9 lines
199 B
JavaScript
9 lines
199 B
JavaScript
module.exports = function makeMap (str) {
|
|
var map = Object.create(null)
|
|
var list = str.split(',')
|
|
for (var i = 0; i < list.length; i++) {
|
|
map[list[i]] = true
|
|
}
|
|
return val => map[val]
|
|
}
|