用于静态类的TypeScript索引器

Question

Basically what I'm trying to do is getting a value from a static class. Like this:

export enum Test {
    A = 10,
    B = 20,
    C = 30

}

export class TestObject
{
    constructor(public ValueA: string, public ValueB: Date){}
}

export class TestValues {
    [key: number] : TestObject;
    public static 10: TestObject = new TestObject ('AAA', new Date());
    public static 20: TestObject = new TestObject ('BBB', new Date());
    public static 30: TestObject = new TestObject ('CCC', new Date());
}

var a = Test.A as number;
var result = TestValues[a];

This wil return the error:

Element implicitly has an 'any' type because
type 'typeof TestValues' has no index signature.

See typescript playground HERE

Answer 1

OK, so I fixed it by not exporting the static class anymore. I made it a normal class that I instantiate and export as a constant.

ANSWER:

export enum Test {
    A = 10,
    B = 20,
    C = 30

}

export class TestObject
{
    constructor(public ValueA: string, public ValueB: Date){}
}

class TestValuesDefinition {
    [key: number] : TestObject;
    public 10: TestObject = new TestObject ('AAA', new Date());
    public 20: TestObject = new TestObject ('BBB', new Date());
    public 30: TestObject = new TestObject ('CCC', new Date());
}

export const TestValues = new TestValuesDefinition();

// And than in the other file
var a = Test.A;
var result = TestValues[a];