feat: drop support for browsers without promises (#381)

.changeset/nice-cameras-flash.md

@@ -0,0 +1,5 @@
+---
+'hibp': major
+---
+
+Drop support for browsers without native Promise implementations. In reality, this likely didn't change anything.

README.md

@@ -116,11 +116,6 @@ happen).
 
 #### Using in the browser
 
-**Prerequisite:** This module requires a Promise implementation to exist in the
-global namespace prior to being loaded. Therefore, to facilitate usage in
-[browsers without native Promise support][caniuse-promise], you are responsible
-for providing a polyfill. I recommend [es6-promise][es6-promise].
-
 You have several options for using this library in a browser environment:
 
 1. Bundled
@@ -216,8 +211,6 @@ This module is distributed under the [MIT License][license].
 [caniuse-esm]: https://caniuse.com/#feat=es6-module
 [js-modules]: https://v8.dev/features/modules#browser
 [webpack]: https://webpack.js.org
-[caniuse-promise]: https://caniuse.com/#search=promise
-[es6-promise]: https://github.com/stefanpenner/es6-promise
 [runkit]: https://runkit.com/npm/hibp
 [pwned]: https://github.com/wKovacs64/pwned
 [pulls]: https://github.com/wKovacs64/hibp/pulls

docs/index.md

@@ -113,12 +113,6 @@ happen).
 
 #### Using in the browser
 
-**Prerequisite:** This module requires a Promise implementation to exist in the
-global namespace prior to being loaded. Therefore, to facilitate usage in
-[browsers without native Promise support](https://caniuse.com/#search=promise),
-you are responsible for providing a polyfill. I recommend
-[es6-promise](https://github.com/stefanpenner/es6-promise).
-
 You have several options for using this library in a browser environment:
 
 1. Bundled

rollup.config.mjs

@@ -128,7 +128,7 @@ export default [
             {
               modules: 'umd',
               targets: {
-                browsers: ['> 1%', 'last 2 versions'],
+                browsers: ['defaults', 'supports promises'],
               },
             },
           ],