@polkadot/extension-inject/bundle.js

A generic injector (usable to any extension), that populates the base exposed interfaces to be used by dapps.

import { cyrb53 } from './cyrb53.js';
export { packageInfo } from './packageInfo.js';
const IS_CONNECT_CAPABLE = false;
export function injectExtension(enable, { name, version }) {
    // small helper with the typescript types, just cast window
    const windowInject = window;
    // don't clobber the existing object, we will add it (or create as needed)
    windowInject.injectedWeb3 = windowInject.injectedWeb3 || {};
    if (IS_CONNECT_CAPABLE) {
        // expose our extension on the window object, new-style with connect(origin)
        windowInject.injectedWeb3[cyrb53(`${name}/${version}`)] = {
            connect: (origin) => enable(origin).then(({ accounts, metadata, provider, signer }) => ({
                accounts, metadata, name, provider, signer, version
            })),
            enable: () => Promise.reject(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)'))
        };
    }
    else {
        // expose our extension on the window object, old-style with enable(origin)
        windowInject.injectedWeb3[name] = {
            enable: (origin) => enable(origin),
            version
        };
    }
}