source: imaps-frontend/node_modules/color-convert/index.js

var conversions = require('./conversions');
var route = require('./route');

var convert = {};

var models = Object.keys(conversions);

function wrapRaw(fn) {
        var wrappedFn = function (args) {
                if (args === undefined || args === null) {
                        return args;
                }

                if (arguments.length > 1) {
                        args = Array.prototype.slice.call(arguments);
                }

                return fn(args);
        };

        // preserve .conversion property if there is one
        if ('conversion' in fn) {
                wrappedFn.conversion = fn.conversion;
        }

        return wrappedFn;
}

function wrapRounded(fn) {
        var wrappedFn = function (args) {
                if (args === undefined || args === null) {
                        return args;
                }

                if (arguments.length > 1) {
                        args = Array.prototype.slice.call(arguments);
                }

                var result = fn(args);

                // we're assuming the result is an array here.
                // see notice in conversions.js; don't use box types
                // in conversion functions.
                if (typeof result === 'object') {
                        for (var len = result.length, i = 0; i < len; i++) {
                                result[i] = Math.round(result[i]);
                        }
                }

                return result;
        };

        // preserve .conversion property if there is one
        if ('conversion' in fn) {
                wrappedFn.conversion = fn.conversion;
        }

        return wrappedFn;
}

models.forEach(function (fromModel) {
        convert[fromModel] = {};

        Object.defineProperty(convert[fromModel], 'channels', {value: conversions[fromModel].channels});
        Object.defineProperty(convert[fromModel], 'labels', {value: conversions[fromModel].labels});

        var routes = route(fromModel);
        var routeModels = Object.keys(routes);

        routeModels.forEach(function (toModel) {
                var fn = routes[toModel];

                convert[fromModel][toModel] = wrapRounded(fn);
                convert[fromModel][toModel].raw = wrapRaw(fn);
        });
});

module.exports = convert;