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fix(core): fix new lines being added via elementFromString #4767

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merged 1 commit into from
Jan 10, 2024
Merged

fix(core): fix new lines being added via elementFromString #4767

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7 changes: 7 additions & 0 deletions demos/src/Issues/2720/React/index.spec.js
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Original file line number Diff line number Diff line change
Expand Up @@ -20,4 +20,11 @@ context('/src/Issues/2720/React/', () => {
// check if the content html is correct
cy.get('.tiptap').should('contain.html', 'Hello World\nThis is content with a new line. Is this working?\n\nLets see if multiple new lines are inserted correctly')
})

it('should keep newlines in pre tag', () => {
cy.get('.tiptap').then(([{ editor }]) => {
editor.commands.setContent('<pre><code>foo\nbar</code></pre>')
cy.get('.tiptap').should('contain.html', '<pre><code>foo\nbar</code></pre>')
})
})
})
1 change: 0 additions & 1 deletion packages/core/src/helpers/createNodeFromContent.ts
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Expand Up @@ -40,7 +40,6 @@ export function createNodeFromContent(
}

if (typeof content === 'string') {
content = content.split('\n').map(part => part.trim()).join('') // we need to remove new lines since the parser will add breaks
const parser = DOMParser.fromSchema(schema)

return options.slice
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22 changes: 21 additions & 1 deletion packages/core/src/utilities/elementFromString.ts
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Original file line number Diff line number Diff line change
@@ -1,6 +1,26 @@
const removeWhitespaces = (node: HTMLElement) => {
const children = node.childNodes

for (let i = children.length - 1; i >= 0; i -= 1) {
const child = children[i]

if (child.nodeType === 3 && child.nodeValue && !/\S/.test(child.nodeValue)) {
node.removeChild(child)
} else if (child.nodeType === 1) {
removeWhitespaces(child as HTMLElement)
}
}

return node
}

export function elementFromString(value: string): HTMLElement {
// add a wrapper to preserve leading and trailing whitespace
const wrappedValue = `<body>${value}</body>`

return new window.DOMParser().parseFromString(wrappedValue, 'text/html').body
const html = new window.DOMParser().parseFromString(wrappedValue, 'text/html').body

removeWhitespaces(html)

return removeWhitespaces(html)
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@yurtsiv yurtsiv Jan 11, 2024 •
edited

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Sorry, but does it have to be two calls of removeWhitespaces?

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Good catch - going to remove this for the next patch release.

}