| "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 ts = __importStar(require("typescript")); |
| const util = __importStar(require("../util")); |
| const experimental_utils_1 = require("@typescript-eslint/experimental-utils"); |
| exports.default = util.createRule({ |
| name: 'no-throw-literal', |
| meta: { |
| type: 'problem', |
| docs: { |
| description: 'Disallow throwing literals as exceptions', |
| category: 'Best Practices', |
| recommended: false, |
| requiresTypeChecking: true, |
| }, |
| schema: [], |
| messages: { |
| object: 'Expected an error object to be thrown.', |
| undef: 'Do not throw undefined.', |
| }, |
| }, |
| defaultOptions: [], |
| create(context) { |
| const parserServices = util.getParserServices(context); |
| const program = parserServices.program; |
| const checker = program.getTypeChecker(); |
| function isErrorLike(type) { |
| var _a; |
| if (type.isIntersection()) { |
| return type.types.some(isErrorLike); |
| } |
| if (type.isUnion()) { |
| return type.types.every(isErrorLike); |
| } |
| const symbol = type.getSymbol(); |
| if (!symbol) { |
| return false; |
| } |
| if (symbol.getName() === 'Error') { |
| const declarations = (_a = symbol.getDeclarations()) !== null && _a !== void 0 ? _a : []; |
| for (const declaration of declarations) { |
| const sourceFile = declaration.getSourceFile(); |
| if (program.isSourceFileDefaultLibrary(sourceFile)) { |
| return true; |
| } |
| } |
| } |
| if (symbol.flags & (ts.SymbolFlags.Class | ts.SymbolFlags.Interface)) { |
| for (const baseType of checker.getBaseTypes(type)) { |
| if (isErrorLike(baseType)) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| function tryGetThrowArgumentType(node) { |
| switch (node.type) { |
| case experimental_utils_1.AST_NODE_TYPES.Identifier: |
| case experimental_utils_1.AST_NODE_TYPES.CallExpression: |
| case experimental_utils_1.AST_NODE_TYPES.NewExpression: |
| case experimental_utils_1.AST_NODE_TYPES.MemberExpression: |
| case experimental_utils_1.AST_NODE_TYPES.TSAsExpression: { |
| const tsNode = parserServices.esTreeNodeToTSNodeMap.get(node); |
| return checker.getTypeAtLocation(tsNode); |
| } |
| case experimental_utils_1.AST_NODE_TYPES.AssignmentExpression: |
| return tryGetThrowArgumentType(node.right); |
| case experimental_utils_1.AST_NODE_TYPES.SequenceExpression: |
| return tryGetThrowArgumentType(node.expressions[node.expressions.length - 1]); |
| case experimental_utils_1.AST_NODE_TYPES.LogicalExpression: { |
| const left = tryGetThrowArgumentType(node.left); |
| return left !== null && left !== void 0 ? left : tryGetThrowArgumentType(node.right); |
| } |
| case experimental_utils_1.AST_NODE_TYPES.ConditionalExpression: { |
| const consequent = tryGetThrowArgumentType(node.consequent); |
| return consequent !== null && consequent !== void 0 ? consequent : tryGetThrowArgumentType(node.alternate); |
| } |
| default: |
| return null; |
| } |
| } |
| function checkThrowArgument(node) { |
| if (node.type === experimental_utils_1.AST_NODE_TYPES.AwaitExpression || |
| node.type === experimental_utils_1.AST_NODE_TYPES.YieldExpression) { |
| return; |
| } |
| const type = tryGetThrowArgumentType(node); |
| if (type) { |
| if (type.flags & ts.TypeFlags.Undefined) { |
| context.report({ node, messageId: 'undef' }); |
| return; |
| } |
| if (util.isTypeAnyType(type) || |
| util.isTypeUnknownType(type) || |
| isErrorLike(type)) { |
| return; |
| } |
| } |
| context.report({ node, messageId: 'object' }); |
| } |
| return { |
| ThrowStatement(node) { |
| if (node.argument) { |
| checkThrowArgument(node.argument); |
| } |
| }, |
| }; |
| }, |
| }); |
| //# sourceMappingURL=no-throw-literal.js.map |