Strange output with array.map

Question

I'm building a simple react native mobile app and get data from AsyncStorage. Here is a function that gets the data when the component mounts

  getClassData = async id => {
    const allRegs = (await AsyncStorage.getItem("regs")) || "[]";
    const items = JSON.parse(allRegs);
    console.log("All REGS", items);
    const classData = items.map((y, i) => (
    <View key={i}>
     <Text>{y.email}, {y.name}</Text>
      </View>
    ));
    console.log('ALL DATA',str)
  };

the first output is normal and looks like this.

All REGS
   Array [
     Object {
       "classID": 1,
        "email": "Mp@fgh.com",
        "name": "Allen",
          },
       ]

but after the map function that out in the console is this

ALL DATA

  Array [
   Object {
   "$$typeof": Symbol(react.element),
   "_owner": null,
   "key": "0",
   "props": Object {
     "children": Object {
    "$$typeof": Symbol(react.element),
    "_owner": null,
    "key": null,
    "props": Object {
    ......

Why isn't this simply giving me the output I expected (just a simple output with the data in views and text? Thanks.

Answer 1

AsyncStorage returns a promise. You need to call .then() to get the value when it is ready.

getClassData = async id => {
    await AsyncStorage.getItem("regs").then((allRegs) => {
        const items = JSON.parse(allRegs);
        console.log("All REGS", items);
        const classData = items.map((y, i) => {
            return(
                <View key={i}>
                    <Text>{y.email}{y.name}</Text>
                </View>
            );
        });
        console.log('ALL DATA', str);
    });
};

Answer 2

const items = [
       {
       name:'aaaa',
       email:'aaaa@gmail.com'
        },
       {
       name:<View>aksjdha</View>,
       email:'bbbb@gmail.com'
        },
       <View>qwds</View>
     ]


    let classData = items.map((y, i) => (
    <View key={i}>
     <Text>{y.email}, {y.name}</Text>
      </View>
    ));

you have something like jsx in your array object check it once.