kaelzhang / node-single-batch

Low level utility to handle single or batch methods.

single-batch

Low level utility to handle single or batch methods.

Install

$ npm install single-batch

Usage

import wrap from 'single-batch'

const obj = {
  add: (a, b) => Promise.resolve(a + b)
}

const wrapped = wrap('add', null, obj)

wrapped.single(1, 2).then(console.log)            // 3
wrapped.batch([1, 2], [2, 3]).then(console.log)   // [3, 4]

wrap(single, batch, context, singleArg)

• single function()
• batch function()
• context Object=
• singleArg Boolean=false

Returns

• null if single and batch methods are both unavailable
• {single: function, batch: function}

singleArg

If true, then wrapped.single only accept one argument, and each argument of wrapped.batch corresponds to the argument of wrapped.single

// singleArg: true
wrapped.single(1)
wrapped.batch(1, 2, 3)

wrapped.single([1, 2])
wrapped.batch([1, 2], [2, 3])

If false, wrapped.single accept multiple arguments, and each argument of wrapped.batch must be an array which represents the arguments of wrapped.single

wrapped.single(1, 2)
wrapped.batch([1, 2], [2, 3])

wrapped.single([1, 2])
wrapped.batch([[1, 2]], [[2, 3]])

License

MIT