Website Structure

Frontend-Learner/node_modules/eslint-plugin-regexp/dist/rules/grapheme-string-literal.js

@@ -0,0 +1,53 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const utils_1 = require("../utils");
+const segmenter = new Intl.Segmenter();
+exports.default = (0, utils_1.createRule)("grapheme-string-literal", {
+    meta: {
+        docs: {
+            description: "enforce single grapheme in string literal",
+            category: "Stylistic Issues",
+            recommended: false,
+        },
+        schema: [],
+        messages: {
+            onlySingleCharacters: "Only single characters and graphemes are allowed inside character classes. Use regular alternatives (e.g. `{{alternatives}}`) for strings instead.",
+        },
+        type: "suggestion",
+    },
+    create(context) {
+        function createVisitor(regexpContext) {
+            const { node, getRegexpLocation } = regexpContext;
+            function isMultipleGraphemes(saNode) {
+                if (saNode.elements.length <= 1)
+                    return false;
+                const string = String.fromCodePoint(...saNode.elements.map((element) => element.value));
+                const segments = [...segmenter.segment(string)];
+                return segments.length > 1;
+            }
+            function buildAlternativeExample(saNode) {
+                const alternativeRaws = saNode.parent.alternatives
+                    .filter(isMultipleGraphemes)
+                    .map((alt) => alt.raw);
+                return `(?:${alternativeRaws.join("|")}|[...])`;
+            }
+            return {
+                onStringAlternativeEnter(saNode) {
+                    if (!isMultipleGraphemes(saNode))
+                        return;
+                    context.report({
+                        node,
+                        loc: getRegexpLocation(saNode),
+                        messageId: "onlySingleCharacters",
+                        data: {
+                            alternatives: buildAlternativeExample(saNode),
+                        },
+                    });
+                },
+            };
+        }
+        return (0, utils_1.defineRegexpVisitor)(context, {
+            createVisitor,
+        });
+    },
+});