diff --git a/README.md b/README.md
index ed2742dd..0eca102c 100644
--- a/README.md
+++ b/README.md
@@ -10,39 +10,22 @@ function provided by the Stripe.js script as an ES module.
[](https://www.npmjs.com/package/@stripe/stripe-js)
-## Usage
-
-### `Stripe`
-
-To use the exported `Stripe` function, first include the Stripe.js script on
-each page of your site.
-
-```html
-
-```
+## Installation
-Then import and use Stripe.js as you would any other module.
-
-```js
-import {Stripe} from '@stripe/stripe-js';
+Use `npm` to install the Stripe.js module:
-const stripe = Stripe('pk_test_TYooMQauvdEDq54NiTphI7jx');
+```sh
+npm install @stripe/stripe-js
```
-We’ve placed a random API key in this example. Replace it with your
-[actual publishable API keys](https://dashboard.stripe.com/account/apikeys) to
-test this code through your Stripe account.
-
-For more information on how to use Stripe.js, please refer to the
-[Stripe.js API reference](https://stripe.com/docs/js) or learn to
-[accept a payment](https://stripe.com/docs/payments/accept-a-payment) with
-Stripe.
+## Usage
### `loadStripe`
This function returns a `Promise` that resolves with a newly created `Stripe`
object once Stripe.js has loaded. If necessary, it will load Stripe.js for you
-by inserting the Stripe.js script tag.
+by inserting the Stripe.js script tag. If you call `loadStripe` in a server
+environment it will resolve to `null`.
```js
import {loadStripe} from '@stripe/stripe-js';
@@ -66,11 +49,12 @@ loaded on every page, not just your checkout page. This allows Stripe to detect
anomalous behavior that may be indicative of fraud as customers browse your
website.
-If you are adding the `
-
-See https://stripe.com/docs/js/including for more information.
-`;
-
-const hasUserIncludedScript = () =>
- document.querySelector(`script[src="${V3_URL}"]`) && !hasInjectedScript;
-
-export const Stripe = (...args) => {
- if (window && window.Stripe) {
- return window.Stripe(...args);
- }
-
- if (hasCalledLoadStripe || hasUserIncludedScript()) {
- throw new Error(STRIPE_NOT_LOADED_ERROR_TEXT);
- }
-
- throw new Error(STRIPE_UNAVAILABLE_ERROR_TEXT);
-};
diff --git a/src/index.test.js b/src/index.test.js
index 244e39b8..50dc51ba 100644
--- a/src/index.test.js
+++ b/src/index.test.js
@@ -96,46 +96,4 @@ describe('Stripe module loader', () => {
});
});
});
-
- describe('Stripe proxy', () => {
- it('proxies to window.Stripe when present', () => {
- const {Stripe} = require('./index');
- window.Stripe = jest.fn((key) => ({key}));
-
- expect(Stripe('pk_test_foo')).toEqual({key: 'pk_test_foo'});
- });
-
- it('throws when Stripe.js has not yet loaded from a user injected script', () => {
- const {Stripe} = require('./index');
- const script = document.createElement('script');
- script.src = 'https://js.stripe.com/v3';
- document.body.appendChild(script);
-
- expect(() => Stripe('pk_test_foo')).toThrow(
- 'Stripe.js has not yet loaded.'
- );
- });
-
- it('throws when Stripe.js has not yet loaded after calling loadStripe', () => {
- const {loadStripe, Stripe} = require('./index');
-
- loadStripe();
-
- expect(() => Stripe('pk_test_foo')).toThrow(
- 'Stripe.js has not yet loaded.'
- );
- });
-
- it('throws when Stripe.js has not been included', () => {
- const {Stripe} = require('./index');
-
- return Promise.resolve(() => {
- // Wait for next tick to validate this error is thrown
- // even after our own script has been added.
- expect(() => Stripe('pk_test_foo')).toThrow(
- 'window.Stripe.js is not defined.'
- );
- });
- });
- });
});