`Function.bind` is not supported

Rule arkts-no-func-bind

Severity: warning

ArkTS does not allow using standard library function Function.bind. This API is needed in the standard library to explicitly set this parameter for the called function. In ArkTS the semantics of this is restricted to the conventional OOP style, and the usage of this in stand-alone functions is prohibited. Thus this function is excessive.

TypeScript


    const person = {
        firstName: "aa",

        fullName: function(): string {
            return this.firstName
        }
    }

    const person1 = {
        firstName: "Mary"
    }

    // This will log "Mary":
    const boundFullName = person.fullName.bind(person1)
    console.log(boundFullName())

ArkTS


    class Person {
        firstName : string

        constructor(firstName : string) {
            this.firstName = firstName
        }
        fullName() : string {
            return this.firstName
        }
    }

    let person = new Person("")
    let person1 = new Person("Mary")

    // This will log "Mary":
    console.log(person1.fullName())

Function.bind is not supported

TypeScript

ArkTS

See also

`Function.bind` is not supported