@td-design/rn-hooks/lib/commonjs/useCounter/index.js

从ahooks里面抽取的一些在rn项目里可以使用的hooks。提高开发效率

'use strict';

var _tslib = require('../_virtual/_tslib.js');
var react = require('react');
var index = require('../useMemoizedFn/index.js');

/**
 * 步进器效果
 * @param initialValue
 * @param options
 * @returns
 */
function useCounter(initialValue, options) {
    if (initialValue === void 0) { initialValue = 0; }
    if (options === void 0) { options = {}; }
    var _a = _tslib.__read(react.useState(function () { return getTargetValue(initialValue, options); }), 2), current = _a[0], setCurrent = _a[1];
    var setValue = function (value) {
        setCurrent(function (c) {
            var target = typeof value === 'number' ? value : value(c);
            return getTargetValue(target, options);
        });
    };
    var inc = function (delta) {
        if (delta === void 0) { delta = 1; }
        setValue(function (c) { return c + delta; });
    };
    var dec = function (delta) {
        if (delta === void 0) { delta = 1; }
        setValue(function (c) { return c - delta; });
    };
    var set = function (value) {
        setValue(value);
    };
    var reset = function () {
        setValue(initialValue);
    };
    var actions = {
        inc: index(inc),
        dec: index(dec),
        set: index(set),
        reset: index(reset),
    };
    return [current, actions];
}
function getTargetValue(val, options) {
    if (options === void 0) { options = {}; }
    var min = options.min, max = options.max;
    var target = val;
    if (typeof max === 'number') {
        target = Math.min(max, target);
    }
    if (typeof min === 'number') {
        target = Math.max(min, target);
    }
    return target;
}

module.exports = useCounter;