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75 lines
2.2 KiB
75 lines
2.2 KiB
2 weeks ago
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import arrayEach from './_arrayEach.js';
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import arrayPush from './_arrayPush.js';
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import baseFunctions from './_baseFunctions.js';
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import copyArray from './_copyArray.js';
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import isFunction from './isFunction.js';
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import isObject from './isObject.js';
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import keys from './keys.js';
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/**
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* Adds all own enumerable string keyed function properties of a source
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* object to the destination object. If `object` is a function, then methods
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* are added to its prototype as well.
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*
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* **Note:** Use `_.runInContext` to create a pristine `lodash` function to
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* avoid conflicts caused by modifying the original.
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*
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* @static
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* @since 0.1.0
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* @memberOf _
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* @category Util
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* @param {Function|Object} [object=lodash] The destination object.
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* @param {Object} source The object of functions to add.
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* @param {Object} [options={}] The options object.
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* @param {boolean} [options.chain=true] Specify whether mixins are chainable.
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* @returns {Function|Object} Returns `object`.
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* @example
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*
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* function vowels(string) {
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* return _.filter(string, function(v) {
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* return /[aeiou]/i.test(v);
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* });
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* }
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*
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* _.mixin({ 'vowels': vowels });
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* _.vowels('fred');
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* // => ['e']
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*
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* _('fred').vowels().value();
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* // => ['e']
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*
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* _.mixin({ 'vowels': vowels }, { 'chain': false });
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* _('fred').vowels();
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* // => ['e']
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*/
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function mixin(object, source, options) {
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var props = keys(source),
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methodNames = baseFunctions(source, props);
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var chain = !(isObject(options) && 'chain' in options) || !!options.chain,
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isFunc = isFunction(object);
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arrayEach(methodNames, function(methodName) {
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var func = source[methodName];
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object[methodName] = func;
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if (isFunc) {
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object.prototype[methodName] = function() {
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var chainAll = this.__chain__;
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if (chain || chainAll) {
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var result = object(this.__wrapped__),
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actions = result.__actions__ = copyArray(this.__actions__);
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actions.push({ 'func': func, 'args': arguments, 'thisArg': object });
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result.__chain__ = chainAll;
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return result;
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}
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return func.apply(object, arrayPush([this.value()], arguments));
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};
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}
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});
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return object;
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}
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export default mixin;
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