Tips for specifying types in protractor.conf.js while utilizing the @ts-check feature

Within my Angular CLI v7.3.6 project, there is a protractor.conf.js file that I'm looking to enhance with @ts-check in VSCode. When using @ts-check, I aim to execute the browser.getCapabilities() function in the onPrepare() callback but encountered an error message from VSCode stating '

Unable to find name 'browser'. ts(2304)
'.

I attempted to include the browser by registering it into Global. However, using the <reference path="..."/> syntax did not result in declaring browser.

/// <reference path="../node_modules/protractor/built/index.d.ts" />

There seems to be uncertainty on how to define Global properties with types within a JavaScript file (Node.js).

Any suggestions on how to properly declare the type of browser in the protractor.conf.js file?

angulartypescriptprotractorjsdoc

Answer №1

I have finally discovered the solution:

  1. To solve this problem, add the following comment at the beginning of the protractor.conf.js file.

    // @ts-check

  2. Create a local variable and obtain the actual value from the global scope, then provide typing for this local variable.

    /**
* @type { import("protractor").ProtractorBrowser }
*/
let browser = global['browser'];

Below is a screenshot showing how to use this solution:

https://i.sstatic.net/NeAxe.png

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