62 lines
2.2 KiB
Plaintext
62 lines
2.2 KiB
Plaintext
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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const utils_1 = require("@typescript-eslint/utils");
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const util_1 = require("../util");
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exports.default = (0, util_1.createRule)({
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name: 'no-duplicate-enum-values',
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meta: {
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type: 'problem',
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docs: {
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description: 'Disallow duplicate enum member values',
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recommended: 'recommended',
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},
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hasSuggestions: false,
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messages: {
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duplicateValue: 'Duplicate enum member value {{value}}.',
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},
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schema: [],
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},
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defaultOptions: [],
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create(context) {
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function isStringLiteral(node) {
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return (node.type === utils_1.AST_NODE_TYPES.Literal && typeof node.value === 'string');
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}
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function isNumberLiteral(node) {
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return (node.type === utils_1.AST_NODE_TYPES.Literal && typeof node.value === 'number');
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}
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return {
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TSEnumDeclaration(node) {
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const enumMembers = node.members;
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const seenValues = new Set();
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enumMembers.forEach(member => {
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if (member.initializer === undefined) {
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return;
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}
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let value;
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if (isStringLiteral(member.initializer)) {
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value = String(member.initializer.value);
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}
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else if (isNumberLiteral(member.initializer)) {
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value = Number(member.initializer.value);
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}
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if (value === undefined) {
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return;
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}
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if (seenValues.has(value)) {
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context.report({
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node: member,
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messageId: 'duplicateValue',
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data: {
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value,
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},
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});
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}
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else {
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seenValues.add(value);
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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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//# sourceMappingURL=no-duplicate-enum-values.js.map |