lib/collection.js
function (prop, val) {
    this.setItem(prop, val);
    if (prop === 'app' || prop === 'collection') {
      this.define(prop, val);
    } else {
      lazy.set(this, prop, val);
    }
    return this;
  }
function (prop, val) {
    this.setItem(prop, val);
    if (prop === 'app' || prop === 'collection') {
      this.define(prop, val);
    } else {
      lazy.set(this, prop, val);
    }
    return this;
  }
function ( prop , val ) { this . setItem ( prop , val ) ; if ( prop === 'app' || prop === 'collection' ) { this . define ( prop , val ) ; } else { lazy . set ( this , prop , val ) ; } return this ; }
Set a value.
Set a value .