first add files

ProjectLiaisonForm/pages/tab-bar/icon-only/index.js

@@ -0,0 +1,19 @@
+Component({
+  data: {
+    value: 'label_1',
+    list: [
+      { value: 'label_1', icon: 'home', ariaLabel: '首页' },
+      { value: 'label_2', icon: 'app', ariaLabel: '软件' },
+      { value: 'label_3', icon: 'chat', ariaLabel: '聊天' },
+      { value: 'label_4', icon: 'user', ariaLabel: '我的' },
+    ],
+  },
+
+  methods: {
+    onChange(e) {
+      this.setData({
+        value: e.detail.value,
+      });
+    },
+  },
+});

ProjectLiaisonForm/pages/tab-bar/icon-only/index.json

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+{
+  "component": true,
+  "styleIsolation": "apply-shared",
+  "usingComponents": {
+    "t-tab-bar": "tdesign-miniprogram/tab-bar/tab-bar",
+    "t-tab-bar-item": "tdesign-miniprogram/tab-bar-item/tab-bar-item"
+  }
+}

ProjectLiaisonForm/pages/tab-bar/icon-only/index.wxml

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+<t-tab-bar t-class="t-tab-bar" value="{{value}}" bindchange="onChange" theme="tag" split="{{false}}">
+  <t-tab-bar-item
+    wx:for="{{list}}"
+    wx:key="value"
+    value="{{item.value}}"
+    icon="{{item.icon}}"
+    ariaLabel="{{item.ariaLabel}}"
+  ></t-tab-bar-item>
+</t-tab-bar>