diff --git a/.changeset/swift-donkeys-perform.md b/.changeset/swift-donkeys-perform.md
new file mode 100644
index 0000000000..b911fa10a0
--- /dev/null
+++ b/.changeset/swift-donkeys-perform.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: tweak css nth regex
diff --git a/packages/svelte/src/compiler/phases/1-parse/read/style.js b/packages/svelte/src/compiler/phases/1-parse/read/style.js
index 9f59e8205e..8b1d785446 100644
--- a/packages/svelte/src/compiler/phases/1-parse/read/style.js
+++ b/packages/svelte/src/compiler/phases/1-parse/read/style.js
@@ -6,7 +6,7 @@ const REGEX_ATTRIBUTE_FLAGS = /^[a-zA-Z]+/; // only `i` and `s` are valid today,
const REGEX_COMBINATOR_WHITESPACE = /^\s*(\+|~|>|\|\|)\s*/;
const REGEX_COMBINATOR = /^(\+|~|>|\|\|)/;
const REGEX_PERCENTAGE = /^\d+(\.\d+)?%/;
-const REGEX_NTH_OF = /^(even|odd|(-?[0-9]?n?(\s*\+\s*[0-9]+)?))(\s+of\s+)?/;
+const REGEX_NTH_OF = /^\s*(even|odd|(-?[0-9]?n?(\s*\+\s*[0-9]+)?))(\s*(?=[,)])|\s+of\s+)/;
const REGEX_WHITESPACE_OR_COLON = /[\s:]/;
const REGEX_BRACE_OR_SEMICOLON = /[{;]/;
const REGEX_LEADING_HYPHEN_OR_DIGIT = /-?\d/;
@@ -294,7 +294,7 @@ function read_selector(parser, inside_pseudo_class = false) {
start,
end: parser.index
});
- } else if (parser.match_regex(REGEX_NTH_OF)) {
+ } else if (inside_pseudo_class && parser.match_regex(REGEX_NTH_OF)) {
children.push({
type: 'Nth',
value: /** @type {string} */ (parser.read(REGEX_NTH_OF)),
diff --git a/packages/svelte/tests/parser-modern/samples/css-nth-syntax/input.svelte b/packages/svelte/tests/parser-modern/samples/css-nth-syntax/input.svelte
index b8e2d40864..5668a7799a 100644
--- a/packages/svelte/tests/parser-modern/samples/css-nth-syntax/input.svelte
+++ b/packages/svelte/tests/parser-modern/samples/css-nth-syntax/input.svelte
@@ -21,6 +21,14 @@
h1:nth-child(odd) {
background: red;
}
+ h1:nth-child(
+ n
+ ) {
+ background: red;
+ }
+ h1:global(nav) {
+ background: red;
+ }
-Broken
+Foo
diff --git a/packages/svelte/tests/parser-modern/samples/css-nth-syntax/output.json b/packages/svelte/tests/parser-modern/samples/css-nth-syntax/output.json
index 1cea48b17c..3716981b37 100644
--- a/packages/svelte/tests/parser-modern/samples/css-nth-syntax/output.json
+++ b/packages/svelte/tests/parser-modern/samples/css-nth-syntax/output.json
@@ -2,7 +2,7 @@
"css": {
"type": "Style",
"start": 0,
- "end": 467,
+ "end": 586,
"attributes": [],
"children": [
{
@@ -471,32 +471,162 @@
},
"start": 408,
"end": 458
+ },
+ {
+ "type": "Rule",
+ "prelude": {
+ "type": "SelectorList",
+ "start": 463,
+ "end": 492,
+ "children": [
+ {
+ "type": "Selector",
+ "start": 463,
+ "end": 492,
+ "children": [
+ {
+ "type": "TypeSelector",
+ "name": "h1",
+ "start": 463,
+ "end": 465
+ },
+ {
+ "type": "PseudoClassSelector",
+ "name": "nth-child",
+ "args": {
+ "type": "SelectorList",
+ "start": 476,
+ "end": 491,
