any type JS-0323123}
124
125
126function showModal(item: any) {127 modalValue.value.user = item.user;
128 modalValue.value.generalPresentationDecision = item.generalPresentationDecision;
129 modalValue.value.professionalFieldDecision1 = item.professionalFieldDecision1;109 showDeleteModal.value = true;
110}
111
112let newMail = (item: any) => {113 userToNewMail.value = item;
114 showNewLinkModal.value = true;
115}104let userToDelete = ref({});
105let userToNewMail = ref({});
106
107let deleteUser = (item: any) => {108 userToDelete.value = item;
109 showDeleteModal.value = true;
110}The any type can sometimes leak into your codebase. TypeScript compiler skips the type checking of the any typed variables, so it creates a potential safety hole, and source of bugs in your codebase. We recommend using unknown or never type variable.
In TypeScript, every type is assignable to any. This makes any a top type (also known as a universal supertype) of the type system.
The any type is essentially an escape hatch from the type system. As developers, this gives us a ton of freedom: TypeScript lets us perform any operation we want on values of type any without having to perform any checking beforehand.
The developers should not assign any typed value to variables and properties, which can be hard to pick up on, especially from the external library; instead, developers can use the never or unknown type variable.
Bad Practice
const age: any = 'seventeen';
const ages: any[] = ['seventeen'];
const ages: Array<any> = ['seventeen'];
function greet(): any {}
function greet(): any[] {}
function greet(): Array<any> {}
function greet(): Array<Array<any>> {}
function greet(param: Array<any>): string {}
function greet(param: Array<any>): Array<any> {}
Recommended
const age: number = 17;
const ages: number[] = [17];
const ages: Array<number> = [17];
function greet(): string {}
function greet(): string[] {}
function greet(): Array<string> {}
function greet(): Array<Array<string>> {}
function greet(param: Array<string>): string {}
function greet(param: Array<string>): Array<string> {}