World is not properly typed in the latest wersion

[MilanJimi]

Node v12.19.0, TypeScript v4.2.4, @cucumber/cucumber v7.2.1, Ubuntu v20.04

I can no longer use World in my tests, because this is no longer typed inside the Given/When/Then functions, instead defaulting to being typed as any.

If I downgrade to version cucumber v7.0.0-rc.0, this is properly typed as World.

[davidjgoss]

Thanks for raising @MilanJimi, I can reproduce this and will fix.

In the meantime as a workaround, you can specify the type of this by prepending it to the function's arguments, e.g.:

import {Then, World} from '@cucumber/cucumber';

Then('the test runs with string parameter {string}', async function(this: World, parameter: string) {
    this.driver.close()
})

[charlierudolph]

I'm surprised this worked this in step definitions was ever auto-typed as World. @davidjgoss do you know how this was supported before / what changed that broke it?

[davidjgoss]

@charlierudolph no I don’t think it ever worked since our refactor to TypeScript. The second screenshot above is from v6 with (presumably) the types from DefinitelyTyped, which did type this as World - which was just an alias for an object with arbitrary props.