zhangjian
2023-06-05 0976d2d0f90cff460cedfdc8bd74e98c2c31a58c
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/**
 * @fileoverview Rule to check for ambiguous div operator in regexes
 * @author Matt DuVall <http://www.mattduvall.com>
 */
 
"use strict";
 
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
 
module.exports = {
    meta: {
        type: "suggestion",
 
        docs: {
            description: "disallow division operators explicitly at the beginning of regular expressions",
            category: "Best Practices",
            recommended: false,
            url: "https://eslint.org/docs/rules/no-div-regex"
        },
 
        fixable: "code",
 
        schema: [],
 
        messages: {
            unexpected: "A regular expression literal can be confused with '/='."
        }
    },
 
    create(context) {
        const sourceCode = context.getSourceCode();
 
        return {
 
            Literal(node) {
                const token = sourceCode.getFirstToken(node);
 
                if (token.type === "RegularExpression" && token.value[1] === "=") {
                    context.report({
                        node,
                        messageId: "unexpected",
                        fix(fixer) {
                            return fixer.replaceTextRange([token.range[0] + 1, token.range[0] + 2], "[=]");
                        }
                    });
                }
            }
        };
 
    }
};