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lazy load script from cdn #30

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lazy load script from cdn #30

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34 changes: 15 additions & 19 deletions public/index.html
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Original file line number Diff line number Diff line change
@@ -1,24 +1,20 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<meta name="theme-color" content="#000000" />
<meta name="description" content="Web site created using create-react-app" />
<link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />

<head>
<meta charset="utf-8" />
<link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<meta name="theme-color" content="#000000" />
<meta name="description" content="Web site created using create-react-app" />
<link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
<link rel="manifest" href="%PUBLIC_URL%/manifest.json" />

<link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
<title>React App</title>
</head>

<title>React App</title>
</head>

<body>
<noscript>You need to enable JavaScript to run this app.</noscript>
<div id="root"></div>

<script src="https://cdn.checkout.com/js/framesv2.min.js"></script>
</body>

</html>
<body>
<noscript>You need to enable JavaScript to run this app.</noscript>
<div id="root"></div>
</body>
</html>
22 changes: 19 additions & 3 deletions src/frames/Frames.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -20,9 +20,14 @@ export class Frames extends Component<FramesProps> {
componentDidMount(): void {
const existingScript = document.querySelector(`script[src$="${CDN}"]`);
if (!existingScript) {
console.error(
`Checkout.com CDN not present. Perhaps you forgot to add <script src="${CDN}"></script> to your index.html file.`
);
(async () => {
try {
await this.loadScript();
this.initializeFrames();
} catch (error: any) {
throw new Error(error);
}
})();
} else {
this.initializeFrames();
}
Expand All @@ -41,6 +46,17 @@ export class Frames extends Component<FramesProps> {
return true;
}

loadScript = () => {
if (typeof window === 'undefined') return; // Don't execute this function if it's rendering on server side
return new Promise((resolve, reject) => {
const scriptTag = document.createElement('script');
scriptTag.src = CDN;
scriptTag.onload = (ev) => resolve(ev);
scriptTag.onerror = (err) => reject(err);
document.body.appendChild(scriptTag);
});
};

initializeFrames = () => {
let config = {
publicKey: this.props.config.publicKey,
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