Count the instances of each value in an array, ignoring any non-string values.
npm install count-array-values --save
var count = require('count-array-values')
count(['foo', 'bar', 'Bar', 451, 'bar', 'bar', 'baz', 'foo', null, undefined])
// [
// {value: 'bar', count: 3},
// {value: 'foo', count: 2},
// {value: 'Bar', count: 1},
// {value: 'baz', count: 1},
// ]
If you'd like to use a more relevant property name than value, specify it
as the second argument when calling the function:
count(['apple', 'banana', 'apple'], 'fruit')
// [
// {fruit: 'apple', count: 2},
// {fruit: 'banana', count: 1}
// ]
You can also override the name of the count property:
const packages = ['express', 'lodash', 'express', 'lodash', 'express', 'banana']
count(packages, 'package', 'dependents')
// [
// {package: 'express', dependents: 3},
// {package: 'lodash', dependents: 2},
// {package: 'banana', dependents: 1}
// ]
npm install
npm test
None
MIT