More specific type definitions for addJob

[nathanbabcock]

The current type definition for addJob is as follows:

addJob(action: string, ...args: any[]): Promise<ConfigResult | RecognizeResult | DetectResult>

Instead of using any arguments and a mixed return type, we could specify valid values for action and pair them with the expected argument types in each case.

Proposed implementation:

addJob(action: 'recognize', ...args: Parameters<Worker['recognize']>): Promise<RecognizeResult>
addJob(action: 'detect', ...args: Parameters<Worker['detect']>): Promise<DetectResult>
addJob(action: 'setParameters', ...args: Parameters<Worker['setParameters']>): Promise<ConfigResult>

The main benefit is in better Intellisense/autocomplete hints when using the API. Specific options are suggested to the user, instead of an opaque string type forcing them to refer to the documentation.

Here's an example of autocomplete in action, after adding the three more specific type definitions:

I will link a PR with this code in case it's something the maintainers would consider integrating. It is a type-only change that doesn't affect any functionality, and is backwards-compatible with the current type definitions (being just a more narrow version of these).