The glue module, import * as glue from './<name>.js'.
The <name>_bg.wasm bytes as base64, the default export of the module
scripts/build-wasm.mjs writes beside the glue.
Each package that ships a binding keeps a module of its own that does nothing but import its
glue and its base64 and call this: a bundler makes a lazy chunk only from a literal import()
path, so those two imports cannot live here. The bytes are decoded rather than fetched as a
data: URL, which a Content Security Policy may forbid and Node's fetch cannot read.
Instantiates a
wasm-bindgen --target webmodule from its binary carried as base64, and returns the glue's exports, ready to call.