How can I write the code below in typescript?
export default class Auth extensions Vue {
public rules: { username : Array < string | boolean > , password : Array < string > } = {
// I don't know how to write the type definition when I write the Arrow function in the array below.
// Currently, the type has not been declared, so there is an error.
username: [
v=>!!v||"User name is required",
v=>(v&v.length>4)||"Username must be at least 5 characters long",
v=>/^[a-z0-9_]+$/.test(v)|| "You have entered unauthorized characters"
]
password: [
v=>!!v||"Password Required",
v=>(v&v.length>4)||"Username must be at least 5 characters long"
],
}
}
If you want to store function objects in an array, the second line is
public rules: {username:Array<Function>, password:Array<Function>} = {
Or
public rules: {username:Function[], password:Function[]} = {
You can write
If you want the arguments and return types of functions to be strict,
public rules: {username:(v:string)=>string|boolean)[], password:(v:string)=>string|boolean)[]}={
You can also write as shown in .
(You want the argument to be string and the return value to be string | boolean, right?)For example, if the argument is string | boolean, a type error occurs in the /^[a-z0-9_]+$/.test(v) part.)
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