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40 lines
1.2 KiB
40 lines
1.2 KiB
/**
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* @fileoverview Rule to disallow if as the only statmenet in an else block
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* @author Brandon Mills
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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 = {
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meta: {
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docs: {
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description: "disallow `if` statements as the only statement in `else` blocks",
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category: "Stylistic Issues",
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recommended: false
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},
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schema: []
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},
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create(context) {
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return {
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IfStatement(node) {
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const ancestors = context.getAncestors(),
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parent = ancestors.pop(),
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grandparent = ancestors.pop();
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if (parent && parent.type === "BlockStatement" &&
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parent.body.length === 1 && grandparent &&
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grandparent.type === "IfStatement" &&
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parent === grandparent.alternate) {
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context.report(node, "Unexpected if as the only statement in an else block.");
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}
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}
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};
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}
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};
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