Mastering Immutable.js

Parameterizing mapped behavior

If you could pass arguments to the behavior that gets invoked when you call your behavior functions, it would be nice. This would mean that your behavior function would have to forward the arguments that it receives to the functions that it looks up from the behavior map:

const log = value => console.log('log:', value);const myBehavior = (action, ...args) => Map.of(  'start', value => log(`starting ${value}...`),  'stop', value => log(`stopping ${value}...`)).get(  action,  () => {})(...args);myBehavior('start', 'database');// -> log: starting database...myBehavior('start', 'server');// -> log: starting server...myBehavior('stop', 'database');// -> log: stopping database...myBehavior('stop', 'server');// -> log: ...