Generator: creation

Generators can be created in multiple ways

the most common way is by adding * after function

function g() {} assert.equal(String(g()), '[object Generator]');

as a function expression, by adding a * after function

let g = function() {}; assert.equal(String(g()), '[object Generator]');

inside an object by prefixing the function name with *

let obj = { g() {} }; assert.equal(String(obj.g()), '[object Generator]');

computed generator names, are just prefixed with a *

const generatorName = 'g'; let obj = { [generatorName]() {} }; assert.equal(String(obj.g()), '[object Generator]');

inside a class the same way

const generatorName = 'g'; class Klazz { [generatorName]() {} } assert.equal(String(new Klazz().g()), '[object Generator]');

Links

mdn docs Describes the `function*` declaration.

Required Knowledge

• `let` declaration (Block scope)
• `const` declaration (Block scope)
• computed properties (Object literal)
• creation (Class)

Related Katas

Generator

• creation
• iterator
• yield expressions
• send value to a generator
• send function to a generator
• return inside a generator function

Difficulty Level

TBD

First Published

1 June 2015

Stats

5 tests to solve