2021-05-07 10:49:37 +02:00
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module.exports = {
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meta: {
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docs: {
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description: 'Disallow using <title> with Head from next/document',
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2021-10-16 08:16:41 +02:00
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url: 'https://nextjs.org/docs/messages/no-title-in-document-head',
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2021-05-07 10:49:37 +02:00
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},
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},
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create: function (context) {
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let headFromNextDocument = false
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return {
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ImportDeclaration(node) {
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if (node.source.value === 'next/document') {
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if (node.specifiers.some(({ local }) => local.name === 'Head')) {
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headFromNextDocument = true
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}
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}
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},
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JSXElement(node) {
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if (!headFromNextDocument) {
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return
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}
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if (
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node.openingElement &&
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node.openingElement.name &&
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node.openingElement.name.name !== 'Head'
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) {
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return
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}
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const titleTag = node.children.find(
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(child) =>
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child.openingElement &&
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child.openingElement.name &&
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child.openingElement.name.type === 'JSXIdentifier' &&
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child.openingElement.name.name === 'title'
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)
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if (titleTag) {
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context.report({
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node: titleTag,
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message:
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fix(eslint-plugin-next): Broken links in eslint output (#32837)
This fixes broken links in the eslint output by removing the trailing full stop.
It also makes the formatting of (the output of) the various rules consistent.
## Documentation / Examples
- [x] Make sure the linting passes by running `yarn lint`
> I don't think this is a bug, nor a feature, nor is it really documentation.
> It's just a small nuisance that I bumped into and felt compelled to fix.
> I went with documentation as that seems the closest match
## What does this pull request do?
The elslint output of `eslint-plugin-next` contains useful links to the documentation about the various rules.
Unfortunately, on most (but not all) rules, those links are immediately followed by a full stop (`.`).
The terminal (or any parser) has no way of knowing that the full stop is not part of the URL.
So it includes it and clicking the link leads to a 404 on the nextjs.org website.
![eslint](https://user-images.githubusercontent.com/1708494/147452577-43ad4ce7-df75-4d48-ab78-70b9b8212b7e.png)
This PR fixes that by removing the full stop.
## But a final full stop is better grammar
I considered alternatives (such as [a zero-width space character](https://en.wikipedia.org/wiki/Zero-width_space#Prohibited_in_URLs)) in case the final full stop was part of the style guide or something.
However, as I went through the eslint rules, I notices that the messages for various rules were formatted inconsistently.
Some with final full stop, some without.
As such, I made the all consistent with this structure:
> [message]. See: [url]
I feel this is a better solution than using the zero-width space as these sort of invisible characters
in code can be a red flag that something fishy is going on.
I submit this pull request in the hope it will be useful, and a positive contribution to a project I have a great deal of appreciation for.
That being said, I fully understand if people would consider this a non-issue.
2021-12-28 03:18:39 +01:00
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'Titles should be defined at the page-level using next/head. See: https://nextjs.org/docs/messages/no-title-in-document-head',
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2021-05-07 10:49:37 +02:00
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})
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}
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},
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}
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},
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}
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