43 lines
1.5 KiB
Plaintext
43 lines
1.5 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-dynamic-delete',
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meta: {
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type: 'suggestion',
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docs: {
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description: 'Disallow using the `delete` operator on computed key expressions',
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recommended: 'strict',
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},
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messages: {
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dynamicDelete: 'Do not delete dynamically computed property keys.',
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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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return {
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'UnaryExpression[operator=delete]'(node) {
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if (node.argument.type !== utils_1.AST_NODE_TYPES.MemberExpression ||
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!node.argument.computed ||
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isAcceptableIndexExpression(node.argument.property)) {
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return;
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}
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context.report({
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node: node.argument.property,
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messageId: 'dynamicDelete',
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});
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},
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};
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},
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});
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function isAcceptableIndexExpression(property) {
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return ((property.type === utils_1.AST_NODE_TYPES.Literal &&
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['number', 'string'].includes(typeof property.value)) ||
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(property.type === utils_1.AST_NODE_TYPES.UnaryExpression &&
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property.operator === '-' &&
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property.argument.type === utils_1.AST_NODE_TYPES.Literal &&
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typeof property.argument.value === 'number'));
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}
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