| "use strict"; |
| var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) { |
| if (k2 === undefined) k2 = k; |
| Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } }); |
| }) : (function(o, m, k, k2) { |
| if (k2 === undefined) k2 = k; |
| o[k2] = m[k]; |
| })); |
| var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) { |
| Object.defineProperty(o, "default", { enumerable: true, value: v }); |
| }) : function(o, v) { |
| o["default"] = v; |
| }); |
| var __importStar = (this && this.__importStar) || function (mod) { |
| if (mod && mod.__esModule) return mod; |
| var result = {}; |
| if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k); |
| __setModuleDefault(result, mod); |
| return result; |
| }; |
| Object.defineProperty(exports, "__esModule", { value: true }); |
| const utils_1 = require("@typescript-eslint/utils"); |
| const semver = __importStar(require("semver")); |
| const ts = __importStar(require("typescript")); |
| const util = __importStar(require("../util")); |
| const is3dot5 = semver.satisfies(ts.version, `>= 3.5.0 || >= 3.5.1-rc || >= 3.5.0-beta`, { |
| includePrerelease: true, |
| }); |
| const is3dot9 = is3dot5 && |
| semver.satisfies(ts.version, `>= 3.9.0 || >= 3.9.1-rc || >= 3.9.0-beta`, { |
| includePrerelease: true, |
| }); |
| exports.default = util.createRule({ |
| name: 'no-unnecessary-type-constraint', |
| meta: { |
| docs: { |
| description: 'Disallows unnecessary constraints on generic types', |
| recommended: 'error', |
| suggestion: true, |
| }, |
| fixable: 'code', |
| messages: { |
| unnecessaryConstraint: 'Constraining the generic type `{{name}}` to `{{constraint}}` does nothing and is unnecessary.', |
| }, |
| schema: [], |
| type: 'suggestion', |
| }, |
| defaultOptions: [], |
| create(context) { |
| if (!is3dot5) { |
| return {}; |
| } |
| // In theory, we could use the type checker for more advanced constraint types... |
| // ...but in practice, these types are rare, and likely not worth requiring type info. |
| // https://github.com/typescript-eslint/typescript-eslint/pull/2516#discussion_r495731858 |
| const unnecessaryConstraints = is3dot9 |
| ? new Map([ |
| [utils_1.AST_NODE_TYPES.TSAnyKeyword, 'any'], |
| [utils_1.AST_NODE_TYPES.TSUnknownKeyword, 'unknown'], |
| ]) |
| : new Map([[utils_1.AST_NODE_TYPES.TSUnknownKeyword, 'unknown']]); |
| const inJsx = context.getFilename().toLowerCase().endsWith('tsx'); |
| const checkNode = (node, inArrowFunction) => { |
| const constraint = unnecessaryConstraints.get(node.constraint.type); |
| if (constraint) { |
| context.report({ |
| data: { |
| constraint, |
| name: node.name.name, |
| }, |
| fix(fixer) { |
| return fixer.replaceTextRange([node.name.range[1], node.constraint.range[1]], inArrowFunction && inJsx ? ',' : ''); |
| }, |
| messageId: 'unnecessaryConstraint', |
| node, |
| }); |
| } |
| }; |
| return { |
| ':not(ArrowFunctionExpression) > TSTypeParameterDeclaration > TSTypeParameter[constraint]'(node) { |
| checkNode(node, false); |
| }, |
| 'ArrowFunctionExpression > TSTypeParameterDeclaration > TSTypeParameter[constraint]'(node) { |
| checkNode(node, true); |
| }, |
| }; |
| }, |
| }); |
| //# sourceMappingURL=no-unnecessary-type-constraint.js.map |