module.exports = loadWebAssembly

loadWebAssembly.supported = typeof WebAssembly !== 'undefined'

function loadWebAssembly (opts) {
  if (!loadWebAssembly.supported) return null

  var imp = opts && opts.imports
  var wasm = toUint8Array('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')
  var ready = null

  var mod = {
    buffer: wasm,
    memory: null,
    exports: null,
    realloc: realloc,
    onload: onload
  }

  onload(function () {})

  return mod

  function realloc (size) {
    mod.exports.memory.grow(Math.max(0, Math.ceil(Math.abs(size - mod.memory.length) / 65536)))
    mod.memory = new Uint8Array(mod.exports.memory.buffer)
  }

  function onload (cb) {
    if (mod.exports) return cb()

    if (ready) {
      ready.then(cb.bind(null, null)).catch(cb)
      return
    }

    try {
      if (opts && opts.async) throw new Error('async')
      setup({instance: new WebAssembly.Instance(new WebAssembly.Module(wasm), imp)})
    } catch (err) {
      ready = WebAssembly.instantiate(wasm, imp).then(setup)
    }

    onload(cb)
  }

  function setup (w) {
    mod.exports = w.instance.exports
    mod.memory = mod.exports.memory && mod.exports.memory.buffer && new Uint8Array(mod.exports.memory.buffer)
  }
}

function toUint8Array (s) {
  if (typeof atob === 'function') return new Uint8Array(atob(s).split('').map(charCodeAt))
  return (require('buf' + 'fer').Buffer).from(s, 'base64')
}

function charCodeAt (c) {
  return c.charCodeAt(0)
}