Function createPlugin

Create a Plugin given a ManifestLike and ExtismPluginOptions.

Plugins wrap Wasm modules, exposing rich access to exported functions.

const plugin = await createPlugin(
  'https://github.com/extism/plugins/releases/download/v0.3.0/count_vowels.wasm',
  { useWasi: true }
);

try {
  const result = await plugin.call('count_vowels', 'hello world');
  const parsed = result.json();

  console.log(parsed); // { count: 3, total: 3, vowels: "aeiouAEIOU" }
} finally {
  await plugin.close();
}
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Plugin can run on a background thread when the environment supports it. You can see if the current environment supports background plugins by checking the hasWorkerCapability property of CAPABILITIES.