初始化

uni_modules/UniDevTools/node_modules/licia/waitUntil.js

@@ -0,0 +1,36 @@
+var now = require('./now');
+exports = function(condition) {
+    var timeout =
+        arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
+    var interval =
+        arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 250;
+    function evalCondition() {
+        return new Promise(function(resolve, reject) {
+            try {
+                resolve(condition());
+            } catch (e) {
+                reject(e);
+            }
+        });
+    }
+    return new Promise(function(resolve, reject) {
+        var startTime = now();
+        var pollCondition = function() {
+            evalCondition().then(function(val) {
+                var elapsed = now() - startTime;
+                if (val) {
+                    resolve(val);
+                } else if (timeout && elapsed >= timeout) {
+                    reject(
+                        Error('Wait timed out after '.concat(timeout, ' ms'))
+                    );
+                } else {
+                    setTimeout(pollCondition, interval);
+                }
+            }, reject);
+        };
+        pollCondition();
+    });
+};
+
+module.exports = exports;