48 lines
2.1 KiB
TypeScript
48 lines
2.1 KiB
TypeScript
// Copyright 2019-2025 @polkadot/extension-inject authors & contributors
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// SPDX-License-Identifier: Apache-2.0
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import type { Injected, InjectedExtension, InjectedWindow, InjectOptions } from './types.js';
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import { cyrb53 } from './cyrb53.js';
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export { packageInfo } from './packageInfo.js';
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// setting for new-style connect (more-secure with no details exposed without
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// user acknowledgement, however slightly less-compatible with all dapps, some
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// may have not upgraded and don't have access to the latest interfaces)
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//
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// NOTE: In future versions this will be made the default
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const IS_CONNECT_CAPABLE = false;
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// It is recommended to always use the function below to shield the extension and dapp from
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// any future changes. The exposed interface will manage access between the 2 environments,
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// be it via window (current), postMessage (under consideration) or any other mechanism
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export function injectExtension (enable: (origin: string) => Promise<Injected>, { name, version }: InjectOptions): void {
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// small helper with the typescript types, just cast window
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const windowInject = window as Window & InjectedWindow;
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// don't clobber the existing object, we will add it (or create as needed)
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windowInject.injectedWeb3 = windowInject.injectedWeb3 || {};
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if (IS_CONNECT_CAPABLE) {
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// expose our extension on the window object, new-style with connect(origin)
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windowInject.injectedWeb3[cyrb53(`${name}/${version}`)] = {
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connect: (origin: string): Promise<InjectedExtension> =>
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enable(origin).then(({ accounts, metadata, provider, signer }) => ({
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accounts, metadata, name, provider, signer, version
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})),
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enable: (): Promise<Injected> =>
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Promise.reject(
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new Error('This extension does not have support for enable(...), rather is only supports the new connect(...) variant (no extension name/version metadata without specific user-approval)')
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)
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};
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} else {
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// expose our extension on the window object, old-style with enable(origin)
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windowInject.injectedWeb3[name] = {
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enable: (origin: string): Promise<Injected> =>
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enable(origin),
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version
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};
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}
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}
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