JSPI + OPFS

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This example demonstrates JSPI (JS Promise Integration) by calling the browser's fully Promise-based Origin Private File System (OPFS) API from plain (non-async) Rust functions.

Requirements: Chrome 137+ (or 119–136 behind a flag), Firefox 153+, or Safari Technology Preview 238+; a secure context (HTTPS or localhost) for the OPFS API itself.

Cargo.toml

{{#include ../../../examples/jspi-opfs/Cargo.toml}}

src/lib.rs

{{#include ../../../examples/jspi-opfs/src/lib.rs}}