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fix: improve no-html rule's tag location reporting #491

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Merged
nzakas merged 6 commits into from
Aug 22, 2025
Merged

fix: improve no-html rule's tag location reporting #491

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ebbb607
fix: improve no-html rule's tag location reporting
TKDev7 Jul 31, 2025
669dd45
use regex pattern instead of indexOf
TKDev7 Aug 5, 2025
5dea7a4
correctly handle > in HTML attribute values
TKDev7 Aug 6, 2025
c88961d
add test
TKDev7 Aug 9, 2025
843a4b3
simplify regex for detecting line endings
TKDev7 Aug 16, 2025
3c472a4
Merge branch 'main' into no-html-location-reporting
TKDev7 Aug 21, 2025
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17 changes: 14 additions & 3 deletions src/rules/no-html.js
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Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,9 @@ import { findOffsets } from "../util.js";
// Helpers
//-----------------------------------------------------------------------------

const htmlTagPattern = /<([a-z0-9]+(?:-[a-z0-9]+)*)/giu;
const htmlTagPattern =
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lumirlumir marked this conversation as resolved.
/<([a-z0-9]+(?:-[a-z0-9]+)*)(?:\s+(?:[^>"']|"[^"]*"|'[^']*')*)?>/giu;
const lineEndingPattern = /\r\n?|\n/u;

//-----------------------------------------------------------------------------
// Rule Definition
Expand Down Expand Up @@ -68,13 +70,14 @@ export default {
},

create(context) {
const allowed = new Set(context.options[0]?.allowed);
const allowed = new Set(context.options[0].allowed);

return {
html(node) {
let match;

while ((match = htmlTagPattern.exec(node.value)) !== null) {
const fullMatch = match[0];
const tagName = match[1];
const { lineOffset, columnOffset } = findOffsets(
node.value,
Expand All @@ -84,9 +87,17 @@ export default {
line: node.position.start.line + lineOffset,
column: node.position.start.column + columnOffset,
};

const firstNewlineIndex =
fullMatch.search(lineEndingPattern);
const endColumn =
firstNewlineIndex === -1
? start.column + fullMatch.length
: start.column + firstNewlineIndex;
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const end = {
line: start.line,
column: start.column + match[0].length + 1,
column: endColumn,
};

if (allowed.size === 0 || !allowed.has(tagName)) {
Expand Down
202 changes: 202 additions & 0 deletions tests/rules/no-html.test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -130,5 +130,207 @@ ruleTester.run("no-html", rule, {
},
],
},
{
code: "<span >Content</span>",
errors: [
{
messageId: "disallowedElement",
line: 1,
column: 1,
endLine: 1,
endColumn: 8,
data: { name: "span" },
},
],
},
{
code: '<div id="foo">Some content</div>',
errors: [
{
messageId: "disallowedElement",
line: 1,
column: 1,
endLine: 1,
endColumn: 15,
data: {
name: "div",
},
},
],
},
{
code: '<p class="text-center" data-attr="value">Content</p>',
errors: [
{
messageId: "disallowedElement",
line: 1,
column: 1,
endLine: 1,
endColumn: 42,
data: {
name: "p",
},
},
],
},
{
code: '<span\nclass="highlight"\ndata-id="123">Text</span>',
errors: [
{
messageId: "disallowedElement",
line: 1,
column: 1,
endLine: 1,
endColumn: 6,
data: {
name: "span",
},
},
],
},
{
code: '<span\rclass="highlight"\rdata-id="123">Text</span>',
errors: [
{
messageId: "disallowedElement",
line: 1,
column: 1,
endLine: 1,
endColumn: 6,
data: {
name: "span",
},
},
],
},
{
code: '<span\r\nclass="highlight"\r\ndata-id="123">Text</span>',
errors: [
{
messageId: "disallowedElement",
line: 1,
column: 1,
endLine: 1,
endColumn: 6,
data: {
name: "span",
},
},
],
},
{
code: '<div class="test" >Content</div>',
errors: [
{
messageId: "disallowedElement",
line: 1,
column: 1,
endLine: 1,
endColumn: 24,
data: { name: "div" },
},
],
},
{
code: '<input type="text" placeholder="Enter text" />',
errors: [
{
messageId: "disallowedElement",
line: 1,
column: 1,
endLine: 1,
endColumn: 47,
data: {
name: "input",
},
},
],
},
{
code: '<a href="#"><span class="highlight">Link</span></a>',
errors: [
{
messageId: "disallowedElement",
line: 1,
column: 1,
endLine: 1,
endColumn: 13,
data: { name: "a" },
},
{
messageId: "disallowedElement",
line: 1,
column: 13,
endLine: 1,
endColumn: 37,
data: { name: "span" },
},
],
},
{
code: '<input placeholder=">" />',
errors: [
{
messageId: "disallowedElement",
line: 1,
column: 1,
endLine: 1,
endColumn: 26,
data: {
name: "input",
},
},
],
},
{
code: "<input placeholder='>'></input>",
errors: [
{
messageId: "disallowedElement",
line: 1,
column: 1,
endLine: 1,
endColumn: 24,
data: {
name: "input",
},
},
],
},
{
code: '<input\nplaceholder=">" />',
errors: [
{
messageId: "disallowedElement",
line: 1,
column: 1,
endLine: 1,
endColumn: 7,
data: {
name: "input",
},
},
],
},
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{
code: dedent`
<!-- comment -->
<input
placeholder="Enter name"
name="First Name"
/>`,
errors: [
{
messageId: "disallowedElement",
line: 2,
column: 1,
endLine: 2,
endColumn: 7,
data: {
name: "input",
},
},
],
},
],
});
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