CODEWITHSUNDEEP
typescriptdecoratornode-modulesinversifyjs
Yananas
Yananas

Reputation: 125

Reflect.Decorate is not a function

A program I am getting to know the codebase of uses a DecorateAndBind function. While running tests, I got the error message TypeError: Reflect.decorate is not a function. Since this didn't seem to come from anything the team here has written themselves, I investigated.

At some point the program calls upon a decorate function in the Inversify module. To be precise it's in node_modules/inversify/dts/annotation/decorator_utils.d.ts. In the corresponding .js file this refers to Reflect.decorate. I can trace the definition of Reflect to a different module, node_modules/typescript/lib/lib.es2015.reflect.d.ts. In this file, Reflect.decorate is not declared.

What can I do to fix this error? I think I shouldn't edit node_modules files myself. Is the initial call to the decorate function in Inversify wrong?

Upvotes: 1

Views: 2848

Answers (1)

user3555201
user3555201

Reputation: 59

You mentioned installing reflect-metadata, but did you also import it? import "reflect-metadata";

Upvotes: 2

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