52 lines
2.1 KiB
JavaScript
52 lines
2.1 KiB
JavaScript
"use strict";
|
|
var _definerule = require("../utils/define-rule");
|
|
var _nodeattributes = /*#__PURE__*/ _interop_require_default(require("../utils/node-attributes"));
|
|
function _interop_require_default(obj) {
|
|
return obj && obj.__esModule ? obj : {
|
|
default: obj
|
|
};
|
|
}
|
|
var url = 'https://nextjs.org/docs/messages/google-font-display';
|
|
module.exports = (0, _definerule.defineRule)({
|
|
meta: {
|
|
docs: {
|
|
description: 'Enforce font-display behavior with Google Fonts.',
|
|
recommended: true,
|
|
url: url
|
|
},
|
|
type: 'problem',
|
|
schema: []
|
|
},
|
|
create: function create(context) {
|
|
return {
|
|
JSXOpeningElement: function JSXOpeningElement(node) {
|
|
var message;
|
|
if (node.name.name !== 'link') {
|
|
return;
|
|
}
|
|
var attributes = new _nodeattributes.default(node);
|
|
if (!attributes.has('href') || !attributes.hasValue('href')) {
|
|
return;
|
|
}
|
|
var hrefValue = attributes.value('href');
|
|
var isGoogleFont = typeof hrefValue === 'string' && hrefValue.startsWith('https://fonts.googleapis.com/css');
|
|
if (isGoogleFont) {
|
|
var params = new URLSearchParams(hrefValue.split('?', 2)[1]);
|
|
var displayValue = params.get('display');
|
|
if (!params.has('display')) {
|
|
message = 'A font-display parameter is missing (adding `&display=optional` is recommended).';
|
|
} else if (displayValue === 'auto' || displayValue === 'block' || displayValue === 'fallback') {
|
|
message = "".concat(displayValue[0].toUpperCase() + displayValue.slice(1), " is not recommended.");
|
|
}
|
|
}
|
|
if (message) {
|
|
context.report({
|
|
node: node,
|
|
message: "".concat(message, " See: ").concat(url)
|
|
});
|
|
}
|
|
}
|
|
};
|
|
}
|
|
});
|