In typescript, how to export enum type defined in a module?

Question

I have an enum type with many items and therefore I want to put the definition in an individual file. The type is defined as

const enum Band {
  B2190m = '2190m',
  B631m  = '631m',
   // ... etc. many more
};

However, trying to export this by export or export default fails with "Expression expected" TS1109. What is the correct way to do this?

Thank you.

user14915326 · Accepted Answer · 2020-12-30 19:42:12Z

1

const enum is inlined while transpilation to js, so can't be exported. You should emit "const" and use just enum:

export enum Band {
...

answered Dec 30, 2020 at 19:42

user14915326

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1 Comment

Jindrich Vavruska Over a year ago

Hello, unfortunately it doesn't work for "plain enum", either. That was actually my first attempt, later I tried const enum as another possibility. I suspect there is some piece of TS documentation that I missed or did not understand. Never mind, I will read through the docs again.

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