRulesetCallNode,
isDetachedRulesetDeclarationNode,
isKeyframeAtRuleKeywords,
isMediaAndSupportsKeywords,
isSCSSControlDirectiveNode,
isTemplatePlaceholderNode,
isTemplatePropNode,
isWideKeywords,
lastLineHasInlineComment,
maybeToLowerCase,
} from "./utils/index.js";
function genericPrint(path, options, print) {
const { node } = path;
switch (node.type) {
case "front-matter":
return [node.raw, hardline];
case "css-root": {
const nodes = printSequence(path, options, print);
let after = node.raws.after.trim();
if (after.startsWith(";")) {
after = after.slice(1).trim();
}
return [
node.frontMatter ? [print("frontMatter"), hardline] : "",
nodes,
after ? ` ${after}` : "",
node.nodes.length > 0 ? hardline : "",
];
}
case "css-comment": {
const isInlineComment = node.inline || node.raws.inline;
const text = options.originalText.slice(locStart(node), locEnd(node));
return isInlineComment ? text.trimEnd() : text;
}
case "css-rule":
return [
print("selector"),
node.important ? " !important" : "",
node.nodes
? [
node.selector?.type === "selector-unknown" &&
lastLineHasInlineComment(node.selector.value)
? line
: node.selector
? " "
: "",
"{",
node.nodes.length > 0
? indent([hardline, printSequence(path, options, print)])
: "",
hardline,
"}",
isDetachedRulesetDeclarationNode(node) ? ";" : "",
]
: ";",
];
case "css-decl": {
const parentNode = path.parent;
const { between: rawBetween } = node.raws;
const trimmedBetween = rawBetween.trim();
const isColon = trimmedBetween === ":";
const isValueAllSpace =
typeof node.value === "string" && /^ *$/u.test(node.value);
let value = typeof node.value === "string" ? node.value : print("value");
value = hasComposesNode(node) ? removeLines(value) : value;
if (
!isColon &&
lastLineHasInlineComment(trimmedBetween) &&
!(
node.value?.group?.group &&
path.call(() => shouldBreakList(path), "value", "group", "group")
)
) {
value = indent([hardline, dedent(value)]);
}
return [
node.raws.before.replaceAll(/[\s;]/gu, ""),
// Less variable
(parentNode.type === "css-atrule" && parentNode.variable) ||
insideICSSRuleNode(path)
? node.prop
: maybeToLowerCase(node.prop),
trimmedBetween.startsWith("//") ? " " : "",
trimmedBetween,
node.extend || isValueAllSpace ? "" : " ",
options.parser === "less" && node.extend && node.selector
? ["extend(", print("selector"), ")"]
: "",
value,
node.raws.important
? node.raws.important.replace(/\s*!\s*important/iu, " !important")
: node.important
? " !important"
: "",
node.raws.scssDefault
? node.raws.scssDefault.replace(/\s*!default/iu, " !default")
: node.scssDefault
? " !default"
: "",
node.raws.scssGlobal
? node.raws.scssGlobal.replace(/\s*!global/iu, " !global")
: node.scssGlobal
? " !global"
: "",
node.nodes
? [
" {",
indent([softline, printSequence(path, options, print)]),
softline,
"}",
]
: isTemplatePropNode(node) &&
!parentNode.raws.semicolon &&
options.originalText[locEnd(node) - 1] !== ";"
? ""
: options.__isHTMLStyleAttribute && path.isLast
? ifBreak(";")
: ";",
];
}
case "css-atrule": {
const parentNode = path.parent;
const isTemplatePlaceholderNodeWithoutSemiColon =
isTemplatePlaceholderNode(node) &&
!parentNode.raws.semicolon &&
options.originalText[locEnd(node) - 1] !== ";";
if (options.parser === "less") {
if (node.mixin) {
return [
print("selector"),
node.important ? " !important" : "",
isTemplatePlaceholderNodeWithoutSemiColon ? "" : ";",
];
}
if (node.function) {
return [
node.name,
typeof node.params === "string" ? node.params : print("params"),
isTemplatePlaceholderNodeWithoutSemiColon ? "" : ";",
];
}
if (node.variable) {
return [
"@",
node.name,
": ",
node.value ? print("value") : "",
node.raws.between.trim() ? node.raws.between.trim() + " " : "",
node.nodes
? [
"{",
indent([
node.nodes.length > 0 ? softline : "",
printSequence(path, options, print),
]),
softline,
"}",
]
: "",
isTemplatePlaceholderNodeWithoutSemiColon ? "" : ";",
];
}
}
const isImportUnknownValueEndsWithSemiColon =
node.name === "import" &&
node.params?.type === "value-unknown" &&
node.params.value.endsWith(";");
return [
"@",
// If a Less file ends up being parsed with the SCSS parser, Less
// variable declarations will be parsed as at-rules with names ending
// with a colon, so keep the original case then.
