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| # Crossmint TypeScript Library | ||
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| [](https://github.com/fern-api/fern) | ||
| [](https://www.npmjs.com/package/crossmint) | ||
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| The Crossmint TypeScript library provides convenient access to the Crossmint API from TypeScript. | ||
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| ## Installation | ||
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| ```sh | ||
| npm i -s crossmint | ||
| ``` | ||
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| ## Usage | ||
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| Instantiate and use the client with the following: | ||
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| ```typescript | ||
| import { CrossmintClient, Crossmint } from "crossmint"; | ||
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| const client = new CrossmintClient({ apiKey: "YOUR_API_KEY" }); | ||
| await client.checkout.createOrder({ | ||
| payment: { | ||
| method: Crossmint.EvmPaymentMethods.ArbitrumSepolia, | ||
| currency: Crossmint.EvmPaymentCurrency.Eth, | ||
| }, | ||
| lineItems: { | ||
| collectionLocator: "crossmint:<collectionId>", | ||
| }, | ||
| }); | ||
| ``` | ||
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| ## Request And Response Types | ||
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| The SDK exports all request and response types as TypeScript interfaces. Simply import them with the | ||
| following namespace: | ||
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| ```typescript | ||
| import { Crossmint } from "crossmint"; | ||
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| const request: Crossmint.CheckoutCreateOrderRequest = { | ||
| ... | ||
| }; | ||
| ``` | ||
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| ## Exception Handling | ||
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| When the API returns a non-success status code (4xx or 5xx response), a subclass of the following error | ||
| will be thrown. | ||
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| ```typescript | ||
| import { CrossmintError } from "crossmint"; | ||
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| try { | ||
| await client.checkout.createOrder(...); | ||
| } catch (err) { | ||
| if (err instanceof CrossmintError) { | ||
| console.log(err.statusCode); | ||
| console.log(err.message); | ||
| console.log(err.body); | ||
| } | ||
| } | ||
| ``` | ||
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| ## Advanced | ||
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| ### Retries | ||
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| The SDK is instrumented with automatic retries with exponential backoff. A request will be retried as long | ||
| as the request is deemed retriable and the number of retry attempts has not grown larger than the configured | ||
| retry limit (default: 2). | ||
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| A request is deemed retriable when any of the following HTTP status codes is returned: | ||
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| - [408](https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/408) (Timeout) | ||
| - [429](https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/429) (Too Many Requests) | ||
| - [5XX](https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/500) (Internal Server Errors) | ||
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| Use the `maxRetries` request option to configure this behavior. | ||
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| ```typescript | ||
| const response = await client.checkout.createOrder(..., { | ||
| maxRetries: 0 // override maxRetries at the request level | ||
| }); | ||
| ``` | ||
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| ### Timeouts | ||
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| The SDK defaults to a 60 second timeout. Use the `timeoutInSeconds` option to configure this behavior. | ||
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| ```typescript | ||
| const response = await client.checkout.createOrder(..., { | ||
| timeoutInSeconds: 30 // override timeout to 30s | ||
| }); | ||
| ``` | ||
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| ### Aborting Requests | ||
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| The SDK allows users to abort requests at any point by passing in an abort signal. | ||
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| ```typescript | ||
| const controller = new AbortController(); | ||
| const response = await client.checkout.createOrder(..., { | ||
| abortSignal: controller.signal | ||
| }); | ||
| controller.abort(); // aborts the request | ||
| ``` | ||
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| ### Runtime Compatibility | ||
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| The SDK defaults to `node-fetch` but will use the global fetch client if present. The SDK works in the following | ||
| runtimes: | ||
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| - Node.js 18+ | ||
| - Vercel | ||
| - Cloudflare Workers | ||
| - Deno v1.25+ | ||
| - Bun 1.0+ | ||
| - React Native | ||
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| ### Customizing Fetch Client | ||
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| The SDK provides a way for your to customize the underlying HTTP client / Fetch function. If you're running in an | ||
| unsupported environment, this provides a way for you to break glass and ensure the SDK works. | ||
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| ```typescript | ||
| import { CrossmintClient } from "crossmint"; | ||
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| const client = new CrossmintClient({ | ||
| ... | ||
| fetcher: // provide your implementation here | ||
| }); | ||
| ``` | ||
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| ## Contributing | ||
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| While we value open-source contributions to this SDK, this library is generated programmatically. | ||
| Additions made directly to this library would have to be moved over to our generation code, | ||
| otherwise they would be overwritten upon the next generated release. Feel free to open a PR as | ||
| a proof of concept, but know that we will not be able to merge it as-is. We suggest opening | ||
| an issue first to discuss with us! | ||
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| On the other hand, contributions to the README are always very welcome! |
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