vant

utils/dist/wxs/array.wxs

@@ -0,0 +1,5 @@
+function isArray(array) {
+  return array && array.constructor === 'Array';
+}
+
+module.exports.isArray = isArray;

utils/dist/wxs/bem.wxs

@@ -0,0 +1,38 @@
+var array = require('./array.wxs');
+var object = require('./object.wxs');
+var PREFIX = 'van-';
+
+function join(name, mods) {
+  name = PREFIX + name;
+  mods = mods.map(function(mod) {
+    return name + '--' + mod;
+  });
+  mods.unshift(name);
+  return mods.join(' ');
+}
+
+function traversing(mods, conf) {
+  if (!conf) {
+    return;
+  }
+
+  if (typeof conf === 'string' || typeof conf === 'number') {
+    mods.push(conf);
+  } else if (array.isArray(conf)) {
+    conf.forEach(function(item) {
+      traversing(mods, item);
+    });
+  } else if (typeof conf === 'object') {
+    object.keys(conf).forEach(function(key) {
+      conf[key] && mods.push(key);
+    });
+  }
+}
+
+function bem(name, conf) {
+  var mods = [];
+  traversing(mods, conf);
+  return join(name, mods);
+}
+
+module.exports.bem = bem;

utils/dist/wxs/memoize.wxs

@@ -0,0 +1,54 @@
+/**
+ * Simple memoize
+ * wxs doesn't support fn.apply, so this memoize only support up to 2 args
+ */
+
+function isPrimitive(value) {
+  var type = typeof value;
+  return (
+    type === 'boolean' ||
+    type === 'number' ||
+    type === 'string' ||
+    type === 'undefined' ||
+    value === null
+  );
+}
+
+// mock simple fn.call in wxs
+function call(fn, args) {
+  if (args.length === 2) {
+    return fn(args[0], args[1]);
+  }
+
+  if (args.length === 1) {
+    return fn(args[0]);
+  }
+
+  return fn();
+}
+
+function serializer(args) {
+  if (args.length === 1 && isPrimitive(args[0])) {
+    return args[0];
+  }
+  var obj = {};
+  for (var i = 0; i < args.length; i++) {
+    obj['key' + i] = args[i];
+  }
+  return JSON.stringify(obj);
+}
+
+function memoize(fn) {
+  var cache = {};
+
+  return function() {
+    var key = serializer(arguments);
+    if (cache[key] === undefined) {
+      cache[key] = call(fn, arguments);
+    }
+
+    return cache[key];
+  };
+}
+
+module.exports.memoize = memoize;

utils/dist/wxs/object.wxs

@@ -0,0 +1,13 @@
+/* eslint-disable */
+var REGEXP = getRegExp('{|}|"', 'g');
+
+function keys(obj) {
+  return JSON.stringify(obj)
+    .replace(REGEXP, '')
+    .split(',')
+    .map(function(item) {
+      return item.split(':')[0];
+    });
+}
+
+module.exports.keys = keys;

utils/dist/wxs/utils.wxs

@@ -0,0 +1,7 @@
+var bem = require('./bem.wxs').bem;
+var memoize = require('./memoize.wxs').memoize;
+
+module.exports = {
+  bem: memoize(bem),
+  memoize: memoize
+};