
Users of packages that have specialized code for the VM (which supports FFI) use conditional imports based on `dart.library.ffi`. We don't want the VM-specific code to be used for web in dart2wasm. As a result we're going to make `dart.library.ffi` be false in conditional imports (as well as in `const bool.fromEnvironment('dart.library.ffi')`). Issue https://github.com/dart-lang/sdk/issues/55948 Issue https://github.com/flutter/flutter/issues/149984