This PR makes it so that if you only use _one_ export:
```ts
import { ed25519 } from '@noble/curves`;
```
…then only the `twistedEdwards` call that constructs that export will remain after bundling and tree-shaking.
Before this change, the compiled bundle contains all the code that constructs `ed25519ph` and `ed25519ctx` remains.
```js
var ed25519 = twistedEdwards(ed25519Defaults);
function ed25519_domain(data, ctx, phflag) {
if (ctx.length > 255)
throw new Error("Context is too big");
return concatBytes(utf8ToBytes("SigEd25519 no Ed25519 collisions"), new Uint8Array([phflag ? 1 : 0, ctx.length]), ctx, data);
}
twistedEdwards({ ...ed25519Defaults, domain: ed25519_domain });
twistedEdwards({
...ed25519Defaults,
domain: ed25519_domain,
prehash: sha512
});
```
```js
var ed25519 = twistedEdwards(ed25519Defaults);
```
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