60 lines
1.9 KiB
JavaScript
60 lines
1.9 KiB
JavaScript
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/**
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* @fileoverview Rule to flag when regex literals are not wrapped in parens
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* @author Matt DuVall <http://www.mattduvall.com>
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Rule Definition
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//------------------------------------------------------------------------------
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module.exports = {
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meta: {
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type: "layout",
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docs: {
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description: "require parenthesis around regex literals",
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category: "Stylistic Issues",
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recommended: false,
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url: "https://eslint.org/docs/rules/wrap-regex"
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},
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schema: [],
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fixable: "code",
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messages: {
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requireParens: "Wrap the regexp literal in parens to disambiguate the slash."
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}
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},
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create(context) {
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const sourceCode = context.getSourceCode();
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return {
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Literal(node) {
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const token = sourceCode.getFirstToken(node),
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nodeType = token.type;
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if (nodeType === "RegularExpression") {
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const beforeToken = sourceCode.getTokenBefore(node);
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const afterToken = sourceCode.getTokenAfter(node);
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const ancestors = context.getAncestors();
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const grandparent = ancestors[ancestors.length - 1];
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if (grandparent.type === "MemberExpression" && grandparent.object === node &&
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!(beforeToken && beforeToken.value === "(" && afterToken && afterToken.value === ")")) {
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context.report({
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node,
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messageId: "requireParens",
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fix: fixer => fixer.replaceText(node, `(${sourceCode.getText(node)})`)
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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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};
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