import { isNumber, isPlainObject } from './validator'; export function isDef(value) { return value !== undefined && value !== null; } export function isObj(x) { const type = typeof x; return x !== null && (type === 'object' || type === 'function'); } export function range(num, min, max) { return Math.min(Math.max(num, min), max); } export function nextTick(fn) { setTimeout(() => { fn(); }, 1000 / 30); } let systemInfo; export function getSystemInfoSync() { if (systemInfo == null) { systemInfo = wx.getSystemInfoSync(); } return systemInfo; } export function addUnit(value) { if (!isDef(value)) { return undefined; } value = String(value); return isNumber(value) ? `${value}px` : value; } export function requestAnimationFrame(cb) { const systemInfo = getSystemInfoSync(); if (systemInfo.platform === 'devtools') { return nextTick(cb); } return wx .createSelectorQuery() .selectViewport() .boundingClientRect() .exec(() => { cb(); }); } export function pickExclude(obj, keys) { if (!isPlainObject(obj)) { return {}; } return Object.keys(obj).reduce((prev, key) => { if (!keys.includes(key)) { prev[key] = obj[key]; } return prev; }, {}); } export function getRect(selector) { return new Promise((resolve) => { wx.createSelectorQuery() .in(this) .select(selector) .boundingClientRect() .exec((rect = []) => resolve(rect[0])); }); } export function getAllRect(selector) { return new Promise((resolve) => { wx.createSelectorQuery() .in(this) .selectAll(selector) .boundingClientRect() .exec((rect = []) => resolve(rect[0])); }); }