使用 TypeScript API 查找类型引用 [英] Find kind of TypeReference using TypeScript API

问题描述

我正在尝试查找 TypeReference 的种类(类、接口、类型别名、枚举...).

I'm trying to find the kind (class, interface, type alias, enumeration ...) of a TypeReference.

我有这个:

const anode = node as ts.TypeReferenceNode;
const symbol = this.typechecker.getSymbolAtLocation(anode.typeName) as ts.Symbol;
const type = this.typechecker.getTypeOfSymbolAtLocation(symbol, anode);
const decls = symbol.getDeclarations() as ts.Declaration[]; 

但是对 getSymbolAtLocation 的调用返回 undefined.

But the call to getSymbolAtLocation returns undefined.

anode 是 TypeReferenceNode(种类 159):

anode is a TypeReferenceNode (kind 159) according to VSC debugger:

和转义文本 ETypes 对枚举引用的引用.

And escapedText ETypes references to an enum reference.

推荐答案

我找到了一个解决方案:

I found out a solution:

const anode = node as ts.TypeReferenceNode;
const type = this.typechecker.getTypeAtLocation(anode);
const symbol = type.symbol || type.aliasSymbol;
const decls = symbol.getDeclarations() as ts.Declaration[];

从 decls 数组中，您可以找出声明是否为接口、类等...

From the decls array you can find out whether the declarations are Interfaces, Classes, etc...

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