Definite assignment assertions are not supported

Rule arkts-no-definite-assignment

Severity: warning

ArkTS does not support definite assignment assertions let v!: T because they are considered an excessive compiler hint. Use declaration with initialization instead.

TypeScript

    let x!: number // Hint: x will be initialized before usage

    initialize()

    function initialize() {
        x = 10
    }

    console.log("x = " + x)

ArkTS

    function initialize() : number {
        return 10
    }

    let x: number = initialize()

    console.log("x = " + x)