+ "children": [
+ {
+ "type": "Selector",
+ "start": 476,
+ "end": 491,
+ "children": [
+ {
+ "type": "Nth",
+ "value": "\n n\n ",
+ "start": 476,
+ "end": 491
+ }
+ ]
+ }
+ ]
+ },
+ "start": 465,
+ "end": 492
+ }
+ ]
+ }
+ ]
+ },
+ "block": {
+ "type": "Block",
+ "start": 493,
+ "end": 525,
+ "children": [
+ {
+ "type": "Declaration",
+ "start": 503,
+ "end": 518,
+ "property": "background",
+ "value": "red"
+ }
+ ]
+ },
+ "start": 463,
+ "end": 525
+ },
+ {
+ "type": "Rule",
+ "prelude": {
+ "type": "SelectorList",
+ "start": 530,
+ "end": 544,
+ "children": [
+ {
+ "type": "Selector",
+ "start": 530,
+ "end": 544,
+ "children": [
+ {
+ "type": "TypeSelector",
+ "name": "h1",
+ "start": 530,
+ "end": 532
+ },
+ {
+ "type": "PseudoClassSelector",
+ "name": "global",
+ "args": {
+ "type": "SelectorList",
+ "start": 540,
+ "end": 543,
+ "children": [
+ {
+ "type": "Selector",
+ "start": 540,
+ "end": 543,
+ "children": [
+ {
+ "type": "TypeSelector",
+ "name": "nav",
+ "start": 540,
+ "end": 543
+ }
+ ]
+ }
+ ]
+ },
+ "start": 532,
+ "end": 544
+ }
+ ]
+ }
+ ]
+ },
+ "block": {
+ "type": "Block",
+ "start": 545,
+ "end": 577,
+ "children": [
+ {
+ "type": "Declaration",
+ "start": 555,
+ "end": 570,
+ "property": "background",
+ "value": "red"
+ }
+ ]
+ },
+ "start": 530,
+ "end": 577
}
],
"content": {
"start": 7,
- "end": 459,
- "styles": "\n /* test that all these are parsed correctly */\n\th1:nth-of-type(2n+1){\n background: red;\n }\n h1:nth-child(-n + 3 of li.important) {\n background: red;\n }\n h1:nth-child(1) {\n background: red;\n }\n h1:nth-child(p) {\n background: red;\n }\n h1:nth-child(n+7) {\n background: red;\n }\n h1:nth-child(even) {\n background: red;\n }\n h1:nth-child(odd) {\n background: red;\n }\n"
+ "end": 578,
+ "styles": "\n /* test that all these are parsed correctly */\n\th1:nth-of-type(2n+1){\n background: red;\n }\n h1:nth-child(-n + 3 of li.important) {\n background: red;\n }\n h1:nth-child(1) {\n background: red;\n }\n h1:nth-child(p) {\n background: red;\n }\n h1:nth-child(n+7) {\n background: red;\n }\n h1:nth-child(even) {\n background: red;\n }\n h1:nth-child(odd) {\n background: red;\n }\n h1:nth-child(\n n\n ) {\n background: red;\n }\n h1:global(nav) {\n background: red;\n }\n"
}
},
"js": [],
- "start": 469,
- "end": 484,
+ "start": 588,
+ "end": 600,
"type": "Root",
"fragment": {
"type": "Fragment",
"nodes": [
{
"type": "Text",
- "start": 467,
- "end": 469,
+ "start": 586,
+ "end": 588,
"raw": "\n\n",
"data": "\n\n"
},
{
"type": "RegularElement",
- "start": 469,
- "end": 484,
+ "start": 588,
+ "end": 600,
"name": "h1",
"attributes": [],
"fragment": {
@@ -504,10 +634,10 @@
"nodes": [
{
"type": "Text",
- "start": 473,
- "end": 479,
- "raw": "Broken",
- "data": "Broken"
+ "start": 592,
+ "end": 595,
+ "raw": "Foo",
+ "data": "Foo"
}
],
"transparent": true