# wizer > Prebuilt wizer binaries available via npm ## API ``` $ npm install --save @bytecodealliance/wizer ``` ```js const execFile = require('child_process').execFile; const wizer = require('@bytecodealliance/wizer'); execFile(wizer, ['input.wasm', '-o', 'initialized.wasm'], (err, stdout) => { console.log(stdout); }); ```