Omit doesn't seem to work

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  • feature request
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Expected Behavior

Omit should be able to be used to create types.

Current Behavior

An error is generated:

Error: No matching model found for referenced type Omit. If Omit comes from a dependency, please create an interface in your own code that has the same structure. Tsoa can not utilize interfaces from external dependencies. Read more at https://github.com/lukeautry/tsoa/blob/master/docs/ExternalInterfacesExplanation.MD

Reproduction Code

export interface NewIndicator extends Omit<IndicatorBase, 'formula'> {
    ownerId?: string | null;
    formula?: string;
}

Context (Environment)

Version of the library: 3.4.0 Version of NodeJS: 13.14.0

• Confirm you were using yarn not npm: [X]

[WoH]

We use Omit a lot throughout our tests, which makes me fairly confident in asserting that it’s not us. Everything else you said has nothing to do with the issue.

Omit is built into TypeScript.

Location is still in node_modules, which you probably are still excluding from your program.

My advice would be to not down vote for giving you a hint despite the duplicated issue and instead prove your issue with a repro if you’re so confident it’s an issue.

[WoH]

I don’t tend to actively close issues which are unresolved. However, most of this discussion is a duplicate of https://github.com/lukeautry/tsoa/issues/774 and https://github.com/lukeautry/tsoa/issues/784 as well as the list of issues listed in #774:

• #340
• #377
• #334
• #205

Tl:Dr from there: The error message should be improved, but external dependencies can be resolved if you include them. However, including everything in node_modules for example carries a build performance penalty, which is why we generally don’t recommend it. If you can, just include the types which are used at the edge of your program to build the spec and the routes (read: controller methods).