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52 lines
2.1 KiB
52 lines
2.1 KiB
4 years ago
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import identity from './identity';
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import { isArray, isObject } from './inspect';
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import { clone, hasOwnProperty, keys } from './object';
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import { lowerFirst, upperFirst } from './string'; // Prefix a property
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export var prefixPropName = function prefixPropName(prefix, value) {
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return prefix + upperFirst(value);
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}; // Remove a prefix from a property
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export var unprefixPropName = function unprefixPropName(prefix, value) {
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return lowerFirst(value.replace(prefix, ''));
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}; // Suffix can be a falsey value so nothing is appended to string
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// (helps when looping over props & some shouldn't change)
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// Use data last parameters to allow for currying
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export var suffixPropName = function suffixPropName(suffix, str) {
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return str + (suffix ? upperFirst(suffix) : '');
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}; // Copies props from one array/object to a new array/object
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// Prop values are also cloned as new references to prevent possible
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// mutation of original prop object values
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// Optionally accepts a function to transform the prop name
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export var copyProps = function copyProps(props) {
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var transformFn = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : identity;
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if (isArray(props)) {
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return props.map(transformFn);
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}
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var copied = {};
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for (var prop in props) {
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/* istanbul ignore else */
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if (hasOwnProperty(props, prop)) {
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// If the prop value is an object, do a shallow clone
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// to prevent potential mutations to the original object
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copied[transformFn(prop)] = isObject(props[prop]) ? clone(props[prop]) : props[prop];
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}
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}
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return copied;
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}; // Given an array of properties or an object of property keys,
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// plucks all the values off the target object, returning a new object
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// that has props that reference the original prop values
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export var pluckProps = function pluckProps(keysToPluck, objToPluck) {
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var transformFn = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : identity;
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return (isArray(keysToPluck) ? keysToPluck.slice() : keys(keysToPluck)).reduce(function (memo, prop) {
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memo[transformFn(prop)] = objToPluck[prop];
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return memo;
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}, {});
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};
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