71 lines
2.6 KiB
Plaintext
71 lines
2.6 KiB
Plaintext
"use strict";
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var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
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if (k2 === undefined) k2 = k;
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var desc = Object.getOwnPropertyDescriptor(m, k);
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if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
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desc = { enumerable: true, get: function() { return m[k]; } };
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}
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Object.defineProperty(o, k2, desc);
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}) : (function(o, m, k, k2) {
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if (k2 === undefined) k2 = k;
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o[k2] = m[k];
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}));
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var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
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Object.defineProperty(o, "default", { enumerable: true, value: v });
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}) : function(o, v) {
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o["default"] = v;
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});
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var __importStar = (this && this.__importStar) || (function () {
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var ownKeys = function(o) {
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ownKeys = Object.getOwnPropertyNames || function (o) {
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var ar = [];
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for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
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return ar;
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};
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return ownKeys(o);
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};
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return function (mod) {
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if (mod && mod.__esModule) return mod;
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var result = {};
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if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
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__setModuleDefault(result, mod);
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return result;
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};
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})();
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.getConstraintInfo = getConstraintInfo;
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const tsutils = __importStar(require("ts-api-utils"));
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/**
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* Returns whether the type is a generic and what its constraint is.
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*
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* If the type is not a generic, `isTypeParameter` will be `false`, and
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* `constraintType` will be the same as the input type.
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*
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* If the type is a generic, and it is constrained, `isTypeParameter` will be
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* `true`, and `constraintType` will be the constraint type.
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*
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* If the type is a generic, but it is not constrained, `constraintType` will be
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* `undefined` (rather than an `unknown` type), due to https://github.com/microsoft/TypeScript/issues/60475
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*
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* Successor to {@link getConstrainedTypeAtLocation} due to https://github.com/typescript-eslint/typescript-eslint/issues/10438
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*
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* This is considered internal since it is unstable for now and may have breaking changes at any time.
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* Use at your own risk.
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*
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* @internal
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*
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*/
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function getConstraintInfo(checker, type) {
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if (tsutils.isTypeParameter(type)) {
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const constraintType = checker.getBaseConstraintOfType(type);
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return {
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constraintType,
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isTypeParameter: true,
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};
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}
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return {
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constraintType: type,
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isTypeParameter: false,
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};
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}
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