Can anyone explain why TypeScript isn't providing autofill suggestions for "foo" or "bar" when typing elements into an empty array in the code snippet below?
const map: Map<string, ('foo' | 'bar')[]> = new Map([
['hello', []],
['world', []],
]);
Although it correctly shows an error if something other than "foo" or "bar" is entered into the array, there are no suggestions. Is this potentially a tsconfig issue or am I structuring this Map incorrectly?
To set up your Map, make sure to include a generic:
new Map<string, ('foo' | 'bar')[]>()In your case, you assigned an explicit type to your map variable. Instead, utilize the generic constructor of Map so that the type is automatically inferred correctly, eliminating the need for the explicit type.
const map = new Map<string, ('foo' | 'bar')[]>([
['hello', []],
['world', []],
]);
When storing your Map into a typed map, it is important to ensure that you are defining the types correctly from the beginning. Instead of creating a generic map first, make sure to set the types accordingly like so:
const map: Map<string, ('foo' | 'bar')[]> = new Map<string, ('foo' | 'bar')[]>([
['hello', []],
['world', []],
]);
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