Typescript object with known properties dynamically

Question

I have a situation where I need to dynamically use an object property. Typescript doesn't like when I do that..

The situation is similar as the one described above.

How can I type check the Enum[val] or foo variable?

enum Enum {
    VAR1 = "A",
    VAR2 = "B",
}

const foo = ["VAR1", "VAR2"];
foo.forEach(val => {
    const a = Enum[val]; // Typescript doesn't like it (val implicitly has 'any' type...)
    const b = Enum[val as any]; // This is "OK", but I use "any", which I'm trying to avoid.
});

Matt McCutchen · Accepted Answer · 2018-07-31 21:56:04Z

3

const foo: (keyof typeof Enum)[] = ["VAR1", "VAR2"];

answered Jul 31, 2018 at 21:56

Matt McCutchen

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