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49 lines
1.5 KiB
49 lines
1.5 KiB
/**
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* @fileoverview Rule to flag use of an empty block statement
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* @author Nicholas C. Zakas
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* @copyright Nicholas C. Zakas. All rights reserved.
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* @copyright 2015 Dieter Oberkofler. All rights reserved.
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Rule Definition
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//------------------------------------------------------------------------------
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module.exports = function(context) {
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return {
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"BlockStatement": function(node) {
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var parent = node.parent,
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parentType = parent.type;
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// if the body is not empty, we can just return immediately
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if (node.body.length !== 0) {
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return;
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}
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// a function is generally allowed to be empty
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if (parentType === "FunctionDeclaration" || parentType === "FunctionExpression" || parentType === "ArrowFunctionExpression") {
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return;
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}
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// any other block is only allowed to be empty, if it contains a comment
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if (context.getComments(node).trailing.length > 0) {
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return;
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}
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context.report(node, "Empty block statement.");
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},
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"SwitchStatement": function(node) {
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if (typeof node.cases === "undefined" || node.cases.length === 0) {
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context.report(node, "Empty switch statement.");
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}
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}
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};
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};
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module.exports.schema = [];
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