Sha256: e636727473a42a8e34ac53d7b56f801dcf66438c785066d44d5c7364066c74ce
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Size: 1.67 KB
Versions: 45
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Stored size: 1.67 KB
Contents
/**
* @fileoverview Rule to flag use of an lexical declarations inside a case clause
* @author Erik Arvidsson
*/
"use strict";
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = {
meta: {
docs: {
description: "disallow lexical declarations in case clauses",
category: "Best Practices",
recommended: true
},
schema: []
},
create: function(context) {
/**
* Checks whether or not a node is a lexical declaration.
* @param {ASTNode} node A direct child statement of a switch case.
* @returns {boolean} Whether or not the node is a lexical declaration.
*/
function isLexicalDeclaration(node) {
switch (node.type) {
case "FunctionDeclaration":
case "ClassDeclaration":
return true;
case "VariableDeclaration":
return node.kind !== "var";
default:
return false;
}
}
return {
SwitchCase: function(node) {
for (var i = 0; i < node.consequent.length; i++) {
var statement = node.consequent[i];
if (isLexicalDeclaration(statement)) {
context.report({
node: node,
message: "Unexpected lexical declaration in case block."
});
}
}
}
};
}
};
Version data entries
45 entries across 45 versions & 2 rubygems