Why are traditional Angular dependencies still necessary even when typedefinitions are being used?

I am currently in the process of transitioning my Angular 1.5 project to use TypeScript. The project is compiled with webpack and even though I have included Angular type definitions in my package.json file as shown below,

"@types/angular": "~1.5.19",
"@types/angular-mocks": "~1.5.5",
"@types/angular-route": "~1.3.2",
"@types/jasmine": "~2.5.37",
"@types/jwt-decode": "~1.4.28",
"@types/lodash": "~4.14.38",
"@types/source-map": "~0.1.29",
"@types/uglify-js": "~2.6.28",
"angular": "~1.5.8",
"angular-mocks": "^1.6.1",
"angular-route": "~1.5.8",

I still require "angular": "~1.5.8" to be present. If it is removed, I encounter an error stating "Cannot resolve module 'angular'.

You can find a link to my repository here.

My question is, why do I still need JavaScript Angular if TypeScript is included?

A big thank you to all those who can shed some light on this matter!

angularjstypescript

Answer №1

Modules in TypeScript are essential for defining different types of code structures. If these modules are missing, the TypeScript compiler will generate an error.

To learn more about this topic, you can refer to the following resources: here and here.

Some packages come with their own typings already incorporated, eliminating the need to use additional @types or typings. These packages typically include a specific typings section within their package.json file.

In summary: For users of TypeScript working with packages that lack their own typings, utilizing @types or typings is necessary.

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