59 lines
1.8 KiB
JavaScript
59 lines
1.8 KiB
JavaScript
/**
|
|
* @fileoverview Rule to flag when using constructor without parentheses
|
|
* @author Ilya Volodin
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Requirements
|
|
//------------------------------------------------------------------------------
|
|
|
|
const astUtils = require("../ast-utils");
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Helpers
|
|
//------------------------------------------------------------------------------
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Rule Definition
|
|
//------------------------------------------------------------------------------
|
|
|
|
module.exports = {
|
|
meta: {
|
|
docs: {
|
|
description: "require parentheses when invoking a constructor with no arguments",
|
|
category: "Stylistic Issues",
|
|
recommended: false
|
|
},
|
|
|
|
schema: [],
|
|
|
|
fixable: "code"
|
|
},
|
|
|
|
create(context) {
|
|
const sourceCode = context.getSourceCode();
|
|
|
|
return {
|
|
NewExpression(node) {
|
|
if (node.arguments.length !== 0) {
|
|
return; // shortcut: if there are arguments, there have to be parens
|
|
}
|
|
|
|
const lastToken = sourceCode.getLastToken(node);
|
|
const hasLastParen = lastToken && astUtils.isClosingParenToken(lastToken);
|
|
const hasParens = hasLastParen && astUtils.isOpeningParenToken(sourceCode.getTokenBefore(lastToken));
|
|
|
|
if (!hasParens) {
|
|
context.report({
|
|
node,
|
|
message: "Missing '()' invoking a constructor.",
|
|
fix: fixer => fixer.insertTextAfter(node, "()")
|
|
});
|
|
}
|
|
}
|
|
};
|
|
}
|
|
};
|