🔑 Variables and Secrets

Bindings

Variable and secrets are bound as follows:

JavaScript

const mf = new Miniflare({
  bindings: {
    KEY1: "value1",
    KEY2: "value2",
  },
});

Text and Data Blobs

Text and data blobs can be loaded from files. File contents will be read and bound as strings and ArrayBuffers respectively.

JavaScript

const mf = new Miniflare({
  textBlobBindings: { TEXT: "text.txt" },
  dataBlobBindings: { DATA: "data.bin" },
});

Globals

Injecting arbitrary globals is not supported by workerd ↗. If you're using a service Worker, bindings will be injected as globals, but these must be JSON-serialisable.