80 lines
2.6 KiB
JavaScript
80 lines
2.6 KiB
JavaScript
|
/**
|
||
|
|
* empower-core - Power Assert feature enhancer for assert function/object.
|
||
|
|
*
|
||
|
|
* https://github.com/twada/empower-core
|
||
|
|
*
|
||
|
|
* Copyright (c) 2013-2016 Takuto Wada
|
||
|
|
* Licensed under the MIT license.
|
||
|
|
* https://github.com/twada/empower-core/blob/master/MIT-LICENSE.txt
|
||
|
|
*/
|
||
|
|
var create = require('core-js/library/fn/object/create');
|
||
|
|
var assign = require('core-js/library/fn/object/assign');
|
||
|
|
var defaultOptions = require('./lib/default-options');
|
||
|
|
var Decorator = require('./lib/decorator');
|
||
|
|
var define = require('./lib/define-properties');
|
||
|
|
var slice = Array.prototype.slice;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Enhance Power Assert feature to assert function/object.
|
||
|
|
* @param assert target assert function or object to enhance
|
||
|
|
* @param options enhancement options
|
||
|
|
* @return enhanced assert function/object
|
||
|
|
*/
|
||
|
|
function empowerCore (assert, options) {
|
||
|
|
var typeOfAssert = (typeof assert);
|
||
|
|
var enhancedAssert;
|
||
|
|
if ((typeOfAssert !== 'object' && typeOfAssert !== 'function') || assert === null) {
|
||
|
|
throw new TypeError('empower-core argument should be a function or object.');
|
||
|
|
}
|
||
|
|
if (isEmpowered(assert)) {
|
||
|
|
return assert;
|
||
|
|
}
|
||
|
|
switch (typeOfAssert) {
|
||
|
|
case 'function':
|
||
|
|
enhancedAssert = empowerAssertFunction(assert, options);
|
||
|
|
break;
|
||
|
|
case 'object':
|
||
|
|
enhancedAssert = empowerAssertObject(assert, options);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
throw new Error('Cannot be here');
|
||
|
|
}
|
||
|
|
define(enhancedAssert, { _empowered: true });
|
||
|
|
return enhancedAssert;
|
||
|
|
}
|
||
|
|
|
||
|
|
function empowerAssertObject (assertObject, options) {
|
||
|
|
var config = assign(defaultOptions(), options);
|
||
|
|
var target = config.destructive ? assertObject : create(assertObject);
|
||
|
|
var decorator = new Decorator(target, config);
|
||
|
|
return assign(target, decorator.enhancement());
|
||
|
|
}
|
||
|
|
|
||
|
|
function empowerAssertFunction (assertFunction, options) {
|
||
|
|
var config = assign(defaultOptions(), options);
|
||
|
|
if (config.destructive) {
|
||
|
|
throw new Error('cannot use destructive:true to function.');
|
||
|
|
}
|
||
|
|
var decorator = new Decorator(assertFunction, config);
|
||
|
|
var enhancement = decorator.enhancement();
|
||
|
|
var powerAssert;
|
||
|
|
if (typeof enhancement === 'function') {
|
||
|
|
powerAssert = function powerAssert () {
|
||
|
|
return enhancement.apply(null, slice.apply(arguments));
|
||
|
|
};
|
||
|
|
} else {
|
||
|
|
powerAssert = function powerAssert () {
|
||
|
|
return assertFunction.apply(null, slice.apply(arguments));
|
||
|
|
};
|
||
|
|
}
|
||
|
|
assign(powerAssert, assertFunction);
|
||
|
|
return assign(powerAssert, enhancement);
|
||
|
|
}
|
||
|
|
|
||
|
|
function isEmpowered (assertObjectOrFunction) {
|
||
|
|
return assertObjectOrFunction._empowered;
|
||
|
|
}
|
||
|
|
|
||
|
|
empowerCore.defaultOptions = defaultOptions;
|
||
|
|
module.exports = empowerCore;
|