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feat: ability to specify if selfClosing element is a void element #670

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feat: ability to specify if selfClosing element is a void element #670

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c54eeb1
feat: ability to specify if selfClosing tag is a void element
gastonyte Jul 21, 2024
d705545
chore: ignore .vscode folder
gastonyte Jul 29, 2024
96d3b63
chore: add a lockfile
gastonyte Jul 29, 2024
85f6340
refactor: rename `voidTag` to `voidElement`
gastonyte Jul 29, 2024
344c408
chore: add tests for selfClosing option (including voidElement property)
gastonyte Jul 29, 2024
c884bd4
makes the changes requested
gastonyte Sep 24, 2024
9b0e176
Merge remote-tracking branch 'upstream/main'
gastonyte Sep 24, 2024
e8a6bab
improve readability with a for-of
gastonyte Sep 24, 2024
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1 change: 1 addition & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -5,3 +5,4 @@ node_modules
.idea
# We do not commit CSS, only LESS
public/css/*.css
.vscode
20 changes: 16 additions & 4 deletions index.js
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Expand Up @@ -117,7 +117,15 @@ function sanitizeHtml(html, options, _recursing) {
options = Object.assign({}, sanitizeHtml.defaults, options);
options.parser = Object.assign({}, htmlParserDefaults, options.parser);

const tagAllowed = function (name) {
const { selfClosing } = options;
if (Array.isArray(selfClosing)) {
options.selfClosing = selfClosing.reduce((before, tagName) => ({
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It would be more performant to use a for loop here, avoiding the need to make a new object on every pass.

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i replaced the reduce with a for-of loop

...before,
[tagName]: true
}), {});
}

const tagAllowed = function(name) {
return options.allowedTags === false || (options.allowedTags || []).indexOf(name) > -1;
};

Expand Down Expand Up @@ -484,15 +492,19 @@ function sanitizeHtml(html, options, _recursing) {
}
});
}
if (options.selfClosing.indexOf(name) !== -1) {
result += ' />';

if (options.selfClosing[name]) {
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Use Object.hasOwn(options.selfClosing, name) to make sure it's a real property and not something sneaky like __prototype__. Or use a Map.

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done

result += options.selfClosing[name]?.voidElement === true
? '>'
: ' />';
} else {
result += '>';
if (frame.innerText && !hasText && !options.textFilter) {
result += escapeHtml(frame.innerText);
addedText = true;
}
}

if (skip) {
result = tempResult + escapeHtml(result);
tempResult = '';
Expand Down Expand Up @@ -584,7 +596,7 @@ function sanitizeHtml(html, options, _recursing) {

if (
// Already output />
options.selfClosing.indexOf(name) !== -1 ||
options.selfClosing[name] ||
// Escaped tag, closing tag is implied
(isImplied && !tagAllowed(name) && [ 'escape', 'recursiveEscape' ].indexOf(options.disallowedTagsMode) >= 0)
) {
Expand Down
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