I'm curious, where exactly are the TypeScript declaration files installed when running "npm install --save @types/jasmine"?

After running the command

npm install --save @types/jasmine
, my describe, it, and expect calls all compile successfully. However, I am unable to locate where these declarations are stored, and when I try to reference the Jasmine types in other declarations, it fails.

$ find node_modules -name jasmine.*
node_modules/jasmine-core/lib/jasmine-core/jasmine.css
node_modules/jasmine-core/lib/jasmine-core/jasmine.js

Unfortunately, no TypeScript declaration file was found.

Answer №1

It's important to note that Jasmine's declaration file is located at

node_modules/@types/jasmine/index.d.ts
. To include it in a declaration file, you can use the following syntax:

/// <reference types="jasmine" />

declare function blah(): jasmine.CustomMatcher;

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