Passing array to typescript rest parameter

Question

Is there a way how to pass array of arguments into typescript rest parameter, without changing implementation of Foo class ?

    class Foo{
        constructor(...restParam : string[]){}
    }

    class Test{
        CallFoo = () => {
            // Working
            let foo = new Foo("t", "t");

            // Compilation error 
            let restParamValues = ["t", "t"];
            let foo2 = new Foo(restParamValues);
    };

Error: Argument of type 'string[]' is not assignable to parameter of type 'string'.

Duncan · Accepted Answer · 2017-09-20 15:47:52Z

4

Use the typescript spread operator:

let foo = new Foo(...restParamValues);

answered Sep 20, 2017 at 15:47

Duncan

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