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- let systemInfo;
- export function getSystemInfoSync() {
- if (systemInfo == null) {
- systemInfo = wx.getSystemInfoSync();
- }
- return systemInfo;
- }
- function compareVersion(v1, v2) {
- v1 = v1.split('.');
- v2 = v2.split('.');
- const len = Math.max(v1.length, v2.length);
- while (v1.length < len) {
- v1.push('0');
- }
- while (v2.length < len) {
- v2.push('0');
- }
- for (let i = 0; i < len; i++) {
- const num1 = parseInt(v1[i], 10);
- const num2 = parseInt(v2[i], 10);
- if (num1 > num2) {
- return 1;
- }
- if (num1 < num2) {
- return -1;
- }
- }
- return 0;
- }
- function gte(version) {
- const system = getSystemInfoSync();
- return compareVersion(system.SDKVersion, version) >= 0;
- }
- export function canIUseModel() {
- return gte('2.9.3');
- }
- export function canIUseFormFieldButton() {
- return gte('2.10.3');
- }
- export function canIUseAnimate() {
- return gte('2.9.0');
- }
- export function canIUseGroupSetData() {
- return gte('2.4.0');
- }
- export function canIUseNextTick() {
- try {
- return wx.canIUse('nextTick');
- }
- catch (e) {
- return gte('2.7.1');
- }
- }
- export function canIUseCanvas2d() {
- return gte('2.9.0');
- }
- export function canIUseGetUserProfile() {
- return !!wx.getUserProfile;
- }
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