parameterizer concept

parameterizer_concept.js

const boolean = require( 'boolean' );

...
// look at object-transmute as a helper for implementing this
parameterizer( [ {
    inputs: [ 'limit', 'max' ],
    output: 'limit',
    default: 10,
    min: 1,
    max: 100,
    process: value => {
        return value / 10;
    },
    validate: value => {
        return typeof value === 'number';
    }
}, {
    inputs: [ 'foo', 'foo2' ],
    output: 'foo',
    default: false,
    process: value => {
        return boolean( value );
    }
} ], [
    request.params,
    request.query,
    request.headers
], ( error, params ) => {
    if ( error ) {
        response.send( error.status || 500, error );
        return;
    }
    
    // params...
} );