29 lines
586 B
JavaScript
29 lines
586 B
JavaScript
|
'use strict'
|
||
|
|
|
||
|
|
module.exports = factory
|
||
|
|
|
||
|
|
var noop = Function.prototype
|
||
|
|
var own = {}.hasOwnProperty
|
||
|
|
|
||
|
|
// Handle values based on a property.
|
||
|
|
function factory(key, options) {
|
||
|
|
var settings = options || {}
|
||
|
|
|
||
|
|
function one(value) {
|
||
|
|
var fn = one.invalid
|
||
|
|
var handlers = one.handlers
|
||
|
|
|
||
|
|
if (value && own.call(value, key)) {
|
||
|
|
fn = own.call(handlers, value[key]) ? handlers[value[key]] : one.unknown
|
||
|
|
}
|
||
|
|
|
||
|
|
return (fn || noop).apply(this, arguments)
|
||
|
|
}
|
||
|
|
|
||
|
|
one.handlers = settings.handlers || {}
|
||
|
|
one.invalid = settings.invalid
|
||
|
|
one.unknown = settings.unknown
|
||
|
|
|
||
|
|
return one
|
||
|
|
}
|