74 lines
3.1 KiB
Plaintext
74 lines
3.1 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 (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 in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
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__setModuleDefault(result, mod);
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return result;
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.getTypeName = void 0;
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const ts = __importStar(require("typescript"));
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/**
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* Get the type name of a given type.
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* @param typeChecker The context sensitive TypeScript TypeChecker.
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* @param type The type to get the name of.
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*/
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function getTypeName(typeChecker, type) {
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// It handles `string` and string literal types as string.
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if ((type.flags & ts.TypeFlags.StringLike) !== 0) {
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return 'string';
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}
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// If the type is a type parameter which extends primitive string types,
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// but it was not recognized as a string like. So check the constraint
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// type of the type parameter.
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if ((type.flags & ts.TypeFlags.TypeParameter) !== 0) {
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// `type.getConstraint()` method doesn't return the constraint type of
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// the type parameter for some reason. So this gets the constraint type
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// via AST.
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const symbol = type.getSymbol();
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const decls = symbol?.getDeclarations();
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const typeParamDecl = decls?.[0];
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if (ts.isTypeParameterDeclaration(typeParamDecl) &&
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typeParamDecl.constraint != null) {
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return getTypeName(typeChecker, typeChecker.getTypeFromTypeNode(typeParamDecl.constraint));
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}
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}
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// If the type is a union and all types in the union are string like,
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// return `string`. For example:
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// - `"a" | "b"` is string.
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// - `string | string[]` is not string.
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if (type.isUnion() &&
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type.types
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.map(value => getTypeName(typeChecker, value))
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.every(t => t === 'string')) {
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return 'string';
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}
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// If the type is an intersection and a type in the intersection is string
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// like, return `string`. For example: `string & {__htmlEscaped: void}`
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if (type.isIntersection() &&
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type.types
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.map(value => getTypeName(typeChecker, value))
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.some(t => t === 'string')) {
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return 'string';
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}
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return typeChecker.typeToString(type);
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}
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exports.getTypeName = getTypeName;
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//# sourceMappingURL=getTypeName.js.map |