build(deps): Bump is-promise from 2.1.0 to 4.0.0

[dependabot-preview]

Bumps is-promise from 2.1.0 to 4.0.0.

Release notes

Sourced from is-promise's releases.

4.0.0

Breaking Changes

• Use PromiseLike instead of Promise in TypeScript (#40)

  This is only a breaking change for TypeScript users.

  In the following code:

  function foo(x: PromiseLike`string> | string) {
    if (isPromise(x)) {
      return x;
    } else {
      return Promise.resolve(x);
    }
  }

  TypeScript would previously have incorrectly inferred foo as returning Promisestring>when in fact it returnsPromiseLikestring>. The latest version fixes this. If you instead had the following code, it should work exactly the same as before:

  function foo(x: Promise`string> | string) {
    if (isPromise(x)) {
      return x;
    } else {
      return Promise.resolve(x);
    }
  }

  This update is to reflect the fact that is-promise does "duck" typing, rather than an instanceof check.

3.0.0

Breaking Changes

• Restricted "exports" in package.json (for node 14+) (#30)

  The only ways to import this are now:

  import isPromise from 'is-promise';

  or

  const isPromise = require('is-promise');

... (truncated)

Commits

• 5a240f6 Use PromiseLike<T> intead of Promise<T>. Fixes #39 (#40)
• 1fc71a4 feat: use exports to expose an ES Module as well as CJS (#30)
• e5e834a test: add tests for .then on the prototype (#35)
• 19c6d89 feat: add typescript definitions (#31)
• 3af13e9 chore: remove .npmignore (#28)
• 2384dee ci: remove common-env context (#27)
• 8e7187d ci: setup circleci (#25)
• 34dc9f8 Test on Node 12 & 14 (#21)
• ca22483 Release 2.2.2
• 68d3d68 fix: remove exports
• Additional commits viewable in compare view

Maintainer changes

This version was pushed to npm by then-bot, a new releaser for is-promise since your current version.

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