nodejs: load libsimplex at runtime per backend

packages/simplex-chat-nodejs/docs/core.Function.loadLibrary.md

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+[**simplex-chat**](README.md)
+
+***
+
+[simplex-chat](README.md) / [core](Namespace.core.md) / loadLibrary
+
+# Function: loadLibrary()
+
+> **loadLibrary**(`backend`): `Promise`\<`void`\>
+
+Defined in: [src/core.ts:13](../src/core.ts#L13)
+
+Resolve (downloading on first use) and load libsimplex for the backend.
+One libsimplex per process: the Haskell runtime is initialized once, and another backend is rejected.
+
+## Parameters
+
+### backend
+
+[`Backend`](core.TypeAlias.Backend.md)
+
+## Returns
+
+`Promise`\<`void`\>