export default function valoo(v) {
  const cb = [];
  function value(c) {
    if (arguments.length) cb.map(f => { f && f(v=c); });
    return v;
  }
  value.on = c => {
    const i = cb.push(c)-1;
    return () => { cb[i] = 0; };
  };
  return value;
}

declare module "valoo" {
  namespace valoo {
    type Disposer = () => void;
    interface Observable<T> {
      (): T;
      (value: T): void;
      on(fn: (value: T) => void): Disposer;
    }
  }

  function valoo<T = any>(value: T): valoo.Observable<T>;
  export = valoo;
}

export default (v, cb=[]) => c => {
  if (c===void 0) return v
  if (c.call) return cb.splice.bind(cb, cb.push(c)-1, 1, 0)
  v = c; for (c of cb) c && c(v)
}

export default (v, cb=[]) => c => c===void 0 ? v : c.call ? cb.push(c) : cb.map(f=>f(v=c)) && v

{
  "name": "valoo",
  "version": "2.1.0",
  "module": "valoo.mjs",
  "main": "dist/valoo.js",
  "types": "./valoo.d.ts",
  "license": "Apache-2.0",
  "scripts": {
    "prepublishOnly": "cp *valoo.md README.md;microbundle valoo.mjs"
  },
  "devDependencies": {
    "microbundle": "^0.5.1"
  }
}

node_modules
package-lock.json
dist
README.md