Combine a regular function and a class so that methods of the class become chainable properties of the function that get called automatically.
npm install --save call-chainer
import chainer from 'call-chainer';
// First of all you need a class containing some methods
// It can contain non-methods too, those are not attached to the function
class Methods {
flags = {
always: false,
skip: false,
todo: false
}
always = () => {
this.flags.always = true;
}
skip = () => {
this.flags.skip = true;
}
todo = () => {
this.flags.todo = true;
}
}
// Then you need a function
// The function must receive as its first argument an instance of Methods
// That first argument is not exposed in the final chained function
const fn = ( methods: Methods, title: string ) => {
console.log ( title );
console.log ( methods.flags );
};
// Finally you need to chain the two together to get a new, chained, function
const fnChained = chainer ( Methods, fn );
// Then you can call methods on the chained function just by retrieving them as properties
fnChained.always.skip ( 'My title' );
// => 'My Title'
// => { always: true, skip: true, todo: false }
fnChained ( 'My title' );
// => 'My Title'
// => { always: false, skip: false, todo: false }
MIT © Fabio Spampinato