node/tools/eslint-rules/timer-arguments.js
Rich Trott dec5900c42 tools: add lint rule to enforce timer arguments
Add a custom ESLint rule to require that setTimeout() and setInterval()
get called with at least two arguments. This prevents omitting the
duration or interval.

PR-URL: https://github.com/nodejs/node/pull/9472
Reviewed-By: Teddy Katz <teddy.katz@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
2017-01-27 08:11:51 -05:00

25 lines
679 B
JavaScript

/**
* @fileoverview Require at least two arguments when calling setTimeout() or
* setInterval().
* @author Rich Trott
*/
'use strict';
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
function isTimer(name) {
return ['setTimeout', 'setInterval'].includes(name);
}
module.exports = function(context) {
return {
'CallExpression': function(node) {
const name = node.callee.name;
if (isTimer(name) && node.arguments.length < 2) {
context.report(node, `${name} must have at least 2 arguments`);
}
}
};
};