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