isDetachedRulesetCallNode(node) ||
node.name.endsWith(":") ||
isTemplatePlaceholderNode(node)
? node.name
: maybeToLowerCase(node.name),
node.params
? [
isDetachedRulesetCallNode(node)
? ""
: isTemplatePlaceholderNode(node)
? node.raws.afterName === ""
? ""
: node.name.endsWith(":")
? " "
: /^\s*\n\s*\n/u.test(node.raws.afterName)
? [hardline, hardline]
: /^\s*\n/u.test(node.raws.afterName)
? hardline
: " "
: " ",
typeof node.params === "string" ? node.params : print("params"),
]
: "",
node.selector ? indent([" ", print("selector")]) : "",
node.value
? group([
" ",
print("value"),
isSCSSControlDirectiveNode(node, options)
? hasParensAroundNode(node)
? " "
: line
: "",
])
: node.name === "else"
? " "
: "",
node.nodes
? [
isSCSSControlDirectiveNode(node, options)
? ""
: (node.selector &&
!node.selector.nodes &&
typeof node.selector.value === "string" &&
lastLineHasInlineComment(node.selector.value)) ||
(!node.selector &&
typeof node.params === "string" &&
lastLineHasInlineComment(node.params))
? line
: " ",
"{",
indent([
node.nodes.length > 0 ? softline : "",
printSequence(path, options, print),
]),
softline,
"}",
]
: isTemplatePlaceholderNodeWithoutSemiColon ||
isImportUnknownValueEndsWithSemiColon
? ""
: ";",
];
}
// postcss-media-query-parser
case "media-query-list": {
const parts = [];
path.each(({ node }) => {
if (node.type === "media-query" && node.value === "") {
return;
}
parts.push(print());
}, "nodes");
return group(indent(join(line, parts)));
}
case "media-query":
return [join(" ", path.map(print, "nodes")), path.isLast ? "" : ","];
case "media-type":
return adjustNumbers(adjustStrings(node.value, options));
case "media-feature-expression":
if (!node.nodes) {
return node.value;
}
return ["(", ...path.map(print, "nodes"), ")"];
case "media-feature":
return maybeToLowerCase(
adjustStrings(node.value.replaceAll(/ +/gu, " "), options),
);
case "media-colon":
return [node.value, " "];
case "media-value":
return adjustNumbers(adjustStrings(node.value, options));
case "media-keyword":
return adjustStrings(node.value, options);
case "media-url":
return adjustStrings(
node.value
.replaceAll(/^url\(\s+/giu, "url(")
.replaceAll(/\s+\)$/gu, ")"),
options,
);
case "media-unknown":
return node.value;
// postcss-selector-parser
case "selector-root":
return group([
insideAtRuleNode(path, "custom-selector")
? [
path.findAncestor((node) => node.type === "css-atrule")
.customSelector,
line,
]
: "",
join(
[
",",
insideAtRuleNode(path, ["extend", "custom-selector", "nest"])
? line
: hardline,
],
path.map(print, "nodes"),
),
]);
case "selector-selector":
return group(indent(path.map(print, "nodes")));
case "selector-comment":
return node.value;
case "selector-string":
return adjustStrings(node.value, options);
case "selector-tag":
return [
node.namespace
? [node.namespace === true ? "" : node.namespace.trim(), "|"]
: "",
path.previous?.type === "selector-nesting"
? node.value
: adjustNumbers(
isKeyframeAtRuleKeywords(path, node.value)
? node.value.toLowerCase()
: node.value,
),
];
case "selector-id":
return ["#", node.value];
case "selector-class":
return [".", adjustNumbers(adjustStrings(node.value, options))];
case "selector-attribute":
return [
"[",
node.namespace
? [node.namespace === true ? "" : node.namespace.trim(), "|"]
: "",
node.attribute.trim(),
node.operator ?? "",
node.value
? quoteAttributeValue(
adjustStrings(node.value.trim(), options),
options,
)
: "",
node.insensitive ? " i" : "",
"]",
];
case "selector-combinator": {
