Refactor TypeScript definition to CommonJS compatible export

[BendingBender]

Breaking change for the same reasons as PCancelable.

[Codex-]

@sindresorhus , Fyi, changelog specifies

You need to change import pQueue from 'p-queue'; to import pQueue = require('p-queue');

But import pQueue from 'p-queue'; is still valid from my testing 🤔🤔

[BendingBender]

This will still work for you if you use either the syntheticDefaultImports or the esModuleInterop compiler flags. If you would disable them, then you would get an error.

In the case of syntheticDefaultImports it will compile but break at runtime if you don't use an additional compile step (WebPack, Babel, ...) that adds the default property to every lib that don't have it.

[Codex-]

Ah good point, I tested without allowSyntheticDefaultImports enabled, but did have esModuleInterop enabled 👍