Package Exports

to-function

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (to-function) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

to-function

Convert property access strings into functions

Installation

$ component install component/to-function

Examples

var toFunction = require('to-function');
var fn = toFunction('name.first');
var user = { name: { first: 'Tobi' }};
fn(user);
// => "Tobi"

Dot access

var _ = require('..');

var users = [
  { name: { first: 'Tobi' }},
  { name: { first: 'Loki' }},
  { name: { first: 'Jane' }},
  { name: { first: 'Manny' }}
];

var short = users.map(_('name.first'));
console.log(short);
// => [ 'Tobi', 'Loki', 'Jane', 'Manny' ]

Equality

var _ = require('..');

var tobi = { name: { first: 'Tobi' }, age: 2 };
var loki = { name: { first: 'Loki' }, age: 2 };
var jane = { name: { first: 'Jane' }, age: 6 };

var users = [tobi, loki, jane];

var user = users.filter(_(loki)).pop();
console.log(user);
// => { name: { first: 'Loki' }, age: 2 }

Expressions

var _ = require('..');

var users = [
  { name: { first: 'Tobi' }, age: 2 },
  { name: { first: 'Loki' }, age: 2 },
  { name: { first: 'Jane' }, age: 6 }
];

var oldPets = users.filter(_('age > 2 && age < 10'));
console.log(oldPets);
// => [ { name: { first: 'Jane' }, age: 6 } ]

Regular expressions

var _ = require('..');

var users = [
  'Tobi',
  'Loki',
  'Jane'
];

var t = users.filter(_(/^T/));

console.log(t);
// => [ 'Tobi' ]

Nesting

var _ = require('..');

var users = [
  { name: { first: 'Tobi', last: 'Ferret' }, age: 2 },
  { name: { first: 'Loki', last: 'Ferret' }, age: 2 },
  { name: { first: 'Luna', last: 'Cat' }, age: 2 },
  { name: { first: 'Manny', last: 'Cat' }, age: 3 }
];

// single-key

var query = _({
  name: {
    last: 'Cat'
  }
});

console.log(users.filter(query));
// => [ { name: { first: 'Luna', last: 'Cat' }, age: 2 },
//      { name: { first: 'Manny', last: 'Cat' }, age: 3 } ]

// multi-key

var query = _({
  name: {
    first: /^L/,
    last: 'Cat'
  }
});

console.log(users.filter(query));
// => [ { name: { first: 'Luna', last: 'Cat' }, age: 2 } ]

// multi-level

var query = _({
  name: { last: 'Cat' },
  age: 3
});

console.log(users.filter(query));
// => [ { name: { first: 'Manny', last: 'Cat' }, age: 3 } ]

License

MIT