it's still working?

[metrue]

I ran your demo, but it did not work, would you have any clues here?

$ node ffi_nodepst.js

/slowfs/swe74/codes/node-libpst/node_modules/ref/node_modules/bindings/bindings.js:79
        throw e
              ^
Error: /slowfs/swe74/codes/node-libpst/node_modules/ref/build/Release/binding.node: invalid ELF header
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Module.require (module.js:364:17)
    at require (module.js:380:17)
    at bindings (/slowfs/swe74/codes/node-libpst/node_modules/ref/node_modules/bindings/bindings.js:74:15)
    at Object.<anonymous> (/slowfs/swe74/codes/node-libpst/node_modules/ref/lib/ref.js:5:47)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)