41 lines
1.2 KiB
JavaScript
41 lines
1.2 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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const utils_1 = require("../utils");
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exports.default = (0, utils_1.createRule)("no-empty-group", {
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meta: {
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docs: {
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description: "disallow empty group",
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category: "Possible Errors",
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recommended: true,
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},
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schema: [],
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messages: {
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unexpected: "Unexpected empty group.",
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},
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type: "suggestion",
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},
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create(context) {
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function verifyGroup({ node, getRegexpLocation }, gNode) {
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if (gNode.alternatives.every((alt) => alt.elements.length === 0)) {
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context.report({
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node,
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loc: getRegexpLocation(gNode),
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messageId: "unexpected",
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});
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}
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}
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function createVisitor(regexpContext) {
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return {
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onGroupEnter(gNode) {
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verifyGroup(regexpContext, gNode);
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},
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onCapturingGroupEnter(cgNode) {
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verifyGroup(regexpContext, cgNode);
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},
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};
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}
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return (0, utils_1.defineRegexpVisitor)(context, {
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createVisitor,
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});
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},
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});
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