d2-ui
Version:
47 lines (36 loc) • 1.31 kB
JavaScript
/**
* @fileoverview Rule to count multiple spaces in regular expressions
* @author Matt DuVall <http://www.mattduvall.com/>
*/
;
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = {
meta: {
docs: {
description: "disallow multiple spaces in regular expression literals",
category: "Possible Errors",
recommended: true
},
schema: []
},
create: function(context) {
var sourceCode = context.getSourceCode();
return {
Literal: function(node) {
var token = sourceCode.getFirstToken(node),
nodeType = token.type,
nodeValue = token.value,
multipleSpacesRegex = /( {2,})+?/,
regexResults;
if (nodeType === "RegularExpression") {
regexResults = multipleSpacesRegex.exec(nodeValue);
if (regexResults !== null) {
context.report(node, "Spaces are hard to count. Use {" + regexResults[0].length + "}.");
}
}
}
};
}
};