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Refactor declaration-block-no-duplicate-properties #6545

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merged 7 commits into from Dec 28, 2022
Merged

Refactor declaration-block-no-duplicate-properties #6545

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cd61645
a bit of refactoring here and there mainly to decrease nesting
fpetrakov Dec 23, 2022
a17bf24
stylistic fix return fn
fpetrakov Dec 24, 2022
3740f4b
put important in const
fpetrakov Dec 24, 2022
f14506f
put duplicate are consecutive in a const
fpetrakov Dec 24, 2022
c0608c1
move unprefixed values check in variable
fpetrakov Dec 24, 2022
2fd05f6
move fix and report to a separate function
fpetrakov Dec 26, 2022
af60e72
fix func decl
fpetrakov Dec 28, 2022
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142 changes: 48 additions & 94 deletions lib/rules/declaration-block-no-duplicate-properties/index.js
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Expand Up @@ -88,97 +88,58 @@ const rule = (primary, secondaryOptions, context) => {

const indexDuplicate = decls.findIndex((d) => d.prop.toLowerCase() === lowerProp);

if (indexDuplicate !== -1) {
const duplicateDecl = decls[indexDuplicate];
const duplicateValue = duplicateDecl ? duplicateDecl.value : '';
const duplicateImportant = duplicateDecl ? duplicateDecl.important : false;

if (ignoreDiffValues || ignorePrefixlessSameValues) {
// fails if duplicates are not consecutive
if (indexDuplicate !== decls.length - 1) {
if (context.fix) {
if (!important && duplicateImportant) {
decl.remove();
} else {
removePreviousDuplicate(decls, lowerProp);
}

return;
}

report({
message: messages.rejected(prop),
node: decl,
result,
ruleName,
word: prop,
});

return;
}

if (ignorePrefixlessSameValues) {
// fails if values of consecutive, unprefixed duplicates are equal
if (vendor.unprefixed(value) !== vendor.unprefixed(duplicateValue)) {
if (context.fix) {
if (!important && duplicateImportant) {
decl.remove();
} else {
removePreviousDuplicate(decls, lowerProp);
}

return;
}

report({
message: messages.rejected(prop),
node: decl,
result,
ruleName,
word: prop,
});

return;
}
}

// fails if values of consecutive duplicates are equal
if (value === duplicateValue) {
if (context.fix) {
removePreviousDuplicate(decls, lowerProp);

return;
}

report({
message: messages.rejected(prop),
node: decl,
result,
ruleName,
word: prop,
});

return;
}
if (indexDuplicate === -1) {
decls.push(decl);
}

return;
const duplicateDecl = decls[indexDuplicate];

if (!duplicateDecl) {
return;
}

const duplicateValue = duplicateDecl.value || '';
const duplicateImportant = duplicateDecl.important || false;
const duplicateIsMoreImportant = !important && duplicateImportant;
const duplicatesAreConsecutive = indexDuplicate === decls.length - 1;
const unprefixedDuplicatesAreEqual =
vendor.unprefixed(value) === vendor.unprefixed(duplicateValue);

const fixOrReport = () => {
if (!context.fix) {
return report({
message: messages.rejected(prop),
node: decl,
result,
ruleName,
word: prop,
});
}

if (ignoreDuplicates && indexDuplicate === decls.length - 1) {
return;
if (duplicateIsMoreImportant) {
return decl.remove();
}

if (context.fix) {
if (!important && duplicateImportant) {
decl.remove();
} else {
removePreviousDuplicate(decls, lowerProp);
}
return duplicateDecl.remove();
};

if (ignoreDiffValues || ignorePrefixlessSameValues) {
if (
!duplicatesAreConsecutive ||
(ignorePrefixlessSameValues && !unprefixedDuplicatesAreEqual)
) {
fixOrReport();
}

if (value !== duplicateValue) {
return;
}

report({
if (context.fix) {
return duplicateDecl.remove();
}

return report({
message: messages.rejected(prop),
node: decl,
result,
Expand All @@ -187,23 +148,16 @@ const rule = (primary, secondaryOptions, context) => {
});
}

decls.push(decl);
if (ignoreDuplicates && duplicatesAreConsecutive) {
return;
}

fixOrReport();
});
});
};
};

/**
* @param {import('postcss').Declaration[]} declarations
* @param {string} lowerProperty
* @returns {void}
* */
function removePreviousDuplicate(declarations, lowerProperty) {
const declToRemove = declarations.find((d) => d.prop.toLowerCase() === lowerProperty);

if (declToRemove) declToRemove.remove();
}

rule.ruleName = ruleName;
rule.messages = messages;
rule.meta = meta;
Expand Down