if (
node.value === "+" ||
node.value === ">" ||
node.value === "~" ||
node.value === ">>>"
) {
const parentNode = path.parent;
const leading =
parentNode.type === "selector-selector" &&
parentNode.nodes[0] === node
? ""
: line;
return [leading, node.value, path.isLast ? "" : " "];
}
const leading = node.value.trim().startsWith("(") ? line : "";
const value =
adjustNumbers(adjustStrings(node.value.trim(), options)) || line;
return [leading, value];
}
case "selector-universal":
return [
node.namespace
? [node.namespace === true ? "" : node.namespace.trim(), "|"]
: "",
node.value,
];
case "selector-pseudo":
return [
maybeToLowerCase(node.value),
isNonEmptyArray(node.nodes)
? group([
"(",
indent([softline, join([",", line], path.map(print, "nodes"))]),
softline,
")",
])
: "",
];
case "selector-nesting":
return node.value;
case "selector-unknown": {
const ruleAncestorNode = path.findAncestor(
(node) => node.type === "css-rule",
);
// Nested SCSS property
if (ruleAncestorNode?.isSCSSNesterProperty) {
return adjustNumbers(
adjustStrings(maybeToLowerCase(node.value), options),
);
}
// originalText has to be used for Less, see replaceQuotesInInlineComments in loc.js
const parentNode = path.parent;
if (parentNode.raws?.selector) {
const start = locStart(parentNode);
const end = start + parentNode.raws.selector.length;
return options.originalText.slice(start, end).trim();
}
// Same reason above
const grandParent = path.grandparent;
if (
parentNode.type === "value-paren_group" &&
grandParent?.type === "value-func" &&
grandParent.value === "selector"
) {
const start = locEnd(parentNode.open) + 1;
const end = locStart(parentNode.close);
const selector = options.originalText.slice(start, end).trim();
return lastLineHasInlineComment(selector)
? [breakParent, selector]
: selector;
}
return node.value;
}
// postcss-values-parser
case "value-value":
case "value-root":
return print("group");
case "value-comment":
return options.originalText.slice(locStart(node), locEnd(node));
case "value-comma_group":
return printCommaSeparatedValueGroup(path, options, print);
case "value-paren_group":
return printParenthesizedValueGroup(path, options, print);
case "value-func":
return [
node.value,
insideAtRuleNode(path, "supports") && isMediaAndSupportsKeywords(node)
? " "
: "",
print("group"),
];
case "value-paren":
return node.value;
case "value-number":
return [printCssNumber(node.value), printUnit(node.unit)];
case "value-operator":
return node.value;
case "value-word":
if ((node.isColor && node.isHex) || isWideKeywords(node.value)) {
return node.value.toLowerCase();
}
return node.value;
case "value-colon": {
const { previous } = path;
return [
node.value,
// Don't add spaces on escaped colon `:`, e.g: grid-template-rows: [row-1-00\:00] auto;
(typeof previous?.value === "string" &&
previous.value.endsWith("\\")) ||
// Don't add spaces on `:` in `url` function (i.e. `url(fbglyph: cross-outline, fig-white)`)
insideValueFunctionNode(path, "url")
? ""
: line,
];
}
case "value-string":
return printString(
node.raws.quote + node.value + node.raws.quote,
options,
);
case "value-atword":
return ["@", node.value];
case "value-unicode-range":
return node.value;
case "value-unknown":
return node.value;
case "value-comma": // Handled in `value-comma_group`
default:
/* c8 ignore next */
throw new UnexpectedNodeError(node, "PostCSS");
}
}
const printer = {
print: genericPrint,
embed,
insertPragma,
massageAstNode: clean,
getVisitorKeys,
};
export default printer;