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This is required because we need to add the babel-eslint dependency and it has to be able to resolve "eslint". babel-eslint is required to support future ES features such as async iterators and import.meta. Refs: https://github.com/nodejs/node/pull/17755 PR-URL: https://github.com/nodejs/node/pull/17820 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
44 lines
1.1 KiB
JavaScript
44 lines
1.1 KiB
JavaScript
/**
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* @fileoverview Rule to disallow a duplicate case label.
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* @author Dieter Oberkofler
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* @author Burak Yigit Kaya
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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 duplicate case labels",
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category: "Possible Errors",
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recommended: true
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},
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schema: []
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},
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create(context) {
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const sourceCode = context.getSourceCode();
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return {
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SwitchStatement(node) {
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const mapping = {};
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node.cases.forEach(switchCase => {
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const key = sourceCode.getText(switchCase.test);
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if (mapping[key]) {
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context.report({ node: switchCase, message: "Duplicate case label." });
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} else {
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mapping[key] = switchCase;
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}
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});
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}
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};
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}
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};
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