JSDoc does not pick up type imported from foreign modules using require

[KtorZ]

In the lights of #14056, the import of type defined by Classes seems to work fine from within a module (using local imports) but does not go beyond it. Therefore, where the following example works fine:

TypeScript Versions: 2.7.0-dev.20171102, 2.6.1

Code

module: A, file: a.js

class Action { /* whatever */ }

module.exports = Action;

module: A, file: b.js

const Action = require('./a');

/**
 * @param {Action} arg 
 */
function foo(arg) { /* whatever */ }

Here the type is picked up correctly in b.js and typescript works like a charm. However, if A is used as an installed dependency from another module:

module B, file c.js

const Action = require('A/a');

/**
 * @param {Action} arg
 */
function bar(arg) { /* whatever */ }

Actual behavior:

Typescript complains with the following:

error TS2304: Cannot find name 'Action'.

Expected behavior:

Is this an intended behavior or, should the type also be picked up? I don't see how and why using a module as a dependency should remove the initial behavior.

Thanks for the help 👍

[ghost]

When it's from node_modules we probably aren't checking it at all, thus Action would just be a variable of type any. (You probably don't have --noImplicitAny set.)
Ideally the package A would have something on DefinitelyTyped to provide types.
You could also try increasing --maxNodeModuleJsDepth to pick up those files into the project, although that can slow build times.

[typescript-bot]

Automatically closing this issue for housekeeping purposes. The issue labels indicate that it is unactionable at the moment or has already been addressed.